A microscopia eletrônica de varredura pode ser usada para medir quantitativamente a rugosidade da dentina? / Can Scanning Electron Microscopy be used to quantitatively measure dentine roughness?

Objective: The aim of this study was to determine if SEM used with imaging software could be used to quantitatively determine the extent of dentine roughness due to tooth-brushing. Material and methods: Flat, polished dentine surfaces were subjected to 25,000 cycles of simulated tooth-brushing at 2 strokes per second with a load of 200 g. At the end of the brushing cycle, dentine surfaces were first assessed using profilometry and then subjected to SEM analysis. Ra (average roughness) readings were obtained for profilometric assessment. Using imaging software, the horizontal distance between adjacent characteristic grooves noted on micrographs was measured, ensuring that the middle of each crest of the associated groove was used as the reference point, the Crest-to-Crest distance (C-C distance). These two parameters were examined statistically for correlation. Results: When Spearman Rank tests were utilized the correlation between average Ra and crest to crest measurements was 0.709 (p <0.01). The Bland Altman plot, however, showed poor agreement between the two test parameters. Conclusion: Further work is needed to validate the use of this methodology in the quantitative assessment of tooth surface loss due to abrasion (AU)

Objetivo: O objetivo deste estudo foi determinar se o MEV usado com software de imagem poderia ser usado para determinar quantitativamente a extensão da rugosidade da dentina devido à escovação dentária. Material e Métodos: Superfícies dentinárias planas e polidas foram submetidas a 25.000 ciclos de escovação dentária simulada a 2 movimentos por segundo com uma carga de 200g. No final do ciclo de escovação, as superfícies dentinárias foram primeiro avaliadas por perfilometria e depois submetidas à análise MEV. Leituras de Ra (rugosidade média) foram obtidas para avaliação perfilométrica. Utilizando um software de imagem, foi medida a distância horizontal entre sulcos característicos adjacentes observados nas micrografias, garantindo que o meio de cada crista do sulco associado fosse usado como ponto de referência, a distância crista a crista (distância CC). Esses dois parâmetros foram examinados estatisticamente para correlação. Resultados: Quando foram utilizados os testes de Spearman Rank, a correlação entre a média de Ra e as medidas de crista a crista foi de 0,709 (p<0,01). O gráfico de Bland Altman, no entanto, mostrou fraca concordância entre os dois parâmetros de teste. Conclusão: Mais trabalhos são necessários para validar o uso desta metodologia na avaliação quantitativa da perda da superfície dentária devido à abrasão(AU)

Bathroom Behaviors Regarding Oral Hygiene Items During COVID-19 Home Isolation: A Cross-Sectional Study in Southern Brazil

ABSTRACT Objective: To describe behaviors with oral hygiene items in single-bathroom households during the domiciliary isolation of individuals with positive 'Reverse transcriptase polymerase chain reaction' (RTPCR+) in southern Brazil. Material and Methods: Cross-sectional study was conducted with Research and Monitoring Sector of COVID-19 data from Palhoça, Brazil, of individuals aged ≥18 years, living in a singlebathroom household, who had an RT-PCR positive. A link of Google Forms was used. Socio-demographic information, characteristics during the home isolation, oral hygiene, and behaviors with oral hygiene items in the bathroom were collected. Descriptive stratified analyses according to age were conducted (<40 and ≥40 years). Results: Among 524 individuals, 36% were aged ≥40 years. During isolation, according to the behaviors with oral hygiene items in the household single-bathroom, 70% (95%CI 64.9-75.5) of the youngest participants reported sharing toothbrushes in the same container and 30% (95%CI 24.4-35.1) of the oldest; use of the same toothpaste was reported by 67% (95%CI 62.8-71.7) of the youngest and 33% (95%CI 28.337.3) of the oldest participants. For the outcome of sharing the same toothpaste, the chances for the youngest and the oldest to share the same toothbrush container was 11 times and 6 times more, respectively. Conclusion: The individuals related good oral hygiene habits; however, behaviors with oral hygiene items in the bathroom were neglected, especially by the younger individuals.

Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites

The objective of this study was to evaluate the effect of abrasion wear on surface roughness and microhardness of different commercially available resin composites simulating pH-challenges of the oral cavity. Methods: Three resin composites (RC) were used in this study: one conventional: Z250; and two bulk fill resin composites (BRC): Tetric N-Ceram (TNC) and Sonic Fill (SF). The RC was inserted in a prefabricated mold (15mm wide x 4mm thickness) in two layers, or in a single layer for BRC. Thirty samples were prepared and surface roughness (Ra) and Knoop microhardness (KHN) test were performed at three different time-points of evaluation: baseline (24h after sample preparation); partial (after pH cycling); and final (after simulated toothbrushing procedure). Two samples of each group were selected after different treatments and analyzed descriptively on a scanning electron microscopy (SEM). Data from Ra and KHN were analyzed by two-way repeated-measures ANOVA and Bonferroni's post-hoc test with a significance level set at 5%. Results: Ra increased for all groups (p<0.001), at the final time-point, Z250 and TNC groups present the highest values. Oppositely, KHN decreased for all groups (p<0.001), Z250 group showed the highest KHN values for all time-points (p<0.001). The SEM imagens showed a regular surface for samples cycled and irregular with inorganic particles exposed for samples toothbrushed. Conclusion: pH-cycling and simulated toothbrushing affected the superficial properties (roughness and Knoop microhardness), as observed at SEM imagens, with irregular surface with inorganic particles exposure

Escovas de dentes comercializadas no Brasil: normas e implicações para a vigilância sanitária / Toothbrushes commercialized in Brazil: norms and implications for sanitary surveillance

Introdução - Entre os problemas de saúde bucal, a cárie dentária ou problemas periodontais são problemas de saúde pública, que podem, em parte, serem prevenidos com o uso da escova de dentes. Obrigatoriamente, temos que ter escovas de dentes ao alcance de todos, escovas de qualidade para que não produza danos aos tecidos da cavidade bucal, independentemente do valor de aquisição do produto. E existem normas brasileiras, como a Portaria 97 de 1996, a Resolução da Diretoria Colegiada (RDC) 142 de 2017, e a RDC 640 de 2022, a qual dispõe sobre regularização de produtos de higiene pessoal e, dentre eles a escova de dentes manual, objeto deste estudo. Objetivo - Observar macroscópica e microscopicamente os componentes das escovas de dentes manuais comercializadas em municípios do Estado de São Paulo e classificá-las em adequadas ou inadequadas para o uso por meio da proposição de um protocolo para avaliar esses instrumentos de higiene bucal, na perspectiva da vigilância sanitária. Método - Escovas dentais manuais foram adquiridas no mercado representado por estabelecimentos com características comerciais variadas, dentre os quais supermercados, farmácias, mercados populares, comércio ambulante e lojas de conveniência de municípios do Estado de São Paulo, nas condições em que são comercializadas normalmente, no período entre 26/08/2018 e 20/10/2018. Na análise estatística, foi utilizado o programa Epi Info versão 7.5.2.0, e o teste do qui-quadrado foi aplicado, sendo considerados estatisticamente significativos valores de p <0,05. Resultados - Foram avaliadas 345 escovas dentais manuais, obtidas em 07 municípios de pequeníssimo porte demográfico (n=65), 06 municípios de pequeno porte (n=70), 06 municípios de médio porte (n=103) e em 07 municípios de grande porte demográfico (n=107). Na análise macroscópica, mais de 70% das escovas manuais foram consideradas adequadas ao uso nos critérios cabo (reto nos formatos sextavado, oitavado e retangular achatado) cabeça (trapezoidal, ovalado e retangular). Com relação ao número total de cerdas, 36,52% foram consideradas adequadas e 63,48 % inadequadas ao uso e, pelo teste do qui-quadrado cal = 7,8315 (p = 0,2507) relacionado ao porte dos municípios, não houve diferença estatisticamente significativa. Na análise microscópica, o resultado mostrou que não houve diferença estatisticamente significativa quanto ao porte dos municípios com relação ao arredondamento da ponta das cerdas (p = 0,4603) e dilaceramento com presença ou não de farpas (p = 0,9920) para adequada ou inadequada para o uso, também não houve diferença estatisticamente significativa quanto aos países de origem, Brasil e China com relação a conformidade ou não conformidade ao arredondamento (p = 0,199), dilaceramento (p = 0,636) e o número total de cerdas na escova (p= 1,000) pelo teste do qui-quadrado. Após avaliação dos instrumentos em suas variáveis em conforme e não conforme em relação ao arredondamento, dilaceramento e número total de cerdas, as escovas foram categorizadas em adequadas e inadequadas, e pelo teste do qui quadrado (p= 0,078) não houve estatisticamente diferença significativa entre os países de origem Brasil e China. Conclusões - Dentre as 345 escovas dentais manuais analisados neste estudo comercializadas no Estado de São Paulo, no final da segunda década do século XXI, predominaram 285 (82,6%) produtos classificados como inadequados para o uso humano. Esta situação indica fragilidades nos procedimentos regulatórios vigentes no país e implica riscos para a saúde da população. Os profissionais permanecem sem uma referência científica para identificar e indicar uma escova de dentes manual para a população. Por essa razão, a referida escassez é, ela mesma, um problema de saúde pública, pois não proporciona aos órgãos de vigilância sanitária condições para o aprimoramento dos procedimentos que visem à qualificação das ações nesse setor para proteção da saúde da população.

Introduction - Among the oral health problems, dental caries or periodontal problems are public health problems, which can, in part, be prevented with the use of a toothbrush. Obligatorily, we have to have toothbrushes within everyone's reach, quality brushes so that they do not cause damage to the tissues of the oral cavity, regardless of the purchase price of the product. And there are Brazilian norms, such as Ordinance 97 of 1996, Resolution of the Collegiate Board (RDC) 142 of 2017, and RDC 640 of 2022, which provides for the regularization of personal hygiene products and, among them, the manual toothbrush, object of this study. Objective - To observe macroscopically and microscopically the components of manual toothbrushes sold in cities in the State of São Paulo and classify them as adequate or inappropriate for use by proposing a protocol to evaluate these oral hygiene instruments, from the perspective of health surveillance. Method - Manual toothbrushes were purchased in the market represented by establishments with varied commercial characteristics, among which supermarkets, pharmacies, popular markets, street vendors and convenience stores in municipalities in the State of São Paulo, under the conditions in which they are normally sold, in the period between 08/26/2018 and 10/20/2018. In the statistical analysis, the Epi Info version 7.5.2.0 program was used, and the chi-square test was applied, with p values <0.05 being considered statistically significant. Results - 345 manual toothbrushes were evaluated, obtained in 07 municipalities of very small demographic size (n=65), 06 small municipalities (n=70), 06 medium-sized municipalities (n=103) and 07 large municipalities. demographic size (n=107). In the macroscopic analysis, more than 70% of the manual brushes were considered suitable for use in the criteria handle (straight in hexagonal, octagonal and flattened rectangular formats) and head (trapezoidal, oval and rectangular. Regarding the total number of bristles, 36.52% were considered adequate and 63.48% inappropriate for use and, by the chi-square test cal = 7.8315 (p = 0.2507) related to the size of the municipalities, there was no statistically significant difference. In the microscopic analysis, the result showed that there was no statistically significant difference regarding the size of the municipalities in relation to the rounding of the tip of the bristles (p = 0.4603) and laceration with or without the presence of splinters (p = 0.9920) for adequate or unsuitable for use, there was also no statistically significant difference as to the countries of origin, Brazil and China regarding compliance or non-compliance with rounding (p = 0.199), tearing (p = 0.636) and the total number of bristles on the brush (p = 1.000) by chi-square test. After evaluating the instruments in their conforming and non-conforming variables in relation to rounding, tearing and the total number of bristles, the brushes were categorized as adequate and followed, and by the chi-square test (p= 0,078) there were no statistically significant difference between the countries of origin Brazil and China. Conclusions - Among the 345 manual toothbrushes analyzed in this study sold in the State of São Paulo, at the end of the second decade of the 21st century, 285 (82.6%) products were classified as unsuitable for human use. This situation indicates weaknesses in the in the prevailing regulatory procedures in the country and implies risks to the health of the population. Professionals remain without a scientific reference to identify and recommend a manual toothbrush to the population. For this reason, the aforementioned scarcity is itself a public health problem, as it does not provide conditions for health surveillance agencies to improve procedures aimed at qualifying actions in this sector to protect the health of the population.

Ação de dentifrícios antiplaca e anticálculosobre esmalte dentário bovino / The action of antiplaque and anticalculus dentifrices in bovine dental enamel

Introdução: os dentifrícios antiplaca e anticálculo contêm, em sua composição, agentes específicos para o controle e a redução do biofilme dentário, como o citrato de zinco, o óxido de zinco e o pirofosfato tetrassódico, dentre outros. Objetivo: avaliar in vitroa ação de dentifrícios antiplaca e anticálculo na variação da massa e da rugosidade superficial do esmalte bovino submetido à escovação simulada por 6 e 12 meses.Metodologia: 40 corpos de prova (CP) foram randomizados e divididos aleatoriamente em 4 grupos (n=10): grupo controle (GC- água) e 3 grupos teste (GT1 ­ Colgate-Total® 12 Clean Mint, GT2 ­ Colgate-Total® 12 Anti-Tártaro, GT3 ­ Prevent® Antiplaca). Os CP foram submetidos à escovação simulada por 6 e 12 mesese as avaliações da massa e da rugosidade foram realizadas após cada período de escovação. Resultados: a análise da variação da massa demonstrou que não houve diferença significativa entre os grupos e os tempos. A avaliação da rugosidade demonstrou que, após 12 meses de escovação, o GT1 apresentou aumento significativo da rugosidade, quando comparado aos grupos controle e testes, enquanto os grupos GT2 e GT3 apresentaram comportamento semelhante após um ano de escovação, promovendo o polimento superficial do esmalte bovino. Conclusão: a escovação com os dentifrícios antiplaca ou anticálculo não promoveu perda significativa da massa no esmalte bovino e promoveu seu polimento.

Introduction: Antiplaque and anticalculus dentifrices contain in their composition specific agents for the control and reduction of dental biofilm, such as zinc citrate, zinc oxide, tetrasodium pyrophosphate, among others. Objective: To evaluate in vitro the action of antiplaque and anticalculus dentifrices on the variation of mass and surface roughness of bovine enamel submitted to simulated brushing for 6 and 12 months. Metodology: 40 specimens (PB) were randomized and randomly divided into 4 groups (n=10): control group (GC ­ water) and 3 test groups (GT1 ­ Colgate-Total® 12 Clean Mint, GT2 ­ Colgate-Total® 12 Anti-Tartar, and GT3 ­ Prevent®Antiplaque). The PB were submitted to simulated brushing for 6 and 12 months and the mass and roughness evaluations were performed after each brushing period. Results: The analysis of mass variation showed that there was no significant difference between groups and times. The roughness evaluation showed that after 12 months of brushing, GT1 showed a significant increase in roughness when compared to the control and test groups, while the GT2 and GT3 groups showed similar behavior after one year of brushing, promoting the surface polishing of bovine enamel. Conclusion: Brushing with antiplaque or anticalculus dentifrices did not promote significant mass loss in bovine enamel and promoted its polishing.

Factores asociados con la caries de infancia temprana severa en niños peruanos / Factors associated to severe early childhood caries in Peruvian children

Introducción: La caries de infancia temprana severa es un problema de salud pública que afecta a los niños que la padecen y a sus familias. Objetivo: Determinar la asociación de variables sociodemográficas, de higiene y alimentación con la caries de infancia temprana severa en niños peruanos. Métodos: Se realizó un estudio observacional, analítico, de casos y controles, de octubre a diciembre del 2019. La muestra estuvo compuesta por 264 niños de 2-5 años de edad y sus acompañantes (100 del grupo sin caries y 164 del grupo con caries de infancia temprana severa) que asistieron al Departamento de Odontopediatría del Instituto Nacional de Salud del Niño en Lima, Perú. Se realizó una entrevista estructurada directa, con preguntas cerradas sobre variables sociodemográficas, de higiene, de alimentación y una evaluación clínica, utilizando el índice cpo-s. Se utilizaron las pruebas estadísticas de chi cuadrado, Kruskal-Wallis y el modelo de regresión logística binaria. Resultados: De las variables sociodemográficas, experiencia dental negativa y seguro de salud, tuvieron un valor p < 0,05. Igual resultado tuvo el uso de una pasta dental fluorada, alimentación por biberón, tiempo de alimentación por biberón y edad de inicio del cepillado dental. En el modelo de regresión logística binaria solo las variables uso de pasta dental fluorada (OR = 0,578; 95 por ciento IC: 0,495-0,674) y edad de inicio del cepillado dental (OR = 0,924; 95 por ciento IC: 0,850-0,938) tuvieron un p < 0,05. Conclusiones: Las variables edad de inicio del cepillado dental y uso de una pasta dental fluorada están asociadas con la aparición de caries de infancia temprana severa en niños peruanos. Las variables sociodemográficas y de alimentación no están asociadas(AU)

Introduction: Severe early childhood caries is a public health problem affecting sufferers and their families. Objective: Determine the association of sociodemographic, hygiene and food intake variables to severe early childhood caries in Peruvian children. Methods: An observational analytical case-control study was conducted from October to December 2019. The study sample was 264 children aged 2-5 years (100 from the group without caries and 164 from the group with severe early childhood caries) and their companions, who attended the Children's Dental Care Department at the National Children's Health Institute in Lima, Peru. Direct structured interviews were held based on closed-ended questions about sociodemographic, hygiene and food intake variables, and a clinical evaluation was performed using the cpo-s index. Use was made of the chi-square statistical test, the Kruskal-Wallis test and the binary logistic regression model. Results: Among the sociodemographic variables considered, a negative dental care experience and health insurance obtained a value of p < 0.05. The same result was obtained by use of fluoride toothpaste, bottle feeding, bottle feeding time and age at tooth brushing start. In the binary logistic regression model only the variables use of fluoride toothpaste (OR = 0.578; 95 por ciento CI: 0.495-0.674) and age at tooth brushing start (OR = 0.924; 95 por ciento CI: 0.850-0.938) obtained a value of p < 0.05. Conclusions: The variables age at tooth brushing start and use of fluoride toothpaste are associated to the appearance of severe early childhood caries in Peruvian children. Sociodemographic and food intake variables are not associated(AU)

O brincar de fazer compras como estratégia educativa em saúde bucal do ensino infantil / Playingshoppingas aneducational strategy in oral health for children in early childhood education / Jugar las comprascomo estrategia educativa ensalud bucalpara niños en educacíon infantil

Introdução:A escola é um ambiente propício para o desenvolvimento de hábitos que podem ser aplicadospor toda a vida. Nessa perspectiva, as atividades educativas com escolares podem contribuir significativamente na promoção de saúde bucal e na disseminação de bons hábitos de higiene oral, sendo alternativas capazes de instruir esses sujeitos eficientemente.Objetivo:Relatar a experiência de uma intervenção lúdica de caráter educativo realizada pela equipe de um projeto de extensão com uma turma de educação infantil em escola institucional de educação básica.Metodologia:A partir do conhecimento da faixa etária dos escolares, um jogo educativo foi desenvolvido e uma ação de caráter lúdico foi elaborada. A alimentação saudável foi a temática escolhida para ser trabalhada interdisciplinariamente à conscientização sobre o papel dos alimentos no desenvolvimento da cárie dentária e das orientações de higiene oral. Ao "brincar de fazer compras", momento em que os alunos podiam escolher quais alimentos adquirir no jogo, foi possível discorrer sobre quais dessas escolhas alimentares não eram saudáveis e também orientar os participantescom macromodelosobre a forma correta de escovação e uso dofio dental.Resultados:A interação das crianças com a atividade e com toda equipe de extensionistas foi bastante satisfatória. Foi possível verificar que os mesmos assimilaram bem os assuntos trabalhados ludicamente e foi demonstrado pela intervenção que os alunos conseguiram adquirir conhecimentos práticos sobre a saúde bucal no momento de orientação de higiene oral tanto no jogo quanto na simulação da escovação com macromodelo. Conclusões:Atividades lúdicas para escolares podem ser instrumentos capazes de transmitir conhecimentos em saúde bucal satisfatoriamente ao passo que sinalizam aspectos que devem ser desenvolvidos e incorporados no cotidiano dos indivíduos desde a mais tenra idade (AU).

Introduction: School is a conducive environment for developing habits that can be extended throughout life. From this perspective, educational activities with schoolchildren can significantly contribute to promoting oral health and to disseminate good oral hygiene habits, constituting alternatives which are capable of efficiently educating these subjects. Objective:To report the experience of a playful and educational intervention carried out by the team of an extension project with an early childhood education class in an institutional school of basic education. Methodology: An educational game was developed based on the knowledge of the age range of the school children, and a playful action was elaborated. A healthy eating theme was chosen to be worked on in an interdisciplinary way to raise awareness about the role of food in developing dental caries and oral hygiene guidelines. By "playing shopping" in which students could choose which foods to buy in a game, it was possible to discuss which of these food choices were unhealthy and also guide participants with a macromodel on the correct way of brushing and flossing. Results: The interaction of children with the activity and with the entire extension team was quite satisfactory. It was possible to verify that they had assimilated the playfully addressed issues and it was demonstrated that students were able to acquire practical knowledge about oral health during the oral hygiene orientation in both the game and in the brushing simulation with the macromodel. Conclusions:Playful activities for schoolchildren may constitute instruments which are capable of satisfactorily transmitting knowledge on oral health, and can indicate aspects which must be developed and incorporated into the daily lives of individuals from a very early age (AU).

Introducción: La escuela es un entorno favorable para el desarrollo de hábitos que pueden prolongarse a lo largo de la vida. En esta perspectiva, las actividades educativas con alumnos pueden contribuir significativamente a la promoción de salud oral y de difusión de buenas costumbres de higiene oral, siendo estas alternativas capaces de educar estos sujetos eficientemente.Objetivo:Relatar la experiencia de una intervención lúdica educativo, realizada por un equipo de un proyecto de extensión, direccionada a un grupo de educación infantil en una escuela del sistema educativo básico brasileño. Metodología: A partir del conocimiento de la franja etaria , se diseñó un juego educativo y se planeó una acción de carácter lúdico. La alimentación sana fue la temática elegida para que, de este modo, además de orientaciones de cuidados orales, también se trabajara, interdisciplinariamente, la concientización sobre la relación entre los alimentos y el surgimiento de caries dentarias. Al "jugar a las compras", momento en que los alumnos podían elegir cuales alimentos iban a adquirir, fue posible debatir sobre cuales de las opciones alimentares no eran sanas y, además de eso, orientar los participantes, con un tipodonto, sobre la forma correcta de cepillarse y de usar el hilo dental. Resultados: La interacción con la actividad y con el equipo de extensión fue muy exitosa. Fue posible verificar que los alumnos comprendieron los temas trabajados lúdicamente y también que, a través de la intervención, consiguieron alcanzar conocimientos prácticos sobre salud oral, tanto en el momento de la orientación de higiene oral cuanto en la actividad de simulación de cepillado con el apoyo del tipodonto.Conclusiones:Actividades lúdicas para niños r pueden ser instrumentos capaces de proporcionar aprendizajes sobre salud oral en la medida en que señalan aspectos que necesitan ser desarrollados en las prácticas rutineras de sujetos desde muy temprana edad (AU).

Caries Experience and Knowledge About Oral Health Importance Among Children with Congenital Heart Diseases in Kosovo

Abstract Objective: To determine the dental health of children with Congenital Heart Diseases (CHD) and to evaluate the parents' knowledge of the importance of oral health and the risk of Bacterial Endocarditis. Material and Methods: This research included 140 children divided into the study group (80 children with CHD) and the control group (60 healthy children). The children were from different parts of Kosova, aged between 3-15. The parents were asked to complete a questionnaire containing demographic data (age and gender), general and special medical history (CHD types), knowledge about oral health importance and risk of bacterial endocarditis, and data about the daily oral hygiene child. The caries experience was reported using the DMFT/dmft index. Results: The average value of the dmft index was 6.7 for the study group and 5.62 for the control group, while the average value of DMFT index for the study group was 4.1, and for the control group was 3.47 (p>0.05). About 68.7% of parents of children with CHD were informed about their risk during dental interventions. However, knowledge was insufficient about the importance of oral health and dental prophylactic measures once only 32.7% of them were aware of those measures. Conclusion: No difference was observed between healthy and CHD children in caries experience and frequency of daily tooth brushing. Our findings provide evidence of a lack of knowledge about the importance of oral health and dental prophylactic measures among parents with CHD children (AU).

Agentes e métodos de descontaminação das escovas dentais - Uma revisão sistemática / Decontamination agents and methods of toothbrushes - A systematic review

Objetivo: Realizar uma revisão sistemática para avaliar os principais agentes e métodos de descontaminação das escovas dentais contra vírus, bactérias e fungos encontrados na literatura. Métodos: Foi realizada uma busca nas bases de dados LILACS® (Literatura científica e técnica da América Latina e Caribe/BVS ­ Biblioteca Virtual em Saúde), MEDLINE® (Medical Literature Analysis and Retrieval System Online / PubMed)®, EMBASE® (Elsevier), em agosto de 2020. Como critério de inclusão, foram selecionados artigos publicados entre os anos de 2010 e 2020, nos idiomas português, inglês e espanhol, estudos de ensaios clínicos controlados randomizados, ensaios clínicos não randomizados e estudos in vitro, que avaliaram diferentes agentes e métodos de descontaminação das escovas dentais. Resultados: Foram recuperados um total de 2523 artigos, sendo qualificados para o estudo um total de 6 artigos "in vivo" e 4 "in vitro". O agente de descontaminação mais estudado e eficaz foi a clorexidina 0,12% (em forma de imersão ou spray), seguida pelo hipoclorito de sódio 1% e 2,5% (imersão), vinagre branco 50% (imersão), solução de cloreto de cetilpiridínio (imersão ou spray), micro-ondas e máquina de lavar-louças. Conclusão: Considerando as evidências de qualidade encontradas, a clorexidina 0,12% constitui o agente mais estudado e eficaz, seguido pelo hipoclorito de sódio 1 % e cloreto de cetilpiridínio, utilizados em forma de spray ou imersão, constituem soluções eficazes, de fácil acesso, que podem ser utilizadas pela população para descontaminação das escovas dentais.

Aim: To carry out a systematic review of articles found in the literature in order to evaluate the main agents and methods for decontaminating toothbrushes against viruses, bacteria, and fungi. Methods: A search was performed in LILACS® (Scientific and Technical Literature of Latin America and the Caribbean/VHL ­ Virtual Health Library), MEDLINE® (Medical Literature Analysis and Retrieval System Online /PubMed)®, and EMBASE® databases (Elsevier), in August 2020. As inclusion criteria, articles published between 2010 and 2020, in Portuguese, English, and Spanish, studies of randomized controlled clinical trials, non-randomized clinical trials, and in vitro studies were selected, which evaluated different agents and methods for decontaminating toothbrushes. Results: A total of 2,523 articles were retrieved, with a total of 6 in vivo and 4 in vitro articles deemed to be eligible for the study. The most studied and effective decontamination agent was 0.12% chlorhexidine (in immersion or spray form), followed by 1% and 2.5% sodium hypochlorite (immersion), 50% white vinegar (immersion), solution of cetylpyridinium chloride (dip or spray), microwave, and dishwasher. Conclusion: Considering the quality evidence found, 0.12% chlorhexidine is the most studied and effective agent, followed by 1% sodium hypochlorite and cetylpyridinium chloride, used in spray or immersion form; these are effective, easily accessible solutions that can be used by the population to decontaminate toothbrushes.

Relación entre edad, cepillado dental y experiencia de caries en niños / Relação entre idade, escovação dentária e experiência de cárie dentária em crianças / Relationship between age, toothbrushing and caries experience in children

El cepillado dental es el método tradicional reconocido para eliminar la biopelícula. Objetivo: Evaluar la relación entre edad y cepillado dental, así como la asociación entre hábitos de cepillado dental y presencia de caries en un grupo de escolares de Montevideo, Uruguay. Material y métodos: Se realizó un estudio observacional, transversal, analítico, en 127 escolares de 4 a 11 años de edad, en Montevideo, Uruguay. Se realizó una encuesta a los padres en relación a los hábitos de cepillado dental de sus hijos y se estudiaron las variables tiempo de cepillado, Índice de Higiene Oral simplificado y se registró el índice para caries dental ICDAS. Resultados: La edad media de los participantes fue 7,93 años (DS ± 1,95). El tiempo promedio de cepillado fue de 47 segundos (DS ± 27 segundos). Los tiempos de cepillado que reportaron los padres difirieron significativamente de los observados en los niños. Al aumentar la edad, el tiempo de cepillado también aumentaba. Se ajustó un modelo de regresión múltiple para analizar la relación entre la disminución en la magnitud del IHOS debido al cepillado y las variables edad, género, tiempo de cepillado y ayuda en el cepillado. Se verificó asociación entre las variables ayuda y/o supervisión en el cepillado y presencia o no de caries dental. Conclusiones: Se encontró una relación significativa entre cepillado dental, edad y tiempo de cepillado en la población estudiada. A mayor edad, mayor tiempo de cepillado y mejor resultado en el índice de higiene oral. Los niños que recibían supervisión o ayuda de los padres fueron los que presentaron menos lesiones de caries.

A escovação dentária é o método tradicional reconhecido para a remoção do biofilme. Objetivo: Avaliar a relação entre idade e escovação dentária, bem como a associação entre hábitos de escovação dentária e a presença de cáries em um grupo de escolares em Montevidéu, Uruguai. Material e métodos: Um estudo observacional, transversal, analítico foi realizado em 127 escolares de 4 a 11 anos, em Montevidéu, Uruguai. Foi realizada um levantamento dos pais sobre os hábitos de escovação dentária de seus filhos e as variáveis foram estudadas para o tempo de escovação, índice simplificado de higiene bucal e o índice de cárie dentária do ICDAS. Resultados: A idade média dos participantes foi de 7,93 anos (DS s 1,95). O tempo médio de escovação foi de 47 segundos (DS x 27 segundos). Os tempos de escovação relatados pelos pais diferiram significativamente daqueles observados nas crianças. À medida que a idade aumentava, o tempo de escovação também aumentava. Um modelo de regressão múltipla foi ajustado para analisar a relação entre a diminuição da magnitude do IHOS devido à escovação e as variáveis de idade, sexo, tempo de escovação e auxílio de escovação. Houve associação entre as variáveis ajuda e/ou supervisão na escovação e presença ou não de cárie dentária Conclusões: Verificou-se uma relação significativa entre escovação dentária, idade e tempo de escovação na população estudada. Quanto mais velho, maior o tempo de escovação e melhor resultado no índice de higiene bucal. As crianças que receberam a supervisão ou a ajuda dos pais eram essas com menos os ferimentos da cavidade

Dental brushing is the recognized traditional method for removing the biofilm. Objective: To evaluate the relationship between age and toothbrushing, as well as the association between toothbrushing and caries lesions in schoolchildren in Montevideo, Uruguay. Material and methods: An observational, cross sectional and analytic study was carried on 127 schoolchildren aged 4 to 11 years old, in Montevideo, Uruguay. The parents were asked about the oral health habits of their children through a questionnaire, and the variables toothbrushing time, Simplified Oral Hygiene Index and ICDAS index were registered. Results: Mean age of the children was 7,93 years (SD ± 1,95). Mean time of toothbrushing was 47 seconds (DS ± 27 seconds). The toothbrushing times reported by the parents differed significantly from those observed in the children. As age increased, brushing time also increased. A multiple regression model was adjusted to analyze the relationship between the decrease in the magnitude of IHOS due to toothbrushing and the variables age, toothbrushing time and brushing aid. There was an association between the variables help and / or supervision in brushing and presence or not of dental caries. Conclusions: A significant relationship was found between toothbrushing, age, gender and brushing time in this group of children. When the age was higher, they spent more time brushing their teeth and they had better results in oral hygiene index. Children who had parents help or supervision had lower caries lesions

Effect of desensitizing dentifrices on eroded dentin wettability / Efeito de dentifrícios dessensibilizantes na molhabilidade da dentina erodida

Objective: To analyze the wettability on the surface of eroded dentin in teeth submitted to abrasive wear with desensitizing dentifrices. Material and Methods: Bovine dentin specimens were polished and immersed in 10 mL of citric acid (pH=3.2) for 2 h. The eroded specimens were submitted to mechanic brushing according to the 4 dentifrices adopted: Colgate Total (control); Colgate Sensitive Pro-Relief; Sensodyne Repair & Protect; or Sensodyne Rapid Relief. Afterwards, it was conditioned in 37% aqueous phosphoric acid solution. Wettability of 80 specimens (n=10) brushed for 7 or 21 days was evaluated by measuring the contact angle between the dentin surface and a drop of the adhesive Single Bond Universal® (3M) with a goniometer. Changes in the surface morphology of 12 specimens (n = 3) brushed for 21 days were followed by confocal laser scanning microscopy (CLSM). Data were analyzed by two-way ANOVA and Tukey test (p > 0.05). Results: Groups treated with desensitizing dentifrices did not differ significantly (p ≤ 0.05). Surface treatment and abrasive wear did not interact significantly (p ≤ 0.05). Brushing along 7 days gave the smallest contact angle value (p ≥ 0.05). CLSM images showed morphological changes for all the groups. Conclusion: The desensitizing dentifrices did not interfere in eroded dentin wettability after brushing along 7 or 21 days. Brushing with any of the dentifrices along 21 days promoted open dentinal tubules.(AU)

Objetivo: Analisar a aplicação de um adesivo na superfície de dentina erodida em dentes submetidos ao desgaste abrasivo com agentes dessensibilizantes. Material e Métodos: Espécimes de dentina bovina foram polidos e imersos em 10 mL de ácido cítrico (pH=3,2) por 2 h. Os espécimes erodidos foram submetidos à escovação mecânica de acordo com os 4 dentifrícios adotados: Colgate Total (controle); Colgate Sensitive Pro-Alívio; Sensodyne Repair & Protect; ou Sensodyne Rápido Alívio. Em seguida, foram condicionados em ácido fosfórico a 37%. A molhabilidade de 80 espécimes (n=10) escovados por 7 ou 21 dias foi avaliada medindo-se o ângulo de contato entre a superfície dentinária com uma gota do adesivo Single Bond Universal® (3M) por um goniômetro. Alterações na morfologia da superfície de 12 espécimes (n = 3) escovados por 21 dias foram seguidos por Microscopia Confocal de Varredura a Laser (MCVL). Os dados foram analisados por ANOVA dois fatores e teste de Tukey (p > 0,05). Resultados: Os grupos tratados com dentifrícios dessensibilizantes não diferiram significativamente (p ≤ 0,05). O tratamento de superfície e o desgaste abrasivo não interagiram significativamente (p ≤ 0,05). A escovação ao longo de 7 dias apresentou o menor valor de ângulo de contato (p ≥ 0,05). As imagens do MCVL mostraram alterações morfológicas para todos os grupos. Conclusão: Os dentifrícios dessensibilizantes não interferiram na molhabilidade da dentina erodida após escovação ao longo de 7 ou 21 dias. A escovação com qualquer um dos dentifrícios ao longo de 21 dias promoveu a abertura dos túbulos dentinários (AU)

Visual Inspection and Toothbrush Care: A Mother-Baby Paired Cross-Sectional Study

ABSTRACT Objective To evaluate the physical conditions and presence of residues of toothbrushes used by mothers and their babies and mothers' knowledge about toothbrush care. Material and Methods This was a cross-sectional study comprising a convenience sample represented by 60 mother-baby pairs. The mothers answered a questionnaire to evaluate their knowledge of toothbrush care. A calibrated dentist performed a visual inspection of the toothbrushes. Statistical analysis was performed using the chi-square and Fisher's exact tests, with a significance level of 5%. Results It was found that 82% of the mothers had never received instructions regarding the care of toothbrushes after use (p=0.024). Most of them believed that their toothbrushes (70%) and their children's toothbrushes (88%) were in good condition to use (p=0.043). However, most mother's toothbrushes presented an unacceptable deformity of the bristles (65%) and the presence of residues (60%). In addition, babies' toothbrushes also presented unacceptable deformities of the bristles (52%) and residues (55%). There was an association between the lack of instructions received by the mother and the presence of deformity and residues on the mother's toothbrush bristles (p=0.037 and p=0.003, respectively). Conclusion Most mothers had never received instructions regarding toothbrush care, which is reflected in the condition of their and their baby's toothbrushes, which presented unacceptable physical conditions concerning deformation and presence of residues.

Daily Toothbrushing Frequency and the Association with Parental Report of Dental Pain and Discomfort in Preschool Children

Abstract Objective: To evaluate the impact of daily toothbrushing frequency on parental reports of dental pain and discomfort in preschoolers. Material and Methods: An observational cross-sectional study was conducted involving 376 children between four and five years of age at public preschools in the city of Campo Magro, Brazil. Parents/guardians answered a socioeconomic questionnaire that contained a single question on the child's daily toothbrushing frequency and the Brazilian version of the Dental Discomfort Questionnaire (DDQ-B). Statistical analysis involved bivariate and multivariate Poisson regression analyses (α=0.05). Results: After the adjustments in the multivariate analysis, the prevalence of dental pain and discomfort was lower among children whose last visit to the dentist was for prevention (PR = 4.42; 95% CI: 1.75- 11.14; p=0.002) and those with a higher daily toothbrushing frequency (PR = 2.13; 95% CI: 1.12-4.05; p=0.021). Conclusion: A lower toothbrushing frequency is associated with parental reports of dental pain and discomfort in preschoolers. Educational and preventive measures that stimulate an increase in daily toothbrushing frequency can contribute to a better oral health status in preschoolers, consequently, less prevalence of dental pain and discomfort.

Avaliação qualitativa de dentes artificiais de resina acrílica após escovação simulada / Qualitative evaluation of artificial acrylic resin teeth after simulated brushing

Introdução: os dentes artificiais de resina acrílica são amplamente utilizados na confecção de próteses, por apresentarem propriedades físicas, mecânicas e biológicas, além de características de fácil manuseio. No entanto, devido sua característica de baixa resistência à abrasão, a escovação pode levar à perda de massa dos dentes artificiais e aumento da rugosidade. Objetivo: avaliar de forma qualitativa a rugosidade superficial e polimento de dentes artificiais das marcas Hereaus Premium; Trilux e Vita, após período de 1 ano de escovação, com fotografias em Lupa Estereoscópica. Metodologia: para a realização deste estudo, serão utilizados 10 dentes artificiais de cada marca comercial (Trilux, Vita e Hereaus Premium). Os dentes serão fixados com resina ortoftálica em tubo de PVC de 15 mm de espessura. Para o teste de abrasão, será usada uma máquina de escovação simulada com escovas de dentes de cerdas macias e solução de pasta de dente. As imagens serão obtidas com câmera digital acoplada a lupa estereoscópica. A rugosidade superficial e o polimento serão analisados antes da escovação simulada e após 12 meses de escovação através das imagens. Resultados: após o teste de abrasão foi observado a presença de um desgaste superficial e/ou ranhuras na superfície dos dentes artificiais em todos os grupos. Porém não houve um padrão similar entre os corpos de prova de um mesmo grupo. Conclusão: Pode-se concluir que a escovação provocou o aumento da rugosidade superficial e alteração no polimento em todos os dentes artificiais utilizados.

Introduction: acrylic resin artificial teeth are widely used in the manufacture of dentures, as they have physical, mechanical and biological properties, in addition to easy handling characteristics. However, due to its characteristic of low abrasion resistance, brushing can lead to loss of mass of artificial teeth and increase in roughness. Objective: qualitatively evaluate the surface roughness and polishing of artificial teeth of Hereaus Premium brands; Trilux and Vita, after a 1-year brushing period, with photographs using a Stereoscopic Magnifying Glass. Methodology: for this study, 10 artificial teeth of each commercial brand will be used (Trilux, Vita and Hereaus Premium). Teeth will be fixed with orthophthalic resin in a 15 mm thick PVC tube. For the abrasion test, a simulated brushing machine with soft bristle toothbrushes and toothpaste solution will be used. Images will be obtained with a digital camera coupled to a stereoscopic magnifying glass. Surface roughness and polishing will be analyzed before simulated brushing and after 12 months of brushing through the images. Results: after the abrasion test, the presence of surface wear and/ or grooves on the surface of the artificial teeth was observed in all groups. However, there was no similar pattern between the specimens of the same group. Conclusion: it can be concluded that brushing caused an increase in surface roughness and change in polishing in all artificial teeth used.

Effect of electric, ultrasonic and manual toothbrushes on biofilm removal and gingivitis control: in vitro and parallel randomized controlled clinical trial study

Aim: To evaluate the effect of manual (M), electric (E) and ultrasonic (US) toothbrushes on the removal of oral biofilm and control of gingivitis. Also, the roughness and tooth wear production were evaluated in vitro. Methods: For the in vitro analyses, thirty bovine dentin specimens were submitted to a 3-month brushing simulation (9 minutes) with the three types of toothbrushes (n = 10). Subsequently, a randomized controlled clinical trial was performed with 36 patients divided into 3 groups according to the toothbrushes used (n = 12). Gingival index, visible plaque index and the volume of crevicular fluid were evaluated at baseline and 3 months after the beginning of the toothbrush use. Furthermore, the performance of the biofilm removal per brushing cycle of 1 and 3 minutes with each toothbrush was made monthly until the end of the experiment. Results: The US group had the highest dentin wear. Clinically, the US group had a lower plaque index at 3 months than the M group. The M group also showed less biofilm removal efficiency from the second month of follow-up and more worn bristles at the end of the 3 month period than the E and US groups. Conclusion: The ultrasonic, electric and manual toothbrushes showed no differences in gingivitis control in the present study. The ultrasonic and electric toothbrushes had a more significant effect on biofilm removal than a manual toothbrush, but the ultrasonic toothbrush promoted greater dentin tissue wear

Índice CPOD y ceo-d en niños de 5 a 8 años de una escuela en una localidad de Ecuador / CPOD and ceo-d index in children between 5 and 8 years old from a school in a locality in Ecuador

Las enfermedades orales son las más comunes de las enfermedades crónicas y uno de los problemas más importantes de salud pública debido a su prevalencia, su impacto en los individuos y la sociedad y el costo de su tratamiento. En el caso de los niños este efecto se multiplica por las consecuencias que se derivan para la edad adulta. El objetivo de este estudio fue estimar los índices ceo-d en niños escolares de 5 a 8 años en la Unidad Educativa "Alejandro Dávalos Calle", Ecuador. Para ello, bajo una investigación exploratoria, descriptiva, no experimental, de campo y de corte transversal. Se seleccionó como población los niños entre 5 y 8 años de edad en el periodo académico 2017-2018; la muestra estuvo conformada por 96 niños de ambos sexos, previo a consentimiento informado y cumpliendo las normas de bioéticas. Se realizaron revisión de historia clínica de los infantes y se les aplico encuestas validadas por expertos, a estudiantes, representantes y docentes. Se obtuvo prevalencia a caries en el 100% de los niños, 47% con dientes obturados y 64% perdieron piezas dentales, no se encontró evidencia estadísticamente significativa entre la presencia de caries y el sexo. El CEOD moderado, identificándose como factores de riesgos el desconocimiento de las medidas higiénicas bucal, baja frecuencia en la revisión odontológica y una dieta altamente cariogénica en estos niños. Se recomienda diseñar campañas educativas integrales que oriente a buenas prácticas de higiene bucal con el objetivo de prevenir y minimizar el número de personas afectadas por este mal(AU)

Oral diseases are the most common of the chronic diseases and one of the most important public health problems due to their prevalence, their impact on individuals and society, and the cost of their treatment. In the case of children, this effect is multiplied by the consequences that are derived for adulthood. The objective of this study was to estimate the ceo-d indices in school children aged 5 to 8 years at the "Alejandro Dávalos Calle" Educational Unit, Ecuador. For this, under an exploratory, descriptive, non-experimental, field and cross-sectional investigation. Children between 5 and 8 years of age in the academic period 2017-2018 were selected as the population; The sample consisted of 96 children of both sexes, prior to informed consent and complying with bioethical norms. The infants' clinical history was reviewed and surveys validated by experts, students, representatives, and teachers were applied. Caries prevalence was obtained in 100% of the children, 47% with filled teeth and 64% lost teeth, no statistically significant evidence was found between the presence of caries and sex. The CEOD is high, identifying as risk factors the ignorance of oral hygiene measures, low frequency in dental check-ups and a highly cariogenic diet in these children. It is recommended to design comprehensive educational campaigns that guide good oral hygiene practices in order to prevent and minimize the number of people affected by this disease(AU)

Avaliação laboratorial da rugosidade e perda de massa de resinas compostas após a escovação com dentifrício clareador / Laboratory evaluation of roughness and weight loss of composite resins after brushing with whitening dentifrice

Introdução: os dentifrícios clareadores têm sido desenvolvidos para oferecer um melhoramento estético, porém por apresentarem maior abrasividade podem desenvolver efeitos adversos na superfície de materiais restauradores, como um aumento da rugosidade superficial, comprometendo a sobrevida das restaurações. Objetivo: analisar a rugosidade e o comportamento da massa de duas resinas compostas submetidas em laboratório à escovação com água destilada (controle) e com dentifrício abrasivo (DA) ­ Colgate Luminous White®. Metodologia: foram confeccionadas 40 amostras, 20 a partir da Resina fotopolimerizável Opallis Lab® e 20 de blocos para sistema CAD/CAM Brava Block®, divididos em quatro grupos: Opallis Lab® + água destilada, Opallis Lab® + DA, Brava Block® + água destilada, Brava Block® + DA. As amostras foram pesadas e a rugosidade aferida antes e após a escovação. Foi utilizada uma máquina de escovação em 14.690 ciclos para simulação de um ano de escovação. Os dados foram tabulados e analisados quanto à variância (ANOVA) e posteriormente realizados o teste de Tukey, comparando as médias, duas a duas. Resultados: quanto ao DA, a resina fotopolimerizável apresentou comportamento limítrofe comparado ao grupo controle, já o bloco CAD/CAM foi estatisticamente significante. Em ambos, a rugosidade reduziu no grupo controle enquanto que no grupo teste aumentou. A perda de massa apenas, foi estatisticamente significante na resina fotopolimerizável. Quando comparados os tipos de resina, não houve significância estatística quanto à rugosidade e a perda de massa. Conclusão: as resinas apresentam comportamentos semelhantes, mas os dentifrícios abrasivos não são recomendados para escovação de materiais restauradores, pois interferem negativamente na rugosidade

Introduction: whitening dentifrices have been developed to offer an aesthetic improvement, however because of their high abrasiveness, may develop adverse effects on the surface of restorative materials, may develop adverse effects on the surface of restorative materials, such as increased surface roughness, compromising the survival of restorations. Objective: analyze the roughness and mass loss of two laboratory composite resins subjected to brushing with distilled water (control) and with abrasive dentifrice (AD), Colgate Luminous White®. Methodology: were prepared 20 samples, 20 from light-curing resin Opallis Lab® and 20 from blocks for CAD/CAM system (Brava Block®), divided into four groups: Opallis Lab® + distilled water, Opallis Lab® + AD, Brava Block® + distilled water, Brava Block® + AD. The samples were weighed and the roughness measured before and after brushing. A brushing machine was used in 14,690 cycles simulating 1 year of brushing. Data were tabulated and analyzed for variance (ANOVA) and later performed the Tukey test, comparing the means, two to two. Results: as for the AD, the light-curing resin presented borderline behavior compared to the control group, when the CAD/CAM block was statistically significant. In both, the roughness decreased in the control group while in the test group it increased. The weight loss was only statistically significant in the light-cured resin. When comparing the types of resin, there wasn't statistical significance as for roughness and weight loss. Conclusion: the tested resins have similar behaviors, but abrasive dentifrices are not recommended for brushing restorative materials, because they interfere negatively in the roughness.

Efectividad del cepillo dental eléctrico versus manual para la remoción de biofilm en pacientes con síndrome de Down / Effectiveness of electric versus manual toothbrush for biofilm removal in patients with Down syndrome

Introducción: La salud oral en pacientes con síndrome de Down (SD) es un reto, ya que las alteraciones en la motricidad ocasionadas por la discapacidad intelectual (DI) hacen que tareas como la remoción del biofilm oral o placa dentobacteriana (PDB) con el cepillado sea deficiente. La efectividad de los cepillos eléctricos (CE) comparada con los manuales (CM) en afectados con SD sigue siendo un tema debatible ya que no se ha encontrado una homogeneidad de resultados. Es conveniente mayor investigación sobre el tema, debido a que el SD es considerada la alteración cromosómica más frecuente y la causa principal de DI en el mundo. Objetivo: Conocer la efectividad del CE en comparación con el CM para la remoción de PDB en pacientes mexicanos con SD de entre seis y 14 años. Material y métodos: Estudio transversal experimental, con emparejamiento de sujetos con SD de ambos géneros según la edad (seis a 14 años), asignando el cepillo a utilizar (grupo 1 CM o grupo 2 CE). Se realizó educación dental y método de cepillado con la técnica de Fones, así como control de PDB antes y después el efectuado por medio del índice de O'Leary durante tres días. Se analizaron los resultados utilizando estadística descriptiva e inferencial (prueba de normalidad Lilliefors, prueba t para variables independientes y dependientes). Se aceptó un análisis de significancia p < 0.05. Resultados: La utilización de la t para muestras independientes presentó una mejoría en incremento de dicho marcador de O'Leary en el conjunto total en los tres días de seguimiento respectivamente (t = 6.9, p < 0.00002; t = 8.4, p < 0.00000; y t = 9.5, p < 0.00000). Al comparar por prueba t aplicada a muestras dependientes el índice de O'Leary basal versus cada una de las evaluaciones de seguimiento también se observaron diferencias significativas en los dos conjuntos (grupo 1: p = 0.003, p = 0.0006 y p = 0.0017; grupo 2: p = 0.007, p = 0.0006 y p = 0.0002). Conclusión: La instrucción dental y motivación del paciente fueron determinantes hacia el buen desempeño del cepillado de los dientes y remoción de placa en el par de colectivos, es decir, la reafirmación de la técnica de Fones incrementa gradualmente la mejoría de la forma de uso del cepillo en niños con SD. Ambos métodos con CM y con CE fueron efectivos a fin de remover significativamente la placa, observándose una mayor mejoría en el grupo con CE, sugiriendo que éste disminuye la dificultad de la higiene bucal en personas con SD. Esta línea de investigación es importante en el beneficio de la condición oral de esta población (AU)

Introduction: Oral health in patients having Down syndrome (DS) is a challenge since the changes in motor skills caused by intellectual disability (ID) deteriorate tasks such as the removal of biofilm or dental plaque (DP) with brushing. The effectiveness of electric toothbrushes (ET) compared to manual toothbrushes (MT) in DS patients remains debatable since no homogeneity of results has been found. Further research on the subject is advisable as DS is considered the most frequent chromosomal alteration and the leading cause of ID in the world. Objective: To know the effectiveness of the ET in contrast to the MT for the removal of DP in Mexican DS patients between six and 14 years old. Material and methods: Experimental cross-sectional study, with the pairing of DS subjects of both genders according to age (six to 14 years), assigning the brush to be used (group 1 MT or group 2 ET). Dental education and brushing were performed employing the Fones technique and DP control before and after brushing employing the O'Leary index for three days. The results were analyzed using descriptive and inferential statistics (Lilliefors normality test, t-test for independent and dependent variables). A significance test p < 0.05 was accepted. Results: The t-test for independent samples showed an improvement in the increase of the O'Leary index in the complete group in the three days of follow-up respectively (t = 6.9, p < 0.00002; t = 8.4, p < 0.00000; and t = 9.5, p < 0.00000). When comparing by t-test for dependent samples the baseline O'Leary index versus each of the follow-up evaluations, significant differences were also observed in both groups (group 1: p = 0.003, p = 0.0006 and p = 0.0017; group 2: p = 0.007, p = 0.0006 and p = 0.0002). Conclusion: The dental education and motivation of the patient were decisive for the good performance of tooth brushing and removal of the plaque in both groups. The reaffirmation of the Fones technique gradually increases the improvement of the brushing technique in DS children. Both brushings using MT and ET were effective in removing the biofilm significantly. However, a greater improvement was observed in the group with ET, suggesting that it reduces their difficulty with tooth brushing. This line of research is important to benefit the oral condition of this population (AU)

Force degradation of elastomeric chains after storage time and mechanical brushing

Abstract The purpose of this in vitro study was to evaluate the force decrease of different elastomeric chains after different times: initial, 10 minutes, 1 day, 28 days and after mechanical brushing. Twenty orthodontic elastomeric chains segments were utilized for each commercial brand. Initially, the elastomeric chain of 15mm long were immediate stretched up to 20 mm in an Instron and the force was measured in gf. After all specimens were placed stretched on rectangular acrylic jigs with distance of 20 mm, immersed in deionized water at 37oC for 10 minutes and the force (gf) was measured again. Five test measurements of remaining force were made at the following time intervals: initial, 10 minutes, 1 day, 28 days and mechanical brushing. After 28 days, the acrylic plates with the specimens were adapted in the mechanical brushing machines (MSCT 3) and the elastomeric chains were submitted to mechanical brushing and the force (gf) measure again. The force (gf) was submitted to mixed-model ANOVA and Sidak post-hoc test (α=0.05). A statistically significant reduction in the force was found for all orthodontic elastomeric chain types after 1 day, 28 days and mechanical brushing (p<0.05). Morelli and 3M Unitek elastomeric chains showed significantly higher force than Abzil and GAC (p<0.05) after 1 day, 28 days and mechanical brushing. In conclusion, the force delivered by all elastomeric chains decayed rapidly over time. Morelli and 3M Unitek elastomeric chains consistently had a significantly greater force after mechanic brushing, while GAC the lowest.

Resumo O objetivo deste estudo in vitro foi avaliar a redução da força de diferentes cadeias elastoméricas após diferentes tempos: inicial, 10 minutos, 1 dia, 28 dias e após escovação mecânica. Vinte segmentos de cadeias elastoméricas ortodônticas foram utilizadas para cada marca comercial. Inicialmente, a cadeia elastomérica de 15 mm de comprimento foi esticada imediatamente até 20 mm na Instron e a força foi medida em (gf). Após, todas as amostras foram adaptadas esticadas em placas retangulares de acrílico na distância de 20 mm, imersas em água deionizada a 37o C por 10 minutos e a força (gf) foi medida novamente. Cinco medidas de força foram feitas nos seguintes intervalos de tempo: inicial, 10 minutos, 1 dia, 28 dias e após a escovação mecânica. Após 28 dias, as placas de acrílico com as amostras foram adaptadas na máquina de escovação (MSCT 3) e as cadeias elastoméricas foram submetidas a escovação mecânica e a medida de força (gf) novamente. Os dados da força (gf) foram submetidos a ANOVA modelo misto e teste post-hoc de Sidak (α = 0,05). Uma redução estatisticamente significativa na força foi encontrada para todos os tipos de cadeia elastomérica ortodôntica após 1 dia, 28 dias e escovação mecânica (p<0,05). As cadeias elastoméricas Morelli e 3M Unitek apresentaram força significativamente superior em relação a Abzil e GAC (p<0,05) após 1 dia, 28 dias e escovação mecânica. Em conclusão, a força distribuída por todas as cadeias elastoméricas decaiu rapidamente com o tempo. As cadeias elastoméricas Morelli e 3M Unitek consistentemente tiveram uma força significativamente maior após a escovação mecânica, enquanto GAC a mais baixa.

Factors related to the presence of dental erosion and abrasion in peruvian adults / Factores relacionados con la presencia de erosión y abrasión dental en adultos peruanos

Introduction: Non-carious lesions are an oral health problem in adults, consequently it is necessary to create mechanisms for their diagnosis and prevention. Objective: To determine the frequency of erosion, abrasion and related factors in patients treated at a university dental clinic. Material and Methods: A cross-sectional study was conducted in a sample of 153 adults treated at a university clinic in Lima, Peru, in 2018. Personal aspects (age, sex, characteristics of saliva), dietary factors, health condition, oral habits, and tooth brushing were identified. The presence of abrasion was determined according to clinical criteria through direct observation. Erosion was identified using the Basic Erosive Wear index. Generalized linear models with Poisson distribution with robust variances were used. Results: The frequency of dental abrasion (70.6%) is higher than erosion (26.1%). The presence of erosion is associated with asthma (PR= 2.11), abrasion is related to age and poor dental hygiene habits (PR= 1.67 and 1.30, respectively). Conclusion: The presence of dental abrasion is greater than dental erosion. Age and poor dental habits are factors associated with tooth abrasion. The characteristics of saliva regarding pH and salivary flow were within normal p-values.

Introducción: Las lesiones no cariosas son un problema de salud bucal en adultos siendo necesario establecer mecanismos para su diagnóstico y prevención. Objetivo: Determinar la frecuencia de erosión, abrasión y factores relacionados, en pacientes que acudieron a una clínica odontológica docente universitaria. Material y Métodos: Estudio transversal en una muestra de 153 adultos asistentes a una clínica docente asistencial de Lima en el 2018. Se identificaron factores personales (edad, sexo, características de la saliva), factores dietéticos, condición de salud, hábitos orales y cepillado dental. A través de la observación directa se identificó la presencia de abrasión de acuerdo a criterios clínicos, y de erosión utilizando el índice Basic Erosive Wear. Se utilizaron modelos lineales generalizados con distribución de Poisson con varianzas robustas. Resultados: La frecuencia de abrasión dentaria (70,6%) es mayor que la erosión (26,1%). La presencia de erosión está asociada al asma (RP= 2,11), la abrasión está relacionada con la edad y los malos hábitos de la higiene dental (RP= 1,67 y 1,30 respectivamente). Conclusion: La presencia de la abrasión dental es mayor que la erosión dental. La edad y los hábitos dentales inadecuados son factores asociados con la abrasión dentaria. Las características de la saliva en pH y flujo salival estuvieron dentro de los valores normales.