Mast cells in oral lichen planus and oral lichenoid lesions related to dental amalgam contact

Abstract The aim of this study was to analyze the expression of mast cell markers toluidine blue, c-kit, and tryptase and presence of mononuclear inflammatory cells in oral lichen planus (OLP) and oral lichenoid lesions related to dental amalgam. Nineteen specimens of OLP, OLLC, and healthy oral mucosa were selected. Mononuclear inflammatory cells were analyzed. Histochemical and immunohistochemical analyses were performed using toluidine blue, anti-c-kit and anti-tryptase reagents, and the results were quantified in areas A and B of connective tissue. Mast cells of all OLP and OLLC samples were positive for toluidine blue, c-kit, and tryptase. The density of toluidine blue+, c-kit+ and tryptase+ mast cells was higher in tissue with OLP and OLLC compared with healthy controls (p < 0.05). No difference was noted in mast cells density between OLP and OLLC (p > 0.05). The density of tryptase+ mast cells was higher in the subepithelial region (area A) than the region below it (Area B) in OLLC (p = 0.047). The mononuclear inflammatory cell density was higher in OLLC compared to OLP, but without statistical significance (p > 0.05). A positive statistical correlation was found between mononuclear immune cells and density of c-kit+ and tryptase+ mast cells in OLP (r = 0.943 and r = 0.886, respectively). Our data demonstrate that the etiopathogenesis process of OLP and OLLC modulates the expansion and degranulation of mast cells; mast cells density, however, was similar between OLP and OLLC. The distribution of mast cells appears to vary along the lamina propria.

Overweight/obesity and dental caries in Brazilian children and adolescents: a systematic review and meta-analysis

Abstract This review aimed to assess the association between overweight/obesity and dental caries in Brazilian children/adolescents. Searches were performed in the Web of Science, Scopus, Cochrane, PubMed, Embase and SciELO, Lilacs and Open Grey literature databases up to June 2022. The Joanna Briggs Institute checklist for analytical cross-sectional studies, the checklist for cohort studies, and the checklist for case-control studies were used. A total of 41 publications were included, and 15 meta-analyses were performed. The authors analyzed the differences in weighted mean difference (MD) and odds ratios (OR), and their corresponding confidence intervals (CI) (95%) for dental caries among eutrophic and obese and/or overweight children/adolescents. Meta-analyses showed that there was no association between overweight and/or obesity and dental caries in Brazilian children/adolescents for most anthropometric reference curves using BMI (Body Mass Index). A greater experience of dental caries was associated with well-nourished adolescents in permanent dentition, compared with obese individuals in the same dentition, as classified by the CDC 2000 curve (OR = 2.53, 95% CI;1.49-4.29; p = 0.0006; I2 = 0%) in dichotomous outcome studies, and (MD = 0.61, 95%CI: 0.08-1.15; p = 0.02; I2 = 0%) in continuous studies. The strength of the evidence of the results was classified as very low, low or moderate. It was concluded that there is no association between overweight and/or obesity and dental caries in Brazilian children/adolescents for most anthropometric reference curves using BMI. A greater experience of dental caries was associated with well-nourished adolescents in permanent dentition, compared with obese individuals in the same dentition, as classified by the CDC 2000 curve.

Plant extracts used in Brazil for treatment of oral ulcers and mucositis: systematic review / Extratos vegetais utilizados no Brasil para tratamento de úlceras orais e mucosite: revisão sistemática

Objective: To identify and analyze plant extracts used in Brazil for the treatment of oral ulcers and oral mucositis. Material and Methods: A systematic review was registered in PROSPERO (CRD 42018102184) and performed following the PRISMA protocol. The databases searched were PubMed, Web of Science, Scopus, Lilacs, Scielo, the Brazilian Dentistry Library. Manual searches were also performed. Results: Initially, 440 studies were found, of which 392 were excluded after reading the titles and abstracts. A total of 29 articles were read in full and 11 studies were excluded, resulting in 18 articles included in the systematic review. Nine plant species were identified in five clinical trials and 13 in vivo studies, with Chamomila recutita being the most used (33.3% of the studies). Chamomila recutita showed more promising results for analgesic, anti-inflammatory, and healing properties. Calotropis procera latex significantly decreased (p<0.05) inflammatory mediators, such as TNF-α and IL-1ß in oral mucositis induced in rats. Eupatorium laevigatum showed anti-inflammatory activity and analgesic action on oral ulcers. Carapa guianensis Aubl. reduced the severity and painful symptoms of oral mucositis and exhibited better results compared to the use of low power laser. Curcuma longa L accelerated re-epithelialization and resolution of inflammatory processes. Spondias mombin reduced oxidative stress and inflammation caused by oral mucositis and helped on healing it. Extracts of Aloe barbadensis Miller or Aloe vera showed anti-inflammatory action but did not help in the healing process of oral ulcers. Copaifera reticulata Ducke oil did not induce improvement in the healing process, nor did it show an anti-inflammatory effect. Malva sylvestrisdid not show an anti-inflammatory action on oral lesions in humans or rats. The assessment of methodological heterogeneity showed the impossibility of performing a meta-analysis. Risk of bias varied from low to high. Conclusion: The plant species most used and with the best results for the treatment of oral ulcerations and oral mucositis was Chamomilla recutita. Spondias mombin L., Curcuma longa L., Carapa guianensis Aubl and Calotropis procera showed good results in the treatment of oral mucositis, while Eupatorium laevigatum was efficient in the treatment of ulcers of traumatic origin. Malva sylvestris, Copaifera reticulata Ducke, and Aloe barbadensis Miller did not exhibit significant results (AU)

Objetivo: Identificar e analisar extratos vegetais utilizados no Brasil para o tratamento de úlceras orais e mucosite oral. Material e Métodos: Uma revisão sistemática foi registrada no PROSPERO (CRD 42018102184) e realizada seguindo o protocolo PRISMA. As bases de dados pesquisadas foram PubMed, Web of Science, Scopus, Lilacs, Scielo, Biblioteca Brasileira de Odontologia. Buscas manuais também foram realizadas. Resultados: Inicialmente, foram encontrados 440 estudos, dos quais 392 foram excluídos após a leitura dos títulos e resumos. Um total de 29 artigos oram lidos na íntegra e 11 estudos foram excluídos, resultando em 18 artigos incluídos na revisão sistemática. Nove espécies vegetais foram identificadas em cinco ensaios clínicos e 13 estudos in vivo, sendo a Chamomila recutita a mais utilizada (33,3% dos estudos). A Chamomila recutita apresentou resultados mais promissores quanto às propriedades analgésicas, anti-inflamatórias e cicatrizantes. O látex de Calotropis procera diminuiu significativamente (p<0,05) os mediadores inflamatórios, como TNF-α e IL-1ß, na mucosite oral induzida em ratos. Eupatorium laevigatumapresentou atividade anti-inflamatória e ação analgésica em úlceras orais. Carapa guianensis Aubl. reduziu a gravidade e os sintomas dolorosos da mucosite oral e apresentou melhores resultados em comparação com o uso do laser de baixa potência. Curcuma longa L. acelerou a reepitelização e resolução de processos inflamatórios. Spondias mombinreduziu o estresse oxidativo e a inflamação causadas pela mucosite oral e ajudou na sua cicatrização. Extratos de Aloe barbadensis Miller ou Aloe vera apresentaram ação anti-inflamatória, mas não auxiliaram no processo de cicatrização de úlceras orais. O óleo de Copaifera reticulata Ducke não induziu melhora no processo cicatricial, nem apresentou efeito anti-inflamatório. Malva sylvestris não apresentou ação anti-inflamatória em lesões orais em humanos ou ratos. A avaliação da heterogeneidade metodológica mostrou a impossibilidade de realizar uma meta-análise. O risco de viés variou de baixo a alto. Conclusão: A espécie vegetal mais utilizada e com melhores resultados para o tratamento de ulcerações orais e mucosite oral foi a Chamomilla recutita. Spondias mombin L., Curcuma longa L., Carapa guianensis Aubl e Calotropis procera apresentaram bons resultados no tratamento da mucosite oral, enquanto Eupatorium laevigatum foi eficiente no tratamento de úlceras de origem traumática. Malva sylvestris, Copaifera reticulata Duckee Aloe barbadensis Miller não apresentaram resultados significativos(AU)

Diagnosis and prevalence of probable awake and sleep bruxism in adolescents: an exploratory analysis

Abstract The aims of this study were to perform an exploratory analysis of probable awake (AB) and sleep bruxism (SB) prevalence using of different diagnosis criteria based on the International Consensus; evaluate the associations between self-report and clinical signs/symptoms in adolescents. Participated in this cross-sectional study 403 adolescents aged 12- to 19-years-old enrolled in public and private schools from Belo Horizonte, Brazil. Parents/caregivers answered a questionnaire about sociodemographic status and adolescents' health status. Adolescents answered a questionnaire evaluating AB (e.g., grinding and clenching) and SB (e.g., grinding, bracing, and thrusting) activities and frequent headaches. A clinical examination was performed on adolescents to evaluate bruxism clinical signs/symptoms (pain upon palpation on masseter and temporal, linea alba, indentation on the tongue and attrition wear severity). Descriptive statistics and Pearson's Qui-square test were performed (P≤0.05). Adolescents mean age was 14.3±1.5 years, and 58.1% were female. Self-report of SB was identified in 31% of participants and self-report of AB in 51.6%. Almost all adolescents (99%) presented at least one tooth with attrition wear (98.5% on enamel and 0.5% on dentin), with a mean number of 12.4±5.7 teeth. Depending on the diagnosis criteria, the prevalence of probable SB and AB varied from 0- 99% and 0.2- 99%, respectively. A high inconsistency was found for the prevalence of probable AB and SB in adolescents, which were influenced by the different clinical sings/symptoms used as diagnosis criteria. Frequent headaches and pain upon palpation on masseter and temporal muscle were associated to self-report of AB and SB among adolescents.

Resumo Os objetivos deste estudo foram realizar uma análise exploratória da prevalência de provável bruxismo em vigília (BV)e do sono (BS) utilizando diferentes critérios de diagnóstico baseados no Consenso Internacional; avaliar a associação entre o autorrelato e os sinais/sintomas clínicos em adolescentes. Participaram deste estudo transversal 403 adolescentes de 12 a 19 anos de idade matriculados em escolas públicas e privadas de Belo Horizonte, Brasil. Os pais/responsáveis responderam um questionário sobre dados sociodemográficos e estado de saúde dos adolescentes. Os adolescentes relataram atividades do BV (ranger e apertar) e BS (ranger, bracing e thrusting) e dores de cabeça frequentes. Um exame clínico foi realizado nos adolescentes para avaliar os sinais/sintomas clínicos do bruxismo (dor à palpação nos músculos masseter e temporal, marcas de endentação na língua e linha alba, desgaste dentário por atrição). Análises descritiva e teste Qui-quadrado de Pearson foram realizados (P≤0,05). A média de idade dos adolescentes foi de 14,3±1,5 anos e 58,1% eram do sexo feminino. O autorrelato de BS foi identificado em 31% dos participantes e o autorrelato do BV em 51,6%. Quase a totalidade dos adolescentes (99%) apresentaram pelo menos um dente com desgaste dentário (98,5% em esmalte; 0,5% em dentina), com média de 12,4±5,7 dentes acometidos. Dependendo do critério de diagnóstico, a prevalência do provável BS e BV variou de 0- 99% e 0,2- 99%, respectivamente. Uma grande inconsistência foi identificada na prevalência de provável BV e BS em adolescentes, que foram influenciadas pelos diferentes sinais/sintomas usados como critério de diagnóstico. Dores de cabeça frequentes e dor à palpação no masseter e temporal foram associados ao autorrelato de bruxismo em crianças e adolescentes.

Effectiveness of lip repositioning in the treatment of excessive gingival display: systematic review and meta-analysis / Eficacia del reposicionamiento de labios en el tratamiento de la exposición gingival excesiva: revisión sistemática y metanálisis

Background: The objective of this systematic review and meta-analysis was to answer the questions ''Does lip repositioning surgery reduce the amount of gingiva exposed in the smile in individuals with excessive gingival display EGD (excessive gingival display)?'' and ''Is the reduction of the amount of gingiva exposed when smiling obtained with lip repositioning surgery stable over time?'' to evaluate the effectiveness of lip repositioning surgery for correcting EGD on smiling. Materials and Methods: A systematic structured search was carried out in five databases without data restriction. Studies reporting the degree of reduction in gingival ex-posure after lip repositioning surgery were included. Study selection, data extraction, and risk of bias assessment were performed in duplicate Results: One hundred sixty-four references were retrieved and eleven studies met the eligibility criteria. Meta-analysis demonstrated that lip repositioning surgery results in a significant reduction in the amount of exposed gingival tissue (mean difference = -3.03; confidence interval = -3.55; -2.52). In addition, the results remained stable in the evaluated follow-up periods (1, 3, 6 and 12 months). Included studies had a low risk of bias. Conclusions: Lip repositioning surgery is effective for the treatment of EGD on smiling and exhibits stable results in the evaluated periods. The study was registered (CRD42020184866) in the international prospective register of systematic reviews (PROSPERO)

Antecedentes: el objetivo de esta revisión sistemática y metanálisis fue responder a las preguntas "¿La cirugía de reposicionamiento de labios reduce la cantidad de encía expuesta en la sonrisa en personas con exposición gingival excesiva (EGE)?" y "¿La reducción de la cantidad de encía expuesto al sonreír obtenido con cirugía de reposicionamiento de labios estable en el tiempo?" para evaluar la efectividad de la cirugía de reposicionamiento de labios para corregir la EGE al sonreír. Materiales y Métodos: Se realizó una búsqueda sistemática estructurada en cinco bases de datos sin restricción de datos. Se incluyeron los estudios que informaron el grado de reducción de la exposición gingival después de la cirugía de reposición de labios. La selección de estudios, la extracción de datos y la evaluación del riesgo de sesgo se realizaron por duplicado. Resultados: Se recuperaron ciento sesenta y cuatro referencias y once estudios cumplieron con los criterios de elegibilidad. El metanálisis demostró que la cirugía de reposicionamiento de labios da como resultado una reducción significativa en la cantidad de tejido gingival expuesto (diferencia de medias = -3,03; intervalo de confianza = -3,55; -2,52). Además, los resultados se mantuvieron estables en los periodos de seguimiento evaluados (1, 3, 6 y 12 meses). Los estudios incluidos tenían un bajo riesgo de sesgo. Conclusión: La cirugía de reposicionamiento de labios es efectiva para el tratamiento de la EGE al sonreír y presenta resultados estables en los períodos evaluados. El estudio fue registrado (CRD42020184866) en el registro prospectivo internacional de revisiones sistemáticas (PROSPERO).

Semantic equivalence of the Brazilian version of the Patient Satisfaction Questionnaire (B-PSQ)

Abstract The Patient Satisfaction Questionnaire (PSQ) is a self-administered instrument to assess adolescent patients' satisfaction with orthodontic treatment. A pre-existing North American instrument was further explored in the Netherlands. Semantic equivalence is part of cross-cultural adaptation and is necessary to achieve a valid and reliable instrument for a specific culture. The present study aimed to evaluate the semantic equivalence of the items, subscales, and overall PSQ between the original English version and the Brazilian Portuguese language version (B-PSQ). The PSQ has 58 items, distributed across 6 subscales: doctor-patient relationship, situational aspects of the clinic, dentofacial improvement, psychosocial improvement, dental function, and a residual category. Semantic equivalence was evaluated according to the following methods: (1) independent translations to Portuguese by two translators, both native in Brazilian Portuguese and fluent in English; (2) an expert committee drafted the first summarized version in Portuguese; (3) two independent back-translations into English by two native English-speaking translators fluent in Portuguese; (4) committee review; (5) committee drafted a summarized version of the back-translations; (6) expert committee drafted the second summarized version in Portuguese; (7) pre-test of the instrument using individual semi-structured interviews with 10 adolescents; (8) review and final version of the B-PSQ. Semantic equivalence between the original and the Brazilian versions of the questionnaire was achieved through diligent and rigorous methods, with effective translation and expert evaluations, incorporating the opinions of the target population.

Resumo O Patient Satisfaction Questionnaire (PSQ) é um instrumento autorrelatado específico para avaliar a satisfação de pacientes adolescentes com o tratamento ortodôntico. Um instrumento norte-americano pré-existente foi mais explorado na Holanda. A equivalência semântica faz parte da adaptação transcultural e é necessária para se obter um instrumento válido e confiável para uma cultura específica. O presente estudo teve como objetivo avaliar a equivalência semântica dos itens, subescalas e escore geral do PSQ entre a versão original em inglês e a versão em português do Brasil (B-PSQ). O PSQ possui 58 itens, distribuídos em 6 subescalas; relação médico-paciente, aspectos situacionais da clínica, melhora dentofacial, melhora psicossocial, função dentária e uma categoria residual. A equivalência semântica foi avaliada de acordo com o seguinte método: 1) traduções independentes para o português por dois tradutores, ambos nativos em português brasileiro e fluentes em inglês; 2) um comitê de experts elaborou a primeira versão síntese em português; 3) duas retro-traduções independentes para o inglês por dois tradutores nativos de língua inglesa fluentes em português; 4) revisão do comitê; 5) o comitê elaborou uma versão síntese das retro-traduções; 6) comitê de experts redigiu a segunda versão síntese em português; 7) pré-teste do instrumento por meio de entrevistas individuais semiestruturadas com 10 adolescentes; 8) revisão e versão final do B-PSQ. A equivalência semântica entre as versões original e brasileira do questionário foi alcançada por meio de métodos cuidadosos e rigorosos, com tradução eficaz e avaliações de experts, incorporando as opiniões da população-alvo.

Dental anomalies in individuals with osteogenesis imperfecta: a systematic review and meta-analysis of prevalence and comparative studies

Abstract Background Osteogenesis imperfecta (OI) is a rare genetic disorder primarily caused by mutations in the genes involved in the production of type 1 collagen. OI is also known as brittle bone disease. Objective This study aims to describe the prevalence of dental anomalies (except dentinogenesis imperfecta) in individuals with OI, and compare the prevalence of dental anomalies between individuals with and without OI and between individuals with different types of OI. Search methods Searches in PubMed, Web of Science, Scopus, Ovid, and gray literature were performed in October 2022. Selection criteria Observational studies (with or without a comparison group) that evaluated the prevalence of dental anomalies in individuals with OI. Data collection and analysis: Data items were extracted by two authors. Quality assessment employing the Joanna Briggs Institute checklists and meta-analyses was conducted. Results were provided in prevalence values and odds ratio (OR) / 95% confidence interval (CI). Strength of evidence was determined. Results Eighteen studies were included. Most prevalent dental anomalies in individuals with OI included pulp obliteration (46.4%), dental impaction (33.5%), dental impaction of second molars (27%), and tooth agenesis (23.9%). Individuals with OI type III/IV had 20.16-fold greater chance of exhibiting tooth discoloration in comparison with individuals with OI type I (CI: 1.10-370.98). In comparison with the group without OI, the individuals with OI had 6.90-fold greater chance of exhibiting dental impaction (CI: 1.54-31.00). High methodological quality was found in 47% of the studies. Strength of evidence was low or very low. Conclusions Pulp obliteration, dental impaction, and tooth agenesis were the most prevalent dental anomalies in the OI group. Individuals with OI were more likely to have dental impaction than individuals without OI. Individuals with OI type III/IV (severe-moderate) are more likely to have tooth discoloration than individuals with OI type I (mild).

Tooth wear due to dental attrition among 12-year-old adolescents / Desgaste dentário por atrição entre adolescentes de 12 anos de idade

Aim: To evaluate the prevalence and distribution of tooth wear due to dental attrition among 12-year-old adolescents according to their gender, reports of tooth grinding during sleep/while awake (bruxism), and sleep features related to sleep-disordered breathing. Methods: A cross-sectional study was conducted with 172 adolescents from southeast Brazil. Parents/caregivers answered questions about sociodemographic characteristics; reports of adolescents' tooth grinding during sleep, and sleep features (e.g. sleep duration and position, snoring, drooling on the pillow) in the previous two weeks. Adolescents self-reported the occurrence of tooth clenching/grinding while awake in the previous two weeks. Tooth wear due to dental attrition was assessed by a previously calibrated researcher, using a validated 5-point analogical ordinal occlusal/incisal tooth wear grading scale, with scores ranging from 0 (no wear) to 4 (loss of crown height ≥ 2/3), depending on tooth wear severity. Descriptive statistics and the Mann-Whitney test (p < 0.05) were performed to identify differences in tooth wear due to the distribution of dental attrition, according to adolescents' characteristics. Results: Most adolescents were female (58.0%) and 81.6% of the participants presented tooth wear due to dental attrition within the enamel. Adolescents who snored had a higher number of incisors with tooth wear due to dental attrition (p = 0.035). Females showed a higher number of canines with tooth wear due to dental attrition (p = 0.020). Adolescents whose parents reported tooth grinding during sleep presented a higher number of bicuspids with tooth wear due to dental attrition (p = 0.001). Conclusion:Tooth wear due to dental attrition within the enamel was observed in most adolescents. The distribution, depending on specific groups of teeth, was higher among female adolescents, adolescents' whose parents reported tooth grinding, and adolescents who snored during sleep.

Objetivos: Avaliar a prevalência e distribuição de DDA entre adolescentes de 12 anos de acordo com o sexo, relato de ranger de dentes durante o sono e vigília (bruxismo) e características relacionadas a desordens respiratórias do sono.Método: Desenvolveu-se um estudo transversal com 172 adolescentes do sudeste do Brasil. Seus pais/responsáveis responderam um questionário contendo informações sociodemográficas, relato sobre os filhos rangerem os dentes durante o sono e hábitos do sono dos filhos (duração do sono, posição que dorme, roncar, babar no travesseiro) nas duas últimas semanas. Adolescentes relataram ocorrência de ranger/apertar de dentes durante a vigília nas duas últimas semanas. DDA foi avaliado por um pesquisador previamente calibrado através de uma escala analógica ordinal de cinco pontos de desgaste dentário para faces oclusal/incisal previamente validada, com escores variando de 0 (sem desgaste) a 4 (perda da coroa em altura ≥ 2/3), dependendo da gravidade do desgaste. Análises descritivas e teste de Mann-Whitney (p < 0,05) foram realizados para identificar as diferenças na distribuição de DDA de acordo com as características dos adolescentes.Resultados: A maioria dos adolescentes eram meninas (58,0%) e 81,6% dos participantes apresentaram DDA em esmalte em algum elemento dentário. Adolescentes que rocavam apresentavam mais incisivos com DDA (p = 0.035). Meninas apresentaram maior número de caninos com DDA (p = 0.020). Adolescentes que rangiam os dentes durante a noite apresentaram maior número de pré-molares com DDA (p = 0.001).Conclusão: Desgaste dentário por atrição em esmalte foi observado na maioria dos adolescentes. A distribuição, dependendo de grupos de dentes específicos, foi maior entre meninas, adolescentes que roncavam durante o sono e que rangiam os dentes durante o sono.

Contribution of public oral pathology services to the diagnosis of oral and oropharyngeal cancer in Brazil

Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients' histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil's Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System.

Influence of risedronate on orthodontic tooth movement in rodents: a systematic review and case report

ABSTRACT Introduction: Bisphosphonates have an inhibitory impact on osteoclastic activity, reducing bone resorption. However, the influence of risedronate on tooth movement is not well-defined. Objective: This systematic review assessed the effect of risedronate intake on orthodontic tooth movement. A case report was also provided. Methods: Two independent reviewers searched six databases (PubMed, Web of Science, Ovid, Lilacs, Scopus, and Open Grey). The searches were carried out in April/2020, and an update was set in place in June/2023. Therefore, the searches considered a timeline from the databases' inception date until June/2023, with no publication date and/or language restrictions. The clinical question focused on evaluating the orthodontic tooth movement and relapse movement (Outcome) in animals (Population) exposed to risedronate (Exposure), compared to control groups (Comparison). The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines were applied, and the protocol was registered in PROSPERO (CRD42020168581). The risk of bias was determined using the Systematic Review Centre for Laboratory Animal Experimentation protocol (SYRCLE). Results: Two studies in rats and one in guinea pigs were included in the systematic review. The studies reported a decrease in orthodontic tooth movement, a reduction in the relapse movement, and a reduced number of positive tartrate-resistant acid phosphatase (TRAP) cells, with a significantly reduced number of bone gaps after the administration of risedronate in rats. A case report illustrated the effects of risedronate administration in one patient. Conclusion: Based on the systematic review, risedronate seems to impair orthodontic tooth movement and relapse due to a decrease in bone resorption cells.

RESUMO Introdução: Os bifosfonatos têm um impacto inibitório na atividade osteoclástica, reduzindo a reabsorção óssea. No entanto, a influência do risedronato no movimento dentário não está bem definida. Objetivo: Esta revisão sistemática avaliou o efeito do uso de risedronato no movimento ortodôntico dos dentes. Um relato de caso também é apresentado. Métodos: Dois revisores independentes pesquisaram seis bases de dados (PubMed, Web of Science, Ovid, Lilacs, Scopus e Open Grey), considerando o período de abril de 2020 até junho de 2023, sem restrições de data e/ou idioma de publicação. A questão clínica focou em avaliar o movimento ortodôntico dos dentes e movimento de recidiva (resultado) em animais (população) expostos ao risedronato (exposição) em comparação com grupos de controle (comparação). Foram aplicadas as Diretrizes Preferenciais para Revisão Sistemática e Metanálise (PRISMA) e um protocolo foi registrado no PROSPERO (CRD42020168581). O risco de viés foi determinado utilizando o protocolo do Centro de Revisão Sistemática para Experimentação em Animais de Laboratório (SYRCLE). Resultados: Dois estudos em ratos e um em porquinhos-da-índia foram incluídos na revisão sistemática. Os estudos relataram uma diminuição no movimento ortodôntico dos dentes, uma redução no movimento de recidiva e um número reduzido de células positivas à fosfatase ácida tartarato-resistente (TRAP) com um número significativamente reduzido de falhas ósseas após a administração de risedronato em ratos. Um relato de caso ilustrou os efeitos da administração de risedronato em uma paciente. Conclusão: Com base na revisão sistemática, o risedronato parece interferir no movimento ortodôntico dos dentes e na recidiva devido a uma diminuição nas células de reabsorção óssea.

Effects of tobacco on the DNA of smokers and non-smokers affected by OSCC: systematic review and meta-analysis

Abstract Scientific evidence about genetic and molecular changes in oral squamous cell carcinoma (OSCC) among smokers and non-smokers is inconclusive. This systematic review and meta-analysis assessed the effects of tobacco on the DNA of individuals with OSCC based on protein mutations. Electronic searches were conducted on PubMed, Ovid, Web of Science, and Scopus to identify observational studies published up to January/2022. The Joanna Briggs Institute tool was used for the critical appraisal of studies. The certainty of the evidence was evaluated. Twenty-three studies assessing 4,060 individuals (2,967 smokers vs. 1,093 non-smokers) were included in this review. Fifteen groups of proteins/genes were investigated. Analysis of the quality of articles revealed low risk of bias in most studies. The certainty of the evidence was very low. The meta-analysis confirmed no significant difference between smokers and non-smokers with respect to damage to GSTM1 (OR: 0.60; 95%CI: 0.30-1.18), GSTT1 (OR: 1.18; 95%CI:0.49-2.83), hydrolase proteins (Ku70 and Ku80) (OR: 0.74; 95%CI: 0.18-3.05), and transferase proteins (GSTM1, GSTT1, GSTM3) (OR: 0.74; 95%CI: 0.47-1.18). Most of the studies included showed that smokers are more likely to exhibit genetic instability. However, the meta-analysis revealed that smokers do not necessarily have more genetic alterations in the DNA than non-smokers.

Efetividade do uso de instruções digitais (apps e mensagens de telefone) comparadas às instruções convencionais (verbais e escritas) na melhora da higiene bucal em pacientes ortodônticos: uma revisão sistemática e meta-análise / Effectiveness of using digital instructions (apps and phone messages) compared to conventional instructions (verbal and written) in improving oral hygiene in orthodontic patients: a systematic review and meta-analysis

Objetivo: Comparar o efeito do uso de instruções convencionais (verbais ou escritas) e instruções digitais (apps e mensagens de telefone) na cooperação e melhora da higiene oral dos pacientes ortodônticos.Métodos: Foram conduzidas buscas em seis bases de dados. Seleção dos estudos, extração de dados e análise do risco de viés dos artigos com a ferramenta Cochrane foram realizadas. Resultados de meta-análises foram apresentados em diferença média (DM) e intervalo de confiança (IC). Resultados: Seis estudos foram incluídos. No geral, os estudos mostraram que indivíduos que recebem instruções convencionais e digitais de higiene bucal apresentam uma melhora do índice de placa e índice gengival ao longo do tratamento ortodôntico (p < 0,05). Os indivíduos que só recebem instruções convencionais não apresentam melhora dos índices (p > 0,05). Os resultados são confirmados por duas meta-análises, sendo o índice de placa (DM = -1,30, IC = -2,52 - -0,08) e o índice gengival (DM = -0,27, IC = -0,42 - -0,12) melhor entre indivíduos que receberam instruções convencionais e digitais em comparação a indivíduos que receberam somente instruções convencionais. Meta-análises mostraram que não há diferença para índice de placa (DM = 0,57, IC = -0,61 ­ 1,74) e índice gengival (DM = -0,46, IC = -1,52 - 0,59) durante o tratamento entre indivíduos que somente receberam instruções de higiene convencionais e aqueles que só receberam instruções digitais. Indivíduos que só receberam instruções convencionais apresentam um aumento de lesões de mancha branca ao longo do tratamento (p < 0,05). O risco de viés variou de baixo a alto. Conclusão: Instruções digitais junto às convencionais são eficientes na melhora da higiene bucal dos pacientes em tratamento ortodôntico.

Aim: To compare the effects of the use of conventional instructions (verbal or written) and digital instructions (apps and phone messages) for the cooperation and improvement of oral hygiene in orthodontic patients. Methods: Searches were conducted in six databases. Selection of studies, data extraction, and risk of bias analysis of articles were performed using the Cochrane tool. For meta-analysis results, mean difference (MD) and confidence interval (CI) were provided. Results: Six studies were included. Overall, studies demonstrated that individuals who received conventional and digital oral hygiene instructions show an improvement in both the plaque and gingival indices over the course of orthodontic treatment (p < 0.05). By contrast, individuals who only received conventional instructions showed no improvement in the indices (p > 0.05). The results were confirmed in two meta-analyses, with the plaque index (MD = -1.30, CI = -2.52 - -0.08) and the gingival index (MD = -0.27, CI = -0.42 - -0.12) presenting better outcomes among individuals who received conventional and digital instructions, as compared to individuals who received only conventional instructions. Meta-analyses showed that there is no difference between the plaque index (MD = 0.57, CI = -0.61 ­ 1.74) and the gingival index (MD = -0.46, CI = -1.52 ­ 0.59) concerning the course of treatment between individuals who only received conventional hygiene instructions and those who only received digital instructions. Individuals who only received conventional instructions showed an increase in white spot lesions throughout the treatment (p < 0.05). The risk of bias ranged from low to high. Conclusion: Both digital instructions and the conventional instructions are efficient in improving the oral hygiene of patients during orthodontic treatment.

Pathways that explain racial differences on edentulism among older adults: 2019 Brazil National Health Survey

Abstract This study aimed to evaluate the pathways that explain the association between race/skin color and edentulism in elderly Brazilians. This was a cross-sectional study using data from participants aged 60 years or older from the 2019 Brazilian National Health Survey, a nationally representative population-based sample. Data were obtained by a structured interview and participants were classified as edentulous if they reported having lost all natural teeth. Information on race, socioeconomic level, behavioral aspects, psychosocial aspects, and access to dental care was collected by interviewers using a questionnaire. The pathways between race/skin color and edentulism were analyzed using structural equation modeling. The final sample of the study included 22,357 participants. Most participants were white (51.5%; 95% confidence interval [CI]: 50.3-52.6), and 36.8% (95%CI: 35.7-37.9) were edentulous. Race/skin color was indirectly associated with edentulism via enabling factors. These findings suggest that socioeconomic inequalities are key in explaining racial inequalities in edentulism among Brazilian older adults.

Anatomical evaluation of the medial lingual foramen using cone-beam computed tomography: a retrospective study / Avaliação anatômica do forame lingual medial usando tomografia computadorizada de feixe cônico: um estudo retrospectivo

ABSTRACT Objective: To evaluate the frequency of medial lingual foramina present in the cortex of the mandible using cone beam computed tomography (CBCT). Methods: A total of 953 CBTC exams of the mandible were evaluated to determine the presence of canals in the mandibular midline, canal location in relation to the mental spine, canal diameter, distance to the base and alveolar crest of the mandible, trajectory of the canal, and coincidence measurements of the panoramic image containing the location of the canal in relation to the mental spine. Results: Foramina were located in three positions: above the mental spine (FSS) 89.2%, below the mental spine (FIS) 67.9%, and other positions (FOP) 21.3%. Non-edentulous individuals had a significantly higher number of FSS than did edentulous individuals (P<0.001). Male individuals presented a significantly greater distance from the FSS (P=0.001), FIS (P=0.045) and FOP (p=0.002) to the base of the mandible than female individuals. Younger individuals presented a significantly higher distance from the FSS (P=0.001) and FIS (P=0.001) to the alveolar crest of the mandible. Male individuals had a significantly greater FIS (P=0.002) and FOP (P=0.001) diameter than female individuals. Male individuals had a significantly higher number of bifurcations in FOP than female individuals (P=0.017). Conclusion: CBCT supplies the provider with a detailed assessment of the foramina and canals, which improves the quality of surgical planning and mitigates the chances of surgical intercurrences.

RESUMO Objetivo: Avaliar a frequência dos forames linguais mediais presentes na cortical da mandíbula por meio da tomografia computadorizada de feixe cônico (TCFC). Métodos: Um total de 953 exames de TCFC da mandíbula foram avaliados para determinar a presença de canais na linha média mandibular, localização do canal em relação ao tubérculo geniano, diâmetro do canal, distância à base e crista alveolar da mandíbula, trajetória da canal e medidas de coincidência da imagem panorâmica contendo a localização do canal em relação ao tubérculo geniano. Resultados: Os forames localizaram-se em três posições: acima do tubérculo (FSS) 89,2%, abaixo do tubérculo (FIS) 67,9% e outras posições (FOP) 21,3%. Indivíduos não edêntulos apresentaram um número significativamente maior de FSS do que indivíduos edêntulos (P <0,001). Indivíduos do sexo masculino apresentaram distâncias significativamente maior do FSS (P = 0,001), FIS (P = 0,045) e FOP (p = 0,002) até a base da mandíbula do que indivíduos do sexo feminino. Os indivíduos mais jovens apresentaram uma distância significativamente maior do FSS (P = 0,001) e FIS (P = 0,001) até a crista alveolar da mandíbula. Indivíduos do sexo masculino tiveram um diâmetro de FIS (P = 0,002) e FOP (P = 0,001) significativamente maior do que indivíduos do sexo feminino. Indivíduos do sexo masculino tiveram um número significativamente maior de bifurcações no FOP do que indivíduos do sexo feminino (P = 0,017). Conclusão: a TCFC fornece ao profissional uma avaliação detalhada dos forames e canais, o que melhora a qualidade do planejamento cirúrgico e diminui as chances de intercorrências.

Pathways of socioeconomic inequalities in self-perceived oral health

Abstract Although there is a large body of evidence of the influence of social determinants on oral health, information on the mechanisms by which these determinants operate is poorly documented. Therefore, we aimed to investigate the pathways through which socioeconomic inequalities may influence self-perceived oral health (SPOH) in Brazilian adults. This cross-sectional study used data from the National Health Survey (NHS) of 2019, with a representative sample of adults aged 18 to 59 years (n = 65,803). The outcome was SPOH, assessed by a global self-item. Structural equation modeling was used to test direct and indirect pathways connecting a latent variable for socioeconomic position (SEP) to SPOH via psychosocial, behavioral, and biological factors. Higher SEP was directly associated with better SPOH [standardized coefficient (SC) = 0.069; p < 0.01)] fewer depressive symptoms (SC = -0.059; p < 0.01), fewer missing teeth (SC = 0.131; p < 0.01), and more healthy behaviors (SC = 0.643; p < 0.01). Fewer depressive symptoms (SC = -0.141; p < 0.01), more healthy behaviors (SC = 0.242; p < 0.01), and fewer missing teeth (SC = 0.058; p < 0.01) were directly associated with good SPOH. Among specific indirect effects of SEP on SPOH, the behavioral pathway was the one that best explained this association (SC = 0.155). Socioeconomic inequities in SPOH are mediate by psychosocial, behavioral, and biological factors. This has implications for positioning health strategies in the social context in which people live, to facilitate healthy choices and promote good oral health.

Avaliação das taxas de sucesso de restaurações com cimento de ionômero de vidro de alta viscosidade durante o tratamento restaurador atraumático: uma revisão de escopo / Assessment of the success rates of high viscosity glass ionomer cement restorations in atraumatic restorative treatment: a scoping review

Objetivo: Esta revisão de escopo teve como objetivo comparar a taxa de sucesso de restaurações confeccionadas com cinco marcas diferentes de Cimento de Ionômero de Vidro de Alta Viscosidade (CIVAV), referência no Tratamento Restaurador Atraumático (Atraumatic Restorative Treatment-ART).Métodos: Buscas no PubMed, Scopus e Web of Science foram feitas. Buscas no OpenGrey e no Google Scholar também foram feitas. Critérios de inclusão foram estudos (ensaios clínicos e estudos de acompanhamento) que avaliavam a taxa de sucesso de restaurações confeccionadas com CIVAV. Não houve restrição de idioma ou data. Título/resumo e texto completo das referências encontradas foram avaliados por dois autores. Referências que preencheram os critérios de inclusão foram selecionadas. Extração de dados foi feita. Modelos de regressão de Cox foram idealizados para comparação da probabilidade de sucesso das restaurações com diferentes tipos de CIVAV. Os resultados foram relatados em razão das chances (RC) e intervalos de confiança (IC). Análises de Kaplan Meyer foram feitas para o cálculo da probabilidade de sucesso de restaurações com CIVAV. Resultados: Nove artigos avaliando o ChemFil Rock, ChemFlex, Equia Fil, Ketac Molar ou Fuji IX foram incluídos. Restaurações com cimentos de ionômero de vidro Fuji IX (RC = 3,51; IC = 1,96 ­ 6,28), Ketac Molar (RC = 4,01; IC = 2,40-6,68) e ChemFlex (RC = 4,20; IC = 1,01-17,66) apresentaram uma taxa de sucesso significativamente maior do que aquelas com ChemFil Rock. EquiaFil alcançou a segunda menor eficácia, ligeiramente maior que o ChemFil Rock. Conclusão:Restaurações com Fuji IX, Ketac Molar e ChemFlex apresentaram altas taxas de sucesso ao longo do tempo de avaliação do ART.

Aim: This scoping review aimed to compare the success rate of restorations using five different brands of High Viscosity Glass Ionomer Cement (HVGIC), reference material in Atraumatic Restorative Treatment (ART). Methods: Searches were carried out in PubMed, Scopus, and Web of Science. OpenGrey and Google Scholar searches were also performed. Inclusion criteria were studies (clinical trials and follow-up studies) that evaluated the success of restorations using HVGIC. Title, abstract, and full text of the references were evaluated by two authors. Articles that met the inclusion criteria were included. Data extraction was performed. Cox regression models were created to compare the success rate of restorations produced with different types of HVGIC. The results were reported as odds ratio (OR) and confidence intervals (CI). Kaplan Meyer analyses were performed to calculate the HVGIC restorations' probability of success.Results: Nine articles evaluating ChemFil Rock, ChemFlex, Equia Fil, Ketac Molar, or Fuji IX were included. Restorations with glass ionomer cements Fuji IX (OR = 3.51; CI = 1.96 - 6.28), Ketac Molar (OR = 4.01; CI = 2.40-6.68), and ChemFlex (OR = 4.20; CI = 1.01-17.66) had a significantly higher success rate than those with ChemFil Rock. EquiaFil achieved the second lowest efficacy, slightly higher than ChemFil Rock.Conclusion: Restorations with Fuji IX, Ketac Molar, and ChemFlex showed high success rates over the ART evaluation time.

Efetividade de mensagens eletrônicas nos telefones celulares na cooperação de pacientes ortodônticos no uso de elásticos, contenção e na presença às consultas: uma revisão sistemática e meta-análise / Effectiveness of electronic messages in mobile phones in the cooperation of orthodontic patients during the wearing of elastics and retainers, and in attendance to appointments: a systematic review and meta-analysis

Objetivo: Avaliar o efeito de mensagens por WhatsApp, mensagem de texto (SMS), ou aplicativos na cooperação dos pacientes ortodônticos para usar elásticos, contenção e para não faltar ou atrasar para as consultas. Métodos:Foram conduzidas buscas em cinco bases de dados eletrônicas, no OpenGrey e Google Scholar sem restrição de data/idioma de publicação. Seleção dos estudos, extração de dados e análise da qualidade metodológica dos artigos com a ferramenta Cochrane foram realizados. Resultados de meta-análises foram apresentados em razão das chances (RC) e intervalo de confiança (IC). Resultados: Oito estudos foram incluídos. Indivíduos que receberam mensagens por aplicativo apresentaram um número menor de comparecimentos falhos (p < 0,05). Indivíduos que receberam mensagens por WhatsApp obtiveram maior eficácia na correção da má oclusão classe II com elásticos e uma menor diminuição da distância intercaninos (p < 0,05) do que aqueles que não receberam mensagens. Para irregularidade dos incisivos, não houve diferença entre quem recebeu ou não recebeu mensagem de texto (p = 0,92). Entre indivíduos que recebiam mensagens por SMS, o número de comparecimentos à consulta foi maior que o número de não comparecimentos (RC = 15,48; IC = 1,04­230,24), além do maior uso de elásticos (p = 0,001). Não há diferença no comparecimento à consulta entre indivíduos que receberam uma mensagem prévia por SMS e quem recebeu ligação telefônica prévia (RC = 1,11; IC = 0,30 ­ 4,05), ou quem recebeu e-mail (p > 0,05). A qualidade metodológica variou de baixo a alto. Conclusão: Mensagens em celulares são eficientes na redução de faltas nas consultas, no número de comparecimentos falhos, no aumento do uso de elásticos e contenção.

Aim: To evaluate the effect of messages via WhatsApp, text message (SMS), or apps on the cooperation of orthodontic patients during the wearing of elastics and retainers as well as attendance and delay at appointments. Methods: Searches in five electronic databases, OpenGrey, and Google Scholar were performed without restrictions on publication date/language. Selection of the studies, data extraction, and methodological quality analysis of articles with the Cochrane tool were performed. Results of meta-analysis were provided in odds ratio (OR) and confidence intervals (CI). Results: Eight studies were included. Among those who received app messages, a lower number of appointment failures (delay) was observed (p < 0.05), and among those who received WhatsApp messages, a greater effectiveness of correction of class II malocclusion with elastics and a lower intercanine distance reduction (p < 0.05) were observed compared to those who did not receive messages. For incisor irregularity, there was no difference between individuals who received and those who did not receive a text message (p = 0.92). Among those receiving previous SMS messages, the number of appointment attendances was higher than the number of no-shows (OR = 15.48; CI = 1.04­230.24). Wearing of elastics was also higher (p = 0.001). No difference was found in appointment attendances between individuals who received previous SMS messages and individuals who received previous phone calls (OR = 1.11; CI = 0.30­4.05), or those who received e-mails (p > 0.05). The risk of bias varied from low to high. Conclusion: Messages in mobile phones are efficient in reducing consultation no-shows and failure in attendance, as well as in increasing the wearing of intermaxillary elastics and retainers.

Impacto do isolamento social pela pandemia da COVID-19 nas consultas odontopediátricas: uma revisão sistemática e meta-análise / Impact of social isolation caused by the COVID-19 pandemic on pediatric dentistry appointments: a systematic review and meta-analysis

Objetivo: Avaliar estudos que mostraram o impacto do isolamento social pela pandemia da COVID-19 nas consultas odontopediátricas. Métodos: Estudos originais que tenham mostrado o impacto do isolamento social nas consultas de crianças e adolescentes com um(a) odontopediatra foram incluídos. Buscas no Web ofScience, Scopus, Embase e PubMed foram realizadas. A seleção dos estudos foi feita por dois autores. O risco de viés foi avaliado com a escala Universidade de Adelaide. Resultados das meta-análises foram fornecidos em razão de chances (RC) e intervalo de confiança (IC). Resultados:Setecentas e noventa e quatro referências foram avaliadas e quatro estudos foram incluídos. A proporção de consultas realizadas em 2019 (antes da pandemia) para tratamento restaurador (RC = 22,65; IC = 20,57­24,93), extração de dentes (RC = 15,96; IC = 14,78­17,23) e tratamento endodôntico (RC = 9,21; IC = 7,72­10,98) foi significativamente maior que a proporção de consultas realizadas em 2020 (após o início da pandemia). A proporção de pais/responsáveis que não levariam seus(suas) filhos(as) à uma consulta com o odontopediatra foi significativamente maior entre indivíduos com mais medo durante a pandemia (escore 6 a 10) do que entre indivíduos com menos medo durante a pandemia (escore 0 a 5) (RC = 8,41; IC = 5,06­13,98). A proporção de pais/responsáveis que não levariam seus(suas) filhos(as) à uma consulta com o odontopediatra em regiões com mais de 100 casos de COVID-19 foi significativamente maior do que em regiões com até 100 casos (RC = 2,45; IC = 1,55­3,88). A avaliação do risco de viés variou de baixo a alto. Uma limitação dessa revisão foi o número restrito de estudos incluídos. Conclusão: O isolamento social pode ter contribuído para uma redução no número de consultas odontopediátricas devido à insegurança dos pais de levarem seus(suas) filhos(as) ao consultório odontológico. Esses resultados podem ser importantes para os clínicos e os organizadores de serviços de saúde.

Aim: To evaluate studies that showed the impact of social isolation caused by the COVID-19 pandemic on pediatric dentistry appointments. Methods: This work included original studies that have evaluated the impact of social isolation in children's and adolescents' appointments with a pediatric dentist. Searches were conducted in Web of Science, Scopus, Embase, and PubMed databases. Study selection was carried out by two authors. Risk of bias was assessed using the University of Adelaide scale. Results of meta-analyses were provided in odds ratio (OR) and confidence interval (CI). Results: Our study evaluated 794 references, of which four studies were included. The proportion of dental appointments performed in 2019 (before the pandemic) for restorative treatment (OR = 22.65; CI = 20.57­24.93), tooth extraction (OR = 15.96; CI = 14.78­17.23), and endodontic treatment (OR = 9.21; CI = 7.72­10.98) was significantly higher than the proportion of dental appointments performed in 2020 (after the onset of the pandemic). The proportion of parents/guardians who would not take their children to an appointment with a pediatric dentist was significantly higher among individuals who were more afrais during the pandemic (score 6 to 10) than among individuals who were less afraid during the pandemic (score 0 to 5) (OR = 8.41; CI = 5.06­13.98). The proportion of parents/guardians who would not take their children to an appointment with a pediatric dentist in regions with more than 100 cases of COVID-19 was significantly higher than in regions with up to 100 cases (OR = 2,45; CI = 1.55­3.88). Risk of bias assessment ranged from low to high. A limitation of this review was the restricted number of included studies. Conclusion: Social isolation caused a decline in the number of appointments with a pediatric dentist due to parents' insecurity about taking their children to the dental office. These results are important for both dental clinicians and healthcare decision-makers.

Information and Communications Technology in Dentistry: an informative and educational approach for patients with fixed orthodontic appliances

ABSTRACT Objective: To develop and make available, at no cost to the user, Information and Communications Technology (ICT) tools for Dentistry, providing dental information and advice geared toward patients undergoing orthodontic treatment with fixed appliances. Material and Methods: A Dentistry-based content that contemplated information and advice concerning orthodontic treatment with fixed appliances was elaborated. The materials, which included instructions on oral hygiene and treatment strategies when faced with possible complications, were evaluated and validated by specialists, whose assessments reached a 85% approval. From the validated content, products using four distinct ICT tools were formulated. Results: The following technological products were developed: a program for community radios, three blog posts, four educational and informative videos, and a smartphone application - using texts, as well as images and videos. These ICT tools, geared toward patients wearing fixed orthodontic appliances, were made available by internet at no cost to the user, and the number of accesses is already expressive. Conclusion: These technological-scientific tools, developed and provided freely to the population, can aid patients during their treatment with fixed orthodontic appliances, contributing to the dissemination of reliable information, and clarifying doubts that may arise during orthodontic therapy. These free ICT tools serve to facilitate access to scientific knowledge, thereby favoring social inclusion, bearing in mind that this educational and informative material was offered in a simple and accessible manner to the general population.

RESUMO Objetivos: Desenvolver e disponibilizar, gratuitamente, ferramentas de tecnologia da informação e comunicação (TIC) para a Odontologia, abordando informações e orientações direcionadas a pacientes em tratamento ortodôntico com aparelho fixo. Material e Métodos: Foi elaborado um conteúdo que contemplou informações e orientações concernentes ao tratamento ortodôntico com aparelho fixo. O material, que abrangeu instruções sobre higiene bucal e sobre abordagens diante de possíveis intercorrências, foi avaliado e validado por especialistas. A partir do conteúdo validado, foram elaborados produtos utilizando quatro ferramentas distintas de TIC. Resultados: Foram desenvolvidos os seguintes produtos tecnológicos: um programa para rádios comunitárias, três postagens para blog, quatro vídeos educacionais e informativos, e um aplicativo para smartphones, utilizando não apenas textos, mas também imagens e vídeos. Essas ferramentas de TIC direcionadas a pacientes fazendo uso de aparelho ortodôntico fixo foram disponibilizadas gratuitamente via internet, e já contam com expressivo número de acessos. Conclusões: As ferramentas técnico-científicas, desenvolvidas e fornecidas livremente à população, podem auxiliar pacientes durante o tratamento com aparelho ortodôntico fixo, contribuir para disseminar informações confiáveis e esclarecer dúvidas que surgem durante a terapia ortodôntica. Essas ferramentas gratuitas de TIC facilitam o acesso ao conhecimento científico e, consequentemente, favorecem a inserção social, tendo em vista que esse material educacional e informativo foi ofertado de maneira simples e acessível à população.

Incidence and mortality rates of lip, oral cavity, and pharynx cancers in Brazil: time-trend and age-period-cohort analysis from the last 30 years, Global Burden of Disease Study

Abstract INTRODUCTION: Cancers are the second main cause of morbidity worldwide, but robust information on lip, oral cavity, and pharynx cancers in Brazil is lacking. This study aimed to analyze the trends of incidence and mortality caused by lip, oral cavity, and pharynx cancers and age-period-cohort effects in the Brazilian population of 30 years of age and over, in the period of 1990 to 2019. METHODS: A time series study of the incidence and mortality rates for oral cavity and pharynx cancer ("Lip and oral cavity cancer", "Nasopharynx cancer", and "Other pharynx cancer") was conducted, with corrected data from the Global Burden of Disease Study (GBD) 2019. Age-standardized rates per 100,000 inhabitants, for the global population, were gathered according to the individuals' sex. The annual average percentage change (AAPC) was estimated, as was the age-period-cohort effects. RESULTS: The incidence and mortality rates were higher for men in the studied anatomical regions. The cancers tended to decrease for men, except for nasopharynx cancer, which increased in individuals of both sexes. Mortality tended to present a decline in most of the groups studied. For men and women, the age-period-cohort model presented a better adjustment for both incidence and mortality. CONCLUSIONS: Incidence and mortality caused by the main head and neck cancers showed a tendency to decline over the past 30 years in Brazil, except for nasopharynx cancer, which showed an increase in incidence and mortality in some segments of the population. Higher rates were found for lip and oral cavity cancers in men.