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1.
Dental press j. orthod. (Impr.) ; 23(6): 64-72, Nov.-Dec. 2018. tab, graf
Article in English | LILACS | ID: biblio-975025

ABSTRACT

Abstract Objective: To assess the short-term effect of two in vitro erosive challenge protocols on the bond strength of metal orthodontic brackets on bovine enamel. Methods: Sixty bovine incisors were selected and randomly divided into six groups: AS7 (artificial saliva - 7 days, Control Group); CC7 (Coca-Cola™ - 7 days); LJ7 (lime juice - 7 days); AS30 (artificial saliva - 30 days, Control Group); CC30 (Coca-Cola™ - 30 days); LJ30 (lime juice - 30 days). Microhardness testing was performed prior to the erosive challenge to verify the standardization of samples. Immersion was performed 4x/day for five minutes, for either 7 or 30 days. After immersions were concluded, the brackets were bonded and shear bond strength was assessed after 48 hours. The Adhesive Remnant Index (ARI) was also assessed. Data were analyzed by two-way ANOVA, followed by Tukey's post-hoc and Student's t test for paired samples, and the Kruskal-Wallis non-parametric test (α = 5%). Results: The mean and standard deviation of microhardness testing of total samples were 281.89 ± 44.51 KHN. There was no statistically significant difference in shear bond strength for the time factor (7 or 30 days; F5.54= 0.105; p = 0.901). However, there was a statistically significant difference for the solution factor (F5.54= 6.671; p = 0.003). These differences occurred among solutions of Saliva x Coca-Cola™ (p = 0.003) and Coca-Cola™ x Lime Juice (p= 0.029). The assessment of the Adhesive Remnant Index showed no significant difference between groups. Conclusions: The immersion time used in the erosion protocols did not affect the bond strength of brackets to teeth. Coca-Cola™ induced significantly higher shear bond strength values than lime juice and artificial saliva. However, the short term effects of 7/30 days in this in vitro study may not be extrapolated for in vivo ones. Clinical studies should be conducted, substantiating the laboratory results.


Resumo Objetivo: avaliar o efeito de curto prazo de dois protocolos de desafio erosivo, in vitro, na resistência adesiva de braquetes ortodônticos metálicos em esmalte bovino. Métodos: Sessenta incisivos bovinos foram selecionados e divididos aleatoriamente em seis grupos: SA7 (saliva artificial - 7 dias, Grupo Controle); CC7 (Coca-Cola® - 7 dias); SL7 (suco de limão - 7 dias); SA30 (saliva artificial - 30 dias, Grupo Controle); CC30 (Coca-Cola® - 30 dias); SL30 (suco de limão - 30 dias). Foi realizado o teste de microdureza antes do desafio erosivo, para verificar a padronização das amostras. A imersão foi realizada quatro vezes ao dia, por cinco minutos, durante 7 ou 30 dias. Finalizadas as imersões, os braquetes foram colados e, após 48 horas, foi avaliada a resistência ao cisalhamento. O Índice de Adesivo Remanescente (IAR) também foi avaliado. Para análise dos dados, foram utilizados os testes ANOVA dois fatores, seguido do post-hoc de Tukey e teste t de Student para amostras pareadas, e o teste não-paramétrico de Kruskal-Wallis (α?#8197;= 5%). Resultados: a média e o desvio-padrão do teste de microdureza das amostras totais foi igual a 281,89 ± 44,51 KHN. Não houve diferença estatisticamente significativa na resistência ao cisalhamento para o fator tempo (7 ou 30 dias; F5,54= 0,105; p= 0,901). Contudo, houve diferença estatisticamente significativa para o fator solução (F5,54=6,671; p= 0,003). Essas diferenças ocorreram entre as soluções de Saliva x Coca-Cola® (p= 0,003) e Coca-Cola® x suco de limão (p= 0,029). Ao avaliar o Índice de Adesivo Remanescente, não foi possível verificar diferença significativa entre os grupos. Conclusões: o tempo de imersão utilizado nos protocolos de erosão não afetou a resistência de união dos braquetes aos dentes. A Coca-Cola® induziu valores de resistência ao cisalhamento significativamente mais altos do que o suco de limão e a saliva artificial. No entanto, os efeitos em curto prazo de 7 e 30 dias, nesse estudo in vitro, não podem ser extrapolados para os estudos in vivo. Estudos clínicos devem ser conduzidos, fundamentando os resultados laboratoriais.


Subject(s)
Animals , Beverages/adverse effects , Dental Bonding/methods , Orthodontic Brackets , Dental Enamel , Saliva, Artificial/chemistry , Surface Properties , Time Factors , Tooth Erosion/pathology , Materials Testing , Cattle , Resin Cements , Dental Alloys/chemistry , Shear Strength , Dental Stress Analysis/instrumentation , Fruit and Vegetable Juices/adverse effects , Hardness , Hydrogen-Ion Concentration , Incisor
2.
Rev. Assoc. Paul. Cir. Dent ; 70(2): 116-120, abr.-jun. 2016. tab, graf
Article in Portuguese | LILACS, BBO | ID: lil-797060

ABSTRACT

O objetivo deste estudo foi avaliar se a presença da artrite idiopática juvenil (AIJ) em crianças e adolescentes pode ser considerada como indicador de risco para a erosão dentária. Para tal, foram utilizadas oitenta crianças e adolescentes com diferentes tipos de AIJ e 23 pacientes saudáveis como controle. Os critérios de inclusão foram diagnóstico de AIJ e classificação do subtipo de acordo com os critérios da Liga Internacional das Associações de Reumatologia(ILAR). Os dados sobre variáveis nutricionais, fatores socioeconômicos, vômitos, ingestão de medicamentos, hábitos alimentares e orais foram coletados por meio de questionário estruturado.Todos os pacientes foram submetidos a medição do fluxo salivar e exame clínico usando o índice Exame Básico de Desgaste Erosivo (BEWE). Dezesseis pacientes, todos afetados pelo subtipo oligo articular de AIJ mostraram redução da quantidade de saliva estimulada; dois deles apresentaram erosão e relataram consumo diário de refrigerantes. Foi relatado vômitos (uma vez por dia) por nove pacientes devido à ingestão de metotrexato sem correlação com o subtipo de AIJ. Nenhum deles exibiu erosão. O indicador de risco para a erosão dentária foi o subtipo de AIJ (artrite oligo articular), não havendo correlação significativa da presença de erosão dentária com as variáveis nutricionais, ingestão de medicamentos, hábitos alimentares e orais.


The purpose of this study was evaluate the existence of prevalence and risk indicators of dental erosion in patients affected by juvenile idiopathic arthritis (JIA). Eighty patients (61 females and 19males) with different kinds of JIA and 23 healthy control ones aging from 3 to 19 years were included in the study. The inclusion criteria were diagnosis of JIA and subtype classification according to the International League of Associations for Rheumatology (ILAR) criteria. Data on nutrition al variables, socioeconomic factors, vomiting, drug intake and dietary and oral habits were collected using a questionnaire. All patients underwent saliva measurement and clinical examination using Basic Erosive Wear Examination (BEWE) Index. Sixteen patients, all affected by the oligo articular subtype of JIA showed a reduced quantity of stimulated saliva; two of them showed erosion andre ported a daily soft drink intake. Vomiting (once a day) was reported by nine patients and was dueto methotrexate intake with no correlation with JIR subtype. None of them exhibited erosion. Risk indicator for wear was JIA subtype (oligo articular arthritis). There was no significant correlation of the presence of dental erosion with nutritional variables, drug intake or dietary and oral habits.


Subject(s)
Humans , Male , Female , Child , Adolescent , Young Adult , Arthritis, Juvenile/complications , Arthritis, Juvenile/diagnosis , Arthritis, Juvenile/pathology , Tooth Erosion/complications , Tooth Erosion/diagnosis , Tooth Erosion/pathology , Saliva/metabolism , Saliva
3.
Bol. Asoc. Argent. Odontol. Niños ; 43(1): 2-6, abr.-ago. 2014. tab, graf, ilus
Article in Spanish | LILACS | ID: lil-761836

ABSTRACT

La pérdida de tejido dentario por erosión es una lesión que se ha incrementado en los últimos años. Los datos mundiales de prevalencia muestran valores de hasta el 35 por ciento, según los indicadores utilizados y población estudiada. Objetivo: estimar la prevalencia de erosión dental en escolares de la CABA y establecer asociación con factores relacionados con estilo de vida. Materiales y métodos: se realizó un estudio observacional, descriptivo, en 189 niños que concurren a escuelas de la CABA, edad (x=8,48 +- 2,3 años) previo consentimiento informado. Los criterios de exclusión fueron: alumnos portadores de ortodoncia, con riesgo médico incrementado o con defectos estructurales del esmalte. Los padres de la población seleccionada respondieron un cuestionario con encuestador que incluía información acerca del estilo de vida. Se diagnosticó erosión mediante el registro de los índices de Smith y Knight (SyK) y de la Encuesta Nacional de Salud Oral del Reino Unido (CDHS). Se realizó el análisis estadístico mediante medidas de tendencia central y dispersión chi-cuadrado, coeficiente de correlación de Spearman y Odds Ratio. Resultados: según el índice de CDHS, 65,6 por ciento de los niños presentó pérdida erosiva y 91,5 por ciento acorde a SyK. Se encontraron diferencias estadísticamente significativas entre el consumo de gaseosas regulares e índice de SyK (x2 de 4,3 p=0,036). El OR para el consumo de gaseosa e índice de SyK fue de 2,9 (IC=1,03 - 8,49). No se encontró asociación entre erosión y el resto de las bebidas analizadas. Conclusiones: la estimación de la prevalencia fue elevada con los indicadores empleados y se encontró asociación positiva entre erosión (SyK) y el consumo de gaseosas...


Subject(s)
Humans , Male , Female , Child , Tooth Erosion/etiology , Tooth Erosion/pathology , Tooth Loss/diagnosis , Tooth Loss/epidemiology , Tooth Loss/etiology , Argentina , Carbonated Beverages/adverse effects , Chi-Square Distribution , Cross-Sectional Studies , Epidemiology, Descriptive , Dental Enamel/injuries , Health Surveys , School Dentistry , Data Interpretation, Statistical
4.
São Paulo; s.n; 2013. 119 p. ilus, tab. (BR).
Thesis in Portuguese | LILACS, BBO | ID: lil-715008

ABSTRACT

Objetivo. Este estudo analisou a interação entre fatores sócio-demográficos, ocupacionais e em relação ao estilo de vida associados à saúde bucal dos trabalhadores encaminhados ao CEREST-Guarulhos Método. Este foi um estudo transversal e o cálculo do tamanho da amostra resultou na análise de 100 trabalhadores. Coletaram-se as informações sócio-demográficas, ocupacionais e em relação ao estilo de vida dos trabalhadores com questionários validados para uso no Brasil, e estes foram: o questionário OHIP14 (autopercepção da saúde bucal), o questionário da tolerância de Fagestron (dependência de nicotina), o questionário AUDIT (consumo de álcool), a escala de estresse no trabalho (EET), a prática de atividade física (PAF) e o índice da capacidade para o trabalho (ICT); também foi realizado exame clínico odontológico respeitados os critérios da OMS para verificação da condição de saúde bucal dos trabalhadores. As análises estatísticas utilizadas para associação entre as variáveis foram teste t de student, Mann-Whitney, ANOVA e Kruskall-Wallis. Para análise conjunta dos fatores associados foram realizadas regressões lineares e logísticas múltiplas Resultados. O índice CPO-D variou significativamente conforme avanço dos grupos etários analisados, sendo melhor explicado pelas perdas dentárias (P<0,0001). As LCNCs (lesões cervicais não cariosas) e as condições periodontais (CPI e PIP) variaram significativamente segundo os grupos etários...


Objectives. This study intended to collaborate with relations of social and demographic conditions, occupational factors and lifestyle with oral health of workers in a municipal reference centre of workers health, located in Guarulhos, SP-Brazil. Methods- It was a cross-sectional study and the sample consisted of 100 workers. They answered the questionaries: Work Ability Index (WAI), Baecke Questionaire, Fagerstron Tolerance Questionaire, Audit Test, Work Stress Scale (WSS) and Oral Health Impact Profile-short form (OHIP14). After that, workers were conducted to a clinical dental exam, in respect of WHO parameters. Statistic analyses were performed using student t test, Mann-whitney, analyse of variance (ANOVA), Kruskal-Wallis, multiple regression analysis model and multiple unconditioned logistic regression analysis. Results- There was a significant progressive reduce in DMFT index, associated with increase of age groups, and the missing (M) teeth was responsible for this impact (P<0,0001). The NCCLs (Non carious cervical lesions) and the periodontal conditions including the periodontal attachment loss were significant associated with age groups. Scores of OHIP14, Fagestron,Audit test, Baecke questionnaire, WSS and WAI weren´t associated with age groups. The presence of NCCLs, by unconditional logistic regression, was better explained by age groups OR=4,27(IC95% 1,89-9,71) and occupational exposure to acid mists and chemical products OR=4,14 (IC95% 1,15- 14,96). Missing teeth were better explained by age groups (p<0,0001) and fagestron tolerance (p=0,007). The ages of smoking habits were associated with NCCLs (p=0,044), and independent of other variables, by multiple linear regression. Conclusions- Missing teeh and NCCLs were associated with age groups and smoking habits. The NCCLs...


Subject(s)
Humans , Accidents, Occupational , Tooth Erosion/pathology , Occupational Dentistry , Oral Health
5.
Rev. méd. Chile ; 140(7): 915-918, jul. 2012. ilus
Article in English | LILACS | ID: lil-656365

ABSTRACT

Patients with gastroesophageal reflux may have extra-esophageal manifestations. We report a 46 years old ex-smoker woman presenting with a sensation of burning mouth, xerostomia and glossitis. The patient had a history of heartburn, dysphonia and cough. Mouth examination showed a bad hygiene and abundant accumulation of plaque. Esophageal pH measurement was abnormal. Laryngoscopy showed a posterior laryngeal inflammation and mucous secretion. With these data, a diagnosis of gastroesophageal reflux was reached.


Los pacientes con reflujo gastroesofágico pueden tener manifestaciones extra esofágicas. Presentamos una mujer ex fumadora de 46 años que se presentó con sensación de quemazón en la boca, xerostomia y glositis. La paciente tenía además una historia de pirosis retroesternal, disfonía y tos. El examen bucal mostró una mala higiene bucal con abundante acumulación de sarro. Una medición de pH esofágico fue anormal. La laringoscopia mostró una inflamación laríngea posterior y secreción mucosa. Con estos antecedentes se llegó al diagnóstico de reflujo gastroesofágico.


Subject(s)
Female , Humans , Middle Aged , Gastroesophageal Reflux/complications , Mouth Mucosa/pathology , Tooth Erosion/pathology , Atrophy , Esophageal pH Monitoring , Gastroesophageal Reflux/pathology , Tooth Erosion/etiology
6.
Article in Portuguese | LILACS, BBO | ID: lil-655326

ABSTRACT

Introdução: A erosão dental é definida como a perda progressiva e irreversível de tecido dental duro por um processo químico que não envolve a ação bacteriana. A sua etiologia apresenta caráter multifatorial e está relacionada à fonte de ácidos de origem extrínseca ou intrínseca. Dentre os fatores de origem intrínseca, esta condição tem sido relacionada à presença de refluxo gastroesofágico, principalmente em crianças. O refluxo gastroesofágico refere-se ao fluxo retrógrado, repetido e involuntário do conteúdo gástrico para o esôfago, que pode consistir de gás (eructação) ou fluido (regurgitação).Objetivo: Este trabalho discutiu, por meio de uma revisão de literatura, conhecimentos sobre a etiopatogenia e o diagnóstico do refluxo gastroesofágico e as evidências científicas acerca de sua associação com a erosão dental na infância. Foram apresentadas também algumas estratégias para a prevenção e o controle dessas lesões. Conclusão: O controle da erosão pela doença do refluxo gastroesofágico deve priorizar a eliminação ou a redução do contato do suco gástrico com a estrutura dental, por meio do tratamento da patologia de base; porém, durante o manejo do refluxo, o profissional deve estar atento à necessidade de prescrever ou adotar estratégias que minimizem o desgaste dental, como bochechar com solução aquosa de bicarbonato e adiar a escovação imediatamente após os episódios de regurgitação ou de êmese, evitar o consumo frequente de bebidas e de alimentos ácidos e otimizar a remineralização do esmalte ou da dentina por meio da aplicação de produtos fluoretados


Introduction: Dental erosion is defined as the progressive and irreversible loss of hard dental tissue by a chemical process that does not involves bacteria. Its etiology has a multifatorial nature and is related to acids of extrinsic or intrinsic origin. Among the intrinsic factors, this condition has been associated with the presence of gastroesophageal reflux, especially in children. Gastroesophageal reflux refers to the repeated and involuntary retrograde flow of the gastric content to esophagus in the form of gas (eructation) or fluid (regurgitation).Objective: This literature review addressed the knowledge of the etiopathogenesis and diagnosis of gastroesophageal reflux and the scientific evidence about its association with dental erosion during childhood. Some strategies for the prevention and control of these lesions were also presented. Conclusion: The control of dental erosion caused by gastroesophageal reflux disease should focus on eliminating or reducing the contact of gastric juice with the dental structures by treating the causative pathology. However, while dealing with the gastroesophageal reflux, the dentist should identify the need of prescribing and adopting strategies that minimize dental wear, such as, using oral rinses with a bicarbonate aqueous solution; delaying toothbrushing immediately after regurgitation or emesis episodes; avoiding frequent consumption of beverages and acid foods; and optimizing enamel/dentin remineralization by the application of fluoridated products


Subject(s)
Child , Tooth Wear/diagnosis , Diagnosis, Oral , Tooth Erosion/pathology , Tooth Erosion/prevention & control , Esophagitis/prevention & control , Gastroesophageal Reflux/complications , Gastroesophageal Reflux/diagnosis
7.
Braz. dent. j ; 21(4): 332-336, 2010. tab
Article in English | LILACS | ID: lil-562095

ABSTRACT

This study ascertained whether under dental erosion models that closely mimics the real-life situation enamel and root dentin from bovine origin would be reliable substitutes for human counterparts. Through a 2x2 crossover design, in a first trial, 14 volunteers wore a palatal device containing slabs of bovine and human enamel. Half of the participants ingested (4x daily, for 10 days) orange juice first, crossing over to mineral water, while the remainder received the reverse sequence. In a second trial, volunteers wore devices with slabs of bovine and human root dentin. Except for the duration of each intraoral phase, which lasted 2 rather 10 days, the experiment with root dentin run exactly as for enamel. Dental substrates were analyzed for surface microhardness. Two-way ANOVAs (α=0.05) indicated no difference between the microhardness values recorded for human and bovine enamel (p=0.1350), but bovine root dentin had lower microhardness compared to its human counterpart (p=0.0432). While bovine enamel can reliably substitute its human counterpart in in situ dental erosion models, bovine root dentin does not seem to be a viable alternative to the corresponding human tissue.


Este estudo visou avaliar, sob um modelo de erosão dental que se aproxima da realidade clínica, se o esmalte e a dentina radicular bovinos seriam substitutos viáveis aos correspondentes substratos de origem humana. De acordo com um delineamento crossover 2x2, 14 voluntários utilizaram dispositivos palatinos contendo fragmentos de esmalte humano e bovino. Metade dos participantes ingeriu suco de laranja (4x/dia, por 10 dias) e, a seguir, alternou para a ingestão de água mineral, enquanto os demais voluntários receberam a seqüência reversa. Em um segundo experimento, os sujeitos da pesquisa fizeram uso do dispositivo palatino contendo fragmentos de dentina radicular bovina e humana. Exceto pela duração de cada uma das duas fases experimentais (2 ao invés de 10 dias), utilizou-se o mesmo protocolo empregado no estudo em que se comparou o esmalte. Os substratos dentais foram avaliados quanto a sua microdureza superficial. ANOVAs a dois critérios (α=0,05) não indicaram diferença entre os valores de microdureza observados para o esmalte humano e bovino (p=0,1350), porém a dentina radicular apresentou microdureza inferior à humana (p=0,0432). Enquanto o esmalte bovino é um substituto fidedigno do substrato humano em modelos in situ de erosão dental, a dentina radicular bovina não parece ser uma alternativa viável ao tecido humano correspondente.


Subject(s)
Adult , Animals , Cattle , Female , Humans , Male , Young Adult , Disease Models, Animal , Dental Enamel/pathology , Dental Research/methods , Dentin/pathology , Tooth Erosion/physiopathology , Analysis of Variance , Cross-Over Studies , Hardness , Tooth, Artificial , Tooth Erosion/pathology , Young Adult
8.
Braz. dent. j ; 21(4): 337-345, 2010. ilus, tab
Article in English | LILACS | ID: lil-562096

ABSTRACT

This study evaluated the influence of a cola-type soft drink and a soy-based orange juice on the surface and subsurface erosion of primary enamel, as a function of the exposure time. Seventy-five primary incisors were divided for microhardness test (n=45) or scanning electron microscopy (SEM) analysis (n=30). The specimens were randomly assigned to 3 groups: 1 - artificial saliva (control); 2 - cola-type soft drink; and 3 - soy-based orange juice. Immersion cycles in the beverages were undertaken under agitation for 5 min, 3 times a day, during 60 days. Surface microhardness was measured at 7, 15, 30, 45 and 60 days. After 60 days, specimens were bisected and subsurface microhardness was measured at 30, 60, 90, 120, 150 and 200 µm from the surface exposed. Data were analyzed by ANOVA and Tukey’s test (a=0.05). Groups 2 and 3 presented similar decrease of surface microhardness. Regarding subsurface microhardness, group 2 presented the lowest values. SEM images revealed that after 60 days the surfaces clearly exhibited structural loss, unlike those immersed in artificial saliva. It may be concluded that erosion of the surfaces exposed to the cola-type soft drink was more accentuated and directly proportional to the exposure time.


Este estudo avaliou a influência de um refrigerante a base de cola e um suco de laranja a base de soja na erosão da superfície e subsuperfície do esmalte do dente decíduo, em função do tempo de exposição. Setenta e cinco incisivos decíduos foram divididos para o teste de microdureza (n=45) ou para a análise em microscópio eletrônico de varredura (MEV) (n=30). Os espécimes foram alocados aleatoriamente em 3 grupos: I - saliva artificial (controle); II - refrigerante a base de cola; e III - suco de laranja a base de soja. Ciclos de imersão nas bebidas foram realizados sob agitação durante 5 min, 3 vezes ao dia, durante 60 dias. A microdureza superficial foi mensurada aos 7, 15, 30, 45 e 60 dias. Após 60 dias, os espécimes foram seccionados e a microdureza subsuperficial foi mensurada aos 30, 60, 90, 120, 150 e 200 μm. Os dados foram analisados pelos testes ANOVA e Tukey (α=5 por cento). Os grupos II e III apresentam uma diminuição similar da microdureza superficial. O grupo II apresentou menores valores de microdureza subsuperficial. As imagens de MEV revelaram que após 60 dias as superficies mostraram perdas de estruturas claramentes identificadas, diferentemente das superfícies imersas em saliva artificial. Pode-se concluir que a erosão das superficies expostas ao refrigerante a base de cola foi mais acentuada e diretamente proporcional ao tempo de exposição à bebida.


Subject(s)
Humans , Acids/adverse effects , Beverages/adverse effects , Dental Enamel/pathology , Tooth, Deciduous , Tooth Erosion/etiology , Dental Enamel/ultrastructure , Hardness , Hydrogen-Ion Concentration , Time Factors , Tooth Erosion/pathology
10.
Braz. oral res ; 22(2): 132-138, 2008. ilus
Article in English | LILACS | ID: lil-485952

ABSTRACT

This in situ study investigated, using scanning electron microscopy, the effect of stimulated saliva on the enamel surface of bovine and human substrates submitted to erosion followed by brushing abrasion immediately or after one hour. During 2 experimental 7-day crossover phases, 9 previously selected volunteers wore intraoral palatal devices, with 12 enamel specimens (6 human and 6 bovine). In the first phase, the volunteers immersed the device for 5 minutes in 150 ml of a cola drink, 4 times a day (8h00, 12h00, 16h00 and 20h00). Immediately after the immersions, no treatment was performed in 4 specimens (ERO), 4 other specimens were immediately brushed (0 min) using a fluoride dentifrice and the device was replaced into the mouth. After 60 min, the other 4 specimens were brushed. In the second phase, the procedures were repeated but, after the immersions, the volunteers stimulated the salivary flow rate by chewing a sugar-free gum for 30 min. Enamel superficial alterations of all specimens were then evaluated using a scanning electron microscope. Enamel prism core dissolution was seen on the surfaces submitted to erosion, while on those submitted to erosion and to abrasion (both at 0 and 60 min) a more homogeneous enamel surface was observed, probably due to the removal of the altered superficial prism layer. For all the other variables - enamel substrate and salivary stimulation -, the microscopic pattern of the enamel specimens was similar.


Subject(s)
Adult , Animals , Cattle , Female , Humans , Male , Young Adult , Dental Enamel/ultrastructure , Saliva/chemistry , Tooth Abrasion/pathology , Tooth Erosion/pathology , Toothbrushing/adverse effects , Beverages/adverse effects , Chewing Gum , Carbonated Beverages/adverse effects , Dental Enamel Solubility , Dental Caries/prevention & control , Dental Enamel/drug effects , Food , Hydrogen-Ion Concentration , Microscopy, Electron, Scanning , Surface Properties , Saliva/physiology , Tooth Remineralization , Tooth Abrasion/etiology , Tooth Erosion/etiology , Young Adult
11.
Braz. oral res ; 22(2): 176-183, 2008. ilus, graf, tab
Article in English | LILACS | ID: lil-485959

ABSTRACT

The patient's diet has been considered an important etiological factor of dentin hypersensitivity. The frequent ingestion of acidic substances can promote the loss of dental structure or remove the smear layer. The purpose of this study was to evaluate the degree of smear layer removal and dentinal tubules exposure by different natural orange juices. Extracted human teeth were submitted to manual scaling in order to develop the smear layer. Seventy dentin samples were obtained and distributed into the following groups: Control, lime orange, lime, valência orange, navel orange, mandarin, and tangerine. Each group included 2 methods of application: Topical and topical + friction. After preparation for SEM analysis, photomicrographs were assessed by a blind calibrated examiner using an index system. The Kruskal-Wallis test indicated a significant influence of the orange juices on smear layer removal. Significant difference was observed between navel orange, valência orange, mandarin and the control group (p < 0.05). These orange juices resulted in greater removal of the smear layer and greater opening of dentinal tubules. The comparison between the application methods for each group using the Mann-Whitney test showed that friction increased smear layer removal significantly only for lime orange and lime. The data suggest that certain natural orange juices are more effective in terms of smear layer removal and dentinal tubules exposure than others.


Subject(s)
Humans , Beverages/adverse effects , Citric Acid/pharmacology , Citrus/chemistry , Dentin Sensitivity/chemically induced , Dentin/drug effects , Fruit/chemistry , Smear Layer , Analysis of Variance , Beverages/analysis , Dental Pulp Cavity/drug effects , Dentin/ultrastructure , Microscopy, Electron, Scanning , Photomicrography , Statistics, Nonparametric , Tooth Erosion/etiology , Tooth Erosion/pathology
12.
Rev. Asoc. Odontol. Argent ; 95(3): 235-242, jun.-jul. 2007. ilus
Article in Spanish | LILACS | ID: lil-475023

ABSTRACT

Se denomina abfracción a la lesión en forma de cuña en el límite amelocementario (LAC) causada por fuerzas oclusales excéntricas que llevan a la flexión dental provocando la ruptura de prismas de esmalte, cemento y dentina. Los objetivos de este trabajo son: 1) comprender los mecanismos que generan la abfracción, su etiología, desarrollo y patología generada; 2) cuáles trabajos de investigación fundamentan la etiopatogenia de estas lesiones; 3) describir las características clínica; 4) valorar la abfracción y su importancia en el futuro como lesión en las próximas generaciones; 5) establecer las situaciones en que estas lesiones cervicales deben ser restauradas.


Subject(s)
Humans , Tooth Abrasion/etiology , Tooth Abrasion/pathology , Tooth Cervix/injuries , Tooth Erosion/etiology , Tooth Erosion/pathology , Tooth Abrasion/therapy , Crowns/adverse effects , Tooth Erosion/therapy , Stress, Psychological/physiopathology , Dental Occlusion, Traumatic/physiopathology
13.
Pesqui. bras. odontopediatria clín. integr ; 5(3): 223-228, set.-dez. 2005. tab
Article in Portuguese | LILACS, BBO | ID: biblio-872731

ABSTRACT

Objetivo: Avaliar os valores de pH e viscosidade apresentadospor soluções fluoretadas para bochechos disponíveiscomercialmente na cidade de João Pessoa-PB. Método:Constituíram a amostra os produtos Cepacol«, CepacolJúnior«, Fluomint«, Johnson & Johnson«, Malvatricin«, Oral-B«, Plax«, Sanifill« e Sorriso Fresh«. Utilizando-se osaparelhos pHmêtro digital e viscosímetro, com spidle L1 erotação de 220 rpm, puderam ser realizadas as medições dosvalores de pH e de viscosidade de cada produto. Resultados:Analisando-se os dados descritivamente, verificou-se que osvalores de pH variaram entre 5,36 a 7,44. A viscosidadeapresentou uma variação compreendida no intervalo de 4,00 a11,3 mPa.s. Dos 66,7 porcento produtos ácidos que compuseram aamostra apenas o Oral-B« apresentou pH abaixo de 5,5, valorconsiderado crítico para dissolução do esmalte. Além do menorvalor para o pH, o produto Oral-B« apresentou também omenor valor para a viscosidade (4 mPa.s). Conclusão: Dianteda metodologia utilizada e dos resultados obtidos, conclui-seque há uma expressiva variação do pH e da viscosidade dosenxaguatórios bucais analisados


Subject(s)
Mouthwashes/analysis , Mouthwashes/therapeutic use , Tooth Erosion/pathology , Fluorides/therapeutic use , Hydrogen-Ion Concentration , Dental Caries/prevention & control , In Vitro Techniques
14.
Rev. Asoc. Odontol. Argent ; 89(5): 514-526, sept.-oct. 2001. ilus
Article in Spanish | LILACS | ID: lil-299381

ABSTRACT

El objetivo de este trabajo consiste en describir las distintas lesiones cervicales no cariosas, la abrasión, la erosión y la abfracción. Se desarrollarán en detalle: su etiología, localización y características clínicas. Siendo la abfracción considerada la más asociada a la hipersensibilidad, se plantearán diferentes formas de tratamiento de la misma. Se mencionarán los diferentes procedimientos a realizar para su prevención y los materiales a utilizar para su restauración


Subject(s)
Tooth Abrasion/etiology , Tooth Abrasion/therapy , Tooth Erosion/etiology , Tooth Erosion/therapy , Tooth Cervix , Tooth Abrasion/pathology , Beverages , Dental Scaling , Dentifrices/adverse effects , Dentures , Diet , Tooth Erosion/chemically induced , Tooth Erosion/pathology , Tooth Resorption/complications , Toothbrushing
15.
Medical Journal of Cairo University [The]. 1997; 65 (Supp. 2): 115-121
in English | IMEMR | ID: emr-45827

ABSTRACT

Gastroesophageal reflux [GER] has been implicated in many extraesophageal problems as asthma, ear, nose, throat and laryngeal diseases. This study has been done to determine, if there is a relation between GER and idiopathic dental erosion. Patients selected for the study were divided into two groups: The dental group, which included ten patients with idiopathic dental erosion studied for the presence of GER and the gastroenterology group, which included 30 patients presenting by GER symptoms and examined for the presence of idiopathic dental erosion. All patients were subjected to questionnaire about GER symptoms and secondary causes of dental erosion, dental examination, esophagoscopy with esophageal biopsy and histopathology. Six of ten patients in the dental group were found to have GER of variable degrees and 8 of 22 patients with GER were found to have idiopathic dental erosion. In conclusion, dental erosion is common among GER patients and GER is an important factor in causing dental erosion


Subject(s)
Humans , Male , Female , Gastroesophageal Reflux/pathology , Tooth Erosion/etiology , Tooth Erosion/pathology , Esophagus/anatomy & histology
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