Biomimetic Mineralizing Agents Recover the Micro Tensile Bond Strength of Demineralized Dentin.

Biomimetic remineralization is an approach that mimics natural biomineralization, and improves adhesive procedures. The aim of this paper was to investigate the influence of Dentin Caries-like Lesions (DCLL)-Producing Model on microtensile bond strength (µTBS) of etch and rinse adhesive systems and investigate the effect of remineralizing agents such as Sodium Fluoride (NaF), MI Paste™ (MP) and Curodont™ Repair (CR) on caries-affected dentin (n = 6). Nine groups were established: (1) Sound dentin; (2) Demineralized dentin/Chemical DCLL: (3) Demineralized dentin/Biological DCLL; (4) Chemical/DCLL + NaF; (5) Chemical/DCLL + MP; (6) Chemical/DCLL + CR; (7) Biological/DCLL + NaF; (8) Biological/DCLL + MP; (9) Biological/DCLL + CR. Then all dentin blocks were subjected to a bonding procedure with Adper™ Single Bond 2 adhesive system/Filtek Z350XT 4 mm high block, following this they were immersed in deionized water/24 h and then sectioned with ≅ 1 mm² beams. The µTBS test was conducted at 1 mm/min/500 N loading. Failure sites were evaluated by SEM (scanning electron microscopy (150×). µTBS data were submitted to factorial ANOVA and Tukey's test (p < 0.05). The highest values were found when demineralized dentin was treated with MP and CR, regardless caries lesion depth (p < 0.05). There was a predominance of adhesive/mixed in the present study. It was concluded that the use of the artificial dentin caries production models produces differences in the µTBS. Additionally MP and CR remineralizing agents could enhance adhesive procedures even at different models of caries lesion.

Prevalência de má oclusão em escolares de 7 a 9 anos de idade do Polo 1 da Rede Municipal de Ensino em João Pessoa-PB / Prevalence of malocclusion in 7-9-years-old children from Pole 1 of municipal schools in João Pessoa-PB

Introdução: A má oclusão, definida como alteração do crescimento e do desenvolvimento que afeta a oclusão dentária, é considerada um problema de saúde pública, pois apresenta alta prevalência e interfere negativamente na qualidade de vida das pessoas. Objetivo: Avaliar a prevalência de más oclusões em escolares de 7 a 9 anos de idade do Pólo 1 da Rede Municipal de Ensino de João Pessoa-PB. Material e Método: Foi realizado um estudo transversal com 162 escolares, selecionados de forma probabilística, de ambos os gêneros. Dentre as características da oclusão, foram observados: relação molar de Angle, sobressaliência, sobremordida, mordida aberta anterior, mordida cruzada e apinhamento. Os dados foram coletados por examinador calibrado (Kappa = 0,93), organizados em programa SPSS 13.0 e submetidos à análise descritiva e ao teste Qui-quadrado, com nível de significância de 5%. Resultado: 89,5% dos escolares apresentaram algum tipo de má oclusão; 48,1% da amostra foi classificada como tendo relação molar de Classe I, 32,1% Classe II e 17,9% Classe III. O apinhamento foi a má oclusão mais frequente (67,3%), seguido da sobressaliência acentuada (48,8%), sobremordida acentuada (41,9%), mordida cruzada posterior (11,7%), mordida cruzada anterior (11,7%) e mordida aberta anterior (11,7%). A mordida cruzada posterior foi estatisticamente mais frequente no gênero masculino e a sobressaliência acentuada apresentou associação com a Classe II de Angle. Conclusão: A população em tela apresentou alta prevalência de alterações oclusais, o que indica a necessidade de intervenção precoce, seja com programas preventivos e educativos, seja com programas de assistência.

Introduction: Malocclusion, defined as change in growth and development that affects dental occlusion, is considered a public health problem, because of its high prevalence and negative impact on quality of life. Objective: Assess the prevalence of malocclusion in children 7-9 years old from Pole 1 of the municipal schools in João Pessoa-PB. Material and Method: A cross-sectional study was conducted with a probabilistic random sample of 162 schoolchildren of both genders. The following oclusal findings were observed: molar classes, overjet, overbite, anterior open bite, crossbite and crowding. Data were collected by a calibrated examiner (Kappa = 0.93), organized by the SPSS 13.0 and subjected to descriptive analysis and chi-square test, with a significance level of 5%. Result: 89.5% of schoolchildren had some type of malocclusion. 48.1% of the sample were classified as having Class I, 32.1% Class II and 17.9% Class III. The crowding was the most frequent malocclusion (67.3%), followed by increased overjet (48.8%), increased overbite (41.9%), posterior crossbite (11.7%), anterior crossbite (11.7%) and anterior open bite (11.7%). A posterior crossbite was statistically more frequent in males. Class II was associated with increased overjet. Conclusion: This population presented high prevalence of malocclusion, which indicates the need for early intervention, with preventive and educational programs or assistance.

Candidose bucal em paciente HIV positivo: relato de caso / Oral candidiasis in HIV- infected patient: report case

A candidose bucal é a infecção oportunista mais frequente no paciente HIV+ e representa um marcador da progressão da AIDS. O presente artigo tem como objetivo descrever um caso de candidose bucal recorrente em paciente HIV+. Desenvolvimento: Paciente, sexo masculino, 46 anos, HIV infectado compareceu ao Hospital Universitário Lauro Wanderley/UFPB, apresentando placas brancas que se desprendiam ao raspado, localizadas na mucosa jugal, labial e orofaringe e ainda fissura na comissura labial. O paciente referia dificuldade de deglutir, ardor bucal e na garganta, rouquidão e perda do paladar. O diagnóstico clínico foi candidose pseudomembranosa bucal e de orofaringe e queilite angular. Obteve-se diagnóstico definitivo, realizando-se exame micológico que mostrou presença de Candida albicans (CFU= 430). Prescreveu-se fluconazol 100mg 12/12h, durante uma semana. O paciente retorna com remissão do quadro clínico. No presente relato, são discutidos os fatores predisponentes, a relação com níveis de CD4+, as características clínicas, o diagnóstico e o tratamento da candidose bucal. Conclusão: É importante o exame clínico bucal e micológico para diagnóstico da candidose bucal. Ressalta-se a atuação do cirurgião-dentista no controle da saúde bucal e geral do paciente HIV+.

DOral candidiasis is the most frequent opportunistic fungical infection among human immunodeficiency virus (HIV)-infected patients, and it uses to represent a marker for AIDS' progression. This paper aims to describe a case of oral candidosis and oropharynx in a HIV+ patient. Development: Patient, male, 46 years old, HIV infected, attended the SIVIH/HULW showing white plaques that could be scraped off, located in the jugal, labial mucosa and oropharynx, as well as showing clefts in the labial commissures. He related difficulty swallowing, oral and throat burn, hoarseness and loss of taste. The clinical diagnosis was oral pseudomembranous candidosis, oropharynx and angular cheilitis. Definitive diagnosis has been obtained by performing mycological examination that showed the presence of Candida albicans (CFU= 430). Fluconazole 100 mg 12/12 h during one week has been prescribed. Patient returned showing total remission of clinical frame, with negative result for candida. In this case, predisposing factors, relation with CD4+ levels, clinical features, diagnosis and treatment for oral candidosis and oropharynx are discussed. Conclusion: Oral and mycological clinical examination are important for diagnosis of oral candidosis. The role of the dentist is emphasized in the control of oral and general health of the HIV+ patient.