The results of this study suggest that nightguard (home) bleaching with 10% carbamide peroxide for 2 h/d for 21 days significantly affects resin-dentin bond strengths when dentin is exposed to bleaching material. CLINICAL SIGNIFICANCE The findings of this novel pilot study imply that dentin bonding, such as to exposed root surfaces and cervical areas of the teeth, should not be performed immediately after bleaching with 10% carbamide peroxide.
The objective was to evaluate the color stability of ceramic veneers luted with resin cements and pre-heated composite resins (60oC) for 12 months, and determine the degree of conversion (DC) of the luting agents. Two resin cements (AllCem Veneer, light-cured (LRC) and AllCem, dual-cured (DRC)] and three composite resins [Z100 (MNCR-minifilled), Herculite Classic (MHCR-micro-hybrid) and Durafill (MCCR-microfilled)] were used for cementing 0.8-mm-thick lithium-silicate glass-ceramic laminates (Suprinity, shade B2-HT, Vita) on bovine enamel (n=10). The specimens were stored at 37oC in distilled water. CIELab parameters were determined at 24h after luting (baseline), 7, 30, 90, 180 days and 12 months. Three specimens were prepared for DC evaluation, performed by micro-Raman spectroscopy. Data were analyzed by ANOVA and Tukey’s test (a=5%). For ΔEab and ΔE00, there were significant differences for luting material (p<0.001), time (p<0.001), and double interaction (p<0.001). The groups cemented with MHCR (1 year), MCCR (90 days and 1 year) and MCCR-PH (1 year) were the ones with ΔE values greater than the acceptability threshold. All other groups maintained their ΔE lower than the acceptability threshold after 1 year in distilled water. Regarding DC, there were no significant differences (p=0.127) among the materials. Non-significant negative correlations were observed between the mean ΔEab and DC (R=-0.65) and ΔE00 and DC (R=-0.64). A significant positive correlation was observed mean ΔEab and ΔE00 (R=0.99). It was concluded that the different luting agents influenced the final color of the restorations. The heating of the composite resins did not affect their DC.
Após a publicação das DCN os cursos de Odontologia necessitaram se adaptar em suas matrizes curriculares. Esta adaptação envolve não somente uma alteração curricular, mas também incorpora uma novafilosofia pedagógica que procura aproximar os preceitos contidos nas DCN com a prática do dia a dia do ensino nas clínicas integradas dos cursos de Odontologia.A proposta deste trabalho foi analisar a produtividade do aluno de graduação de Odontologia da UNIVILLE nas disciplinas de atividades clínicas, ao longo dos três anos de graduação em cinco (5) diferentes especialidades odontológicas (periodontia, dentística, endodontia, prótese e cirurgia). Foi avaliada a produtividade de oito (8) alunos egressos, quantificando-se sua produção durante os três (3) anos dadisciplina de atividades clínicas, 3º, 4º e 5º anos, especificamente clínicas de baixa, média e alta complexidade. A análise dos dados demonstrou: em endodontia, uma produção média de 4,1 tratamentosendodônticos por aluno; em prótese, uma média de 1,6 próteses fixas unitárias e 1,5 próteses totais por aluno; e, em dentística, uma média de 28 procedimentos restauradores diretos. Com base nos resultados deste modelo de avaliação foi possível concluir que o desenvolvimento de atividades clínicas integradas e por níveis de complexidade permite que o egresso de odontologia realize um aprendizado pedagógicoefetivo, com o acompanhamento do paciente em todas as suas fases de diagnóstico, planejamento e conclusão do tratamento. No entanto a pesquisa demonstra que este egresso conclui sua formação sem a realização de determinados procedimentos técnicos específicos às especialidades odontológicas pesquisadas.
ABSTRACT:The aim of this study was to assess the relationship between glycemic control of type 1 diabetic (DM1) patients and hyposalivation and xerostomia. This observational transversal study used a quantitative approach with a sample of 25 DM1 patients enrolled at the Diabetes Association of Joinville (ADIJO) in 2008. Variables assessed were sialometry through stimulated salivary flow, complaints of xerostomia, and testing for glycemic control: fasting capillary glycemia (FCG) and glycated hemoglobin (HbA1c). The Mann-Whitney U test, chi-square test, and Fisher's exact test were used to verify a possible association among the variables. Most subjects (64%; 16/25) showed concomitant hyposalivation and xerostomia. No significant statistical difference between glycemic control (FCG and HbA1c), hyposalivation, and xerostomia (p=0.54) was found. A high prevalence of hyposalivation and xerostomia was found to be more closely related to higher FCG values at the moment of blood testing than to higher values of HbA1c.
A evolução dos materiais restauradores e a redução em tamanho dos preparos cavitários não vem sendo acompanhadas por mudanças no ensino da Dentística Restauradora. Materiais adesivos e a utilização do flúor fazem com que os preparos cavitários sejam cada vez menos invasivos e mais conservadores. Este artigo tem por objetivo propor uma nova metodologia pedagógica para o início do ensino da Dentística Restauradora. Através desta prática os alunos poderão adquirir um maior controle manual com a alta rotação evitando o desgaste desnecessário e preservando o elemento dental.
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