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1.
J Contemp Dent Pract ; 16(3): 167-71, 2015 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-26057912

RESUMO

The aim of this study was evaluate the dental enamel after whitening treatment with Opalescence Boost PF™ 38%, correlating the structural alterations in the surface of the enamel with its respective pH and verify if whitened teeth submitted to different finishing and polishing techniques show similar surface texture to healthy teeth (control group). Sixty premolars were divided in 6 groups (n = 10), which had been immersed in artificial saliva during all the experiment. Protocol whitening was performed according to the manufacturer recommendations, and then the specimens were submitted to different polishing technique with Sof-Lex Pop On™ disks, Flex Diamond™ felt disks using two different micrometric polishing pastes (Enamelize™ and Diamond Polish™) and two nanometric polishing pastes (Lummina-E Diamond and Lummina-E Alumina), according to the groups. Representative specimens were analyzed in scanning electronic microscopy (SEM). Whitening gel used in this experiment had modified the morphologic aspect of the enamel surface. It was found that two nanometric polishing pastes (G5 and G6) promoted a less rough surface compared to control group even after the whitening process.


Assuntos
Esmalte Dentário/ultraestrutura , Profilaxia Dentária/métodos , Peróxido de Hidrogênio/uso terapêutico , Clareadores Dentários/uso terapêutico , Óxido de Alumínio/química , Diamante/química , Humanos , Concentração de Íons de Hidrogênio , Teste de Materiais , Microscopia Eletrônica de Varredura , Nanopartículas/química , Distribuição Aleatória , Saliva Artificial/química , Clareamento Dental/métodos
2.
Int J Periodontics Restorative Dent ; 32(2): e68-74, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22292155

RESUMO

This study evaluated factors that may influence the presence or absence of interproximal papillae. Clinical evaluation consisted of visual determination, and quantitative analyses were made using millimeter grids on radiographs. Patients (n = 45) were divided into three groups according to age. Data were analyzed using the chi-square test followed by the Student t test (α = .05). The distance from the contact point to the bone crest had significant influence on papilla presence in both anterior and posterior sites (P < .05), whereas the width between roots of adjacent teeth did not. The papilla was missing more frequently in anterior sites. The presence of papillae was not age-dependent.


Assuntos
Gengiva/patologia , Adulto , Fatores Etários , Processo Alveolar/diagnóstico por imagem , Dente Pré-Molar/diagnóstico por imagem , Dente Pré-Molar/patologia , Cefalometria , Dente Canino/diagnóstico por imagem , Dente Canino/patologia , Feminino , Gengiva/diagnóstico por imagem , Humanos , Incisivo/diagnóstico por imagem , Incisivo/patologia , Masculino , Maxila/diagnóstico por imagem , Pessoa de Meia-Idade , Radiografia Interproximal , Raiz Dentária/diagnóstico por imagem , Adulto Jovem
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