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• W4769821 abstract "Objective The aim of this study was to evaluate the shear bond strength of four self-etching adhesive systems on intact and ground enamel, and also to evaluate the morphology of the enamel surface after etching. Methods A total of 100 bovine central lower incisors were randomly divided into five groups: Single Bond (3M ESPE, St. Paul, USA), Adper Prompt L Pop (3M ESPE, St. Paul, USA), Clearfil SE Bond (Kuraray America, USA), One-up Bond F (Tokuyama Corp., Shibuya-ku, Tokyo, Japan) and AdheSE (Ivoclar/ Vivadent, Schaan, Liechtenstein). Each group was subdivided (n=10), according to the surface preparation (intact or ground enamel). For intact enamel, the teeth were pumiced and ground enamel surfaces were obtained with wet 320-grit SiC paper. A circular (4mm) bonding area was demarcated and resin rods (Filtek Z250, 3M ESPE, St. Paul, USA) were built (5mm) for the shear test, followed by failure mode analysis using Scanning Electron Microscopy. In addition, 12 teeth were prepared for the evaluation of the etching pattern by Scanning Electron Microscopy. Statistical analysis of the data was performed with two-way ANOVA and Tukey’s test (p<0.05). Results Significant differences were observed between the Shear bond strength values for the adhesive systems (p<0.001). No differences were found between the two substrates (p=0.598) nor any interaction between the adhesive systems versus substrate (p=0.404). The etching patterns were generally observed as mild when compared to phosphoric acid, except for Adper Prompt L Pop (3M ESPE, St. Paul, USA), which was similar to phosphoric acid. Conclusion Shear bond strength was not influenced by the type of substrate (intact or ground enamel), and no correlation was observed between the Shear bond strength values and the etching pattern of the self-etching adhesives studied. Indexing terms : Dentin-bonding agents. Dental enamel. Shear strength. RESUMO Objetivo Avaliar a resistencia ao cisalhamento e o padrao de condicionamento de quatro sistemas adesivos autocondicionantes em esmalte intacto e preparado. Metodos Cem incisivos centrais inferiores bovinos foram aleatoriamente divididos em cinco grupos: Single Bond (3M ESPE, St. Paul, USA), Adper Prompt L Pop (3M ESPE, St. Paul, USA), Clearfil SE Bond (Kuraray America, USA), One-up Bond F (Tokuyama Corp., Shibuya-ku, Tokio, Japan) e AdheSE (Ivoclar/Vivadent, Schaan, Liechtenstein). Cada grupo foi subdividido (n=10) de acordo com o tipo de superficie. Os dentes com esmalte intacto foram limpos com pasta de pedra pommes/agua e os com esmalte preparado tiveram a superficie do esmalte desgastada com lixas d’agua (n.320). Uma area circular(4mm) foi demarcada para adesao e os cilindros de resina (Filtek Z250, 3M ESPE, St. Paul, USA) foram confeccionados (5mm). Apos o ensaio resistencia ao cisalhamento, foi realizada a avaliacao do modo de fratura. Doze dentes foram preparados para avaliacao do padrao de condicionamento em Microscopia Eletronica de Varredura. A analise estatistica dos dados foi realizada atraves do teste ANOVA para 2 fatores e teste de Tukey (p<0.05). Resultados Diferencas estatisticamente significante foram observadas para a resistencia ao cisalhamento entre os sistemas adesivos (p<0.001). Nao foram observadas diferencas entre os substratos (p=0.598) ou ainda interacoes entre o sistema adesivo versus o substrato (p=0.404). Os padroes de condicionamento observados foram classificados em leve em relacao ao padrao apos o condicionamento com o acido fosforico, com excecao do padrao observado para o adesivo Adper Prompt L Pop (3M ESPE, St. Paul, USA). Conclusao A resistencia ao cisalhamento nao foi influenciada pelo tipo de substrato, e, nenhuma correlacao entre os valores de resistencia ao cisalhamento e padrao de condicionamento dos adesivos autocondicionantes estudados foi observado. Termos de indexacao : Adesivos dentinarios. Esmalte dentario. Resistencia ao cisalhamento." @default.
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• W4769821 date "2011-11-30" @default.
• W4769821 modified "2023-09-27" @default.
• W4769821 title "Shear bond strength and etching pattern of self-etching bonding agents on ground and intact enamel / Resistência ao cisalhamento e padrão de condicionamento de sistemas adesivos autocondicionantes em esmalte intacto e preparado" @default.
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