[PMID]: | 26855030 |
[Au] Autor: | Saikaew P; Chowdhury AF; Fukuyama M; Kakuda S; Carvalho RM; Sano H |
[Ad] Endereço: | Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Kita 13, Nishi 7, Kita-ku, Sapporo 060-8586, Japan. Electronic address: pipop045@den.hokudai.ac.th. |
[Ti] Título: | The effect of dentine surface preparation and reduced application time of adhesive on bonding strength. |
[So] Source: | J Dent;47:63-70, 2016 Apr. |
[Is] ISSN: | 1879-176X |
[Cp] País de publicação: | England |
[La] Idioma: | eng |
[Ab] Resumo: | OBJECTIVE: This study evaluated the effects of surface preparation and the application time of adhesives on the resin-dentine bond strengths with universal adhesives. METHODS: Sixty molars were cut to exposed mid-coronal dentine and divided into 12 groups (n=5) based on three factors; (1) adhesive: G-Premio Bond (GP, GC Corp., Tokyo, Japan), Clearfil Universal Bond (CU, Kuraray Noritake Dental Inc., Okayama, Japan) and Scotchbond Universal Adhesive (SB, 3M ESPE, St. Paul, MN, USA); (2) smear layer preparation: SiC paper ground dentine or bur-cut dentine; (3) application time: shortened time or as manufacturer's instruction. Fifteen resin-dentine sticks per group were processed for microtensile bond strength test (µTBS) according to non-trimming technique (1mm(2)) after storage in distilled water (37 °C) for 24h. Data were analyzed by three-way ANOVA and Dunnett T3 tests (α=0.05). Fractured surfaces were observed under scanning electron microscope (SEM). Another 12 teeth were prepared and cut into slices for SEM examination of bonded interfaces. RESULTS: µTBS were higher when bonded to SiC-ground dentine according to manufacturer's instruction. Bonding to bur-cut dentine resulted in significantly lower µTBS (p<0.000). Shortening the application time resulted in significantly lower bond strength for CU on SiC and GP on bur-cut dentine. SEM of fractured surfaces revealed areas with a large amount of porosities at the adhesive resin interface. This was more pronounced when adhesives were bonded with a reduced application time and on bur cut dentine. CLINICAL SIGNIFICANCE: The performance of universal adhesives can be compromised on bur cut dentine and when applied with a reduced application time. |
[Mh] Termos MeSH primário: |
Colagem Dentária/métodos Adesivos Dentinários/química Dentina/química Preparo do Dente/métodos
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[Mh] Termos MeSH secundário: |
Ataque Ácido Dentário/métodos Adesivos Equipamentos Odontológicos de Alta Rotação Análise do Estresse Dentário Dentina/efeitos dos fármacos Adesivos Dentinários/farmacologia Seres Humanos Dente Serotino/efeitos dos fármacos Dente Serotino/ultraestrutura Distribuição Aleatória Camada de Esfregaço/química Propriedades de Superfície Fraturas dos Dentes/terapia
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[Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T |
[Nm] Nome de substância:
| 0 (Adhesives); 0 (Dentin-Bonding Agents) |
[Em] Mês de entrada: | 1705 |
[Cu] Atualização por classe: | 170512 |
[Lr] Data última revisão:
| 170512 |
[Sb] Subgrupo de revista: | D; IM |
[Da] Data de entrada para processamento: | 160209 |
[St] Status: | MEDLINE |
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