| [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
|
| [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
|
| [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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