Effect of simulated intraoral erosion and/or abrasion effects on etch-and-rinse bonding to enamel

Autor(es)

Wang, Linda ^[1] ; Casas-Apayco, Leslie C. ^[2] ; Hipolito, Ana Carolina ^[3] ; Dreibi, Vanessa Manzini ^[1] ; Giacomini, Marina Ciccone ^[1] ; Bim Junior, Odair ^[1] ; Rios, Daniela ^[4] ; Magalhaes, Ana Carolina ^[5]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, BR-17012101 Bauru, SP - Brazil

^[2] Univ Peruana Ciencias Aplicadas, Sch Dent, Lima - Peru

^[3] Sao Paulo State Univ, UNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Bauru Sch Dent, Dept Pediat Dent Orthodont & Collect Hlth, BR-17012101 Bauru, SP - Brazil

^[5] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, BR-17012101 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF DENTISTRY; v. 27, n. 1, p. 29-34, FEB 2014.
• Citações Web of Science: 4

Resumo

Purpose: To assess the influence of simulated oral erosive/abrasive challenges on the bond strength of an etch-and-rinse two-step bonding system to enamel using an in situ/ex vivo protocol. Methods: Bovine enamel blocks were prepared and randomly assigned to four groups: CONT - control (no challenge), ABR - 3x/day-1 minute toothbrushing; ERO - 3x/day - 5 minutes extraoral immersion into regular Coca Cola; and ERO+ABR - erosive protocol followed by a 1-minute toothbrushing. Eight blocks were placed into an acrylic palatal appliance for each volunteer (n=13), who wore the appliance for 5 days. Two blocks were subjected to each of the four challenges. Subsequently, all the blocks were washed with tap water and Adper Single Bond 2/ Filtek Z350 were placed. After 24 hours, 1 mm(2)-beams were obtained from each block to be tested with the microtensile bond strength test (50 N load at 0.5 mm/minute). The data were statistically analyzed by one-way RM-ANOVA and Tukey's tests (alpha= 0.05). Results: No difference was detected among the ABR, ERO, and CONT groups (P> 0.05). ERO+ABR group yielded lower bond strengths than either the ABR and ERO groups (P< 0.0113). (AU)

• Processo FAPESP: 09/14986-0 - Avaliação in vitro de diferentes concentrações de clorexidina na resistência a união à dentina normal e erodida
• Beneficiário: Linda Wang
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/01377-5 - Avaliação in situ/ex vivo da resistência adesiva do esmalte previamente submetido à erosão associada ou não à abrasão
• Beneficiário: Ana Carolina Hipólito
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica