Effect of immersion cleansers on the bond strength between a denture base resin and acrylic resin teeth

Autor(es)

Pero, Ana Carolina ^[1] ; Scavassin, Priscila Mattos ^[1] ; Perin Leite, Andressa Rosa ^[1] ; Mendoza Marin, Danny Omar ^[1] ; Paleari, Andre Gustavo ^[1] ; Compagnoni, Marco Antonio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES; v. 44, p. 180-183, JUL 2013.
• Citações Web of Science: 2

Resumo

The aim of the present study was to assess the shear bond strength between a heat-polymerized denture base resin and acrylic resin teeth after immersion in different denture cleansers by simulating a 180-day use. Two acrylic teeth (Biotone, Biotone IPN, Dentsply Ind. e Corn., Rio de Janeiro, RJ, Brazil) were chosen for bonding to a heat-polymerized denture base resin (Lucitone 550- Dentsply Ind. e Com., Rio de Janeiro, RJ, Brazil). Eighty specimens were produced and divided into eight groups (n = 10) according to their experimental condition (distilled water, 2% chlorhexidine digluconate, 1% sodium hypochlorite and Corega Tabs). Shear bond strength tests (MPa) were performed with a universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed by two-way analysis of variance (ANOVA) and Student-Newman-Keuls' multiple comparisons post hoc analysis (alpha = .05). The shear bond strength results revealed statistically significant differences between the groups. For the Biotone IPN tooth, significantly lower shear bond strength values were found for the group immersed in sodium-perborate solution (4.48 +/- 2.18 MPa) than for the group immersed in distilled water (control group) (10.83 +/- 1.84 MPa). For Biotone, significantly higher bond strength values (10.04 +/- 3.28 MPa) were found for the group immersed in Corega Tabs than for the control group (5.45 +/- 2.93 MPa). The immersion in denture cleanser solutions was more detrimental to the conventional acrylic denture tooth (Biotone) than to the highly cross-linked denture tooth (Biotone IPN). However, this effect was not observed for the groups immersed in Corega Tabs solution, regardless of the type of denture tooth. (c) 2013 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/18031-4 - Efeito da imersão em soluções desinfetantes na resistência de união de dois tipos de dentes artificiais unidos a uma resina acrílica termopolimerizável
• Beneficiário: Priscila Mattos Scavassin
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica