Long-Term Chlorhexidine Effect on Bond Strength to Er: YAG Laser Irradiated-Dentin

Autor(es)

Galafassi, Daniel ^[1] ; Scatena, Camila ^[2] ; Colucci, Vivian ^[1] ; Rodrigues-Junior, Antonio Luiz ^[3] ; Serra, Monica Campos ^[1] ; Milori Corona, Silmara Aparecida ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Ribeirao Preto Dent Sch, Dept Restorat Dent, BR-14040904 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Ribeirao Preto Dent Sch, Dept Paediat Clin, BR-14040904 Sao Paulo - Brazil

^[3] Univ Sao Paulo, Ribeirao Preto Med Sch, Dept Social Med, BR-14040904 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 77, n. 1, p. 37-43, JAN 2014.
• Citações Web of Science: 0

Resumo

This study evaluates the bond strength of dentin prepared with Er:YAG laser or bur, after rewetting with chlorhexidine on long-term artificial saliva storage and thermocycling. One hundred and twenty human third molars were sectioned in order to expose the dentin surface (n=10). The specimens were randomly divided in 12 groups according to treatment and aging: Er:YAG laser rewetting with deionized water (LW) and 24 h storage in artificial saliva (WC); LW and 6 months of artificial saliva storage+12.000 thermocycling (6M), LW and 12 months of artificial saliva storage+24.000 thermocycling (12M), Er:YAG laser rewetting with 2% chlorhexidine (LC) and WC, LC and 6M, LC and 12M, bur on high-speed turbine rewetting with deionized water (TW) and WC, TW6M, TW12M, bur on high-speed turbine+2% chlorhexidine (TC) and WC, TC and 6M, TC and12M. The specimens were etched with 35% phosphoric acid, washed, and dried with air. Single Bond 2 adhesive was applied and the samples were restored with a composite. Each tooth was sectioned in order to obtain 4 sticks, which were submitted to microtensile bond strength test (mu TBS). The two-way ANOVA, showed no significant differences for the interaction between the factors and for the aging factor. Tukey 5% showed that the LC group had the lowest mu TBS. The rewetting with chlorhexidine negatively influenced the bond strength of the preparation with the Er:YAG laser. The artificial saliva aging and thermocycling did not interfere with dentin bond strength. Microsc. Res. Tech. 77:37-43, 2014. (c) 2013 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 08/09042-0 - Efeito da clorexidina na preservação da camada híbrida e resistência adesiva da dentina preparada com laser de er:yag: estudo in vitro
• Beneficiário: Daniel Galafassi
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 09/11225-8 - Efeito da clorexidina na preservação da camada híbrida e resistência adesiva da dentina preparada com laser de er:yag. estudo in vitro.
• Beneficiário: Silmara Aparecida Milori Corona
• Modalidade de apoio: Auxílio à Pesquisa - Regular