Y Kitasako1, M F Burrow, T Nikaido, J Tagami. 1. Department of Operative Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University, Tokyo, Japan. y.kitasako.odnt@dent.tmd.ac.jp
Abstract
OBJECTIVES: This study was conducted to determine the influence of storage solution on the bond durability of three resin cements to bovine dentin over the period of 1 year. METHODS: Ten bovine dentin specimens were tested for shear bond strength with each material (Panavia 21, Kuraray Co.; BISTITE, Tokuyama Co; MASA Bond, Sun Medical Co.) and storage mode, listed below. Four storage environments were studied as follows: water changed every day for 1 year; water unchanged for 1 year; Phosphate Buffered Saline (PBS) changed every week over 1 year; PBS unchanged for 1 year. Ten teeth were also tested for each material at 1 day as a control. The mode of failure was classified after fracture of the bonds by SEM observation. The means of the bond strengths were compared statistically by two-way ANOVA and Fisher's PLSD test (p < 0.05). Results for the mode of fracture were analyzed using the Mann-Whitney U test. RESULTS: Although there was no statistical difference in the mean bond strengths between the water and PBS storage solutions (p > 0.05) in all cements, the results for the shear bond strengths in the changed storage solution groups were significantly lower than those where the storage solution remained unchanged (p < 0.05). There were statistical differences between the 1 day results and the changed water groups among all cements (p < 0.05). SIGNIFICANCE: The storage condition influenced the long-term durability of dentin bonding with resin cements.
OBJECTIVES: This study was conducted to determine the influence of storage solution on the bond durability of three resin cements to bovine dentin over the period of 1 year. METHODS: Ten bovine dentin specimens were tested for shear bond strength with each material (Panavia 21, Kuraray Co.; BISTITE, Tokuyama Co; MASA Bond, Sun Medical Co.) and storage mode, listed below. Four storage environments were studied as follows: water changed every day for 1 year; water unchanged for 1 year; Phosphate Buffered Saline (PBS) changed every week over 1 year; PBS unchanged for 1 year. Ten teeth were also tested for each material at 1 day as a control. The mode of failure was classified after fracture of the bonds by SEM observation. The means of the bond strengths were compared statistically by two-way ANOVA and Fisher's PLSD test (p < 0.05). Results for the mode of fracture were analyzed using the Mann-Whitney U test. RESULTS: Although there was no statistical difference in the mean bond strengths between the water and PBS storage solutions (p > 0.05) in all cements, the results for the shear bond strengths in the changed storage solution groups were significantly lower than those where the storage solution remained unchanged (p < 0.05). There were statistical differences between the 1 day results and the changed water groups among all cements (p < 0.05). SIGNIFICANCE: The storage condition influenced the long-term durability of dentin bonding with resin cements.
Authors: Adriana Pigozzo Manso; Rosa Helena Miranda Grande; Ana Karina Bedran-Russo; Alessandra Reis; Alessandro D Loguercio; David Henry Pashley; Ricardo Marins Carvalho Journal: Dent Mater Date: 2014-05-09 Impact factor: 5.304
Authors: Yasmine M Pupo; Paulo Vitor Farago; Jessica M Nadal; Luzia C Simão; Luís Antônio Esmerino; Osnara M M Gomes; João Carlos Gomes Journal: Int J Mol Sci Date: 2014-05-20 Impact factor: 5.923