PURPOSE: The purpose of this study was to assess the effect of different concentrations of chlorhexidine digluconate on the bond strength to primary tooth dentin immediately and after 12 months. METHODS: Twenty-one sound primary molars were assigned to 3 groups (N=7). The bonding procedure was performed in control group (A) using 37% phosphoric acid gel (15 seconds), then washed (15 seconds), dried with air (30 seconds), and rehydrated with water. Groups B and C had the rewetting procedure performed, respectively, with 0.5% and 2% chlorhexidine for 30 seconds. The tensile bond strength was tested immediately (IM) or after storage in artificial saliva for 12 months (12M). Data were evaluated by 2-way repeated measures analysis of variance and Tukey's post-hoc test. RESULTS: There was no significant reduction in bond strength values when chlorhexidine was used at concentrations of 0.5% (IM=49.3/2.6 and 12M=32.3/7.9) and 2% (IM=44.0/8.7 and 12M=34.6/5.1). Conversely, a significantreduction in bond strength was observed in the control group (IM=50.8/12.8 and 12M=20.4/3.7). CONCLUSION: The study validates the concept that chlorhexidinesolution, at different concentrations, may prevent the degradation of the adhesive interface in primary teeth.
PURPOSE: The purpose of this study was to assess the effect of different concentrations of chlorhexidine digluconate on the bond strength to primary tooth dentin immediately and after 12 months. METHODS: Twenty-one sound primary molars were assigned to 3 groups (N=7). The bonding procedure was performed in control group (A) using 37% phosphoric acid gel (15 seconds), then washed (15 seconds), dried with air (30 seconds), and rehydrated with water. Groups B and C had the rewetting procedure performed, respectively, with 0.5% and 2% chlorhexidine for 30 seconds. The tensile bond strength was tested immediately (IM) or after storage in artificial saliva for 12 months (12M). Data were evaluated by 2-way repeated measures analysis of variance and Tukey's post-hoc test. RESULTS: There was no significant reduction in bond strength values when chlorhexidine was used at concentrations of 0.5% (IM=49.3/2.6 and 12M=32.3/7.9) and 2% (IM=44.0/8.7 and 12M=34.6/5.1). Conversely, a significantreduction in bond strength was observed in the control group (IM=50.8/12.8 and 12M=20.4/3.7). CONCLUSION: The study validates the concept that chlorhexidinesolution, at different concentrations, may prevent the degradation of the adhesive interface in primary teeth.
Authors: Leo Tjäderhane; Fabio D Nascimento; Lorenzo Breschi; Annalisa Mazzoni; Ivarne L S Tersariol; Saulo Geraldeli; Arzu Tezvergil-Mutluay; Marcela Carrilho; Ricardo M Carvalho; Franklin R Tay; David H Pashley Journal: Dent Mater Date: 2013-08-14 Impact factor: 5.304
Authors: Tasnim Hamdan-Nassar; Carlos Bellot-Arcís; Vanessa Paredes-Gallardo; Verónica García-Sanz; Agustín Pascual-Moscardó; José Manuel Almerich-Silla; José María Montiel-Company Journal: Medicina (Kaunas) Date: 2019-12-02 Impact factor: 2.430