IADR Abstract Archives
Effect of fluoride release from temporary cements on permanent cementation
Objectives: Goal of this study was to investigate the effect of fluoride release of temporary cements on permanent cementation.
Methods: An experimental fluoride releasing temporary cement (EXPTC, 3M Oral Care), and a zinc oxide based non-fluoride releasing temporary cement (Temp-Bond™ NE, TBNE, Kerr) were used. Bovine teeth were ground with 120 and 320 grit silicon carbide sand paper to prepare enamel and dentin surfaces. Above temporary cements were used per their instructions for use (IFU): cement was applied to pre-cured 4mm diameter/2mm high buttons of Filtek Z-250 (3M ESPE) and placed on hard tissue; 250g weight was applied for 1 minute and excess cement removed. Adhesion samples were stored in 37C de-ionized water for 4 weeks and were broken in shear mode by Instron. Subsequently, teeth were physically cleaned using dental scaler to remove all remnants from temporary cement. Adhesion samples of RelyX™ Luting Plus (RLP, 3M Oral Care) and Maxcem Elite™ (MXE, Kerr) permanent cements were prepared following their IFU in self-cure mode. Bond strengths were measured after 1 day.
Results: Mean values for bond strengths, including standard deviations, are summarized in following table:
Conclusions: ANOVA analysis was performed at p < 0.05 per Tukey’s pairwise comparison test. Though there was significant difference in F release of temporary cements, there was no significant impact on bond strengths of permanent cement to the hard tissues.
Methods: An experimental fluoride releasing temporary cement (EXPTC, 3M Oral Care), and a zinc oxide based non-fluoride releasing temporary cement (Temp-Bond™ NE, TBNE, Kerr) were used. Bovine teeth were ground with 120 and 320 grit silicon carbide sand paper to prepare enamel and dentin surfaces. Above temporary cements were used per their instructions for use (IFU): cement was applied to pre-cured 4mm diameter/2mm high buttons of Filtek Z-250 (3M ESPE) and placed on hard tissue; 250g weight was applied for 1 minute and excess cement removed. Adhesion samples were stored in 37C de-ionized water for 4 weeks and were broken in shear mode by Instron. Subsequently, teeth were physically cleaned using dental scaler to remove all remnants from temporary cement. Adhesion samples of RelyX™ Luting Plus (RLP, 3M Oral Care) and Maxcem Elite™ (MXE, Kerr) permanent cements were prepared following their IFU in self-cure mode. Bond strengths were measured after 1 day.
Results: Mean values for bond strengths, including standard deviations, are summarized in following table:
Conclusions: ANOVA analysis was performed at p < 0.05 per Tukey’s pairwise comparison test. Though there was significant difference in F release of temporary cements, there was no significant impact on bond strengths of permanent cement to the hard tissues.