In Vitro Comparison of Indirect Bonding Methods Using Different Isolation and Adhesive Systems with Each Other

Purpose of this study is to compare the shear bond strength and adhesive remnant index of a new indirect bonding isolation method for different adhesive systems with the direct bonding technique. 100 premolars and 10 incisors extracted human teeth were bonded with one direct and four indirect bonding methods, and then subjected to 1000 thermal cycles between 5°C and 55°C. Adhesive Remnant Index (ARI) was analyzed by the chi-square test. The Shear Bond strength was analyzed by the analysis of variance (ANOVA) and the Tukey multiple comparison (HSD) test. The bracket-enamel interface area of two teeth from each group was examined under scanning electron microscope (SEM). All groups provided clinically acceptable bond strengths. In the traditional isolation + light-cured bonding group with the highest bonding values identi?ed, the scores for all failures were recorded as 3 and this group differs from all other groups in respect of ARI scores (p<0.05). In addition, it was identi?ed from SEM images that there were air bubbles in the adhesive layer in the groups where chemical adhesives were used. When a tape is used as the isolation material, the laboratory process stage is shortened and simpli?ed. Therefore, if the custom base indirect bonding technique is to be used, this new method can be used with light-cured bonding agent for isolation.