关键词: 黏结, 牙颈部楔状缺损, 激光扫描共聚焦显微镜

Abstract: Objective To examine the effect of total-etch and self-etch adhesives on the bonding interface of class V non-carious lesions. Methods A total of 6 maxillary bicuspids were divided into two groups. Artifically prepared wedge-shaped lesions were made in sound maxillary bicuspids and bonded using the Single Bond （SB， total-etching adhesive）， Adper Promp L-Pop（AP， one-step self-etching） according to the manufacturer’s instruction. The primer component was labeled with Rhodamine B Isothiocyanate. Observe the dentin bonding interface by CLSM. Results Whatever in the total-etch or self-etch， both the bonding interfaces had favorable infiltration. No separation happened between the bonding materials and interfaces. Resin tag and hybrid layer in total-etching adhesive （SB） were longer and thicker than in self-etching adhesive （AP）. Conclusion When bonding the same type dentin substrate， the resin rags are fewer and shorter and the hybrid layers are thinner in used self-etching adhesive than total-etching.

Key words: bonding, non-carious lesions, confocal laser scanning microscope