Abstract:

Objective

This study evaluated the clinical performance of a single-step self-etch adhesive system Adper Easy One over a one-year follow-up period.

Methods

Twenty-seven patients who had two permanent molar occlusal caries received following restorations：（1） single-step self-etching adhesive （Adper Easy one， 3M ESPE） was applied to one tooth following manufacturer's instructions；（2） two-step total-etching adhesive （Scotchbond， 3M ESPE； Adper Single Bond 2， 3M ESPE） was applied to the other tooth as the control. Filtek Z350 （3M ESPE） was used as the restorative composite for all restorations. Postoperative sensitivity was evaluated， and the restorations were assessed according to USPHS/Ryge standard at baseline （instantly）， after one week， half a year and one year of clinical service.

Results

Adper Easy One group had one case of postoperative sensitivity， while two cases in the total-etching adhesive group had postoperative sensitivity at one week visit， and there were no significant differences between the two groups （P ＞0.05）. One restoration in the total-etching adhesive group lost marginal integrity at one-year recall， and all other restorations were clinically acceptable，without significant differences between the two groups （P＞0.05）. The indicators of color match， anatomical form and surface roughness maintained sound in all restorations， without marginal staining and secondary caries.

Conclusions

One year follow up showed low postoperative sensitivity rate and satisfactory clinical performance of the single-step self-etch adhesive system.

Key words: Self-etch adhesive systems, TypeⅠcavity, Clinical study