Research: Application time of adhesion systems important for success

By Gordon J. Christensen, DDS, MSD, PhD

Most dentists try to be as time efficient with clinical procedures as possible. However, sometimes we get in too much of a hurry. A recent study showed that single-step self-etch systems should be placed on the tooth preps for the manufacturers’ recommended times to provide optimum bond to enamel. Most of these systems are mild acids compared to phosphoric acid, and it appears that they need the recommended contact time with the enamel to provide an optimum bond.

Tsuchiya H, Tsubota K, et al. Influence of adhesive application time on enamel bond strength of single-step self-etch adhesive systems. Oper Dent. Jan.-Feb. 2010; 35(1):77-83.

Dr. Gordon Christensen comments: I suggest that dental assistants be educated about the proper use of all materials, especially self-etch bonding systems, since improper use can produce inadequate bond and potential postoperative tooth sensitivity. — March/April 2010 Guide for Preferred Clients, Vol. 15, Issue 2

Author bio
Dr. Christensen is a practicing prosthodontist in Provo, Utah, and a Diplomate for the American Board of Prosthodontics. He is the founder and director of Practical Clinical Courses, an international continuing education organization initiated in 1981 for dental professionals. Dr. Christensen is a cofounder (with his wife, Rella) and senior consultant of CLINICIANS REPORT (formerly Clinical Research Associates), which has conducted research in all areas of dentistry since 1976. Dr. Christensen is an adjunct professor for Brigham Young University and the University of Utah.