Subjects. The subjects were 151 patients who were treated by dental students from 1996 to 1998. A total of 391 restorations were placed. Exposure. Of the 4 factors investigated by the authors, this report focuses on the type of dentin-bonding agent used: 2 types of chemical-cured versus 4 types of light-cured dentin-bonding agents. Selection of bonding and restoration agent was made by professors. No criteria for selection of restorative materials were presented. Main Outcome Measure. Incidence of postoperative sensitivity was measured by using spontaneous pain, thermal sensitivity, and sensitivity to percussion. The authors did not specify the method of ascertainment of outcome. Main Results. Light-cured and chemically cured dentin-bonding agents were associated with a 9% and an 18% risk for postoperative sensitivity, respectively. Patients reported no spontaneous pain.
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