A radiographic recall evaluation of 894 endodontic cases treated in a dental school setting.

A radiographic recall evaluation of 894 endodontic cases treated by dental students at the University of Oklahoma College of Dentistry was conducted by faculty. The purpose of this study was to determine the success of standardized nonsurgical endodontic treatments by using radiographic techniques of determination and to compare the results to similar studies at other dental schools. Cases were labeled as successful, acceptable, questionable, and failing. Observations included time since treatment, age, gender, and tooth type. The combined percentage of successful and acceptable cases was 91.05%. Differences in percentage of success among recall time intervals were statistically significant (p < 0.01), as were the percentages of success between tooth types treated (p < 0.05). Success rate was not affected by age or gender (p > 0.05). The overall rate of successful and acceptable cases in this study was found to compare favorably with those from recall studies conducted at other dental schools.