A COMPARISON OF ENDODONTIC TREATMENT RESULTS AT 2 DENTAL SCHOOLS

Endodontic treatment results were assessed in a controlled clinical st udy in Arhus. Undergraduate students used either Kloroperka or AH26 as sealer in a randomized fashion. The findings were compared with the r esults from a previous study of identical design in Oslo, which involv ed Kloroperka, AH26 and ProcoSol. While Kloroperka performed slightly, but significantly less well than AH26 or ProcoSol in the Oslo study, no difference was found between Kloroperka and AH26 in the present stu dy. The overall treatment results were poorer in Arhus than in Oslo, b ut this might be explained by a marked difference in the preoperative diagnoses and in the.technical problems associated with the teeth sele cted for treatment. When results of endodontic treatment carried out a t different locations are compared, variations in case selection and p reoperative diagnoses must be corrected for in order to obtain an adeq uate basis for comparison.