Abstract
The pulpal reactions of dog teeth were investigated after full coverage crowns were set with new dental adhesive resins, Super Bond C & B and Panavia EX. Elite Cement 100 and Durelon was used as control. Histopathological changes were examined according to the standard of ADA on 123 adult dog teeth at different periods of time after the setting of crowns. All of the materials satisfied the ADA standard. However, histopathological reactions changed with a lapse of time in a way different for each material. With all materials, acute inflammatory reactions of pulpal were observed after 1-3 days, though the reactions caused by the new resins were less severe than those caused by Elite Cement 100 and Durelon. The acute inflammatory reaction disappeared after 25-35 days except the teeth with Elite Cement 100, and the formation of reparative dentine was observed with all materials. The inflammatory reaction caused by Elite Cement 100 was not ob. served after 50-60 days, and the formation of reparative dentine became less remarkable with all materials. These results suggest that the effects of Super Bond C & B and Panavia EX on dental pulp were less harmful than those of usual setting materials.
