Abstract
In 56 cases of traumatized immature permanent maxillary central incisors requiring endodontic therapy, root apexification was induced with 3 kinds of Calcium Hydroxide pastes.
22 teeth were filled with Calcium Hydroxide-distilled water paste (group C), and 15 teeth were filled with Calcium Hydrixide-CMCP paste (group F), with replacement of paste every 3 or 4 months.18 teeth were filled with“VITAPEX”(group V), with the“VITAPEX”removed within 2 years and 9 month.
These cases were observed clinically and radiographically, and the mean observation period was 3 years 8 months. The following results were obtained.
1) In the C group and the F group (except in 1 tooth), apical closure was observed in 3 years and 1 month. Apical closure of these teeth seemed to be influenced by the condition of the root canals and degree of the apex width at the start of apexification. The wider the root apex is at the start of apexification, the later the apical closure tended to be observed.
2) In the V group, radiographical apical closure was observed in 15 teeth, but apical closure by formation of hard tissue were observed in only 4 teeth. The partial disappear of the roentgenographic opacity of“VITAPEX”was observed in many cases.
