1996 Volume 34 Issue 5 Pages 1036-1043
The purpose of the present study was to examine both the effect of prophylactic treatment of dens evaginatus with composite resin and the prognosis of canal treatment of immature permanent teeth with fractured dens evaginatus.
Forty one patients (22 M,19 F, average age 12.5 y) with 94 teeth with dens evaginatus were examined longitudinally, The results are summarized as follows:
1. The developmental anomaly was found mainly in mandibular premolars. Of 94 teeth,43 were mandibular second premolars (45.7%), and 28 were mandibular first premolars (28.7%). The ratio of affected lower to upper premolars was nearly 4: 1. The mean number of dens evaginatus per patient was 2.3 teeth.
2. The mean sizes of the tubercle were 2.31 mm (mesial-distal), and 2.04 mm (buccal-lingual) in the mandibular second premolars.
3. Only one of 53 teeth with dens evaginntus which had been reinforced with composite resin fractured during the investigation.
4. By fracturing the dens evaginatus,18 immature permanent premolars became devital. These teeth were administered endodontic therapy with Vitapex® to promote apical development. In 11 of these teeth, closure of the apical root canal by hard tissue formation occurred, with 9 of them showing root development.
