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The influence of ultrasound in removing intraradicular posts
A Berbert1, M T Filho, A H Ueno
1Department of Endodontics, Bauru School of Dentistry, University of São Paulo, Brazil.
Abstract:
Thirty single-rooted teeth were prepared to receive cast posts. After cementation of the post the teeth were divided into three groups. Group I did not receive any treatment, whereas the posts in groups II and III were treated with an ultrasonic device, for 2 min and 5 min, respectively. The force required for post removal was determined using a universal test machine. No statistical differences (P > 0.05) were found between the groups where ultrasound had been used. Significantly reduced forces were necessary to remove the posts from group II and III, compared with group I which did not receive ultrasonic treatment (P < 0.05).