The influence of ultrasound in removing intraradicular posts.
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).
Berbert
A
A
Department of Endodontics, Bauru School of Dentistry, University of São Paulo, Brazil.
Filho
M T
MT
Ueno
A H
AH
Bramante
C M
CM
Ishikiriama
A
A
D000704:Analysis of Variance; D017005:Dental Debonding / Q000379:methods*; D006801:Humans; D011176:Post and Core Technique / Q000295:instrumentation*; D011897:Random Allocation; D012086:Reoperation; D012390:Root Canal Therapy / Q000379:methods*; D014465:Ultrasonics