COMPARATIVE ANALYSIS OF TWO ULTRASONIC INSTRUMENTS FOR INTRARADICULAR POST REMOVAL
Keywords:
Intraradicular post, Retreatment, UltrasoundAbstract
lntraradicular post removal may bring difficulties to the endodontic retreatment. The ultrasonic method is considered the most conservative. Therefore, it allows the preservation of the remaining dental structure. Enac (Osada Eletric Co., Japan) and Jet Sonic Four Plus (Cnatus, Ribeirao Preto, Brazil), both with piezoelectric effect, were evaluated according to their efficacy. Extracted human incisive and canine teeth were treated endodontically, receiving prefabricated Unimetric (DentsplylMaillefer
lnstruments SA, Switzerland) fixed with autopolymerysed resinous Cement-it (JenericlPenton, lSA). The time spent for the post removal was registered. The Enac presented a mean time of 4,33 minutes for incisive teeth and 7,08 minutes for canine teeth (p>0,05); and, the Jet Sonic Four Plus, a mean time of 3,86 minutes for incisive teeth and 6,54 minutes for canine teeth (p>0.05). The conclusion was that both ultrasonic equipments tested were efficient in intraradicular post removal, with no need of additional methods; and no significant statistical difference was observed.
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