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  • Title: Comparative study of the effect of ultrasound on the removal of intracanal posts.
    Author: Braga NM, Resende LM, Vasconcellos WA, Paulino SM, Sousa-Neto MD.
    Journal: Gen Dent; 2009; 57(5):492-5. PubMed ID: 19903640.
    Abstract:
    This study sought to evaluate how ultrasound affected the removal of stainless steel and titanium posts that had been attached with two different resin cements. The crowns of 32 maxillary canines were removed, the roots were embedded in acrylic resin blocks, and the canals were treated endodontically. The specimens were randomly distributed into two groups (n = 16) according to the brand of cement and subdivided (n = 8) according to the type of post. The specimens were submitted to ultrasonic vibration applied perpendicularly to the long axis of the tooth for 60 seconds. Data were submitted to ANOVA and showed no significant statistical difference among the groups (p > 0.05). It may be concluded that the effects of ultrasonic vibration used to remove intraradicular posts were not significantly different when applied to stainless steel or titanium posts cemented with chemically or dual-activated resin cements.
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