Ex vivo ability of a noninstrumentation technique to disinfect oval-shaped canals

Journal of Conservative Dentistry : JCD
Ghassan Yared, Ghada Asmar Ramli

Abstract

Oval-shaped canals represent a challenge in endodontics. Infected tissue may remain in their recesses. This concern may be more critical with minimally instrumentation techniques. The present study evaluated the disinfection ability in oval-shaped canals of a noninstrumentation technique using ultrasonic agitation and intracanal heating of sodium hypochlorite (NaOCl) compared to rotary canal preparation and ultrasonic agitation with and without heating of NaOCl. Sixty extracted mandibular incisors were included. The teeth had pulp necrosis and apical periodontitis and oval-shaped canals. They were divided into three groups depending on the treatment protocol: (1) IHAN: intracanal heating and ultrasonic agitation of NaOCl only, (2) R-IHAN: Rotary preparation followed by IHAN, and (3) R-passive ultrasonic agitation (PUA): Rotary preparation and ultrasonic agitation of NaOCl. Root canal samples were taken before (S1) and after (S2) the endodontic procedures were completed and cultured anaerobically. Wilcoxon tests were performed to compare colony-forming units (CFUs) before and after the endodontic procedures for the three groups. The percentage of variation of CFUs was compared among the three groups using Kruskal-Wallis tests, f...Continue Reading

Software Mentioned

Statistical Package for the Social Sciences ( SPSS

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