title: Effect of 2% chlorhexidine gel as an intracanal medication on the apical seal of the root-canal system.
abstract: The purpose of this study was to determine what effect intracanal medications might have on the apical seal of the root-canal system. Forty-two teeth were cleaned and shaped in a crown-down manner to a size #50 K-file. The teeth were divided into three groups: (A) immediate obturation; (B) intracanal placement of calcium hydroxide placed for 14 days; and (C) 2% chlorhexidine gel placed for 14 days. After 14 days, these materials were removed using copious irrigation and obturation was completed on groups B and C. Obturation was performed using the continuous wave of condensation technique using AH Plus sealer in all groups. Leakage was evaluated 60 days after obturation by using a fluid-filtration device. Using the one-way ANOVA test, there was no statistically significant difference in leakage between the three groups. Under the conditions of this study, 2% chlorhexidine gel and calcium hydroxide paste did not adversely affect the apical seal of the root-canal system.
authors.affiliation: Baumholder Dental Clinic, Baumholder Germany.
authors.forename: Rolf M W
authors.initials: RM
authors.lastname: Wuerch
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Apicella
authors.forename: Pete
authors.initials: P
authors.lastname: Mines
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Yancich
authors.forename: David H
authors.initials: DH
authors.lastname: Pashley
mesh_terms: D000704:Analysis of Variance; D002126:Calcium Hydroxide / Q000494:pharmacology; D002710:Chlorhexidine / Q000494:pharmacology*; D003763:Dental Leakage / Q000517:prevention & control*; D004853:Epoxy Resins; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012389:Root Canal Obturation; D019227:Tooth Apex / Q000187:drug effects*
chemical_list: D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C534916:epoxy resin-based root canal sealer; D002126:Calcium Hydroxide; D002710:Chlorhexidine