title: Sealing capacity in vitro of thermoplasticized gutta-percha with a solid core endodontic filling technique.
abstract: This study assessed the sealing capacity of two endodontic gutta-percha filling techniques. Thirty-four single-rooted fully developed teeth were endodontically accessed, instrumented and randomly divided into two experimental groups (n = 12) and two control groups (n = 5). In Group A, root canals were obturated using a solid core thermoplastic technique (Densfil), in Group B and Group C (negative control) canals were obturated with laterally condensed gutta-percha, and in Group D (positive control) canals were left unobturated. AH-26 was used as the sealer. Two days later, the teeth were conventionally prepared for testing apical and coronal leakage, immersed in india ink for 5 days and subsequently cleared. The linear coronal and apical extent of dye penetration was measured under a light dissecting microscope. The mean apical leakage for Group A was 1.39 mm, and for Group B 2.76 mm, whereas the mean coronal leakage for Group A was 2.87 mm, and for Group B 4.03 mm. The differences between the groups were not statistically significant (P > 0.05).
authors.affiliation: School of Dentistry, Faculty of Medical Sciences, University of The West Indies, Mount Hope, Trinidad & Tobago.
authors.forename: K S
authors.initials: KS
authors.lastname: Valli
authors.forename: R N
authors.initials: RN
authors.lastname: Rafeek
authors.forename: R T
authors.initials: RT
authors.lastname: Walker
mesh_terms: D001729:Bismuth; D003763:Dental Leakage; D004338:Drug Combinations; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D066298:In Vitro Techniques; D007180:Incisor; D008437:Maxilla; D008709:Methenamine; D011897:Random Allocation; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D012834:Silver; D014025:Titanium
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D008709:Methenamine; D001729:Bismuth