title: In vitro comparison of coronal microleakage between Resilon alone and gutta-percha with a glass-ionomer intraorifice barrier using a fluid filtration model.
abstract: The prevention and control of coronal microleakage is critical for successful endodontic outcomes. The purpose of this study was to compare coronal microleakage between Resilon alone and gutta-percha with a glass ionomer intraorifice barrier using a fluid filtration model. Thirty-four extracted human teeth were decoronated, prepared to a standardized length of 16 mm, and instrumented to a .06 taper ISO size 40. After removal of controls, the remaining roots were randomly divided into two equal groups of 15 and obturated with either Resilon alone or gutta-percha with a 2-mm glass-ionomer intraorifice barrier. After set of the sealers, the teeth were evaluated for microleakage using a fluid filtration model. A Student t test found significantly less leakage for the gutta-percha/glass-ionomer intraorifice barrier group than the Resilon alone group (p = 0.008).
authors.affiliation: Naval Postgraduate Dental School, Bethesda, Maryland, USA.
authors.forename: Ryan M
authors.initials: RM
authors.lastname: Jack
authors.forename: Gary G
authors.initials: GG
authors.lastname: Goodell
mesh_terms: D003763:Dental Leakage / Q000209:etiology*; D005374:Filtration; D005899:Glass Ionomer Cements; D006171:Gutta-Percha / Q000009:adverse effects; D006801:Humans; D008956:Models, Chemical; D012387:Root Canal Filling Materials / Q000009:adverse effects*
chemical_list: D005899:Glass Ionomer Cements; D012387:Root Canal Filling Materials; C486892:resilon sealer; D006171:Gutta-Percha