title: Comparison of apical leakage in teeth obturated with a polyamide varnish or zinc oxide and eugenol cement using lateral condensation.
abstract: The sealing ability of copal varnish has been investigated when used as an adjunct in restorative procedures, retrofilling procedures, and dontic obturation procedures. Barrier, a polyamide-type polymer cavity varnish, has been compared with copal varnishes in restorative dentistry. This investigation compared the apical sealing properties of a zinc oxide and eugenol sealer (Roth) with a polyamide varnish (Barrier). Twenty-four teeth were instrumented and divided into two groups, one obturated with gutta-percha and Roth sealer and one with gutta-percha and Barrier, using submersion in methylene blue dye to demonstrate apical leakage. Roth sealer exhibited less dye penetration than Barrier when used as an endodontic sealant (p < 0.02).
authors.affiliation: U.S. Army Dental Activity, Ft. Hood, TX.
authors.forename: D W
authors.initials: DW
authors.lastname: Smith
authors.forename: M
authors.initials: M
authors.lastname: Wong
mesh_terms: D003736:Dental Cavity Lining; D003763:Dental Leakage; D003764:Dental Materials; D006801:Humans; D009757:Nylons; D012389:Root Canal Obturation / Q000379:methods*; D014092:Tooth Root; D015035:Zinc Oxide-Eugenol Cement
chemical_list: C077038:Barrier (varnish); D003764:Dental Materials; D009757:Nylons; D015035:Zinc Oxide-Eugenol Cement