Comparison of apical leakage in teeth obturated with a polyamide varnish or zinc oxide and eugenol cement using lateral condensation.
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).
Smith
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DW
U.S. Army Dental Activity, Ft. Hood, TX.
Wong
M
M
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
C077038:Barrier (varnish); D003764:Dental Materials; D009757:Nylons; D015035:Zinc Oxide-Eugenol Cement