title: Clinical evaluation of a polyacid-modified resin composite (Dyract) in class III cavities: three-year results.
abstract: This study evaluated the three-year clinical performance of a polyacid-modified resin composite material, Dyract (DeTrey/Dentsply, Konstanz, Germany), in Class III cavities. Sixty-two Class III cavities in 30 patients were restored with Dyract. Restorations were clinically evaluated at baseline, one-, two- and three-year recalls according to the modified Ryge criteria by two experienced, calibrated examiners. After three years, the retention rate was 96.7%. At the one-year interval, one restoration had to be replaced due to sensitivity. At the two-year recall, one restoration, with a caries lesion adjacent to its margin, was clinically unacceptable and had to be replaced. Except for these two restorations, all other restorations were clinically acceptable in regard to color match, marginal discoloration, wear or loss of anatomical form, caries, marginal adaptation and surface texture after three years. At the end of three years, marginal discoloration was statistically significant (p=0.017) but did not require replacement of any of the restorations. Dyract exhibited significant marginal discoloration after three-year clinical performance in Class III cavities.
authors.affiliation: Department of Conservative Dentistry, The University of Istanbul, Turkey. demirci.md@superonline.com
authors.forename: Mustafa
authors.initials: M
authors.lastname: Demirci
authors.forename: Handan
authors.initials: H
authors.lastname: Ersev
authors.forename: Mete
authors.initials: M
authors.lastname: Uçok
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003116:Color; D020770:Compomers / Q000737:chemistry*; D001840:Dental Bonding; D003731:Dental Caries / Q000145:classification / Q000628:therapy*; D003737:Dental Cavity Preparation / Q000379:methods; D018772:Dental Marginal Adaptation; D019554:Dental Restoration Wear / Q000145:classification; D003793:Dental Restoration, Permanent / Q000145:classification* / Q000379:methods; D003807:Dentin Sensitivity / Q000209:etiology; D005500:Follow-Up Studies; D006801:Humans; D016555:Matched-Pair Analysis; D008689:Methacrylates / Q000737:chemistry*; D008875:Middle Aged; D012008:Recurrence; D017640:Silicates / Q000737:chemistry*; D013223:Statistics as Topic; D018709:Statistics, Nonparametric; D013499:Surface Properties
chemical_list: D020770:Compomers; C088486:Dyract; D008689:Methacrylates; D017640:Silicates