title: Clinical evaluation of a polyacid-modified resin composite (compomer).
abstract: The purpose of this study was to evaluate the clinical performance over 1 year of the proprietary polyacid-modified composite resin Dyract (DeTrey Dentsply). Forty-one restorations (five in interproximal anterior cavities, 36 in noncarious cervical cavities) were placed following the manufacturer's instructions. After 1 year, one of the cervical restorations had been lost, and eight restorations showed some degree of marginal discoloration. Overall, Dyract showed mixed results as a tooth-colored restorative material in nonstress-bearing areas. The long-term clinical performance and reasons for incipient marginal discoloration need further investigation.
authors.affiliation: University of Melbourne, School of Dental Science, Faculty of Medicine, Dentistry and Health Sciences, Australia.
authors.forename: M J
authors.initials: MJ
authors.lastname: Tyas
mesh_terms: D000368:Aged; D020770:Compomers; D003188:Composite Resins / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D001840:Dental Bonding; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D004341:Drug Evaluation; D005500:Follow-Up Studies; D006801:Humans; D008689:Methacrylates / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D008875:Middle Aged; D017640:Silicates / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors; D014075:Tooth Discoloration / Q000453:epidemiology
chemical_list: D020770:Compomers; D003188:Composite Resins; C088486:Dyract; D008689:Methacrylates; D017640:Silicates