title: Clinical performance of preventive resin restorations placed in a hospital environment.
abstract: This study was conducted retrospectively to evaluate the clinical performance of preventive resin restorations. Five hundred thirty-two restorations in 351 patients had been in the mouth for a mean of 16.5 %/- 7.6 months. The clinical performance was determined with a modified version of the US Public Health Service rating system. In 79.9% of the restorations, the marginal discoloration was rated as Alfa (no discoloration), while only 0.9% were scored as Charlie (discoloration penetrating in a pulpal direction). The marginal adaptation was rated as Oscar (fully sealed) in 28.4% of restorations; in only 0.4% of restorations, rated as Charlie or Delta, was the dentin or base exposed. In 98.3% of the restorations evaluated, the anatomic form was rated as Alfa (continuous with existing anatomic form). Recurrent caries was associated with 2.3% of the restorations. Chi-squared tests failed to reveal any statistically significant relationships between the clinical performance of the restorations and the length of time in the mouth.
authors.affiliation: Department of Children's Dentistry and Orthodontics, University of Hong Kong, Prince Philip Dental Hospital, Hong Kong.
authors.forename: N M
authors.initials: NM
authors.lastname: King
authors.forename: L K
authors.initials: LK
authors.lastname: Yung
authors.forename: C J
authors.initials: CJ
authors.lastname: Holmgren
mesh_terms: D000704:Analysis of Variance; D016009:Chi-Square Distribution; D003188:Composite Resins; D003731:Dental Caries / Q000517:prevention & control; D003736:Dental Cavity Lining; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D005069:Evaluation Studies as Topic; D005899:Glass Ionomer Cements; D006801:Humans; D008963:Molar; D017063:Outcome Assessment, Health Care; D010895:Pit and Fissure Sealants; D015203:Reproducibility of Results; D012189:Retrospective Studies; D018709:Statistics, Nonparametric
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants