title: A survey of failure modes in composite resin restorations.
abstract: This study was undertaken as a first step in identifying opportunities to decrease the need for replacement of class 3, 4, and 5 composite resin restorations. Data regarding the reasons for original placement or replacement of a restoration, the age of restorations at the time of replacement, and patient/doctor factors that may be associated with a decision to place or replace a restoration were recorded by use of a cross-sectional survey. During a 2-week period 108 dentists recorded reasons for placing or replacing 1360 restorations. Of the 1360 restorations, 42.8% were classified as primary placement and 57.2% as replacement restorations. Of the primary placements 80% were categorized as being due to caries; 9.1% fracture of tooth; 8.4% other (erosion lesions were specified 94% of the time). By class, caries was the dominant cause for class 3 (96.2%); caries and other (erosion) for class 5 (77.3% and 16.4%); fracture of tooth and caries (48.9% and 40.2%) for class 4 restorations.
authors.affiliation: University of Tennessee-Memphis, College of Dentistry, Department of General Dentistry, USA.
authors.forename: W D
authors.initials: WD
authors.lastname: Browning
authors.forename: J B
authors.initials: JB
authors.lastname: Dennison
mesh_terms: D016009:Chi-Square Distribution; D003188:Composite Resins; D003731:Dental Caries; D018772:Dental Marginal Adaptation; D003774:Dental Plaque Index; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods / Q000706:statistics & numerical data*; D006801:Humans; D019239:Practice Patterns, Dentists'; D019233:Retreatment; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D003188:Composite Resins