title: Clinical evaluation of Dyract in primary molars: 3-year results.
abstract: OBJECTIVE
  To evaluate the 3-year clinical performance of Dyract in primary molars.
  
  
  METHODS
  In 55 children (aged 4-9 years) 91 restorations were placed and 76 were available for evaluation after 2 years. After 3 years, 40 teeth were exfoliated leaving 37 restorations for evaluation.
  
  
  RESULTS
  During the entire study, four restorations failed and had to be replaced. One restoration fractured after 6 months and another after 1 year. Two other restorations were completely lost between the second and third year's evaluation. Furthermore, three restorations showed minimal recurrent caries, which did not need additional treatment. Wear of the restorations was considerable. However, this was also true for the point of reference for the wear measurement on the primary molars. The excellent handling characteristics and the low failure rate during the 3-year study suggest that this compomer is a reliable restorative material in primary molars.
authors.affiliation: Department of Cariology and Endodontology, University of Nijmegen, The Netherlands.
authors.forename: J J
authors.initials: JJ
authors.lastname: Roeters
authors.forename: F
authors.initials: F
authors.lastname: Frankenmolen
authors.forename: R C
authors.initials: RC
authors.lastname: Burgersdijk
authors.forename: T C
authors.initials: TC
authors.lastname: Peters
mesh_terms: D002648:Child; D002675:Child, Preschool; D020770:Compomers; D003731:Dental Caries / Q000209:etiology; D018772:Dental Marginal Adaptation; D019554:Dental Restoration Wear; D003793:Dental Restoration, Permanent / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008689:Methacrylates; D008963:Molar; D010512:Periodontal Index; D017797:Prosthesis Coloring; D017640:Silicates; D013997:Time Factors; D014094:Tooth, Deciduous
chemical_list: D020770:Compomers; C088486:Dyract; D008689:Methacrylates; D017640:Silicates