title: [Re-restoration decisions].
abstract: OBJECTIVE
  In this study an attempt was made to explain some of the interobserver variation in re-restoration decision making using.
  
  
  METHODS
  A simplified re-restoration case was shown to 22 dentists who were asked what treatment decision they would make, and what factors would play a role in their decision. The treatment decisions were compared to the outcomes of a knowledge-system on re-restoration decision making.
  
  
  RESULTS
  The dentists unanimously selected re-restoration as the treatment alternative. Half of the dentists preferred amalgam, and the other half chose composite as restorative material. This variation could be explained almost fully by the dentists' weighs on the factors 'tissue loss during preparation', 'restoration and preservation of the chewing function' and 'prognosis and durability of the restoration'. The knowledge system indicated that more than 80% of the dentists actually should have selected composite resin for a restorative material.
  
  
  CONCLUSIONS
  It was concluded that the availability of knowledge and its application can explain variation in re-restoration decisions. Knowledge systems can be used in designing practice guidelines.
authors.affiliation: Vakgroep Cariologie en Endodontologie, Katholieke Universiteit Nijmegen.
authors.forename: E H
authors.initials: EH
authors.lastname: Verdonschot
authors.forename: A J
authors.initials: AJ
authors.lastname: Plasschaert
authors.forename: P F
authors.initials: PF
authors.lastname: de Vries Robbé
mesh_terms: D003657:Decision Making; D003661:Decision Support Techniques; D003793:Dental Restoration, Permanent / Q000379:methods*; D003815:Dentists / Q000523:psychology; D006801:Humans; D019359:Knowledge; D015588:Observer Variation; D017410:Practice Guidelines as Topic; D019239:Practice Patterns, Dentists'
vernacular_title: Re-restauratiebeslissingen.