title: Effect of selected literature on dentists' decisions to remove asymptomatic, impacted lower third molars.
abstract: The aim of this study was to assess the effect of studying selected literature on dentists' decisions to remove asymptomatic, impacted lower third molars. A pre-test-post-test control group design was used. Given 36 patient cases, two groups of 16 general dental practitioners each were asked to assess the need for removal of asymptomatic impacted lower third molars. The cases were classified by three parameters: 'position of the third molar', 'impaction type', and 'patient age'. After studying selected literature on this subject by the intervention group, both groups were asked to assess the same cases again. Frequencies of decisions to remove the third molars were calculated. For each participant, tables were composed by crosstabulating the indication to remove a third molar with each of the three parameters. T-tests were used to test the significance of the difference between pre-test and post-test decisions. The overall number of indications to remove asymptomatic, impacted lower third molars decreased by 37% in the intervention group. In the control group, the difference between pre- and post-test was not statistically significant. It was concluded that the provision of selected literature significantly influences treatment decision making by dentists in a third molar decision task.
authors.affiliation: University Medical Center, Department of Cariology and Endodontology, College of Dental Science, Nijmegen, The Netherlands. w.vandersanden@dent.kun.nl
authors.forename: W J M
authors.initials: WJ
authors.lastname: van der Sanden
authors.forename: Dirk G
authors.initials: DG
authors.lastname: Mettes
authors.forename: Alphons J M
authors.initials: AJ
authors.lastname: Plasschaert
authors.forename: Richard P G M
authors.initials: RP
authors.lastname: Grol
authors.forename: Martin A
authors.initials: MA
authors.lastname: van't Hof
authors.forename: Kerstin
authors.initials: K
authors.lastname: Knutsson
authors.forename: Emiel H
authors.initials: EH
authors.lastname: Verdonschot
mesh_terms: D000328:Adult; D016001:Confidence Intervals; D003657:Decision Making; D003815:Dentists; D005260:Female; D005792:General Practice, Dental; D006801:Humans; D016239:MEDLINE; D008297:Male; D016555:Matched-Pair Analysis; D008875:Middle Aged; D008964:Molar, Third / Q000601:surgery*; D020380:Needs Assessment; D013223:Statistics as Topic; D014081:Tooth Extraction; D014095:Tooth, Impacted / Q000145:classification / Q000601:surgery*