Occlusal tooth surface treatment plans and their possible effects on oral health care costs.
OBJECTIVE
The aim of this study was to evaluate decision making with regard to detection and treatment of carious lesions on occlusal tooth surfaces and to evaluate the possible costs related to the different treatment plans of a group of clinicians in private practice.


METHODS
Forty extracted permanent teeth with no fillings or macroscopic carious cavitations were selected and radiographed, using a standard method similar to bitewing and then mounted in two models. A sample of 130 clinicians in private practice in Piracicaba, Brazil were asked to carry out combined visual-radiographic caries examination of the occlusal surfaces and to recommend possible treatment plans for each surface. Teeth were sectioned bucco-lingually and caries was assessed using a stereomicroscope and classified as either enamel or dentine lesions. The costs of treatments suggested by each examiner were calculated, using a fee scale reported by the Brazilian Federal Council of Dentistry.


RESULTS
Most teeth (53.7%) that were found to be sound on histological examination were considered to have enamel lesions. In 85.7% of these cases, the clinicians recommended restorative treatments. There was about 14-fold difference among clinicians concerning the costs related to decision making.


CONCLUSIONS
Not only did the clinicians overestimate the presence and depth of carious lesions, but they also tended to treat enamel lesions using invasive therapeutic procedures. Great disparities were observed with regard to treatment costs related to decision making. Assuming an in vivo situation, the clinicians may be performing overtreatments and consequently interfering in the quality of patients' oral health.
Faculty of Dentistry of Piracicaba, Department of Community Dentistry, State University of Campinas, Piracicaba, SP, 13414-903, Brazil. mialhe@fop.unicamp.br
Fábio Luiz
FL
Mialhe
Antonio Carlos
AC
Pereira
Marcelo de Castro
Mde C
Meneghim
Elaine Pereira da Silva
EP
Tagliaferro
Vanessa
V
Pardi
D000328:Adult; D003657:Decision Making; D003729:Dental Care / Q000191:economics* / Q000379:methods; D003731:Dental Caries / Q000191:economics / Q000473:pathology / Q000628:therapy*; D003743:Dental Enamel / Q000473:pathology; D003793:Dental Restoration, Permanent / Q000191:economics* / Q000592:standards; D003804:Dentin / Q000473:pathology; D019229:Dentition, Permanent; D017048:Health Care Costs / Q000592:standards*; D006801:Humans; D008875:Middle Aged; D015588:Observer Variation; D019239:Practice Patterns, Dentists' / Q000191:economics / Q000592:standards*; D015203:Reproducibility of Results