Dental Health State Utility Values Associated with Compromised First Permanent Molar Teeth
Abstract Background The aim of this study was to generate utility data to support economic evaluation of interventions for compromised first permanent molars (cFPMs) and to assess the reliability of responses using alternative elicitation methods.MethodsFifty adult respondents attending a Paediatric Dentistry department with their child completed a questionnaire to elicit utility values for eight clinical treatment scenarios for a compromised first permanent molar tooth (cFPM). These scenarios included restorations, prosthetic replacements or presence of a gap (missing tooth). The question formats included a ranking, a visual analogue scale (VAS) and a time trade off (TTO) exercise.ResultsMean utility values for each health state were generated using the VAS and TTO data. A white filling generated the highest utility (0.786 [VAS], 0.763 [TTO]) and was ranked as the most favourable treatment option. An open gap generated the lowest utility (0.344 [VAS], 0.523 [TTO]). A closed gap (0.6392 [VAS]) was rated below various tooth restorations but above a traditional bridge (0.5944 [VAS]) or denture (0.4312 [VAS]), according to mean VAS scores. VAS responses showed better agreement (kappa=0.48) with the ranking exercise compared to TTO responses (kappa= -0.003).ConclusionsPlausible and broadly consistent values were generated with VAS and TTO, but TTO data seemed to be less reliable. These data allow comparison of treatment options involving extraction and gap closure or restoration of cFPMs using a single measure of patient preference.