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Development of an oral health-related quality of life questionnaire on neurosensory disturbances after orthognathic surgery – a pilot study

Abstract Objective Development of a new questionnaire, Oral Health-Related Quality of Life – Neurosensory Disturbances after Orthognathic Surgery (OHRQL-NDO), designed to measure the effects of neurosensory disturbance (NSD) on patients’ oral health-related quality of life (OHRQL) and to evaluate reliability and validity of this questionnaire. Materials and methods A questionnaire including 11 items was constructed. Thirty patients with NSD affecting the lower lip and/or chin following orthognathic surgery were included. Convergent validity was assessed by comparing OHRQL-NDO with OHIP-14 and two global questions. Test-retest reliability was assessed by asking the patients to complete OHRQL-NDO at two different occasions with an interval of two to three weeks. Results The internal consistency, measured with Cronbach’s alpha, was 0.84. The test-retest reliability, measured with ICC, was 0.89 (95% CI 0.77–0.95). The correlation between the mean sum score for the OHRQL-NDO and the mean sum score for the OHIP-14 was r = 0.75, using Pearson correlation coefficient. The correlations between the mean total score for the OHRQL-NDO and the global questions 1 and 2 were r = 0.74 and r = 0.72, respectively. Conclusions The current instrument OHRQL-NDO is a promising test, but needs further development to better capture the different aspects of OHRQL. Further tests of the questionnaire must follow in other samples to finalize the instrument.