ArticleBMC oral health2025
Diagnostic accuracy of the Oral Aesthetic Subjective Impact Score (OASIS) questionnaire for orthodontic treatment need in Nepal: a hospital-based study.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe Oral Aesthetic Subjective Impact Score (OASIS) is a questionnaire used to assess self-perception of dental aesthetics. This study aimed to assess the diagnostic accuracy of this questionnaire in determining orthodontic treatment need in Nepali patients and to establish an appropriate cut-off score.
methodsThe original OASIS questionnaire was translated and adapted into the Nepali language. A total of 145 participants aged 14–19 years completed the Nepali version of OASIS (OASIS-N) questionnaire and rated their dental aesthetics on a Visual Analogue Scale. Orthodontic treatment need was then evaluated using the Index of Orthodontic Treatment Need-Dental Health Component (IOTN-DHC) and Aesthetic Component (IOTN-AC). Receiver Operating Characteristic (ROC) analysis was done to assess diagnostic accuracy of the OASIS-N against IOTN-DHC, and to identify the optimal cut-off score. Sensitivity, specificity, and predictive values were calculated for different cut-off scores.
resultsOASIS-N demonstrated high internal consistency (Cronbach’s α = 0.88) and good test–retest reliability (ICC = 0.77). It showed good diagnostic accuracy for detecting orthodontic treatment need, with an area under the ROC curve (AUC) of 0.945 (95% CI: 0.911–0.979). A cut-off score of 14.5 provided the best balance of sensitivity (90.4%) and specificity (75.6%) with substantial agreement with IOTN-DHC (κ = 0.660, p < 0.001).
conclusionsOASIS-N demonstrated good diagnostic accuracy for identifying orthodontic treatment need in Nepal. A cut-off score of 14.5 provided the best balance of sensitivity and specificity. Further multi-centre validation in community-based populations is recommended.
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