휴대용 QLF를 이용한 치아검사의 효용성 평가

Abstract

Purpose: The aim of this study was to evaluate applicability of Qraycam device in tooth examination for enhancing the deteting caries and filling body detection. Method: Fifty two subjects aged 25 to 34 were recruited for tooth examination. Two examiners(1 epidemiologic expert and 1 non expert) carried out visual tooth examination using only dental operating light, dental mirror and air-drying without dental explorer. And pictures or movies on every tooth surfaces were taken under visual ray and 405 nm blue ray respectively using Qraycam. Two examiner performed tooth examination from movies or images taken by Qraycam after more than 7 days from visual examination. Agreement for two examiner and Receiver Operating Characteristics (ROC) (AUC) were evaluated with gold standard derived from visual and Qraycam examination. Results: 1. The results of visual examination, visible ray image examination and 405 nm blue ray image examination showed very good kappa agreement with gold standard in both examiners. 2. 405 nm blue ray image examination showed higher kappa agreement than visible ray image examination, and that was similar to visual examination. 3. Accuracy of detecting caries was enhanced by using 405 nm blue ray image from Qraycam. 4. Accuracy of detecting filling body of 405 nm blue ray image examination was almost equal to visual examination. Conclusion: Tooth examination with Qraycam images revealed high agreement with gold standard and showed accuracy for detecting caries and filling body. Therefore, Qraycam would enhance the quality of oral epidemiologic survey including tooth examination and is expected to save cost and time for survey.