광학적 치아우식활성 검사법의신뢰도에 관한 연구
A study on the reliability of the optical caries activity test
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초록
본 연구는 LED 형광법을 이용하여 각 개인의 우식활성도를 측정할 수 있는지를 규명하기 위해 6.7세의 아동 55명을 대상으로 치아의 순면과 협면에 LED 광을 조사하고 특수 필터를 사용하여 초기 치아우식증이 관찰되는 치아의 수와 우식의 크기, 위치 등을 기록하고, 이와 같은 초기 치아우식증의 수를 측정하는 우식활성검사법과 기존의 우식활성도 측정방법인 dDfFtT rate, Streptococcus mutans colony count와 상관성을 비교, 평가하고, LED 형광법을 이용한 우식활성검사의 특이도, 민감도, 진단력을 평가하였다 1. LED 형광법을 이용한 우식활성도 측정법은 기존의 Streptococcus mutans colony count 검사법과 비교적 높은 상관관계를 보였다(Υ=0.43, P<0.05). 2. 육안검사를 기준검사법으로 하였을 때, LED의 특이도, 민감도, 진단력은 각각 100%, 76.1%, 100%이었다. 3. dDfFtT를 기준검사법으로 하였을 때, LED의 특이도, 민감도, 진단력은 각각 88.9%, 47.8%, 95.7%이었다. 4. S. mutans 측정법을 기준검사법으로 하였을 때, LED의 특이도, 민감도, 진단력은 각각 100%, 58.7%, 100% 이었다. 이상의 결과를 종합하여 볼 때 LED 광중합기를 이용한 광학적 치아우식활성 검사법은 미생물학적 치아우식활성 검사법과 비교하여 유의한 상관관계를 보여 임상에서 활용 가능성이 클 것으로 사료된다.
Abstract
The purpose of this study was to evaluate the specificity, sensitivity, and diagnostic power of caries activity test using LED fluorescence. The subjects of this study were 55 children of 6.7 years old. LED light were irradiated to labial or buccal surface of all teeth. Fluorescence from initial carious lesion of teeth illuminated by an LED light was observed through barrier filter and the number of teeth showing lesion, size and position of lesion were counted. Streptococcus mutans colony counting and dDfFtT rate test were also done and their correlation was compared. And then specificity, sensitivity, diagnostic power of optical caries activity test using LED light were evaluated. 1. There was positive correlation(Υ=0.43) between LED fluorescence test and Streptococcus mutans count(P<0.05). 2. When visual examination was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 100%, 76.1%, and 100%. 3. When dDfFtT rate was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 88.9%, 47.8%, and 95.7%. 4. When S. mutans colony counting was defined to standard testing method, the specificity, sensitivity, diagnostic power of LED fluorescence test were 100%, 58.7%, and 100%. Considering the above results, optical caries activity test using LED light could be regarded as a practical method because of its close relationship with microbiological caries activity test.
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