전치부의 발육 결함 및 교정 후 탈회 병소의 심미적 개선을 위한 resin infiltration

RESIN INFILTRATION FOR THE ESTHETIC IMPROVEMENT OF ANTERIOR TEETH WITH DEVELOPMENTAL DEFECTS AND POST-ORTHODONTIC DECALCIFICATION

어린이 영구전치의 법랑질 발육 결함이나 고정성 장치에 의한 교정치료 후 탈회 병소는 흔히 심미적 문제를 유발한다. 본 연구는 상악 전치부에 위 원인에 의한 탈회로 인하여 백반양 병소를 보이는 21명 어린이의 38개 치아를 대상으로, 최근 비침습적인 방법으로 소개된 resin infiltration 기법을 적용하고, 병소의 색조의 임상적 개선 효과를 비교, 분석하여 다음과 같은 결과를 얻었다. 1. 1주 후 색조가 개선된 병소는 발육 결함 병소의 25%, 교정 탈회 병소의 61%로 나타났다. 2. 발육 결함 병소의 40%, 교정치료 후 탈회 병소의 6%에서는 시술 전후의 색조변화를 관찰할 수 없었다. 3. 법랑질 발육결함 병소에서는 시술 직후 보다 1주 후에 더 많은 색조 변화를 관찰할 수 있었다. 결과적으로 일부 증례에서는 색조의 극적인 개선이 관찰되었으나, 또 일부 증례에서는 변화가 거의 나타나지 않았는데, 이는 병소 깊이의 차이에 기인한 것으로 사료되었다.

The prevalence of developmental defects of enamel and lesios by post-orthodontic decalcification has been reported with increasing frequency. Even though there have been increasing interests and clinical challenges in esthetic improvement of these lesions, few of studies were reported for using non-invasive approach which is a very significant matter for child and young adults. This study was conducted to assess clinical effect on the improvement in color of these lesions via resin infiltration method developed as minimum invasive technique for white spot. For the 38 maxillary anterior teeth with calcification problem, the changes in color between before- and after- infiltration treatment, were evaluated and summarized as following. 1. A week after infiltration, 25% of developmental defects and 61% of decalcification lesions were improved in color as the value of ${\Delta}E $ below 3.7. 2. 40% of the developmental defects and 6% of decalcification lesions showed no significant change. 3. The developmental defects showed more remarkable changes in color 1 week after infiltration rather than immediately after the treatment. From our study results, it is considered that the amount of color improvement depended on the depth of lesion. In other words, for the lesion having more depth than the depth infiltrant resin can penetrate into, infiltration treatment showed no significant effect. Therefore, for clinical indication of resin infiltration treatment, further research on precise measurement technique of lesion depth is strongly required.