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레진 침투법 후 인공 법랑질 백색 병소의 색과 경도 변화 비교

Color and hardness changes in artificial white spot lesions after resin infiltration

대한치과보존학회지 2012년 37권 2호 p.90 ~ 95
김지훈, 손호현, 장주혜,
소속 상세정보
김지훈 ( Kim Ji-Hoon ) - 서울대학교 치의학대학원 치의학과
손호현 ( Son Ho-Hyun ) - 서울대학교 치의학대학원 치과보존학교실
장주혜 ( Chang Ju-Hea ) - 서울대학교 치과병원 장애인구강진료실

Abstract


Objectives: The purpose of this study was to determine the effect of resin infiltration technique on color and surface hardness of white spot lesion (WSL) with various degrees of demineralization.

Materials and Methods: Ten human upper premolars were cut and divided into quarters with a 3 × 4 mm window on the enamel surface. Each specimens were separated into four groups (n = 10) and immersed in demineralization solution to create WSL: control, no treatment (baseline); 12 h, 12 hr demineralization; 24 h, 24 hr demineralization; 48 h, 48 hr demineralization. Resin infiltration was performed to the specimens using Icon (DMG). CIEL*a*b* color parameters of the enamel-dentin complex were determined using a spectroradiometer at baseline, after caries formation and after resin infiltration. Surface hardness was measured by Vickers Micro Hardness Tester (Shimadzu, HMV-2). The differences in color and hardness among the groups were analyzed with ANOVA followed by Tukey test.

Results: Resin infiltration induced color changes and increased the hardness of demineralized enamel. After resin infiltration, there was no difference in color change (ΔE*) or microhardness among the groups (p < 0.05).

Conclusion: There was no difference in the effect of resin infiltration on color and hardness among groups with different extents of demineralization.

키워드

Color measurement; Microhardness; Resin infiltration; White spot lesion

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