Modification of surface pretreatment of white spot lesions to improve the safety and efficacy of resin infiltration
임현경, 민지현, 권호근, 김백일,
소속 상세정보
임현경 ( Yim Hyun-Kyung ) - Yonsei University College of Dentistry Department of Preventive Dentistry & Public Oral Health
민지현 ( Min Ji-Hyun ) - Yonsei University College of Dentistry Department of Preventive Dentistry & Public Oral Health
권호근 ( Kwon Ho-Keun ) - Yonsei University College of Dentistry Department of Preventive Dentistry & Public Oral Health
김백일 ( Kim Baek-Il ) - Yonsei University College of Dentistry Department of Preventive Dentistry & Public Oral Health
KMID : 0361920140440040195
Abstract
Objective: A low-viscosity resin (infiltrant) was used to inhibit the progression of white spot lesions (WSLs) and resolve associated esthetic issues. An alternative pretreatment was explored to increase the pore volume of the surface layer of the WSLs. Also, the penetration effects of the infiltrant were evaluated for various pretreatments.
Methods: Sixty two artificial lesions were fabricated on bovine teeth. As a positive control, 15% HCl gel was applied for 120 seconds. Further, 37% H3PO4 gel was applied for 30 seconds using three methods. The samples were divided as follows: H3PO4 only group, H3PO4 sponge group, and H3PO4 brush group. The acid was gently rubbed with the applicators (i.e., a sponge or brush) throughout the application time. To compare the effects of resin infiltration, twenty paired halves of specimens were treated with an infiltrant (ICON®).
Results: Thicknesses of the removed surface layers and infiltrated areas were evaluated by confocal laser scanning microscope. The positive control and the 37% H3PO4 brush group failed to show significant differences in the removed thickness (p > 0.05); however, the mean percentage of the infiltrated area was higher in the 37% H3PO4 brush group (84.13 ± 7.58%) than the positive control (63.51 ± 7.62%, p < 0.001). Scanning electron microscope observations indicate higher pore volumes for the 37% H3PO4 brush group than for the positive control.
Conclusions: Application of 37% H3PO4 with a brush for 30 seconds increased the pore volume of WSL surface layers and the percentage of infiltrated areas in comparison to the use of 15% HCl for 120 seconds.
키워드
White spot lesions (WSLs); Resin infiltration; Surface layer; 37% Phosphoric acid; 15% Hydrochloric acid
원문 및 링크아웃 정보
등재저널 정보