An experimental study on the penetration abilities of resin infiltration into proximal caries lesions in primary molars

• Published in: Zhonghua kouqiang yixue zazhi Vol. 47; no. 11; p. 684
• Main Authors: Liu, Yong-Hong, Ge, Li-Hong, Zhang, Zhi-Yong, Chi, Xue-Qian, Hou, Feng-Chun, Chen, Hui-Zhen
• Format: Journal Article
• Language: Chinese
• Published: China 01.11.2012
• Subjects: Acid Etching, Dental - methods; Composite Resins - chemistry; Dental Caries - pathology; Dental Caries - therapy; Dental Cements - chemistry; Dental Enamel - pathology; Dental Enamel Permeability; Humans; Hydrochloric Acid - pharmacology; Molar - pathology; Surface Properties; Tooth, Deciduous - pathology
• ISSN: 1002-0098
• DOI: 10.3760/cma.j.issn.1002-0098.2012.11.011

To compare the penetration abilities of resin infiltration into proximal lesions in primary molars with those of adhesive in vitro. Thirty-two extracted or exfoliated primary molars showing proximal white spot lesions were selected. Roots of the teeth were removed, and the crowns were cut across the white spot lesions perpendicular to the surface. Cut surfaces were examined (by stereo microscopy) and classified with respect to histological lesion extension (C1-C4): lesions confined to the outer half on enamel (C1), lesions confined to the inner half on enamel (C2), lesions confined to the outer half on dentin (C3), lesions extending into the inner half of dentin (C4). Corresponding lesion halves were etched for 120 s with 15% hydrochloric acid gel and were subsequently treated with either adhesive or resin infiltration. Specimens were observed with laser scanning confocal microscope (LSCM) in dual fluorescence mode. In confocal microscopic images, lesion depth and penetration depth of the resin infiltration o