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Resin Infiltration of Natural Caries Lesions

Dept. of Operative Dentistry and Periodontology, University School of Dental Medicine, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Assmannshauserstr. 4-6, 14197 Berlin, Germany

View larger version (60K): [in this window] [in a new window]   Figure 1. Representative images of a lesion treated with the adhesive. (A) Clinical aspect of the mesial surface of a human molar showing a white-spot lesion (dotted line). The lesion was cut in two halves along the dashed line. (B) Aspect of the cut surfaces of the same enamel lesion. (C–E) Confocal microscopic images of resin-infiltrated lesions (E, sound enamel; SL, surface layer; LB, lesion body; R, penetrated resin; S, lesion surface). (C) Deep resin penetration can be observed after etching with HCl. (D) The surface layer of this H3PO4-etched caries lesion was not eroded completely. Therefore, only superficial resin penetration occurred, as indicated by a fine rim of red fluorescence at the tooth surface. (E) Magnified image of an HCl-etched lesion (40x objective). The outermost 50–100 µm of prism cores are filled with resin. In non-infiltrated parts of the lesion body, the highly porous prism centers show green fluorescence.

View larger version (18K): [in this window] [in a new window]   Figure 2. Mean penetration depths of resin for various pre-treatments and histological lesion extensions (box and whisker plots with quartiles and medians; n = 10 per group). Statistically significant differences between groups are indicated with asterisks (*p < 0.05; **p < 0.01; ***p < 0.001; Mann-Whitney). Abbreviations: C1, caries extension into the outer half of enamel; C2, caries extension into the inner half of enamel; C3, caries extension into the outer half of dentin.

Journal of Dental Research, Vol. 86, No. 7, 662-666 (2007)
DOI: 10.1177/154405910708600715


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