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Journal of Dental Research
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Biomaterials & Bioengineering

Improved Resin Infiltration of Natural Caries Lesions

H. Meyer-Lueckel and S. Paris*

Department of Operative Dentistry and Periodontology, CharitéCentrum for Dental Medicine, Charité-Universitätsmedizin Berlin and Clinic for Conservative Dentistry and Periodontology, School for Dental Medicine, Christian-Albrechts-University Kiel, Arnold-Heller-Str. 3, house 26, 24105 Kiel, Germany

Correspondence: * corresponding author, paris{at}konspar.uni-kiel.de

In artificial lesions, improved penetration and the caries-inhibiting properties of infiltrating resins could be observed with increasing penetration coefficients (PCs). The aim of the present study was to compare the penetration abilities of an experimental ‘infiltrant’ into natural lesions with those of an adhesive in vitro. Extracted human molars and premolars showing proximal white spots were cut across the lesions perpendicular to the surface. Corresponding lesion halves were etched for 120 sec with 15% hydrochloric acid gel and were subsequently treated with either an adhesive (PC: 31 cm/sec) or an infiltrant (PC: 273 cm/sec). Specimens were observed by confocal microscopy and transverse microradiography. Penetration depths of the adhesive were significantly lower compared with those of the infiltrant (p < 0.001; Wilcoxon). It can be concluded that resins with higher PCs (infiltrants) show superior ability to penetrate natural lesions compared with resins with lower PCs.

Key Words: caries • infiltration • non-operative treatment • hydrochloric acid • adhesive

Journal of Dental Research, Vol. 87, No. 12, 1112-1116 (2008)
DOI: 10.1177/154405910808701201
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