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Journal of Dental Research
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Histopathology of the Initial Lesion of the Root Surface: an in vitro Study

P. Phankosol

Department of Removable Prosthodontics

R.L. Ettinger

Department of Removable Prosthodontics, Dows Institute for Dental Research, College of Dentistry, The University of Iowa, Iowa City, Iowa 52242

M.J. Hicks

Dental Research Unit & Department of Growth and Development, School of Dentistry, University of Colorado, Health Sciences Center, Denver, Colorado 80262

J.S. Wefel

Dows Institute for Dental Research, College of Dentistry, The University of Iowa, Iowa City, Iowa 52242

An acidified gel system was used to produce artificial caries lesions in root surfaces. Radiopaque surface layers were found with 47% of the lesions. Demineralized bodies of the lesion and mineralized zones of banding were seen in all lesions when examined by microradiography. Cementum and dentin seemed to respond to the acid attack in a similar manner. Although artificial root lesions did not simulate natural root caries entirely, the acidified gel system resulted in a reproducible method that might give insight into initial lesion formation on root surfaces. This technique may be used for studying the physico-chemical process involved in the demineralization of root surfaces and for testing the effects of various agents in the prevention of root caries.

Journal of Dental Research, Vol. 64, No. 5, 804-809 (1985)
DOI: 10.1177/00220345850640050401
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