Related Experiment Video
Updated: Aug 19, 2026

09:44
Oral Biofilm Analysis of Palatal Expanders by Fluorescence In-Situ Hybridization and Confocal Laser Scanning Microscopy
Published on: October 20, 2011
Deep bacterial penetration of early proximal caries lesions in young human premolars
ASDC Journal of Dentistry for Children
|March 1, 1985
Abstract:
The aim of the study was to assess the frequency and extent of bacterial invasion in proximal small caries lesions of young human premolars. The teeth were fractured longitudinally through the lesion and examined under a scanning electron microscope. In two out of twelve teeth with incipient caries and without any cavitation, bacteria could be seen in both enamel and dentin; in one, penetrating the dentin to a depth of 1.5 mm from the dentinoenamel junction. In both lesions the chaulkiness extended to about half of the enamel thickness.

