PHOTOGRAPHIC AND DIRECT VISUAL RECORDING OF EXPERIMENTAL CARIES-LIKE CHANGES IN HUMAN DENTAL ENAMEL

Changes resembling early caries were induced in human subjects by mouthrinsing with sucrose solution while not toothbrushing. The appearances induced could be validly assessed according to a graded index (Caries Index) and with a high degree of repeatability and reliability by the use of controlled colour photographic technique, but not with black and white photographs. The use of photography reduced possible bias inherent in the direct microscopic observations used previously. The grades of the Caries Index were related to graded appearances visible to the naked eye on the dry tooth surfaces with good illumination. Changes in the enamel surface occurred more frequently when the surface was covered with thick plaque than when little or no plaque was detectable. © 1978.