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Updated: Aug 10, 2026
Oral Biofilm Analysis of Palatal Expanders by Fluorescence In-Situ Hybridization and Confocal Laser Scanning Microscopy
Published on: October 20, 2011
[Clinical study of use of laser fluorescence for detecting occlusal caries in deciduous teeth]
1Dept. of Preventive Dentistry, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Objective:
To evaluate the distribution of DIAGNOdent value according to varying clinical caries severity.
Methods:
A total of 541 deciduous molar teeth in children aged from 5 to 6 were examined using DIAGNOdent by one trained dentist. The most severity site in every tooth was recorded. The same sites were examined visually by another dentist. The distribution regular of DIAGNOdent value was analyzed according to the clinical severity score by Ekstrand index.
Results:
The higher the visual score, the higher the mean DIAGNOdent value. The variation of values in each visual category was larger than that of values recommended by manufacturers. When clinical severity score was 0, 1, 2, 3 and 4, the median of DIAGNOdent value was 0, 5, 19, 49 and 99 respectively. The mean value for sound surfaces was lower in primary teeth than the cut-off points recommended by manufacturers, but the value of DIAGNOdent was increased obviously when the transparency change of enamel was detected visually.
Conclusion:
DIAGNOdent is useful in detecting occlusal caries in deciduous teeth, but the cut-off levels is not coinciding perfectly with manufacturer suggesting.
