Abstract
The present study was undertaken to survey the relationship between the Tooth-to-Denture-Base Discrepancy and dental disease in 144 junior high school boys and girls aged 14 to 15 years. Tooth-to-Denture-Base Discrepancy was evaluated quantitatively based on the Total Discrepancy (TD) which consisted of the Arch Length Discrepancy(ALD)for the degree of crowding and Head Plate Correction (HPC) for the labial inclination of lower anterior teeth using Tweed's method.
No difference based on sex was observed on TD and ALD. The mean value of TD was -2.70 and it was ranged from -21.5 to 16.3.
No statistical significant relationship between the experience of dental caries (DMFT) and TD was found, but there was a statistically significant correlation between DMFT in anterior teeth and ALD.
In the statistical analysis of the relationship between periodontal disease by Russell's Periodontal Index (P. I. ) and discrepancy, a weak negative correlation (r=-0.19, p<0.05) between P. I. in the lower jaw and TD was found, but there was no significant correlation between P. I. and ALD.
Therefore, it is suggested that factors other than discrepancy had influenced the incidence of dental caries and periodontal disease in these junior high school children.
