Comparative evaluation of the group of teeth with the best prediction value in the mixed dentition analysis

Authors:

ABSTRACT

Aim

Mixed dentition analysis allows the prediction of the tooth width of non erupted permanent canines and
premolars (SPCP). It is an essential factor in treatment planning since it could predict a tooth-size to arch-length
discrepancy. The aim of this study was to determine which group of permanent teeth presented the best prediction capability
for the width sums of the unerupted canine and premolars in an Italian sample.

Methods

A total of 150
subjects with complete permanent dentition were selected. Their dental casts were measured to 0.01 mm with a digital caliper.
Pearson correlation and T-test were used for the statistical analysis.

Results

Statistics: The combination of the sums of
the four lower incisors and the first upper molars showed the best prediction capability for the SPCP in the Italian sample.
Moreover new regression equations were formulated including sex and arch as additional predictor variables. In 80
of the cases estimated differences between the predicted and the actual values were smaller than 1 mm.

Conclusion

It
can be concluded that the new regression equations proposed seemed to show good accuracy.

PLUMX METRICS