Multivariate Analysis of Results of Tooth Preparation Practice in Manikin Head with Artificial Gingiva
Applying Principal Component Analysis
1997 Volume 41 Issue 5 Pages 835-842
Details
1997 Volume 41 Issue 5 Pages 835-842
In order to investigate the tendency of preparation results by dental students of the maxillary leftfirst molar in manikin head with artificial gingiva, 41 measurements (under 8 items) of each prepared artificialtooth were taken and these data were evaluated by the principal component analysis (PCA).
The results were as follows:
1. Cumulative contribution ratios of the first and second components of PCA were 0.19 and 0.11, respectively.
2. The results of PCA showed that the first component depended on the factor of the preparation volume, and the second component on the factor of the preparation form, respectively.
3. PCA revealed that in most cases of preparation by dental students, much tooth substance was lost andpreparation form was poor.
4. It is useful to apply PCA for the evaluation of multivariate measurements in the dental field.
