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Correlation coefficients for predicting canine diameters from premolar and molar sizes
María Hilary Zúñiga1, Joan Viciano2, Gabriel Mario Fonseca3
1Departamento de Antropología, Facultad de Ciencias Sociales, Universidad de Chile, Chile.
Journal of Dental Sciences
|January 1, 2021
Summary
Forensic odontology uses canine teeth for sex estimation, but this study found only a limited correlation between canine and postcanine tooth dimensions. Predicted canine sizes showed moderate agreement with actual dimensions, suggesting a potential alternative when canines are unavailable.
Area of Science:
- Forensic Odontology
- Anthropology
- Dental Morphology
Background:
- Canine teeth are crucial for sex estimation in forensic anthropology due to high sexual dimorphism.
- Pathologies and postmortem loss can limit the use of canines for forensic analysis.
Purpose of the Study:
- To analyze the correlation between canine tooth dimensions and those of premolars and molars.
- To evaluate the accuracy of predicted canine dimensions using regression equations derived from other teeth.
Main Methods:
- Digital models of 80 adult individuals from Temuco, Chile were analyzed.
- Buccolingual and mesiodistal diameters of canine, premolar, and molar crowns were measured.
- Pearson's linear regression and statistical tests (Student's t-test, intraclass correlation) were employed.
Main Results:
- Four regression equations were developed for predicting lower canine dimensions, with correlation coefficients between 0.701 and 0.738.
- The differences between actual and predicted canine dimensions were not statistically significant.
- Concordance analysis indicated a moderate degree of agreement (0.485-0.585).
Conclusions:
- A limited correlation exists between canine dimensions and those of premolars and molars.
- The predictive accuracy of canine dimensions from postcanine teeth is moderate, offering a potential alternative in forensic sex estimation.
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