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Dento-facial relationships in individuals with normal occlusion
Ali R Al-Khatib1, Zainul A Rajion, Sam'an M Masudi
1School of Dental Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kota Bharu, Kelantan, Malaysia.
Summary
Facial measurements correlate with dental arch dimensions and tooth widths in individuals with normal occlusions. These findings are crucial for orthodontic treatment and prosthodontic tooth selection.
Area of Science:
- Orthodontics and Dental Anthropology
- Craniofacial Morphology and Dental Relationships
Background:
- Understanding the relationship between facial structure and dental arch dimensions is vital for effective orthodontic and prosthodontic interventions.
- Previous research has explored craniofacial and dental correlations, but specific associations with mesio-distal crown widths and detailed arch dimensions require further investigation.
Purpose of the Study:
- To investigate the correlations between selected facial measurements and mesio-distal crown widths and dental arch dimensions in individuals presenting with normal occlusions.
- To determine the extent to which facial variables predict dental arch and crown dimensions.
Main Methods:
- A cross-sectional study involving 276 subjects with Angle's Class I normal occlusions.
- Utilized stereophotogrammetric systems to capture and analyze three-dimensional facial images and dental casts.
- Performed correlation analyses and principal components analysis to evaluate relationships between facial and dental variables.
Main Results:
- Significant positive correlations were observed between sagittal facial variables and both upper and lower dental arch dimensions.
- Facial measurements, including sagittal dimensions, face height, nose, labial fissure, and binocular widths, were positively associated with dental arch dimensions and mesio-distal crown diameters in males.
- In females, only sagittal facial variables showed significant associations with dental dimensions.
Conclusions:
- Positive associations exist between facial dimensions and dental arch dimensions, supporting the integration of facial analysis in dental treatment planning.
- These craniofacial-dental relationships are important considerations for orthodontic treatment aimed at modifying dental arch size.
- Findings are relevant for prosthodontists in selecting tooth sizes that achieve functional balance with craniofacial structures.
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