Vertical Dimension Meets Facial Metrics: Unlocking Hidden Correlations

Introduction: Establishing an accurate vertical dimension of occlusion (VDO) is a critical step in prosthodontic rehabilitation, particularly in edentulous patients, where loss of teeth leads to altered jaw relations, compromised esthetics, and functional imbalance. The lower third of the face significantly influences facial expression and appearance, making restoration of a harmonious VDO essential. Among various methods available, anthropometric measurements offer simple, non-invasive, and reproducible alternatives. Methods: This anthropometric study evaluated the relationship between VDO and selected facial measurements—linear length of the ear (LLE) and eye–ear distance (EED) in 500 dentate individuals from a North Indian population. VDO was measured as the distance from the tip of the nose to the most prominent point on the chin in maximum intercuspation. LLE was recorded from the superior to inferior border of the ear, and EED from the lateral canthus of the eye to the tragus of the ear. Each measurement was recorded thrice, and the mean value was used for analysis. Statistical evaluation included Pearson’s correlation and linear regression. Results: A positive correlation was observed between VDO and both LLE and EED. Stronger correlations were noted in females, particularly between VDO and LLE, indicating potential gender-based variations in anthropometric relationships. Conclusion: Within the limitations of the study, LLE and EED can serve as reliable adjuncts in estimating VDO. These methods are simple, economical, non-invasive, and reproducible, thereby enhancing clinical accuracy and esthetic outcomes in prosthodontic practice.