3D-Analysis of Correlations Between Facial Measurements and Maxillary Anterior Tooth Dimensions Using Integrated...

Area of Science:

• Dental Anthropology
• Craniofacial Research
• 3D Imaging Technologies

Background:

• Accurate assessment of tooth dimensions is crucial in restorative dentistry and orthodontics.
• Establishing reliable correlations between facial morphology and dental measurements can aid in treatment planning.
• Three-dimensional (3D) imaging offers enhanced precision for capturing complex anatomical relationships.

Purpose of the Study:

• To investigate the associations between specific facial measurements and the dimensions of maxillary anterior teeth.
• To utilize integrated 3D facial and intraoral datasets for a comprehensive analysis.
• To determine quantifiable relationships between extraoral and intraoral parameters.

Main Methods:

• Eighty-one participants underwent 3D facial and intraoral scanning.
• Key intraoral measurements included mesiodistal and cervicoincisal dimensions of anterior teeth and canine tip-to-tip distance (TTD).
• Extraoral measurements comprised interpupillary distance (IPD), innercanthal distance (ICD), and interalar distance (IAD).
• Statistical analyses included Pearson correlation and proportional ratio calculations.

Main Results:

• Interalar distance (IAD) demonstrated significant correlations with maxillary central incisor width (MeanW1) and TTD.
• Interpupillary distance (IPD) showed a significant correlation only with TTD.
• The ratio of TTD to IAD was consistently found to be approximately 1.03.
• The width of a central incisor approximated one-quarter of the TTD.

Conclusions:

• Interalar distance (IAD) exhibits the most robust association with anterior tooth dimensions among the measured facial parameters.
• The established TTD/IAD ratio of approximately 1:1 provides a quantitative link between facial width and dental arch width.
• These findings offer valuable insights for estimating anterior tooth dimensions, particularly when pre-extraction records are unavailable.