Assessment of Correlation between Vertical Dimensions of Occlusion Measured by Mandibular Rest Position and ANS-Xi-Pm Cephalometric Angle: A Cross-Sectional Analytical Study

Introduction: We aimed to assess the correlation between vertical dimension of occlusion measured by mandibular rest position (two-dots facial measurement) and ANS-Xi-Pm cephalometric angle. Methods: Patients classified as Class I or II Kennedy were selected, aged between 30 and 50 years, and without signs or symptoms related to joint or muscular dysfunction. The vertical dimension was measured by two methods as follows: first, the two-dots facial measurement technique. The second method was by taking lateral cephalometric X-rays with measurement of ANS-Xi-Pm angle. Results: Data analysis with Pearson’s correlation coefficient showed a weak non-significant correlation between vertical dimension of occlusion measured by mandibular rest position (two-dots facial measurement) and ANS-Xi-Pm cephalometric angle ( r : 0.193, P -value: 0.415). Conclusion: More studies with larger sample sizes are required to reach a conclusion regarding the clinical effectiveness of the ANS-Xi-Pm cephalometric angle in determining the occlusal vertical dimension.