Aim: The purpose of this study was to compare the vertical dimension of rest (VDR) measurement using phonetic and digital photo analysis methods.
Materials and Methods: Forty dentate subjects with a mean age of 21 were enrolled. Inclusion criteria were subjects with Angle class I malocclusion, with normal overjet and overbite, no history of wearing orthodontics appliances and no face deformities or asymmetry. Phonetic method to assess the VDR was by measuring the distance between 2 points, one at the tip of nose and the other at the chin using digital Vernier calliper. This was measured while the subject pronounced the letter m. In the photo analysis method, subjects were photographed with a distance of 56 cm from the tip of the nose to the lens while the subjects pronounced the letter m. Measurement on the the photograph was made using Corel Draw X5 application.
Results: The results of independent sample t-test showed no significant differences between vertical dimension of rest measurement from phonetic and photo analysis method.
Conclusion: There was no difference in the VDR measurement between phonetic and photo analysis methods.