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International Arab Journal of Dentistry

Abstract

Introduction: This study investigates the value of the vertical dimension of rest (VDR) in dentate patients in different head postures, supported and unsupported by the headrest of the dental chair, as well as in standing position.

Methods: The VDR was measured and compared in 60 dentate individuals aged 20–25 in different positions (sitting with and without head support, and standing) three times per position. The head was aligned according to the Frankfurt plane when unsupported or standing. Data were analyzed using the Shapiro-Wilk test for normality and ANOVA to assess the effects of posture, gender, and their interaction.

Results: Head position and posture showed no statistical difference between the measurements of the VDR (p > 0.05). However, in the standing position, a stability and reproducibility of the VDR were increased. In addition to that, males showed a consistently higher VDR than females in all positions, and the t-test confirmed a statistically significant difference (p < 0.001) between genders.

Conclusions: Although head position and posture of the subject have no significant effect on the measurement of the VDR,gendercould beaclinical reality that could affect the VDR. The study found that males would have a systematically higher VDR than females. These results could be an interesting path for further studies.

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