1992•Nihon Hotetsu Shika Gakkai ZasshiOpen access

Effect of Change in Occlusal Vertical Dimension on Chewing Movements. Part 1. Influences on the Rhythm of Chewing Movements.

Rieko Ibaraki, Shin‐ichi Yamada, Toshiya Kuwahara, Takahiro Mizumori, Fumio Takashima, Takao Maruyama

Abstract

Assessment of occlusal vertical dimension (OVD) is an essential in the dental treatment. However, physiolosical effects of the change in OVD remains unclear.The purpose of this study is to assess the effect of the change in OVD on the stomatognathic function by analyzing any chewing movements.Five subjects without any signs or symptoms of craniomandibular disorders and with normal occlusion (age: 24-28 years, 4 males and 1 female) were selected. Onlay-type appliance was fabricated to raise the OVD by about 2mm. The chewing movements were recorded and analyzed using the Sirognathograph Analyzing System III.As a result, no change was observed in cycle time of the chewing movements, however as for each duration, some changes was observed.

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Key concepts: Vertical dimension of occlusion, Stomatognathic system, Mastication, Rhythm, Dentistry, Orthodontics, Medicine, Occlusion