PMID: 9639159Jun 25, 1998Paper

Ratio between vertical and horizontal mandibular range of motion

Journal of Oral Rehabilitation
P U DijkstraL G de Bont

Abstract

Mandibular range of motion (ROM), vertical and horizontal, is often measured as a part of a diagnostic assessment of temporomandibular joint disorders. In the literature, a fixed ratio between the vertical and the horizontal ROM has been suggested, i.e. 4:1. The ratio is frequently used to predict the vertical ROM on the basis of the horizontal ROM and vice versa. However, no scientific data are available to substantiate the ratio suggested. The aim of this study was to determine whether the fixed ratio of 4:1 exists and, if so, whether this ratio has a predictive value. Vertical and horizontal mandibular ROM was measured in 91 healthy subjects, 59 women, and 32 men (mean age 27.2 years, s.d. 7.4 years) using vernier callipers. We found a mean ratio between vertical and horizontal ROM ranging from 6.0:1-6.6:1. On an individual basis the ratio ranged from 3.6-15.5. Correlations between vertical and horizontal ROM were weak. On the basis of the results on this study it is concluded that the ratio between vertical and horizontal ROM is approximately 6:1 rather than 4:1, and that the ratio has poor predictive value.

References

May 1, 1990·The Journal of Prosthetic Dentistry·S F DworkinM Von Korff
Sep 1, 1987·The Journal of Prosthetic Dentistry·G Agerberg
Dec 1, 1993·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·R R Lemke, J Van Sickels
Jun 1, 1993·Archives of Psychiatric Nursing·C A Glod

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Citations

May 1, 2010·International Journal of Oral and Maxillofacial Surgery·E T NiezenP U Dijkstra
Aug 25, 2009·Cranio : the Journal of Craniomandibular Practice·Bülent GökçeMehmet Sonugelen
Dec 7, 2014·The British Journal of Oral & Maxillofacial Surgery·E T NiezenP U Dijkstra
Aug 16, 2016·Craniomaxillofacial Trauma & Reconstruction·Sudheesh K MSubhalakshmi S
Dec 19, 2016·Journal of Investigative and Clinical Dentistry·Elif Yıldızer KerişŞeminur Haznedaroğlu

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