Influence of the vertical dimension in the treatment of myofascial pain-dysfunction syndrome

Arturo Ernesto Manns Freese*, Rodolfo Miralles, Hugo Santander, Jose Valdivia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Occlusal splints constructed at three different vertical heights were used to study the influence of vertical dimension in the etiology of bruxism and MPD syndrome. The vertical dimension of least EMG activity was determined for each of 75 patients who were randomly divided into three groups according to the vertical dimension at which the occlusal splint was constructed. Group I occlusal splints were constructed at 1 mm from the occlusal vertical dimension, group II splints at 4.42 mm, and group III splints at 8.15 mm. Results showed a faster and more complete reduction in clinical symptoms for groups II and III than for group I. The temporary use of occlusal splints with a vertical height exceeding the physiologic rest position did not encourage a greater muscular tonus or hyperactivity of jaw muscles. It can be concluded that elongation of elevator muscles to or near the vertical dimension of least EMG activity by means of occlusal splints is more effective in producing neuromuscular relaxation.

Original languageEnglish
Pages (from-to)700-709
Number of pages10
JournalThe Journal of Prosthetic Dentistry
Volume50
Issue number5
DOIs
StatePublished - Nov 1983
Externally publishedYes

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