Relationship between sphenomandibular muscle hyperactivity and visual symptoms
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Data
2012-12
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Resumo
This was an observational, descriptive study developed after an anatomical investigation
of cadavers to identify the sphenomandibular muscle as an independent entity. The objective
here was to perform a clinical and interpretative evaluation of the physiological relationships
between the functions of the sphenomandibular muscle and various symptoms, thereby associating
temporomandibular disorders with ocular pain. Ten anatomical sets (fi ve cadavers) in the Department
of Anatomy of the Medicine School of the Catholic University of Goiás were examined. This study
was conducted between April, 2006 and December, 2008. Patients (181 subjects) suffering from
temporomandibular disorder were treated in the Federal University of Goiás Dental School. Two
groups were compared: Group I consisted of 58 patients with temporomandibular disorder, referred
ocular pain, and hyperactivity of the sphenomandibular muscles; Group II was comprised of 45
patients with temporomandibular disorder, ocular pain, but no hyperactivity of the sphenomandibular
muscles. After a clinical exam, treatments were conducted with semi-yearly follow-up exams for
2 years. Responses to the treatment were evaluated by questionnaires thereby quantifying existing
levels of ocular pain. Pain was eliminated in 46 of the 58 patients in Group I (79.31%) and 8 of
the 45 patients in Group II (17.77%). Our evaluation affi rms that the sphenomandibular muscle,
independent of the temporal muscle, has an intimate relationship with the orbit. The clinical exam
allowed an evaluation of the sphenomandibular muscles in temporomandibular disorder episodes.
The hyperactivity of the sphenomandibular muscle is thus signifi cantly related to the presence of
ocular-referred pain (p < 0.05).
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Palavras-chave
Temporomandibular disorder, Referred pain, Sphenomandibular muscle, Desordem temporomandibular, Músculo esfenomandibular, Dor referida
Citação
BORGES, Raulino Naves Borges; ÁVILA, Marcos. Relationship between spenomandibular muscle hyperactivity and visual symptoms. Stomatos, Canoas, v. 18, n. 35, p. 46-53, July/Dec. 2012.