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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

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Stylohyoid complex ossification in temporomandibular disorder: a case-control study.

Francisco Carlos Sancio-Gonçalves¹, Mauro Henrique Nogueira Guimarães de Abreu, José Mário Netto Soares

¹Department of Clinical Pathology and Oral Surgery, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.

The Journal of Prosthetic Dentistry

|February 12, 2013

Summary

This study found no association between temporomandibular disorder (TMD) and stylohyoid complex ossification (SCO). Symptoms often linked to SCO also appeared in TMD patients, suggesting other causes.

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Area of Science:

Oral and Maxillofacial Radiology
Dental Research
Epidemiology

Background:

Stylohyoid complex ossification (SCO) is potentially linked to temporomandibular disorder (TMD).
Epidemiological data on the association between SCO and TMD is limited.
This study investigates the relationship between these two conditions.

Purpose of the Study:

To determine if there is an association between temporomandibular disorder (TMD) and stylohyoid complex ossification (SCO).

Main Methods:

A case-control study involved 78 individuals with TMD and 93 controls, paired by age and gender.
Panoramic radiographs were used to measure SCO (≥30 mm considered ossified) by a blinded researcher.
Statistical analysis included Pearson chi-square tests to compare proportions (α=.05).

Main Results:

No significant difference in SCO prevalence was found between TMD patients (44.9%) and controls (46.2%) (P=.858).
TMD was associated with pain upon swallowing and turning the head (P<.05 and P<.01, respectively).
No association was observed between SCO and symptoms like throat pain, foreign body sensation, or neck pain (P>.05).

Conclusions:

The study suggests no direct association between temporomandibular disorder (TMD) and stylohyoid complex ossification (SCO).
Symptoms commonly attributed to SCO were also present in patients with TMD, indicating potential overlap or alternative etiologies.