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P 71<br />

Title<br />

CAN PTERyGOID PLATE ASyMMETRy bE LINKED TO TEMPOROMANDIbuLAR JAW<br />

DISORDERS?<br />

Authors<br />

M.E. GuERRERO 1 , J. bELTRAN 2 , R. JACObS 1<br />

Affiliations<br />

1 Oral Imaging Center - Department of Oral Health Sciences, Leuven, BELGIUM, 2 Oral and<br />

Maxillofacial Radiology - PostGraduate School, Lima, PERU<br />

Body<br />

Objective: The primary objective of this study w<strong>as</strong> to evaluate the <strong>as</strong>sociation of pterygoid<br />

plate <strong>as</strong>ymmetry and temporomandibular jaw disorders.<br />

Materials and methods: Cone beam CT images of 20 patients with unilateral temporomandibular<br />

jaw disorders were analyzed. Three observers performed dimensional me<strong>as</strong>urements of the<br />

pterygoid plates.<br />

Results: Significant differences appeared between dimensional me<strong>as</strong>ures of the pterygoid plates<br />

on the site with reported TMJ pain and the contralateral one (p=0.00), with the painfree<br />

site showing larger prteygoid plate dimensions. Intracl<strong>as</strong>s correlation coefficient w<strong>as</strong> calculated<br />

for inter-examiner reliability, showing a very high ICC for all the examiners (0.99, 95% CI<br />

0.98-0.99).<br />

Conclusion: Within the limits of the present c<strong>as</strong>e series, CBCT pterygoid plates me<strong>as</strong>urements<br />

of the site with TMJ pain were found significantly smaller <strong>as</strong> compared to the site without<br />

pain. Multicenter trials are needed to establish its true etiological effects and if that is shown,<br />

find the best therapy for specific clinical conditions of temporomandibular disorders.<br />

Keywords<br />

cone beam CT,temporomandibular disorders,pterigoid muscles<br />

186

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