Temporomandibular Joint Magnetic Resonance Imaging Analysis in Adults with Steinert's Myotonic Dystrophy

Temporomandibular Joint Magnetic Resonance Imaging Analysis in Adults with Steinert's Myotonic Dystrophy

Alternative title Temporomandibular Joint Magnetic Resonance Imaging Analysis in Adults with Steinert's Myotonic Dystrophy
Author Guimaraes, Antonio Sergio Autor UNIFESP Google Scholar
Galdames, Ivan Claudio Suazo Autor UNIFESP Google Scholar
Marie, Suely Kazue Nagahashi Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Univ Diego Portales
Universidade de São Paulo (USP)
Abstract The aim was to analyze the characteristics of the temporomandibular joint (TMJ) in a group of adult patients suffering from Steinert's muscular dystrophy (DM1). This study included 42 adult patients aged between 21 and 69 years (mean = 38.7619; SD = 12.74) who were diagnosed for DM1. Study was conducted using the MRI of right and left TMJ sagittal images taken in maximum intercuspidation position and maximum oral opening without pain, and the following were discussed: a) the quality of the cortical bone in the mandibular fossa, tuberosity, and mandibular head; b) the relationship of mandibular head-disc-joint tuberosity in maximum intercuspidation position; c) the anatomical shape of the articular disc. All patients showed abnormalities in the shape and surface of the cortical bone in the mandibularfossa, tuberosity, and the mandibular head. With regard to the relationship of the mandibular head in the mandibular fossa, 41% was found in the region 2B, 29% in 1B, 18% in 1A, 9% in 2C, and 3% in 2A of the TMJ. About 49% of the disc in maximum intercuspidation position was found on the mandibular head, 26% were anterior displaced, 14% had anterior dislocations, 38% had alterations in the form of disc, and 30% had preserved the anatomical shape. However, 98% of the discs showed hyposignal in T1 and T2. Using MRI, the decrease in the muscle activity in patients with DM1 was found to generate degenerative changes visible in the TMJ.
Keywords Temporomandibular joint
Steinert's disease
Myotonic dystrophy
Magnetic resonance imaging
Language English
Date 2013-03-01
Published in International Journal Of Morphology. Temuco: Soc Chilena Anatomia, v. 31, n. 1, p. 301-306, 2013.
ISSN 0717-9502 (Sherpa/Romeo, impact factor)
Publisher Soc Chilena Anatomia
Extent 301-306
Origin http://dx.doi.org/10.4067/S0717-95022013000100047
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000321868400047
SciELO ID S0717-95022013000100047 (statistics in SciELO)
URI http://repositorio.unifesp.br/11600/44084

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account