Comparative study of the position of the articular disc by magnetic resonance images / Estudo comparativo entre métodos de localização da posição do disco articular por meio de imagens de ressonância magnética

AUTOR(ES)

Marcia de Mello Provenzano Faria

DATA DE PUBLICAÇÃO

2007

RESUMO

The purpose of the present study was to compare two methods used to determine disc position with the mouth closed based on corrected sagittal Magnetic Resonance (RM) images. One method analyzes the posterior band location in terms of hours on a clock face, and the other analyzes the location of the intermediate zone of the disc in relation to the mandibular head and the articular tubercle. This study also evaluated the correlation between the clinical diagnosis with the diagnosis obtained by each method. A series of 20 patients with signs and symptoms of temporomandibular dysfunction was clinically examinated and a clinical diagnosis was reached. Corrected sagittal RM images were acquired for both joints using a 0.3T equipment with bilateral surface coils. The method based on the posterior band location in terms of hours on a clock face yielded a higher percentage of anterior displaced discs (52.5%) when compared with the second method (30.0%). Statistically significant difference between the two methods was found. The overall agreement between both methods was 77.5%, the agreement between the clinical diagnosis and the clock face method was 70.0%, and the agreement between the clinical diagnosis and the intermediate zone method was 87.5%. No statistically significant difference was found between the clinical diagnosis and the method based on the location of the intermediate zone.

ASSUNTO(S)

articulação temporomandibular internal derangements magnetic resonance temporomandibular joint articular disc disco articular desordens internas ressonância magnética

Documentos Relacionados

• Análise por meio de ressonância magnética em pacientes sintomáticos da relação entre as alterações ósseas da articulação temporomandibular e derrame articular em função do posicionamento do disco articular
• Estudo do posicionamento do condilo e do disco articular correlacionado com a sintomatologia das desordens temporomandibulares por meio de imagens por ressonancia magnetica
• Comparison of transcranial radiographs and magnetic resonance imaging
• Estudo em nanocompósitos e eletrólitos poliméricos por ressonância magnética.
• Exame clínico e eletrovibratografia na detecção de deslocamento de disco articular: estudo comparativo