Clinical Exam and Electrovibratography Detecting Articular Disk Displacement: A Comparative Study (Tmj) (Report)
By CRANIO: The Journal of Craniomandibular Practice
- Release Date: 2011-10-01
- Genre: Engineering
Description
The complete diagnosis of the orthodontic patient is fundamental for treatment planning, including the evaluation of the temporomandibular joints (TMJ). Clinical examination and questionnaires are the most common methods used for TMJ evaluation. Examinations using magnetic resonance image (MRI), (1) tomograms, and arthography may also be recommended. This last technique can cause problems such as joint invasion, pain and allergy to contrast dyes. Because of the expense of the methods (2) mentioned, the use complementary examinations is not possible for all patients. Articular joint sounds are one of the most frequent signs of temporomandibular disorders (TMD), most often occurring when disk displacement is present. This condition is defined as an anatomical and functional abnormality of the disk, condyle, and temporal joint components and is considered a type of internal TMJ derangement. The most common method used to evaluate disk displacement is the clinical examination. (3-13) Electrovibratography (EVG) was developed to analyze articular vibrations, has been used as a noninvasive screening device for identifying patients with and without internal derangement, (2) and has been adopted in many studies. (14-28)
