TMJ Disorders
According to the American Academy Of Orofacial Pain, TMJ Disorder is defined as a collective term that encompasses a number of clinical problems that involves the masticatory muscles, or the joint itself or both.
CLASSIFICATION
Articular disorders (intra-articular)
Congenital or developmental disorders
· Condylar hyperplasia
· First and second brachial arch disorders
· Idiopathic condylar resorption
Degenerative joint disorders
· Inflammatory: capsulitis, synovitis, polyarthritides (rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, Reiter syndrome, gout)
· Non-inflammatory: osteoarthritis
Disk derangement disorders
· Displacement with reduction
· Displacement without reduction (closed lock)
· Perforation
Infection
Neoplasia
Temporomandibular hypermobility
· Dislocation
· Joint laxity
· Subluxation
Temporomandibular hypomobility
· Ankylosis: true ankylosis (bony or fibrous) or pseudoankylosis
· Postradiation fibrosis
· Trismus
Trauma
· Contusion
· Fracture
· Intracapsular hemorrhage
Masticatory muscle disorders (extra-articular)
· Local myalgia
· Myofascial pain disorder
· Myofibrotic contracture
· Myositis
· Myospasm
· Neoplasia
DIAGNOSIS
· Always take a good history from the patient
· location
· onset
· frequency and duration
· intensity ( 0-10)
· quality
· modifying factors
· other associated symptoms
Criteria for Intracapsular Disorders
Disc displacement with reduction
· patient reports clicking/popping/snapping while opening or closing /excursions
· - verify in physical examination
· may or may not be painful.
· pain if present occurs with jaw function-verify in physical examination
Disc displacement without reduction with limited mouth opening
· No current report of joint sounds
· mouth opening <= 40mm
· typically painful
· pain occurs with jaw function -verify in physical examination
Criteria for Extra Capsular Disorders
· Pain from muscle origin-complains of pain in front of the ear, jaw , temple
· Pain changes during jaw function.
· examination shows
· verification of pain site in palpation
· radiating pain
CENTRAL MEDIATED MYALGIA
· REPORTS widespread pain
· Examination will shows
· verification of familiar pain sites
· involves most of the masticatory and cervical muscles
· patient may or may not withdraw from your hands
· when you palpate pain may not come
Treatment
· Education
· conservative treatment
· sleep hygiene instruction
· appliances
· trigger point injections
· medicines
· INTERDISCIPLINARY CARE
WITH BEHAVIOURAL THERAPY,
PHYSICAL THERAPY, SURGERY.
by,
Dr.Renju T George,
India.