TMJ and Jaw Pain (Temporomandibular Disorder).
What is temporomandibular disorder?
Temporomandibular disorder (TMD) affects the jaw joint and the muscles used for chewing, causing problems that can be painful and limit movement. The temporomandibular joint (TMJ) connects the jaw (mandible) to the skull at the temporal bone, and acts like a sliding hinge allowing the mouth to open, close and move sideways for chewing and speaking.
TMD is one of the most common orofacial pain conditions, affecting approximately 5 to 12% of the population at any given time, with a peak prevalence in adults between 20 and 40 years of age and a higher prevalence in women than men. It encompasses a spectrum of conditions affecting the TMJ disc, the joint itself, and the surrounding masticatory muscles — and distinguishing between these components is important for guiding the most effective treatment.
Types of temporomandibular disorder
The Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) classifies TMD into three main groups.
Myofascial pain — pain and tenderness in the muscles of mastication (masseter, temporalis, medial and lateral pterygoid) — is the most common TMD presentation. It produces diffuse jaw, temple, cheek and ear pain that is reproduced by palpation of the affected muscles. Trigger points in the masseter and temporalis are common contributors to both local jaw pain and referred headache.
Disc displacement — where the articular disc that normally sits between the condyle and temporal bone is displaced, usually anteriorly — produces the characteristic clicking or popping sound on jaw opening and closing when the condyle moves over the displaced disc. In disc displacement with reduction, the click occurs as the condyle recaptures the disc on opening — this is the most common pattern and often manageable conservatively. Disc displacement without reduction (closed lock) produces limited jaw opening with deviation toward the affected side and no click — the disc is irreducibly displaced and the condyle cannot recapture it.
Degenerative joint disease — osteoarthritis of the TMJ — produces crepitus (grinding or grating sounds) rather than clicks, joint-line tenderness, and progressive limitation of jaw opening in older adults.
What are the symptoms?
Symptoms of TMD include pain in the jaw, cheek, or near the ear, ear pain, tooth pain, dizziness or ringing in the ears, limited movement of the jaw, noises when opening or closing the jaw, clenching or grinding the teeth, and headaches or facial pain.
The relationship between TMD and headache deserves specific mention. The temporalis muscle — one of the primary muscles of mastication — refers pain into the temple and forehead when active with trigger points, producing a pattern that closely mimics tension headache and migraine. Many patients with headaches and migraines who have not responded to standard headache management have an unrecognised masticatory muscle component that physiotherapy can address. Similarly, the close relationship between the TMJ and the upper cervical spine means that cervicogenic headache and TMD frequently coexist and reinforce each other.
The cervical spine connection
The relationship between the TMJ and the cervical spine is one of the most clinically important and most frequently missed aspects of TMD assessment. The trigeminal nucleus — which processes pain from the jaw and face — converges with the upper cervical nerve roots at the trigemino-cervical nucleus in the upper spinal cord. This means that cervical pain can sensitise the trigeminal system and worsen jaw pain, and vice versa. Many patients with TMD have concurrent upper cervical dysfunction that perpetuates their jaw symptoms if not treated.
A comprehensive physiotherapy assessment for TMD includes assessment of the upper cervical spine — cervical facet joint mobility, deep cervical flexor function, and postural factors — alongside the direct jaw assessment. Treating both simultaneously produces better outcomes than addressing either in isolation.
What causes TMD?
Causes of TMD include psychological factors such as stress or anxiety, which can cause jaw muscle tension and bruxism (teeth grinding). Joint disorders involving the disc that cushions the jaw joint can lead to pain and limited movement.
Other contributing factors include malocclusion (poor bite alignment), parafunctional habits (pen chewing, nail biting, gum chewing, jaw clenching), previous jaw trauma or dental procedures, hypermobility — generalised joint laxity increases the risk of disc displacement and TMJ instability — and whiplash injuries that affect the cervical spine and indirectly stress the TMJ through the trigemino-cervical convergence mechanism.
How is it diagnosed?
Clinical assessment involves palpation of the masticatory muscles and TMJ for tenderness, assessment of jaw opening range and deviation pattern, identification of clicking or crepitus, and provocation testing. Maximum jaw opening below 40mm is considered restricted. Assessment of the upper cervical spine is an essential component. Imaging — OPG X-ray, CT or MRI — may be used to identify disc position, bony changes or rule out serious pathology, though clinical correlation is always required as imaging findings may not correspond to symptom severity.
How can physiotherapy help?
Physiotherapy is highly effective for TMD and is one of the primary recommended conservative interventions in clinical guidelines. Physiotherapy interventions include manual therapy to improve jaw mobility and reduce pain, soft tissue mobilisation to relieve muscle tension, muscle strengthening and stretching exercises to improve jaw function, and joint mobilisation to improve movement.
Manual therapy to the TMJ — distraction and translation mobilisation techniques — restores joint mobility in restricted jaw opening, reduces joint pain through neurophysiological mechanisms, and in some cases assists disc recapture in anteriorly displaced disc presentations. The evidence base for manual therapy in TMD is good and it is one of the most effective short-term interventions.
Masticatory muscle treatment — trigger point release, massage and dry needling of the masseter, temporalis and pterygoid muscles — addresses the myofascial pain component. Dry needling of the masseter in particular can produce rapid and significant relief of masticatory muscle pain and associated referred headache.
Deep cervical flexor retraining and upper cervical mobilisation address the cervical spine component of TMD — particularly important in patients with concurrent cervicogenic headache, whiplash history, or a forward head posture that increases masticatory muscle tension.
Jaw exercise programs — including controlled jaw opening exercises, lateral deviation exercises and coordination training — restore the normal movement pattern and muscular coordination that has been disrupted by pain and altered movement habits.
Education on parafunctional habits — jaw clenching, teeth grinding, chewing hard foods, pen biting — and relaxation strategies for stress-related jaw tension are important self-management components. Nocturnal bruxism (teeth grinding during sleep) is managed in collaboration with the patient's dentist, who may prescribe an occlusal splint.
Postural correction — addressing the forward head posture that increases masticatory muscle tension and narrows the cervical spine's capacity to modulate trigeminal pain — is a valuable longer-term component particularly for desk workers and frequent device users.
Our physiotherapists Yulia Khasyanova, Mauricio Bara and Bethany Kippen both have experience in TMD and orofacial pain management and are members of the Australian Physiotherapy Association.
To book or find out more, call us on 07 3706 3407 or book online below. We see patients from across Brisbane's southside including Tarragindi, Coorparoo, Holland Park, Greenslopes and Mt Gravatt
Temporomandibular disorder (TMD) affects the jaw joint and the muscles used for chewing, causing problems that can be painful and limit movement. The temporomandibular joint (TMJ) connects the jaw (mandible) to the skull at the temporal bone, and acts like a sliding hinge allowing the mouth to open, close and move sideways for chewing and speaking.
TMD is one of the most common orofacial pain conditions, affecting approximately 5 to 12% of the population at any given time, with a peak prevalence in adults between 20 and 40 years of age and a higher prevalence in women than men. It encompasses a spectrum of conditions affecting the TMJ disc, the joint itself, and the surrounding masticatory muscles — and distinguishing between these components is important for guiding the most effective treatment.
Types of temporomandibular disorder
The Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) classifies TMD into three main groups.
Myofascial pain — pain and tenderness in the muscles of mastication (masseter, temporalis, medial and lateral pterygoid) — is the most common TMD presentation. It produces diffuse jaw, temple, cheek and ear pain that is reproduced by palpation of the affected muscles. Trigger points in the masseter and temporalis are common contributors to both local jaw pain and referred headache.
Disc displacement — where the articular disc that normally sits between the condyle and temporal bone is displaced, usually anteriorly — produces the characteristic clicking or popping sound on jaw opening and closing when the condyle moves over the displaced disc. In disc displacement with reduction, the click occurs as the condyle recaptures the disc on opening — this is the most common pattern and often manageable conservatively. Disc displacement without reduction (closed lock) produces limited jaw opening with deviation toward the affected side and no click — the disc is irreducibly displaced and the condyle cannot recapture it.
Degenerative joint disease — osteoarthritis of the TMJ — produces crepitus (grinding or grating sounds) rather than clicks, joint-line tenderness, and progressive limitation of jaw opening in older adults.
What are the symptoms?
Symptoms of TMD include pain in the jaw, cheek, or near the ear, ear pain, tooth pain, dizziness or ringing in the ears, limited movement of the jaw, noises when opening or closing the jaw, clenching or grinding the teeth, and headaches or facial pain.
The relationship between TMD and headache deserves specific mention. The temporalis muscle — one of the primary muscles of mastication — refers pain into the temple and forehead when active with trigger points, producing a pattern that closely mimics tension headache and migraine. Many patients with headaches and migraines who have not responded to standard headache management have an unrecognised masticatory muscle component that physiotherapy can address. Similarly, the close relationship between the TMJ and the upper cervical spine means that cervicogenic headache and TMD frequently coexist and reinforce each other.
The cervical spine connection
The relationship between the TMJ and the cervical spine is one of the most clinically important and most frequently missed aspects of TMD assessment. The trigeminal nucleus — which processes pain from the jaw and face — converges with the upper cervical nerve roots at the trigemino-cervical nucleus in the upper spinal cord. This means that cervical pain can sensitise the trigeminal system and worsen jaw pain, and vice versa. Many patients with TMD have concurrent upper cervical dysfunction that perpetuates their jaw symptoms if not treated.
A comprehensive physiotherapy assessment for TMD includes assessment of the upper cervical spine — cervical facet joint mobility, deep cervical flexor function, and postural factors — alongside the direct jaw assessment. Treating both simultaneously produces better outcomes than addressing either in isolation.
What causes TMD?
Causes of TMD include psychological factors such as stress or anxiety, which can cause jaw muscle tension and bruxism (teeth grinding). Joint disorders involving the disc that cushions the jaw joint can lead to pain and limited movement.
Other contributing factors include malocclusion (poor bite alignment), parafunctional habits (pen chewing, nail biting, gum chewing, jaw clenching), previous jaw trauma or dental procedures, hypermobility — generalised joint laxity increases the risk of disc displacement and TMJ instability — and whiplash injuries that affect the cervical spine and indirectly stress the TMJ through the trigemino-cervical convergence mechanism.
How is it diagnosed?
Clinical assessment involves palpation of the masticatory muscles and TMJ for tenderness, assessment of jaw opening range and deviation pattern, identification of clicking or crepitus, and provocation testing. Maximum jaw opening below 40mm is considered restricted. Assessment of the upper cervical spine is an essential component. Imaging — OPG X-ray, CT or MRI — may be used to identify disc position, bony changes or rule out serious pathology, though clinical correlation is always required as imaging findings may not correspond to symptom severity.
How can physiotherapy help?
Physiotherapy is highly effective for TMD and is one of the primary recommended conservative interventions in clinical guidelines. Physiotherapy interventions include manual therapy to improve jaw mobility and reduce pain, soft tissue mobilisation to relieve muscle tension, muscle strengthening and stretching exercises to improve jaw function, and joint mobilisation to improve movement.
Manual therapy to the TMJ — distraction and translation mobilisation techniques — restores joint mobility in restricted jaw opening, reduces joint pain through neurophysiological mechanisms, and in some cases assists disc recapture in anteriorly displaced disc presentations. The evidence base for manual therapy in TMD is good and it is one of the most effective short-term interventions.
Masticatory muscle treatment — trigger point release, massage and dry needling of the masseter, temporalis and pterygoid muscles — addresses the myofascial pain component. Dry needling of the masseter in particular can produce rapid and significant relief of masticatory muscle pain and associated referred headache.
Deep cervical flexor retraining and upper cervical mobilisation address the cervical spine component of TMD — particularly important in patients with concurrent cervicogenic headache, whiplash history, or a forward head posture that increases masticatory muscle tension.
Jaw exercise programs — including controlled jaw opening exercises, lateral deviation exercises and coordination training — restore the normal movement pattern and muscular coordination that has been disrupted by pain and altered movement habits.
Education on parafunctional habits — jaw clenching, teeth grinding, chewing hard foods, pen biting — and relaxation strategies for stress-related jaw tension are important self-management components. Nocturnal bruxism (teeth grinding during sleep) is managed in collaboration with the patient's dentist, who may prescribe an occlusal splint.
Postural correction — addressing the forward head posture that increases masticatory muscle tension and narrows the cervical spine's capacity to modulate trigeminal pain — is a valuable longer-term component particularly for desk workers and frequent device users.
Our physiotherapists Yulia Khasyanova, Mauricio Bara and Bethany Kippen both have experience in TMD and orofacial pain management and are members of the Australian Physiotherapy Association.
To book or find out more, call us on 07 3706 3407 or book online below. We see patients from across Brisbane's southside including Tarragindi, Coorparoo, Holland Park, Greenslopes and Mt Gravatt
