Joint Clicking, Locking, or Popping of the TMJ

TMJ Clicking, Locking, and Popping: A Physiotherapy Guide

If your jaw clicks every time you open your mouth, locks mid-bite, or makes an unsettling popping sound when you yawn, you are far from alone. Temporomandibular joint (TMJ) clicking, locking, and popping are among the most common reasons patients seek help at a physiotherapy clinic. These noises and mechanical disruptions usually stem from displacement of the small fibrocartilaginous disc that sits between the bones of the jaw joint. The good news is that the vast majority of cases respond well to conservative, non-surgical physiotherapy treatment. At Vaughan Physiotherapy, we help patients across Thornhill, Vaughan, and the Greater Toronto Area resolve TMJ symptoms and return to pain-free eating, talking, and living.

What Is TMJ Clicking, Locking, and Popping?

The terms clicking, locking, and popping all describe mechanical events inside the temporomandibular joint that occur when the articular disc is not in its ideal position relative to the mandibular condyle and the temporal bone.

Clicking is a brief, distinct sound that happens at a specific point during mouth opening or closing. It typically signals that the displaced disc is momentarily "recaptured" by the condyle as it slides forward — a condition formally known as disc displacement with reduction (DDwR). A 2019 review in the Journal of Applied Oral Science found that DDwR accounts for roughly 41 percent of all TMD clinical diagnoses, and that it can be present in up to 33 percent of people who have no symptoms at all (Braga et al., 2019, PMC6382319).

Popping is essentially a louder or more pronounced click. Clinically, clicking and popping are considered the same phenomenon on a spectrum of intensity. Both indicate that the disc is slipping and then snapping back into place.

Locking occurs when the disc displaces and does not return to its normal position — disc displacement without reduction (DDwoR). The patient feels the jaw "catch" or become stuck, and maximum mouth opening drops dramatically. A 2024 cross-sectional study involving 327 patients confirmed that the earlier physiotherapy begins after the onset of locking, the greater the improvement in mandibular range of motion (Kijak et al., 2024, PMC10856411).

Anatomy of the TMJ — Understanding the Disc

To appreciate why clicking and locking happen, it helps to understand the joint's architecture.

• The bones
• The TMJ is formed by the mandibular condyle (the rounded top of the lower jawbone) and the glenoid fossa (the shallow socket on the underside of the temporal bone of the skull). Unlike most joints, the TMJ performs both rotational and translational movements — the condyle rotates in the fossa and then glides forward along the articular eminence when the mouth opens wide.
• The articular disc
• Between the condyle and the fossa is a biconcave disc made of dense fibrocartilage. This disc divides the joint space into superior and inferior compartments, cushions compressive forces, and guides smooth condylar movement. The disc is attached posteriorly to the retrodiscal tissue (bilaminar zone), which is rich in blood vessels and nerves, and anteriorly to the lateral pterygoid muscle and the joint capsule.
• The muscles
• Four primary muscles of mastication power the jaw: the masseter, temporalis, medial pterygoid, and lateral pterygoid. The superior head of the lateral pterygoid inserts directly into the anterior band of the disc, and dysfunction or hyperactivity in this muscle is closely linked to anterior disc displacement (Aravindaksha et al., 2021, PMC8631581).
• The capsule and ligaments
• The fibrous joint capsule, the temporomandibular ligament, the stylomandibular ligament, and the sphenomandibular ligament all contribute to joint stability. When these structures are lax or injured, the disc can migrate out of position.

What Causes TMJ Disc Displacement?

Disc displacement is rarely caused by a single event. Instead, it typically results from a combination of biomechanical, behavioural, and structural factors.

• Parafunctional habits
• Chronic clenching and grinding (bruxism), nail biting, and gum chewing overload the joint and fatigue the lateral pterygoid, gradually pulling the disc anteriorly.
• Trauma
• A direct blow to the chin, a whiplash-type injury, or prolonged mouth opening during a dental procedure can acutely stretch the disc attachments.
• Malocclusion and bite changes
• Significant changes in dental occlusion can alter condylar positioning and loading patterns, contributing to disc migration over time.
• Joint hypermobility
• Generalized ligamentous laxity or localized capsular laxity allows excessive condylar translation, increasing the likelihood that the disc will be displaced anteriorly.
• Postural dysfunction
• Forward head posture and rounded shoulders change the resting position of the mandible and increase strain on the masticatory muscles and joint structures. Research has confirmed a meaningful relationship between cervical spine dysfunction and TMJ disorders (Asquini et al., 2023, PMC10299279).
• Stress and muscle tension
• Psychological stress drives increased resting muscle tone in the masseters and temporalis, elevating intra-articular pressure and compressing the disc.
• Degenerative changes
• Osteoarthritis of the TMJ can erode the articular surfaces and alter disc morphology, making displacement more likely in older adults.

Why Physiotherapy Is the Recommended First-Line Treatment

International clinical guidelines consistently recommend conservative, non-invasive management as the first approach for TMJ disc displacement. A 2021 comprehensive review noted that current evidence supports primarily conservative multidisciplinary management strategies for temporomandibular disorders, reserving surgical options for cases that fail to improve after an adequate trial of conservative care (Aravindaksha et al., 2021, PMC8631581).

Physiotherapy is at the core of this conservative approach for several reasons:

• Evidence of effectiveness
• A 2023 systematic review of 15 studies concluded that the application of different physiotherapy techniques, both alone and in combination, is effective in controlling the primary symptoms of TMD, including pain, functional limitation, and reduced quality of life (Asquini et al., 2023, PMC10299279). A meta-analysis published in 2020 further demonstrated that manual therapy produces significant improvements in both pain and maximum mouth opening, and that combining manual therapy with therapeutic exercise maintains benefits over the long term (Martins et al., 2020, PMC7690916).
• Addresses root causes
• Unlike medications, which mask symptoms, physiotherapy targets the underlying muscle imbalances, joint restrictions, postural dysfunctions, and movement habits that perpetuate disc displacement.
• Low risk
• Physiotherapy carries virtually no risk of the complications associated with surgery or long-term medication use. It can be started early and adjusted progressively as the patient improves.
• Whole-person approach
• Physiotherapists assess not just the jaw but also the cervical spine, thoracic posture, breathing patterns, and psychosocial factors — all of which influence TMJ symptoms.

How Long Does Recovery Take?

Recovery timelines vary depending on whether the disc reduces (clicks back into place) or remains displaced (locked jaw), and on how long symptoms have been present before treatment begins.

• Disc displacement with reduction (clicking/popping)
• Many patients notice a significant decrease in clicking frequency and pain within 4 to 6 weeks of consistent physiotherapy. Full resolution of symptoms commonly occurs within 8 to 12 weeks. The 2024 rehabilitation study by Kijak et al. found that stomatognathic physiotherapy increased mandibular range of motion and reduced pain levels to the expected normal range, with the degree of improvement directly correlated to how soon treatment began after symptom onset (Kijak et al., 2024, PMC10856411).
• Disc displacement without reduction (locking)
  Acute locking episodes can sometimes be resolved in a single session through skilled manual manipulation of the mandible, restoring mouth opening immediately. More established cases may require 6 to 12 weeks of progressive mobilization, exercise, and splint therapy. The systematic review and meta-analysis by Martins et al. confirmed that manual therapy alone achieves significant medium-term improvements, and that adding therapeutic exercise extends those gains into the long term (Martins et al., 2020, PMC7690916).
• Chronic and complex cases
• Patients who have had symptoms for many months or who present with concurrent conditions (e.g., cervical dysfunction, fibromyalgia, chronic stress) may need 3 to 6 months of comprehensive care, including ongoing home exercise and lifestyle modification.

Treatment at Vaughan Physiotherapy

At Vaughan Physiotherapy, our approach to TMJ clicking, locking, and popping follows an evidence-based, multimodal framework. Every treatment plan is individualized after a thorough assessment of the jaw, cervical spine, posture, and contributing lifestyle factors.

• Assessment and Diagnosis
• Your first visit includes a detailed history and physical examination. We assess jaw range of motion (active and passive opening, lateral deviation, protrusion), palpate the masticatory muscles and TMJ for tenderness, listen for joint sounds, evaluate cervical spine mobility, and screen for postural contributors. This hands-on clinical assessment aligns with the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD), which the literature confirms as reliable and valid for the most common TMD diagnoses (Aravindaksha et al., 2021, PMC8631581).
• Manual TherapyManual therapy is a cornerstone of TMJ physiotherapy. Techniques include:
  • Intra-oral joint mobilization — gentle, graded mobilizations applied inside the mouth to restore normal condylar glide, distract the joint surfaces, and encourage disc repositioning.
  • Soft tissue release — targeted myofascial release of the masseter, temporalis, medial and lateral pterygoids, and suboccipital muscles to reduce hypertonicity and trigger points.
  • Cervical spine manual therapy — mobilization and manipulation of the upper cervical segments (C0-C3), which share neurological pathways with the TMJ via the trigeminocervical nucleus. Research shows that combining neck and TMJ manual therapy produces superior outcomes compared to routine treatment alone (Asquini et al., 2023, PMC10299279).
  • Mandibular manipulation for acute locks — a specific technique used to manually reduce a displaced disc and restore mouth opening in cases of acute DDwoR.
• Therapeutic ExerciseExercise is essential for maintaining the gains achieved through manual therapy and for long-term prevention of recurrence:
  • Controlled opening exercises — rhythmic, guided jaw opening within a pain-free range to retrain smooth condylar translation and disc tracking.
  • Isometric stabilization — gentle resistance exercises for the jaw muscles to improve neuromuscular control without overloading the joint.
  • Lateral pterygoid relaxation techniques — coordinated relaxation and contract-relax stretching to reduce the anterior pull on the disc.
  • Cervical and postural exercises — deep neck flexor strengthening, scapular retraction, and thoracic extension exercises to correct forward head posture and reduce downstream strain on the TMJ.
  • Neuromuscular re-education — training the patient to maintain a relaxed jaw posture with lips together, teeth apart, and the tongue resting on the palate.
• ModalitiesAdjunctive modalities are used when clinically indicated to accelerate pain relief and tissue healing:
  • Ultrasound therapy — delivers deep thermal energy to the joint capsule and retrodiscal tissues, improving blood flow and tissue extensibility.
  • Transcutaneous electrical nerve stimulation (TENS) — provides pain modulation by stimulating large-diameter sensory nerve fibres.
  • Heat and cold therapy — moist heat relaxes hypertonic muscles before manual therapy; cold packs reduce acute inflammation after mobilization.
  • Low-level laser therapy (LLLT) — promotes cellular repair and reduces inflammation in the retrodiscal tissue and masticatory muscles.
• Patient Education and Self-ManagementWe empower every patient with the knowledge and tools to manage their condition between visits and prevent future flare-ups:
  • Dietary modification — guidance on temporarily shifting to softer foods and cutting food into smaller pieces to reduce joint loading during the acute phase.
  • Habit awareness — identification and correction of parafunctional habits such as clenching, gum chewing, and nail biting.
  • Stress management — breathing techniques, progressive muscle relaxation, and mindfulness strategies to reduce stress-driven jaw tension.
  • Sleep hygiene — advice on sleep position (avoiding stomach sleeping) and addressing nocturnal bruxism through referral for a night guard when appropriate.

How to Prevent TMJ Clicking, Locking, and Popping

Prevention centres on reducing the mechanical and behavioural factors that strain the TMJ disc:

• Maintain a resting jaw posture — keep your lips gently closed, teeth slightly apart, and tongue resting on the roof of your mouth throughout the day.
• Limit extreme jaw movements — avoid biting into very large foods, prolonged wide-mouth yawning, and singing or shouting at extreme ranges.
• Manage stress proactively — incorporate daily relaxation practice, regular physical activity, and adequate sleep to keep resting muscle tone low.
• Address bruxism early — if you grind your teeth at night, consult your dentist about a stabilization splint and your physiotherapist about relaxation techniques.
• Optimize posture — set up your workstation ergonomically, take regular movement breaks, and perform daily cervical and thoracic mobility exercises.
• Stay active — general physical fitness supports healthy circulation to the joint structures and reduces systemic inflammation.
• Seek early treatment — research consistently shows that early intervention produces better outcomes. If you notice new clicking, pain, or restriction, book an assessment promptly rather than waiting for symptoms to worsen (Kijak et al., 2024, PMC10856411).

Frequently Asked Questions

• Is TMJ clicking dangerous?
• In most cases, TMJ clicking on its own — without pain or functional limitation — is not dangerous. A 2019 review confirmed that disc displacement with reduction can be present in up to one-third of asymptomatic individuals and that the TMJ structures often adapt well to altered disc positions (Braga et al., 2019, PMC6382319). However, clicking that is accompanied by increasing pain, progressive difficulty opening the mouth, or episodes of locking warrants a professional assessment to prevent the condition from advancing.
• Can TMJ clicking go away on its own?
• Yes, in some cases. Mild, painless clicking may resolve spontaneously as the disc and surrounding tissues adapt. However, if clicking is persistent, worsening, or accompanied by pain and stiffness, waiting can allow the condition to progress to locking or chronic pain. Physiotherapy can accelerate resolution and reduce the risk of progression.
• What is the difference between clicking and locking?
• Clicking occurs when the displaced disc slips back onto the condyle during jaw movement — the disc "reduces." Locking occurs when the disc stays displaced and blocks normal condylar translation, preventing the mouth from opening fully. Clicking is associated with disc displacement with reduction, while locking is associated with disc displacement without reduction.
• Do I need surgery for TMJ disc displacement?
• The overwhelming majority of patients do not need surgery. Conservative treatment — including physiotherapy, exercise, education, and sometimes a stabilization splint — is effective for most people. A 2023 systematic review confirmed that physiotherapy techniques are effective in controlling the primary symptoms of TMD (Asquini et al., 2023, PMC10299279). Surgery is reserved for the small minority of cases that fail to respond to a thorough trial of conservative management.
• How many physiotherapy sessions will I need?
• This depends on the severity and chronicity of your condition. Patients with recent-onset clicking often improve within 4 to 8 sessions over 6 to 8 weeks. Acute locking may respond within 1 to 4 sessions if treated early. More complex or long-standing cases may require 10 to 16 sessions over several months. Your physiotherapist will set clear goals and reassess progress regularly.
• Can a physiotherapist unlock my jaw?
• Yes. Physiotherapists trained in TMJ management can perform specific manual techniques — including mandibular distraction and translation manoeuvres — to reduce a displaced disc and restore mouth opening. Early mandibular manipulation has been shown to exert an immediate effect in increasing maximum mouth opening in patients with acute disc displacement without reduction (Kijak et al., 2024, PMC10856411).
• Should I stop eating hard foods if my jaw clicks?
• During an active flare-up, temporarily switching to softer foods reduces the mechanical load on the joint and allows irritated tissues to calm down. However, the long-term goal of physiotherapy is to restore full, pain-free jaw function — including the ability to eat a normal diet. Your physiotherapist will guide you on when to gradually reintroduce harder textures as your symptoms improve.

Take the Next Step Toward a Pain-Free Jaw

TMJ clicking, locking, and popping can be disruptive, but they do not have to be permanent. With skilled physiotherapy treatment, most patients experience meaningful improvement within weeks and full resolution within a few months. At Vaughan Physiotherapy, our experienced team is ready to assess your jaw, identify the root cause, and build a personalized treatment plan to get you back to comfortable, confident movement.

Book your assessment today:

• Phone: 905-669-1221
• Location: 398 Steeles Ave W, Unit 201, Thornhill, ON
• Website: vaughanphysiotherapy.com