Temporomandibular disorders (TMD) are a group of conditions that affect the temporomandibular joint (TMJ)—the hinge that connects your jaw to your skull—and the muscles responsible for chewing. Because the jaw is one of the most complex joints in the body, capable of both sliding and rotating, symptoms can vary widely from person to person. For some, it is a dull ache in the cheek; for others, it is a sharp click when eating or a feeling that the jaw is 'stuck.'
If you are experiencing these symptoms, a clinical assessment is the first step toward understanding the underlying cause. At Union Health Network, our approach to TMJ treatment in Richmond Hill focuses on a musculoskeletal evaluation to determine how the joint, muscles, and cervical spine (neck) are functioning together. This article outlines what you can expect during a professional TMJ assessment and how the findings guide conservative care.
The Framework for Assessment: DC/TMD
Clinical assessments for jaw pain are often guided by the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). This is an internationally recognized, evidence-based framework used by healthcare providers to categorize TMD into two main groups: pain-related disorders (such as muscle pain or joint pain) and intra-articular disorders (issues within the joint itself, like disc displacement) (Schiffman et al., 2014).
Using this framework ensures that the assessment is thorough and looks beyond just the site of pain. It acknowledges that jaw symptoms are often influenced by a combination of physical, psychological, and social factors—a concept known as the biopsychosocial model of pain.
Components of a TMJ Assessment
A comprehensive evaluation typically includes three main phases: the clinical history, the physical examination, and functional testing.
1. Clinical History
The assessment begins with a detailed discussion of your symptoms. Your provider, such as Dr. Shahab Entezami, will ask questions to clarify the nature of the discomfort:
- Location: Is the pain felt directly in front of the ear, in the temples, or along the jawline?
- Triggers: Does the pain worsen with chewing, yawning, or speaking?
- Locking: Have you ever experienced a 'closed lock' (inability to open fully) or an 'open lock' (inability to close)?
- Associated Symptoms: Do you also experience headaches, ear fullness, or neck stiffness? The TMJ and neck pain connection is a common factor in many cases.
2. Physical Examination
During the physical exam, the provider uses palpation (gentle pressure) to identify sensitive areas. This includes checking the masseter and temporalis muscles (the primary chewing muscles) and the joint space itself. Evidence suggests that a patient report of 'familiar pain' during palpation is a key diagnostic indicator for TMD (Schiffman et al., 2014).
3. Range of Motion and Functional Testing
Your provider will measure how far you can open your mouth, both comfortably and at a maximum stretch. A normal opening is typically between 40 and 55 millimetres. They will also observe the 'path' of the jaw as it opens—looking for deviations (where the jaw shifts to one side and stays there) or deflections (where it shifts and then returns to the centre).
Listening for joint sounds is also part of the process. While clicking or popping without pain is common and often does not require treatment, these sounds provide information about the position of the articular disc within the joint (Gauer & Semidey, 2015).
Contributing Factors to Jaw Dysfunction
A TMJ assessment also looks for 'contributing factors' that may be placing extra stress on the system. These may include:
- Bruxism: Habitual clenching or grinding of the teeth, often during sleep.
- Postural Habits: Prolonged forward-head posture can alter the resting position of the jaw and increase tension in the suboccipital muscles at the base of the skull.
- Stress: High levels of stress can lead to increased muscle guarding and tension in the jaw and neck.
- Cervical Spine Function: Because the nerves and muscles of the neck and jaw are closely linked, restricted movement in the upper neck can sometimes manifest as jaw discomfort.
Conservative Management Options
Once the assessment is complete, a management plan is developed. Current clinical guidelines strongly favour conservative, non-invasive approaches as the first line of care for most TMD cases (Gauer & Semidey, 2015). Depending on the individual assessment, treatment may include:
- Manual Therapy: Gentle mobilization of the jaw joint and soft tissue therapy for the chewing muscles.
- Intra-oral Myofascial Release: Specific techniques applied to the muscles inside the mouth to reduce tension.
- Exercise Therapy: Tailored movements to improve jaw coordination, strength, and range of motion.
- Acupuncture: Neuro-functional acupuncture may help some patients manage the sensitivity of the nerves surrounding the jaw.
Evidence-Based Self-Management
Self-care is a cornerstone of TMD recovery. Research indicates that patients who actively participate in self-management often see significant improvements in their symptoms (Mayo Clinic, 2024). Recommended strategies include:
- Thermal Therapy: Applying moist heat to chronic, dull aches or cold packs to acute, sharp pain for 15–20 minutes (TMJ Association, 2026).
- Dietary Modification: Choosing softer foods (like pasta, eggs, or smoothies) during a flare-up to rest the joint.
- Jaw Resting Posture: Practicing the 'n' position—tongue gently resting on the roof of the mouth, teeth slightly apart, and lips relaxed.
When to Seek Further Referral
While most jaw pain responds well to conservative musculoskeletal care, certain 'red flags' indicate that a referral to a dentist, physician, or specialist may be necessary. These include:
- A history of recent trauma or fracture to the face or jaw.
- Sudden, complete inability to open or close the mouth (acute locking).
- Unexplained weight loss, fever, or persistent swelling.
- Pain that does not respond to 6–8 weeks of conservative care (NICE CKS, 2025).
Frequently Asked Questions
Do I need an X-ray or MRI for my jaw pain? In most cases, a clinical assessment is sufficient to begin conservative care. Imaging like an MRI or CT scan is typically reserved for cases involving significant trauma, suspected systemic disease, or symptoms that do not improve with initial treatment (Mayo Clinic, 2024).
Can my neck cause my jaw to hurt? Yes. The upper cervical spine and the TMJ share common nerve pathways. Dysfunction in the neck can lead to referred pain in the jaw, and vice versa. This is why a thorough assessment should always include the neck.
Is jaw clicking always a problem? Not necessarily. Many people have jaw clicking without any pain or restricted movement. If the click is painless and does not interfere with function, it is often considered a normal variation and may not require active treatment.
References
- Schiffman E, et al. "Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) for Clinical and Research Applications: recommendations of the International RDC/TMD Consortium Network and Orofacial Pain Special Interest Group." Journal of Oral & Facial Pain and Headache, 2014. https://pmc.ncbi.nlm.nih.gov/articles/PMC4478082/
- Gauer RL, Semidey MJ. "Diagnosis and Treatment of Temporomandibular Disorders." American Family Physician, 2015. https://www.aafp.org/afp/2015/0315/p378
- Mayo Clinic. "TMJ disorders - Diagnosis and treatment." 2024. https://www.mayoclinic.org/diseases-conditions/tmj/diagnosis-treatment/drc-20350945
- The TMJ Association. "Self Care: First, Here's How to Help Yourself." 2026. https://tmj.org/living-with-tmj/self-care
- National Institute for Health and Care Excellence (NICE). "Temporomandibular disorders (TMDs): Assessment." 2025. https://cks.nice.org.uk/topics/temporomandibular-disorders-tmds/diagnosis/assessment
If jaw, back or joint symptoms are affecting your daily activities, a clinical assessment may help clarify the possible contributing factors and appropriate care options. Union Health Network is accepting new patients in Richmond Hill.