Checking at home how many fingers fit between your teeth only tells part of the story. Our assessment, an option from Burlington, puts that number in context, looks for the cause and explains which care, if any, suits the findings.
A quick finger check in the mirror is often how people confirm that something has changed. It is a reasonable first observation, but it can’t explain why your jaw is limited, and repeating it many times a day may irritate whatever is already sore. What helps far more is noticing how the restriction shows up in real life: in bites of food, in brushing, in yawning.
Opening can be reduced for many different reasons. Tight or painful chewing muscles, a jaw joint that catches, an infected tooth or inflamed gum, a recent injury and the effects of earlier head and neck treatment are all possibilities. The timing, any pain or swelling, and what was happening just before it started all shape which explanation is most likely.
When you come in from Burlington, the dentist will look at how your jaw moves within its comfortable range. You won’t be asked to beat your own best. Instead, describe what is easy, what has changed and whether eating, drinking or cleaning your teeth is becoming harder.
Pass these details on when you call. If the limit has worsened suddenly or swelling has developed, mention it right away rather than waiting for a scheduled appointment.
Is there a sudden block, a gradual tightening or a limit that changes each time? Has the jaw ever stayed stuck open or shut, and for how long? Describing this is enough. Please don’t keep re-creating a painful catch just to confirm it.
Tell us which tasks are affected and whether you are still drinking and eating enough. If the restriction stops you drinking or makes cleaning impossible, ask for prompt advice. Practical examples also guide the clinician in planning an exam that suits your range.
Recent dental treatment, a fall or knock, swelling and any history of jaw problems are all relevant. Earlier surgery or radiotherapy to the head and neck is important to mention. These details change what needs checking and whether another provider should be involved.
If your jaw has locked, has suddenly become severely limited, or you can’t eat or drink, seek urgent assessment. Problems breathing or swallowing, swelling that is spreading fast or affecting the eye, need emergency medical care; call 911 if the situation is immediate.
The dentist may record your opening in millimetres, which is more consistent than a finger check. Even so, that figure is one strand of evidence. Ask how it connects with what you’ve described and with the rest of the examination, and whether a probable cause has appeared. If doubt remains, the plan should state what would resolve it.
The visit also covers how to keep dental treatment workable while your jaw is limited. Mention any position or action that triggers difficulty, and agree on a signal for stopping. Should the exam be incomplete today, ask which parts were checked safely and how the rest will be followed up.
Patient information: NIDCR — assessment and management of temporomandibular disorders
The clinician observes and notes how your jaw opens and listens as you describe tightness or pain. Speak up when comfort runs out. The goal is a clear pattern, not a contest, and nobody needs you to force your jaw through real discomfort.
The examination may include teeth, gums, the chewing muscles and nearby areas. Ask what findings back up the explanation offered and whether more tests would help. Labelling every restriction a joint problem can mean missing something that needs other care.
Agree on what better would look like for you: perhaps easier brushing, or a full sandwich without strain. Choose a review date and decide which changes should bring you back sooner. Plans with a clear purpose and clear limits are easier to keep to.
You can explain the problem without repeating the movement that hurts. Let us know when booking if opening for an exam is difficult, so the visit can be arranged with that in mind.
Describe whether the restriction came on abruptly or over time and whether it is improving, getting worse or varying. We discuss injuries, recent treatment, medicines and your general health. Copies of records or a contact for another treating team can fill in gaps.
The dentist sees what your jaw can do comfortably and checks for signs related to the complaint. Show where symptoms are felt and whether they’re typical for you. Breaks are fine; if some of the exam can’t be completed, that should be stated rather than glossed over.
You’ll hear what looks likely and what remains uncertain. Imaging or referral is suggested when it would answer a defined clinical question. Ask what difference a test could make and whether dental, medical or specialist assessment is needed before management starts.
Confirm interim advice, the purpose of any treatment and how progress will be measured. If exercises are recommended, ask for clear instructions matched to your diagnosis. Know who to contact if things worsen or movement becomes more painful.
Home advice should come from your assessment. Exercises designed for recovery after a specific operation can be the wrong choice for a new restriction without a clear cause, even when both limit opening.
Avoid stretching with objects, hard pushing or repeatedly testing your limit. If you are given a supervised movement routine, make sure you know the technique, frequency and when to stop. If it worsens symptoms, contact the clinician rather than adding repetitions.
Jot down meaningful changes in meals, drinking, brushing and comfort, plus roughly when symptoms come on. That gives a useful picture at review. Ordinary activities reveal more than measuring each opening or setting off a lock deliberately.
Tell the team if you can’t clean somewhere or are struggling to take in enough food and fluid. They can talk through adjustments or more assessment. Don’t put off care you need on the belief that your jaw must loosen before planning can begin.
Patient information: Guy's and St Thomas' — jaw opening advice after relevant medical treatment
These answers help you prepare. A severe new restriction, or difficulty keeping up with food and fluids, needs a phone call for prompt advice rather than an online request alone.
Call (905) 876-4488 and our Bronte Street team will help arrange an assessment. Do tell them about sudden locking, swelling, a recent injury or difficulty eating and drinking, so the urgency is clear and the right next step can be planned.
Causes, the right care, any need for referral and the course of recovery all vary. Online requests are intended for non-urgent enquiries and cannot stand in for urgent assessment when symptoms are severe or worsening.
