Recent Research


Our clinic previously undertook research into the effectiveness of a 6 weeks course of physiotherapy treatment on conditions affecting the neck & jaw. Following this study, our aim is to generate a publishable paper detailing the change in pain levels and range of motion after a 6 week treatment period. This will also identify clinical patterns which will help diagnose the cause of headache, neck or jaw pain. 

What's Involved?

There will be a series of surveys given both pre & post treatment. The surveys given will depend on assessment with the Physiotherapist. Most of the surveys will be emailed and can be completed at home. They have been designed to take less than 2 minutes each so that it is not a big time commitment. These surveys will be completed at first assessment and 6 weeks following first assessment. These initial results will allow us to contrast the change in range of motion with the change in the survey scores. There is also an option to review at 3 months & 6 months to determine the longer term effects of treatment. 

Will Treatment or Privacy be Compromised?

Treatment will not be compromised by participating in the study as we are not trialling any new techniques but instead, are quantifying the overall effect of our existing treatment structure on pain and/or movement restrictions. As it is an in-clinic trial, there is no placebo treatment or blinding of the Physiotherapists. Privacy is of the utmost importance and all patients will be de-identified.

Opt Out

Patients can opt out of the trial at any stage and participation in no way affects their right to choose their health provider, and is in no way a contract locking the patient into unnecessary or unwanted treatment. If the treatment does not take 6 weeks or if the patient chooses not to/are unable to continue with treatment, an email will still be sent at the 6 week mark with a link to complete the second round of surveys. Any data that is collected is meaningful and will help us determine the best treatment plans for the future.

TMD Study


2016: Pilot Study

In 2016, The HNJ Clinic launched a provisional trial to determine the effect of physiotherapy on jaw range of motion and pain.  We asked our patients who identified as suffering from Temporo-Mandibular Dysfunction (TMD) to complete a Temporomandibular Joint Disability Index (TMJDI) Survey (a validated research tool).  We then measured their active opening range of motion of their jaw to get an objective baseline measure to correlate with the results of the TMJDI.  The patient received treatment for their condition for 6 weeks with their range of motion being re-measured weekly and TMJDI re-taken at the 6-week mark.

Our results were better than expected.  On average, the range of motion changed from 30mm to 45mm of opening and the TMD disability scores reduced from 13 to 6.  What was more interesting is that of the 77 participants who were diagnosed as or self-identified as TMD sufferers, 57 actually were diagnosed by their treating physiotherapist as having a cervical spine primary cause of their pain and had treatment directed predominantly to their neck.  Treating the cervical spine still had a positive effect on the TMJ disability index scores (with no significant change in jaw range) but not as big an effect as the 20 participants who received only jaw treatment. 


Does Physiotherapy Help TMJ Pain?

Yes. It also helps headaches.  Our results show a 50% increase in range of motion over a 6-week period with a statistically significant reduction in reported pain.  Our study was distorted by not correctly identifying neck vs jaw conditions, which made our results look worse than they are. If we had of excluded necks from our jaw study, the TMD Score would have gone from an average of 16 to an average of 5.  This is an incentive to remodel our study in 2017. 

Is measuring range of motion helpful in diagnosing jaw problems?

Yes.  Of the 20 patients who exclusively received jaw treatment, only 1 participant started with more than 40mm of opening range, with an average opening range of 30mm.  Of the group who received neck treatment, only 1 patient started with opening range of less than 40mm with the average opening range equaling 45. 

From this, we can use range of motion as a clinical indicator to predict whether jaw pain is originating in the neck or coming from the jaw.  Further study is required to more accurately determine the exact tipping point, but it appears 40mm is a good guideline.

Can we Change the World Based on These Results?

No, sadly, more research is required. We need to make our study more robust and determine a research model that can ultimately be published in the appropriate medical journal.  It’s a good start though.

Past Findings

In 2011, treatment results from 50 consecutive patient's were analysed, looking at initial range of motion before treatment and subsequent opening range of motion over the next 6 appointments.

Initial opening movement measurements ranged from 15.6mm to 40mm.

Range of motion overall improvement ranged from 4.5mm to 33mm.

Treatment techniques used included caspular stretches, neuro-muscular releases, postural retraining for the neck and mouth, cervical spine releases and education.

Results can be seen below: