Orthodontic appliances may alter jaw-joint anatomy, but evidence is weak
A systematic review found imaging changes in growing patients with a recessed lower jaw; some studies reported no statistically significant changes.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Functional orthodontic appliances were associated with changes in the shape and position of the mandibular condyle, the part of the lower jaw forming the joint. Some studies found no statistically significant changes. Overall evidence was rated low, so these imaging findings do not establish predictable anatomical changes or better jaw function for individual patients.
The review rated the overall evidence as low. The abstract gives no effect sizes, comparison-group details or follow-up periods, and it does not report pain, chewing ability or other patient-centered outcomes.
What imaging showed
Reported changes included forward shifts of the condyle, changes in its shape, movement of the joint disc and remodeling of the joint socket. These are anatomical observations rather than direct measures of comfort or function.
Why certainty matters
The review combined randomized trials with studies that followed patients without random assignment. Both low and moderate risks of bias were reported, and the mixed findings limit how confidently the anatomical results can be interpreted.
The original publication
Condylar morphology and position changes following functional appliance treatment: a systematic review.
Mbyayingabo D, Mugabo E, Izeldin S et al.
Eur J Orthod · 2025
- PubMed ID
- 41054808
- Record checked
AI-assisted research and writing. This explains one selected publication; it is not a complete review of everything known. Our approach.
One more question, understood.
Keep track of the research you’ve explored.