What it is
Capsulitis or synovitis is inflammation of the joint capsule or lining of the TMJ. It follows overload, minor trauma, or a locking episode. Pain is local and sharp, with a biting or wide opening sensation.
Care calms inflammation, restores smooth functioning, and guides a return to a full diet and voice use.
What happens when it occurs
Inflammation increases sensitivity. Guarding restricts translation and creates deviation. Early protection and gradual motion improve comfort and function.
Common causes and risk factors
- Recent increase in chewing or speaking load
- Jaw trauma or locking incident
- Bruxism and stress
Who is most affected
Adults and adolescents after a flare in jaw use.
Typical symptoms
- Local joint pain on biting or yawning
- Opening deviation and stiffness
- Tender joint line
When to seek care
Seek care if pain limits your ability to eat or talk. Urgent dental review for fever, severe swelling, or dental infection.
How we diagnose
History, joint palpation, compression and distraction tests, and opening pattern. We screen bite, cervical contribution, and habits. Imaging only for persistent or atypical cases.
Management
- Relative rest and a soft diet during acute pain
- Cold or heat as tolerated and medication as advised
- Controlled opening and lateral glide drills
- Neck and scapular endurance to offload the joint
- Short course of splint use in selected cases
Rehabilitation milestones
Phase 1 days 0–7: pain control, soft diet, gentle range.
Phase 2 weeks 1–4: expand opening and chewing loads, endurance drills.
Phase 3 weeks 4–8: full diet and voice tasks by criteria.
Readiness to progress
- Opening without sharp joint pain
- Chewing normal foods without flare
- Sleep undisturbed
Long-term care
- Balanced chewing and bite care
- Habit awareness during stress
- Weekly maintenance of neck and scapular strength
Australia snapshot
- Common short-term diagnoses in Australian TMD clinics
- Responds well to conservative care
- Women present more often than men
Latest insights
Inflammation settles when the load is right and motion is smooth.
Neck and scapular strength assist joint control.
