What it is
Post‑traumatic TMD (Sport‑related Jaw Impact) presents in growing adolescents who load the jaw through braces, bite changes, or sports. Pain often relates to rapid growth, new dental forces, or habits.
Care protects irritated tissues, guides chewing and speech loads, and builds neck and scapular support during growth.
What happens when it occurs
Growth alters the relationships between bone and soft tissue. New forces from braces or bite changes, as well as higher training loads, increase muscle effort. Calm loading and steady practice restore tolerance.
Common causes and risk factors
- Growth spurts and orthodontic adjustments
- High voice or chewing loads at school or sports
- Stress, poor sleep, and mouth breathing
Who is most affected
Adolescents in Australia. Common in contact and field sports and in students with recent braces.
Typical symptoms
- Jaw ache with chewing or talking
- Clicking or brief locking
- Morning stiffness or fatigue
When to seek care
Seek care if pain limits eating, speech, or school. Urgent dental review for trauma, tooth fracture, or infection signs.
How we diagnose
History, opening path, joint sounds, and cervical and scapular assessment. Collaboration with the treating dentist is a routine practice.
Management
- Education and reassurance
- Soft diet during flares and chewing symmetry practice
- Opening control and lateral stability
- Neck and scapular endurance with short sets
- Load planning around orthodontic adjustments
Rehabilitation milestones
Phase 1 weeks 0–2: pain control and control drills.
Phase 2 weeks 2–6: endurance for chewing and voice, sport load adjustments.
Phase 3 weeks 6–12: normal diet and activities by criteria.
Readiness to progress
- Opening path midline
- Chewing without next‑day pain
- Full school days are comfortable
Long-term care
- Brief daily drills
- Balance school and sport loads
- Regular review during orthodontic phases
Australia snapshot
- Seen in school and club settings across Australia
- Girls present more often than boys
- Most recover with conservative care and coaching
Latest insights
Growth, combined with new forces, requires patience and planning.
Short, frequent sets are more effective than occasional, long sessions.
