How to Reduce a Dislocated Jaw
Learn the emergency manual reduction technique for an anterior TMJ dislocation using thumb placement on lower molars, downward traction, and post-reduction stabilization.
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🧰 Required Tools & Equipment
- ✓ Thick gauze roll or cohesive wrap
- ✓ Disposable medical gloves
- ✓ Rigid high-back chair or solid wall
- ✓ Ice pack with cloth cover
📦 Materials & Supplies
- ✓ 4x4 sterile gauze pads
- ✓ Elastic bandage wrap (Barton style)
⚠️ Safety Checkpoints & Warnings
- • Do not attempt reduction if jaw dislocation was caused by high-impact blunt trauma, which may indicate a mandibular fracture.
- • Always heavily pad thumbs with dense layers of gauze to prevent puncture or crush injuries when the jaw snaps shut upon reduction.
- • Cease manual pressure immediately and seek emergency medical care if the jaw does not reposition after two controlled attempts.
📋 Step-by-Step Guide (6 Steps)
Position and Stabilize the Patient
Seat the patient upright in a sturdy chair with their head resting firmly against a solid wall or headrest. Stand directly in front of the patient at eye level to maintain direct leverage. Ensure the patient's head cannot tilt backward during downward manual pressure.
- • Patient is sitting upright with occiput pinned firmly against a flat wall or rigid headrest
- • Rescuer is standing squarely in front of the seated patient with clear access to the oral cavity
- • Allowing the patient to sit on a rolling chair or soft sofa that absorbs downward force
- • Standing behind the patient instead of directly in front
Pad and Protect Rescuer Thumbs
Wrap both of your thumbs in multiple thick layers of medical gauze or cohesive bandage tape. Put on a pair of tight medical gloves directly over the padded thumbs to seal the wrap. This protects your thumbs from significant bite force when the masseter muscles involuntarily contract upon joint reduction.
- • Both thumbs covered in at least 4 to 6 layers of dense, tight gauze wrap
- • Gloves fitted securely over padded thumbs without tears
- • Using bare thumbs or single-layer thin gauze
- • Wrapping thumbs so tightly that blood circulation to fingertips is restricted
Place Thumbs on Lower Molars
Instruct the patient to relax their facial muscles and breathe slowly through their nose. Insert your padded thumbs into the mouth and seat them directly onto the occlusal surfaces of the bilateral lower molars, lateral to the teeth along the jawline. Curl your remaining four fingers on each hand firmly under the exterior inferior border of the mandible.
- • Thumbs positioned flat along the lower back molars on both left and right sides
- • Fingers wrapped securely under the exterior underside of the jawbone
- • Placing thumbs on premolars or front incisors where leverage is ineffective
- • Failing to hook fingers around the external base of the mandible
Apply Downward Traction and Posterior Glide
Exert firm, continuous, downward force with your thumbs to overcome the spasm of the masseter and pterygoid muscles. Once the mandibular condyles move downward clear of the articular eminence, guide the jaw gently backward and upward using your fingers beneath the chin. You will feel a distinct release and glide as the condyles slide back into the glenoid fossa.
- • Rescuer arms locked straight, pressing down using body weight
- • Mandible shifts visibly downward by roughly 5 to 10 millimeters, then glides back into resting position
- • Using jerky or sudden violent force rather than sustained, steady downward pressure
- • Pushing backward before achieving sufficient downward clearance
Verify Bite Alignment and Occlusion
Carefully remove your thumbs from the mouth immediately upon reduction. Ask the patient to gently bring their teeth together and confirm that their dental bite aligns naturally without pain or obstruction. Check that the chin sits symmetrically centered along the facial midline.
- • Patient's lips can close completely over teeth without strain
- • Upper and lower teeth meet in the patient's normal resting occlusion
- • Chin aligns symmetrically with the nasal bridge
- • Leaving thumbs in the oral cavity during bite verification
- • Failing to check for lateral crossbite or asymmetry
Apply Supportive Bandage and Post-Care Rest
Wrap an elastic bandage under the chin and over the crown of the head in a Barton-style loop to provide gentle upward support without overtightening. Place a covered cold pack over the temporomandibular joint for 15 minutes to reduce swelling. Instruct the patient to maintain a strictly soft or liquid diet and suppress yawning by supporting their chin for at least one week.
- • Elastic wrap securely cradles the jaw and loops over the top of the head
- • Cloth-covered ice pack held lightly against the TMJ area in front of the ears
- • Wrapping the bandage across the airway or too tightly around the throat
- • Allowing the patient to chew hard foods or talk excessively immediately post-reduction
Credit: inspired by an original tutorial by Zack D. Films — watch the original on YouTube.
Don’t have everything?
- No Thick gauze roll or cohesive wrap? Clean cotton dish towels folded into thick protective pads over thumbs
- No Elastic bandage wrap (Barton style)? Long cotton scarf or bandana tied securely from chin to crown of head