A jaw that feels locked open or shifted out of alignment is almost always a dislocation that needs to be repositioned by a medical professional, not at home. The ball of your jaw joint has slipped forward past a bony ridge on your skull, and the surrounding muscles have clamped down in spasm, trapping it there. While there are a few things you can try in the moment to ease it back, a true dislocation typically requires trained hands to resolve safely.
What Actually Happens When Your Jaw Dislocates
Your jaw connects to your skull at two hinge points just in front of your ears, called the temporomandibular joints (TMJ). Each side has a rounded knob at the top of the jawbone that sits in a shallow socket. When you open your mouth, those knobs slide forward along a track. Normally they glide back when you close. In a dislocation, one or both knobs slide too far forward and get stuck in front of a bony bump called the articular eminence. The powerful chewing muscles then go into spasm, locking the jaw in that open or shifted position.
This is the most common type of jaw dislocation, and it usually happens from something surprisingly mundane: yawning too wide, biting into a large sandwich, laughing hard, or holding your mouth open during a long dental procedure. It can also happen from a blow to the face, though trauma raises the possibility of a fracture rather than a simple dislocation.
How to Tell If It’s Dislocated or Broken
The distinction matters because a fracture often requires surgery, while a dislocation can usually be manually guided back into place. Both are painful, but they look and feel different.
Signs that point to a dislocation:
- Inability to close your mouth, with your jaw locked in an open or forward position
- Drooling because you can’t bring your lips together
- Difficulty talking
- Bite that feels “off” or crooked
- Pain in front of the ear that worsens with any attempt to move the jaw
Signs that suggest a fracture instead:
- Bleeding from the mouth
- Bruising and swelling of the face
- Numbness in the lower lip or chin
- A visible lump or deformity along the cheek or jawline
- Loose or damaged teeth
If you have difficulty breathing, heavy bleeding, or numbness spreading across your face, that’s an emergency. Go to an ER immediately.
What You Can Try at Home
If your jaw has shifted slightly and you suspect it’s a partial dislocation (sometimes called a subluxation), where it feels stuck but you can still partially close your mouth, a few gentle techniques may help it slip back on its own.
First, try to relax. Muscle spasm is what keeps the jaw trapped, so panic and clenching make things worse. Apply a warm, moist towel to both sides of your jaw for several minutes to encourage the muscles to loosen. While the warmth works, consciously try to let your jaw hang slack rather than forcing it closed. Some people find that gently placing both thumbs on the lower back teeth (or the gum ridge behind them), pressing downward with light steady pressure, and then easing the chin backward can coax the joint back into its socket. The key direction is down first, then back. Never force it.
If the jaw doesn’t slide back within a few gentle attempts, stop. Repeated forceful attempts risk damaging the joint, tearing the disc that cushions it, or worsening a fracture you may not realize you have.
What Happens When a Doctor Reduces It
The clinical procedure to reposition a dislocated jaw is called manual reduction, and it’s the same basic motion described above but performed by someone who knows exactly how much force and direction to use. A doctor or emergency provider will typically stand in front of you, place their thumbs along your lower back molars, press the jaw downward to clear the bony ridge, and then guide it posteriorly back into the socket. You’ll often feel a distinct pop or clunk when it seats back into place, followed by almost immediate relief.
The challenge is that your chewing muscles are some of the strongest in your body, and when they’re in spasm, they fight every attempt to move the jaw. For this reason, providers often give a muscle relaxant, a sedative, or local anesthesia before attempting the reduction. In stubborn cases, a small injection of numbing medication near the joint itself can relax the surrounding muscles enough for the jaw to slide back. The whole process, once the muscles cooperate, takes only seconds.
Recovery After Reduction
Once the jaw is back in place, the joint and surrounding muscles will be sore for several days to a couple of weeks. During that window, you’ll want to stick to soft foods, avoid opening your mouth wide, and skip anything that requires heavy chewing. Yawning is the biggest culprit for re-dislocation in the days after, so try to stifle wide yawns by pressing a fist gently under your chin.
Your doctor may recommend an over-the-counter anti-inflammatory for pain and swelling. In some cases, a short course of a prescription muscle relaxant helps keep the jaw muscles from spasming again while the joint heals. Alternating ice and warm compresses on the joint area, 15 to 20 minutes at a time, can help with both swelling and stiffness.
Why Some People Dislocate Repeatedly
If your jaw has dislocated once, the ligaments around the joint are now stretched, making it easier to happen again. Some people develop a pattern of recurrent dislocation triggered by everyday activities like yawning or eating. Certain factors raise the risk: naturally loose joints (hypermobility), a shallow joint socket, or long-term teeth grinding that gradually wears down the joint structures.
For people who experience repeated dislocations, treatment options range from physical therapy exercises that strengthen the muscles supporting the joint, to injections that limit excessive forward movement of the jaw, to surgical procedures that build up the bony ridge the jaw slips over. The right approach depends on how often it happens and how easily the jaw goes back in each time.
The Bottom Line on Doing It Yourself
A mildly shifted jaw that you can still partially close may respond to warmth, relaxation, and gentle downward-then-backward pressure. A fully locked-open jaw where you cannot close your mouth at all is a true dislocation that almost always needs professional reduction. Attempting to force a fully dislocated jaw back carries real risks: you could fracture the bone, damage the cartilage disc inside the joint, or injure the nerves that provide sensation to your lower face. The safest path for a locked jaw is to get to an urgent care or emergency department where the reduction can be done quickly, with appropriate pain control, and with imaging available to rule out a fracture.