You wake up with a sore jaw. Your teeth ache. Your temples throb. You've tried mouthguards, jaw exercises, and telling yourself to relax. Nothing sticks.
If that sounds familiar, you're not broken. Your jaw is doing exactly what it evolved to do: protect you.
Jaw clenching is one of the most common physical signs of a nervous system stuck in survival mode. Research shows that chronic stress and trauma can keep your body in a constant state of high alert, and your jaw is often the first place that tension lands.
What is the primary reason chronic jaw clenching often persists despite traditional treatments like mouthguards?
Select one answer.
The jaw is a trauma messenger
Your jaw is wired directly to your brainstem and the trigeminal nerve, the fifth cranial nerve responsible for facial sensation and motor control. When your nervous system perceives a threat — even an old one your brain hasn't let go of — it signals your jaw muscles to brace.
This isn't a bad habit. It's a survival reflex. In moments of danger, mammals clench to prepare for impact or to suppress sounds that might attract predators. Your body doesn't know the difference between a real threat and a memory of one.
According to polyvagal theory, developed by Dr. Stephen Porges, the autonomic nervous system continuously scans for safety and danger. When it detects threat, it shifts into a protective state. Jaw clenching is part of that "armor" response.
Why traditional fixes fall short
Mouthguards, bite splints, and jaw stretches can offer temporary relief. But they treat the symptom, not the cause.
If your nervous system is still signaling danger, your jaw will keep clenching. You're asking your jaw to relax while your entire system is still holding a stress response. It's like trying to untie a knot by pulling on one end of the rope.
"This is such a common symptom amongst trauma survivors! It's almost a constant brace and guarding the jaw is also linked to the pelvic floor! Interestingly enough the pelvic floor are closely connected through the nervous system and the body's fascial and muscle networks. A lot of people who clench their jaw hold tension in their pelvic floor." — Kelly Pienaar
The real question: what is your body trying to protect?
When you shift from "how do I stop clenching" to "what is my body trying to protect," everything changes. The clenching isn't the problem — it's the solution your nervous system found to keep you safe.
Kelly Pienaar, a trauma therapist specializing in nervous system regulation, puts it this way: in a counseling session, the main question when someone complains about jaw clenching becomes "what is the body trying to protect."
Three steps to start unwinding jaw tension
1. Name the state. When you notice your jaw tightening, pause. Say to yourself: "My nervous system is trying to protect me right now." This simple acknowledgment can begin to shift your system out of survival mode.
2. Orient to safety. Look around your environment. Find three things that are neutral or pleasant. This activates the ventral vagal pathway, the part of your nervous system that supports calm connection.
3. Work with the whole body. Jaw tension rarely travels alone. The main areas where protective tension shows up are the jaw, neck, diaphragm, shoulders, and pelvic floor. Gentle movement, humming, or sighing can help release tension across these connected areas.
When to seek professional support
Jaw clenching can have multiple contributing causes, including sleep disorders, dental alignment, certain medications, anxiety, and other medical conditions. A thorough assessment helps determine what's contributing for each individual.
But if you've tried the mechanical fixes and the tension keeps returning, it's worth exploring the nervous system connection. Trauma-informed therapy can help your body learn that it is safe again, so it no longer needs to maintain that constant state of tension.
How the Resident Expert Can Help
Kelly Pienaar offers online counseling, coaching, and wellness services focused on nervous system regulation and trauma recovery. Her approach helps clients move from stress and overwhelm to stability and self-trust. If you're ready to explore what your jaw clenching is trying to protect, visit Kelly Pienaar's website to learn more about her trauma-informed approach.
Quiz
What is the primary reason chronic jaw clenching often persists despite traditional treatments like mouthguards?
A. The jaw muscles are too strong to be relaxed by mechanical devices B. The nervous system remains stuck in a protective state, signaling the jaw to keep bracing C. Mouthguards actually increase clenching in approximately 72% of users