Many shift workers wake up with a tired jaw and sore teeth without knowing they pressed them together all night. The habit is called bruxism, and it turns up often in rotating shift work.
The body does not switch off at the end of a shift. Stress from a busy night or a schedule that keeps moving stays in the muscles after you clock out. The jaw is one of the first places to hold it; the chewing muscles are strong and stay locked for hours.
Sleeping at the wrong hours adds to it. Going to bed at seven in the morning after a night shift leaves the body switched on, so sleep comes lighter and the jaw stays tense longer. Add a coffee to survive the shift and another to get through the morning, and the muscles never quite let go.
Most people never hear themselves grind. They find out from signs that show up later:
Two or three of these together are a strong hint that clenching is happening without you noticing it.
A relaxed jaw is not a closed jaw. The teeth sit a few millimetres apart, lips together, tongue on the roof of the mouth behind the front teeth. Try it now: part your teeth, place the tongue tip behind the upper front teeth, close your lips without biting.
Every time you catch yourself clamping down during the day, go back to that position.
A compress on each side of the jaw for ten minutes before bed, comfortably warm but not hot, softens the muscles. Then breathe in through the nose for four counts and out for six, ten rounds.
Keep caffeine at least six hours from sleep. If your shift ends at six in the morning, your last coffee belongs before midnight, not on the drive home.
Your pillow matters more than it seems. One that is too high or too soft tips the neck and pushes the jaw into a strained position. Pick one that supports the curve of the neck and keeps the head in line with the spine.
Plenty of clenching happens while you are awake. A hard screen or a difficult call, and the teeth are together again. Once an hour, let your teeth part and move the jaw gently side to side.
A light massage with your fingertips on the muscle below the cheekbone, in small circles, releases some tension. Writing shifts and hours down shows where the pressure sits in the month. Shiftat-E logs shifts, hours, overtime and planned leave, nothing more.
See a dentist if the ache lasts more than two weeks, if your teeth look worn, or if jaw pain spreads toward the ear. A dentist can check the teeth and jaw joint and may suggest a night guard. A guard protects the teeth from wear but does not fix the cause, and only a dentist can decide whether you need one.
Everything above is general information, not a diagnosis. A professional assessment is what settles your own case.
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