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Wellbeing2 min read · July 19, 2026

Bruxism and night guards: why you grind your teeth

Grinding or clenching wears enamel and strains the jaw joint. How to recognise bruxism and how a custom night guard works. A guide by Dr. Massimo Ferrara.

Waking up with an aching jaw? Does your partner hear you grinding your teeth at night? It could be bruxism: involuntary activity of the chewing muscles that clenches or rubs the teeth, especially during sleep.

Why it happens

Bruxism is multifactorial: stress and emotional load play an important role, together with sleep-related factors. It is not a disease of the teeth as such — but it discharges considerable, repeated forces onto them.

Signs not to ignore

  • Teeth that look flattened, chipped or sensitive without other causes
  • Pain or stiffness in the jaw muscles on waking
  • Temporal headaches
  • Clicking or discomfort at the temporomandibular joint (TMJ)
  • Marks on the tongue or inside the cheeks

What we can do

  1. Diagnosis: clinical examination of occlusion, muscles and TMJ. Dr. Massimo Ferrara trained specifically in gnathology (Roth-Williams school on functional occlusion disorders).
  2. Custom night guard: a rigid splint built on the digital impression of your arches (intraoral scanner, no pastes) that protects enamel and rebalances loads.
  3. Monitoring: periodic checks on wear and comfort, with adjustments where needed.
  4. Stress management: where appropriate, we suggest pairing sleep-hygiene and stress-management strategies — the guard protects the teeth, it does not remove the cause.

Bruxism in children

Little ones can grind too: it is often transient and growth-related, but should be monitored at periodic visits, especially if wear or pain appears.

If you recognise these signs, don't let your enamel pay the bill: a gnathological examination clarifies the picture and, if needed, the guard is ready in a few days.

Sources

  • WHO, Global Oral Health Status Report, 2022 — oral health as part of overall wellbeing.
  • WHO, Oral health fact sheet — protecting enamel and periodontal tissues as the basis of prevention.
  • Gnathology training: Center for Functional Occlusion, Roth-Williams school (completed by Dr. Massimo Ferrara, as per bio).

Frequently asked questions

How do I know if I grind my teeth at night?

Often a partner notices, or the signs reveal it: flattened or chipped teeth, sensitivity, sore jaw muscles on waking, temporal headaches. An examination confirms the diagnosis.

Can I buy a night guard at the pharmacy?

One-size-fits-all guards can be inadequate or even worsen your bite. An effective guard is custom-made after studying your occlusion, today with a digital impression from an intraoral scanner.

Does bruxism go away on its own?

It can fluctuate over time, often with stressful periods. But damage to enamel and the joint accumulates: protecting the teeth with a guard and monitoring is the prudent strategy.

Clinical review: Dr. Massimo Ferrara