What is bruxism?
Bruxism is involuntary clenching or grinding of the teeth. It can appear during the day with stress and work that needs intense concentration, or at night during sleep. Morning jaw tiredness, pain at the temples, tooth wear or sensitivity are common signs; many people only learn about their grinding from those close to them.
Are a clear aligner and a night guard the same thing?
| Clear aligner (orthodontic) | Night guard (protective) | |
|---|---|---|
| Purpose | Moving the teeth to their planned position | Protecting the teeth from the effects of clenching and grinding |
| Use | 20–22 hours a day, changed in sequence | Usually during sleep, the same guard for a long time |
| Structure | Thin, designed for tooth movement | Thicker, resistant to wear |
Because clear aligners cover the tooth surfaces to some extent, they can reduce the direct effect of clenching on the teeth during treatment; however, they are not designed to replace a protective night guard. The orthodontist decides whether a separate night guard is needed during treatment.
What does wear on the aligners show?
Marked wear, holes or cracks on the biting surfaces of the aligners can be a sign of clenching or grinding at night. In that case it should be checked whether the aligner still fits the teeth fully and how the treatment plan is progressing. For aligners that do not fit, crack and similar situations, see the clear aligner problems and solutions page.
Jaw pain and joint problems: when should you mention them?
- If you have noticeable jaw tiredness in the morning or pain at the temples
- If you feel a sound or catching in front of the ear when opening or closing your mouth
- If your mouth opening has become limited
- If you have previously been treated for a jaw joint (TMJ) problem
It is important to mention these at your examination; complaints about the jaw joint also need to be assessed separately from orthodontic planning.
Daily habits that may reduce clenching
- Try to notice during the day whether your teeth are touching; at rest the lips should be closed and the teeth slightly apart.
- Limiting caffeine and alcohol in the evening may help some people.
- Cut down on habits such as chewing pens, nails or gum.
- Stress management and sleep routine are closely linked to bruxism.
After treatment
Removable retainers used after orthodontic treatment can also wear faster because of clenching and grinding. Replacing worn or cracked retainers is important to keep the teeth in their new position. Details: retention.