2. Bruxism
Bruxism is the habit of clenching and grinding the teeth. It most often occurs at night during sleep, but may also occur during the day. It is an unconscious behavior or habit perhaps performed to release anxiety , aggression, or anger.
Healthline.com (OMS Preferred Provider)

3. Bruxism: MedlinePlus Medical Encyclopedia
Bruxism is when you clench (tightly hold your top and bottom teeth together) or grind (slide your teeth back and forth over each other) your teeth.
MedlinePlus (Offsite)

4. Bruxism
Bruxism is the term that refers to an incessant grinding and clenching of the teeth, unintentionally, and at inappropriate times. Bruxers (persons with bruxism) are often unaware that they have developed this habit, and often do not know that trea...
www.stjosephsatlanta.org

5. Bruxism
Bruxism is the chronic, involuntary grinding or clenching of teeth. It usually occurs during sleep, but may also occur while awake.
www.mbhs.org

6. Bruxism Quiz
Are you clenching your teeth and don't even know it? Find out about bruxism (teeth clenching or grinding) by taking this quiz.
www.fairview.org

7. OhioHealth - Bruxism/teeth grinding
Bruxism is a condition in which you grind, gnash or clench your teeth. If you have bruxism, you may unconsciously clench your teeth together during the day or grind them at night, which is called sleep bruxism.
ohiohealth.com

8. Bruxism (Teeth Grinding or Clenching)
When you look in on your sleeping child, you want to hear the sounds of sweet dreams: easy breathing and perhaps an occasional sigh. But some parents hear the harsher sounds of gnashing and grinding teeth, called bruxism, which is common in kids.
kidshealth.org

9. Bruxism - Symptoms, Treatment and Prevention
Although the grating noise may be annoying for a spouse or sibling, teeth grinding is not something to become worried about.
www.healthscout.com

10. PACT: Oral Habits - Bruxism
The habit of unconsciously gritting or grinding the teeth especially in situations of stress or during sleep.
www.aap.org