Teeth grinding in children, also known as bruxism, is far more common than many parents realise. While adults often grind their teeth due to stress or jaw tension, kids may grind for completely different reasons related to growth, development, bite alignment, and airway issues. Bruxism can occur at night while a child sleeps, known as sleep bruxism, or during the day, particularly when a child is concentrating, anxious, or experiencing bite discomfort.
Although occasional teeth grinding can be normal, especially in younger children who are still losing baby teeth, ongoing bruxism should never be ignored. Understanding why children grind their teeth, what symptoms to look for, and when to seek professional help can protect your child’s developing smile and prevent long-term dental damage.
This guide explains the most common causes of teeth grinding in children, the symptoms that suggest something more serious, and how orthodontic treatment can support healthier jaw function and prevent complications.
Why Is My Child Grinding Their Teeth?
Teeth grinding in kids can develop for a variety of reasons. Identifying the underlying cause is key to finding the appropriate treatment. Below are the most common contributors to bruxism in children.
Bite Alignment and Structural Issues
Orthodontic problems are among the leading causes of teeth grinding in children. When the upper and lower teeth don’t meet correctly—known as a malocclusion—the jaw often moves or clenches to try to find a more balanced position. This can put pressure on the jaw joints and cause the teeth to rub together unnaturally, often leading to headaches or facial tension.
Common bite issues linked to childhood bruxism include crossbites, overbites, underbites, and narrow dental arches. When these issues are corrected, grinding often reduces or stops completely.
Normal Developmental Stages
Children commonly grind their teeth during transitional phases, such as:
- When new teeth are erupting
- When baby teeth are loose
- When adult teeth are first emerging
During these stages, bruxism may be temporary. However, ongoing grinding—even if initially triggered by teething—should be monitored closely to prevent enamel wear or bite changes.
Stress, Nightmares, and Anxiety
Emotional stress is a major trigger for teeth grinding in both children and adults. Many children grind their teeth when:
- Adjusting to a new school
- Experiencing routine changes
- Having frequent nightmares
- Feeling anxious during sleep
- Coping with family or academic stress
Stress-related bruxism often appears at night when the body is processing emotions, but some children also grind during the day when concentrating or feeling overwhelmed.
Sleep-Related Disorders
Children who snore, breathe through their mouth, or struggle to stay asleep may also be prone to teeth grinding. Sleep bruxism is often associated with:
- Airway restrictions
- Enlarged tonsils or adenoids
- Restless sleep
- Sleep apnoea-like symptoms
- Difficulty transitioning into deep sleep stages
If your child shows signs of sleep-disordered breathing, an orthodontic evaluation can help determine whether jaw or airway development is playing a role.
Symptoms Parents Should Watch For
Because teeth grinding often happens at night, many parents don’t realise their child is grinding until symptoms begin to appear. Keep an eye out for:
- Morning headaches
- Jaw pain or stiffness
- Tooth sensitivity
- Worn or chipped teeth
- Disrupted or restless sleep
- Complaints of facial or cheek soreness
- Grinding noises heard while your child sleeps
- Excessive pencil-chewing, nail biting, or thumb-sucking
Identifying symptoms early helps prevent long-term damage and allows your child to receive timely care. When left untreated, bruxism can lead to more serious concerns, like enamel erosion, tooth fractures, and temporomandibular joint disorder (TMD).
Treatment Options for Teeth Grinding in Children
The best treatment for bruxism during adolescence depends on the underlying cause. A specialist orthodontist can identify whether grinding is related to jaw development, structural issues, or behavioural triggers.
Correcting Bite Alignment Issues
If teeth grinding is caused by a bite problem or jaw imbalance, interceptive orthodontic treatment can help realign the teeth and allow the jaw to function properly. Early orthodontic treatment may include:
- Palatal expanders for narrow arches
- Growth-modifying appliances
- Partial braces
- Clear aligners for minor bite correction
Improving alignment reduces the pressure and discomfort that lead to grinding. Clear aligners are especially helpful for children who grind heavily at night, as they straighten the teeth while also acting as a protective barrier.
Custom Mouthguards or Night Guards
A custom-fitted mouthguard is one of the most effective ways to protect a child’s teeth from wear. Unlike store-bought guards, a professionally fitted night guard fits the child’s bite precisely, reduces wear-and-tear, and provides comfort during sleep.
For growing children, these guards are designed to be replaced or adjusted as their teeth and jaws develop.
Monitoring Growth and Development
In mild bruxism cases, an orthodontist may recommend simply monitoring your child’s growth and bite changes. Regular check-ups ensure problems are caught early and developing teeth are not being damaged.
This approach is ideal for children who grind during natural developmental phases and may grow out of the habit.
Behavioural and Stress Management
If stress or anxiety is a contributing factor, lifestyle adjustments can make a significant difference. Parents can help by:
- Establishing a calming bedtime routine
- Encouraging relaxing activities such as reading or gentle stretching
- Reducing screen time before bed
- Keeping consistent sleep and wake times
- Addressing school-related or emotional stressors
- Ensuring proper hydration to relax jaw muscles
In some cases, a paediatric therapist or counsellor may help adolescents manage stress-related triggers more effectively.
When It’s Time to See an Orthodontist
While teeth grinding can be common in children, it is not something to brush aside. Parents should schedule an orthodontic evaluation if:
- You hear your child grinding at night
- They complain of jaw pain or facial soreness
- Their teeth appear worn, chipped, or flattened
- Headaches are becoming more frequent
- Their bite looks misaligned
- They display symptoms of airway or sleep issues
An early orthodontic assessment can uncover the root cause of bruxism and prevent future complications. Early intervention is especially important because untreated grinding can affect jaw growth, facial development, and long-term oral health.
At Shakespeare Orthodontics, we specialise in diagnosing and treating teeth grinding in children. Our child-friendly orthodontists assess your child’s bite, jaw alignment, and airway development to ensure the right treatment plan is created for their needs.
Protect Your Child’s Smile Early
Teeth grinding in children may be common, but it should never be ignored. Whether caused by bite problems, stress, sleep disturbances, or developmental changes, bruxism can significantly impact your child’s comfort and long-term dental health. With early assessment and personalised care, most kids experience dramatic improvement.
If your child shows signs of teeth grinding, jaw pain, or worn teeth, book a free consultation at Shakespeare Orthodontics in Auckland. We’re here to help protect your child’s smile, support healthy jaw growth, and provide lasting relief from bruxism.
Shakespeare Orthodontics: Shaping a Smile You Will Love
Four Auckland Locations: Takapuna (North Shore), Epsom, Warkworth, Howick
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Our team of specialist orthodontists at Shakespeare Orthodontics includes:
- Dr Mo Al‑Dujaili, BDS, DClinDent, MRACDS‑Orth, MOrthRCSEd
- Dr Azza Al‑Ani, BDS, DClinDent, MRACDS‑Orth, MOrthRCSEd
- Dr Adriana Perez, BDS (Ven/Esp), MDS‑Orth (Arg)
Our specialist orthodontists provide expert care across our Auckland clinics, offering tailored treatment based on your individual needs.
