Bruxism in Pediatric Patients

Definition and Classification

• Sleep bruxism (SB) - occurs during sleep, predominantly in NREM stages N1 and N2 and REM sleep
• Awake bruxism (AB) - diurnal clenching or grinding, often stress-related

Epidemiology

• Affects approximately 56% of normally developing infants - this frequency places it among the most prevalent repetitive behaviors of childhood
• Onset is often between ages 10 and 20, though it can begin earlier and persist throughout life
• Bruxism tends to resolve in many children as the primary dentition is shed; long-term damage to deciduous teeth is rarely significant because they will be replaced by permanent dentition
• In adolescents and adults, however, bruxism can cause major dental pathology: periodontal disease, enamel loss, and temporomandibular (TMJ) joint dysfunction
• In children with cerebral palsy: a 2025 systematic review and meta-analysis (PMID 38243943) found a pooled prevalence of 46% (95% CI: 0.38-0.55) - nearly half of this population is affected
• Higher rates are also seen in children with ADHD, intellectual disability, and autism spectrum disorder
• Kaplan & Sadock's Comprehensive Textbook of Psychiatry, p. 11542-11543
• Bradley and Daroff's Neurology in Clinical Practice, p. 2409

Etiology and Risk Factors

Clinical Presentation

• Tooth grinding sounds at night (often reported by parents/bed partners)
• Morning jaw pain or soreness
• Headaches, especially temporal
• Crepitus on mandibular movement (a sentinel sign of TMJ dysfunction)
• Wear facets on tooth surfaces; flattening of cusps
• In severe or long-standing cases: exposed dentin, enamel loss, periodontal involvement, TMJ dysfunction

Association with Specific Conditions

ADHD and Stimulant Use

Cerebral Palsy

OSA

Diagnosis

• History from parents or caregivers: audible tooth grinding, jaw symptoms
• Dental exam: wear facets, cusp flattening, enamel erosion, exposed dentin, crepitus
• Polysomnography (PSG): gold standard for confirming sleep bruxism, documenting frequency and duration of bruxing episodes; can also evaluate for co-occurring OSA
• In children with neurodevelopmental conditions, screening for bruxism should be routine

Management

Non-Pharmacological (First-Line)

1. Occlusal splints / night guards - considered the gold standard for protecting dentition; prevents further enamel loss and reduces TMJ inflammation. A 2026 systematic review (PMID 42029017) found that occlusal splints have limited effectiveness in managing signs and symptoms but remain the standard protective intervention.
2. Daytime awareness training - instructing patients to consciously separate upper and lower teeth when they notice clenching; avoiding gum chewing to prevent neuromuscular programming of the bruxing pattern
3. Stress reduction / behavioral therapy - particularly relevant in stress-precipitated cases; addressing psychosocial stressors
4. Treat underlying causes - adenotonsillectomy if OSA is the driver (removes tonsils/adenoids, the most common cause in children); optimizing ADHD management
5. Photobiomodulation therapy (PBMT/laser therapy) - shows some potential as a painless, cost-effective alternative, but evidence remains inconclusive per the 2026 systematic review

Pharmacological

• Kaplan & Sadock's Comprehensive Textbook of Psychiatry, p. 10117 (hydroxyzine)
• Bradley and Daroff's Neurology in Clinical Practice, p. 2409 (botulinum toxin)

Prognosis

• Bruxism in young children is often self-limiting - many cases resolve as children mature
• Damage to deciduous teeth is usually not clinically significant since permanent teeth will erupt
• Persistent bruxism into adolescence or with permanent dentition requires active management to prevent irreversible dental damage and TMJ pathology
• Children with comorbid neurological conditions (cerebral palsy, ASD, intellectual disability) tend to have more persistent and severe bruxism

Key Takeaways

• Bruxism is common in childhood (~56% of infants have it at some point) and is part of a spectrum from normal to pathological
• Red flags warranting workup include: persistence beyond early childhood, association with OSA symptoms (snoring, daytime hyperactivity), neurological conditions, and dental damage
• Management is multimodal: protect the teeth (occlusal splint), address the trigger (stress, OSA, medication effect), and consider pharmacotherapy for refractory cases
• Hydroxyzine has the strongest evidence for pharmacotherapy specifically in pediatric bruxism

• PMID 42029017 (2026, Systematic Review) - occlusal splints have limited symptom control; PBMT promising but inconclusive
• PMID 38243943 (2025, Meta-analysis) - 46% prevalence in children with cerebral palsy
• PMID 42098766 (2026, Systematic Review) - significant association between TMD, sleep disturbance, and psychological distress in children and adolescents

Sleep Bruxism vs. Awake Bruxism

1. Timing and Awareness

2. Muscle Activity Pattern

• Sleep bruxism - dominated by rhythmic (phasic) jaw muscle contractions - repeated bursts of masseter/temporalis activity. These occur in clusters, most prominently in NREM stages N1/N2 and REM sleep. The jaw moves in a grinding, lateral pattern.
• Awake bruxism - dominated by sustained (tonic) muscle contraction - jaw clenching without grinding movement. Patients press upper and lower teeth together for prolonged periods. There is far less rhythmic grinding.

3. Neurological Mechanism

• Sleep bruxism is classified as a sleep-related movement disorder. It is driven by activity in sleep-related motor circuits during arousals. Dopamine and serotonin dysregulation during sleep transitions appear to play a central role. Episodes cluster around micro-arousals.
• Awake bruxism is thought to be primarily a stress-response behavior - a parafunctional habit triggered by psychological tension, concentration, or emotional arousal during wakefulness. It is more closely related to anxiety and psychological state than to sleep physiology.

4. Triggers and Associations

5. Prevalence Comparison in Children

• Sleep bruxism in children: well-documented, ~14-38% in various studies
• Awake bruxism in children: less studied. A 2023 systematic review (PMID 37739056) found possible AB prevalence of 16-32% in the general population, but noted: "In pediatric patients, although this condition seems to be equally present, not enough studies were found to support this information for probable and definitive bruxism."
• A 2025 meta-analysis in children and adolescents (PMID 40706401) found that poor sleep quality (caregiver-reported) significantly increased odds of sleep bruxism (OR 1.92, 95% CI 1.48-2.48), but data on awake bruxism in this age group remain very limited

6. Management Differences

Bottom Line

🎬 Reel Script - Pediatric Bruxism (Malayalam)

"രാത്രി കുട്ടി ഉറങ്ങുമ്പോൾ പല്ല് കടിക്കുന്ന ശബ്ദം കേൾക്കാറുണ്ടോ?"

"ഇതിനെ Bruxism എന്ന് പറയും - അതായത് ഉറക്കത്തിൽ പല്ല് അരക്കുന്ന ശീലം."

"ഇത് കുട്ടികളിൽ വളരെ common ആണ്. ഏകദേശം പകുതിയോളം കുട്ടികളിൽ ഇത് കാണാറുണ്ട്."

"കൂടുതലും ഉറക്കത്തിൽ ഉണ്ടാകും - stress, anxiety, അല്ലെങ്കിൽ ഉറക്കക്കുറവ് ഇതിന് കാരണമാകാം."

"ADHD ഉള്ള കുട്ടികളിലും, cerebral palsy ഉള്ളവരിലും ഇത് കൂടുതലായി കാണുന്നു."

"ചെറിയ പ്രായത്തിൽ baby teeth ഉള്ളപ്പോൾ വലിയ പ്രശ്നമില്ല - അത് natural ആയി മാറും. പക്ഷേ permanent teeth വന്നിട്ടും ഇത് തുടർന്നാൽ dentist നെ കാണണം."

"Morning-ൽ jaw വേദന, തലവേദന - ഇവ symptoms ആണ്."

"ഈ ശബ്ദം കേൾക്കുമ്പോൾ panic ആകേണ്ട - observe ചെയ്യൂ, കുട്ടിക്ക് stress കൂടുതലുണ്ടോ എന്ന് നോക്കൂ. Persist ചെയ്താൽ doctor നോട് പറയൂ."

"ഒരു രാത്രിയുടെ ഉറക്കം അവർക്ക് safe ആക്കാൻ നമ്മൾക്ക് കഴിയും."

📋 Notes for Filming

• No text overlays needed - the script is self-explanatory
• Pacing: speak slowly, one sentence = one breath; don't rush
• Hook delivery: say it like a genuine question to the viewer, not a dramatic opener
• Background: neutral, clean - clinic or home shelf works; avoids the "viral reel" look intentionally
• Caption idea: "മക്കൾ ഉറക്കത്തിൽ പല്ല് കടിക്കുന്നോ? | Bruxism in children"

English Translation (for reference)

"Do you hear a grinding sound when your child sleeps at night? This is called Bruxism - the habit of grinding teeth during sleep. It is very common in children - almost half of all children show this at some point. It mostly happens during sleep, and stress, anxiety, or poor sleep can be reasons. It is seen more in children with ADHD and cerebral palsy. When they are young with baby teeth, it usually resolves on its own. But if it continues after permanent teeth come in, see a dentist. Morning jaw pain and headaches are symptoms to watch for. When you hear that sound, don't panic - observe, check if your child has more stress than usual. If it persists, tell your doctor. We can make their nights a little safer."

Bruxism in the Primary Dentition - Is It Normal?

Short answer: Yes, mostly.

Why It Happens in This Age Group

Does It Cause Damage to Baby Teeth?

"Even if chronic bruxism wears down enamel, this rarely results in long-term problems in young children because deciduous teeth will be replaced by the permanent dentition."

• Kaplan & Sadock's Comprehensive Textbook of Psychiatry

• Mild to moderate wear on primary teeth = clinically acceptable - those teeth will fall out anyway
• Severe wear exposing dentin (the yellow layer under enamel) = worth monitoring, but still rarely requires treatment in the primary dentition
• Pain, sensitivity, or abscess from worn-down teeth = then it needs dental attention

When Does It Typically Resolve?

• Most children show a spontaneous reduction in bruxism as the primary dentition becomes complete
• Many resolve further around age 6-7 when the first permanent molars erupt and establish a new stable occlusion
• Persistence into the permanent dentition (after age ~7-8) is when it transitions from "normal" to something that needs monitoring and management

Red Flags That Make It NOT Normal

Bottom Line for Parents