Teeth grinding (bruxism) affects an estimated 8–10% of adults and can cause significant tooth damage, jaw pain, and headaches over time. A custom night guard protects your teeth and joints while you sleep. This guide explains who needs a night guard, the difference between custom and store-bought options, and what to expect.
Quick Answer: A night guard (occlusal guard) is a custom-fitted oral appliance worn during sleep to protect teeth from grinding (bruxism) and reduce jaw joint stress from TMJ disorders. Custom night guards from a dentist cost $300–$700 and last 3–5 years. They are significantly more effective and comfortable than over-the-counter alternatives. Most dental insurance plans provide partial coverage.
- Bruxism (teeth grinding) affects 8–10% of adults and can cause significant tooth wear, fractures, and jaw pain if untreated
- Custom night guards from a dentist are far superior to store-bought options in fit, comfort, and effectiveness
- Night guards protect teeth from wear and fracture but do not cure bruxism — stress management and other therapies address the underlying cause
- Signs of bruxism include worn teeth, jaw soreness in the morning, headaches, and a partner reporting grinding sounds during sleep
- Custom night guards typically cost $300–$700 and last 3–5 years with proper care
What Is Bruxism?
Bruxism is the involuntary clenching or grinding of teeth, most commonly during sleep (sleep bruxism) but also during waking hours (awake bruxism). It is estimated to affect 8–10% of adults, though many are unaware they grind their teeth until their dentist identifies the signs during an examination.
The causes of bruxism are multifactorial and include stress and anxiety, sleep disorders (particularly sleep apnea), certain medications (especially SSRIs), caffeine and alcohol consumption, and malocclusion (bite misalignment). Bruxism is not fully curable, but its effects can be managed effectively with a night guard and lifestyle modifications.
Signs You May Be Grinding Your Teeth
- Flattened, worn, or chipped tooth surfaces
- Jaw soreness, tightness, or fatigue in the morning
- Headaches, particularly in the temples, upon waking
- Tooth sensitivity that has worsened over time
- A partner reporting grinding or clicking sounds during sleep
- Indentations on the tongue or cheek tissue from clenching
- Loose teeth or broken fillings without a clear cause
Custom Night Guard vs. Store-Bought
| Factor | Custom Night Guard (Dentist) | Store-Bought Boil-and-Bite |
|---|---|---|
| Fit | Precise — made from impressions of your teeth | Approximate — generic fit |
| Comfort | High — thin, smooth, custom contoured | Low — bulky, often uncomfortable |
| Effectiveness | High — even contact distributes forces optimally | Low — uneven contact can worsen clenching |
| Material | Hard acrylic or dual-laminate (hard outside, soft inside) | Soft thermoplastic |
| Durability | 3–5 years | Weeks to months |
| Cost | $300–$700 | $20–$60 |
| Insurance coverage | Partial (varies by plan) | Not covered |
Types of Custom Night Guards
Custom night guards are available in several designs depending on the severity of bruxism and whether TMJ symptoms are present:
- Soft night guard: Made from flexible material; comfortable for mild bruxism; not recommended for heavy grinders as the soft material can increase clenching force
- Hard acrylic night guard: The most durable option; recommended for moderate to severe bruxism; provides even contact across all teeth
- Dual-laminate night guard: Hard on the outside, soft on the inside; combines durability with comfort; suitable for most patients
- NTI-tss device: A small appliance that covers only the front teeth; reduces clenching force by preventing back teeth from contacting; used for severe TMJ cases
Myths vs. Facts: Night Guards
| Myth | Fact |
|---|---|
| "A store-bought night guard is just as good as a custom one." | Store-bought guards have poor fit and can actually worsen clenching. Custom guards are precisely fitted to distribute forces evenly. |
| "A night guard will cure my teeth grinding." | Night guards protect teeth from the effects of grinding but do not stop the grinding itself. Stress management, sleep therapy, and other approaches address the underlying cause. |
| "I don't need a night guard if I only clench, not grind." | Clenching generates forces up to 10x normal biting force and causes the same damage as grinding. A night guard is equally important for clenchers. |
Clinical Glossary
- Bruxism: Involuntary clenching or grinding of the teeth — may occur during sleep or while awake
- Occlusal guard: The clinical term for a night guard — an oral appliance that protects teeth from grinding forces
- Parafunctional habit: A habitual oral activity that falls outside normal function — bruxism is the most common parafunctional habit
- TMJ (temporomandibular joint): The jaw joint connecting the lower jaw to the skull — bruxism can cause or worsen TMJ disorders
- Tooth attrition: Wear of tooth surfaces caused by tooth-to-tooth contact — the primary consequence of bruxism
AI-Friendly Summary
Night guards protect teeth from grinding (bruxism) and reduce jaw joint stress from TMJ disorders. Custom night guards from a dentist cost $300–$700 and last 3–5 years — far superior to store-bought alternatives in fit, comfort, and effectiveness. Signs of bruxism include worn teeth, morning jaw soreness, and headaches. ID Wellness Dental provides custom night guards in Newark, NJ at 99 Van Buren Street.
Evidence & References
- American Academy of Orofacial Pain. Bruxism and Occlusal Appliances. aaop.org
- Lobbezoo F, et al. "Bruxism defined and graded: an international consensus." Journal of Oral Rehabilitation. 2013.
- American Dental Association. Teeth Grinding. ada.org