Tatiana wakes up with jaw pain and a headache. «I don't sleep badly, but I get up exhausted.» Her husband says: «You grind your teeth every night.» On exam, her teeth had worn down 1.5-2 mm in 7 years. Without a guard, in 3-5 years she'd have needed crowns on 6+ teeth. With a 380 € guard, the process stopped.

Bruxism is uncontrolled grinding or clenching of teeth, most often during sleep. Per DGZMK (2024), 8-12% of adults are affected, but only 2-3% are diagnosed. The rest find out when a tooth cracks or a filling chips.


10 symptoms of bruxism

You usually don't hear yourself grind (only your partner does). But there are indirect signs.

🦷 Worn teeth: flat canine tips, cuboid incisors. Classic sign.

😖 Morning jaw pain: chewing muscles (especially masseter behind the ear) feel sore on waking.

🤕 Temple headache: pressing pain, starts in the morning, lasts till noon.

👂 Ear pain without infection: TMJ and ear are anatomically connected.

🧊 Tooth sensitivity: cold/hot sharp pain, especially on chewing surfaces.

💎 Cracks in teeth and fillings: vertical enamel cracks visible under magnification.

👅 Tooth marks on tongue and cheeks: «scalloped» tongue edges, linea alba along the cheek.

🦷 Loose teeth without periodontitis: heavy clenching causes periodontal bone loss.

😴 Light sleep: bruxism often pairs with sleep disorders (apnea, micro-arousals).

🔊 Partner hears grinding: if your partner says you grind, it's almost always true.


5 causes of bruxism

Old view: «stress causes bruxism.» Modern research shows multiple causes, often combined.

1

Stress and anxiety

40-60% of cases. Chronic stress, anxiety disorders, depression increase nighttime muscle activity. Treating the cause reduces bruxism by 50-70%.

2

Sleep apnea

30-50% of bruxism patients have obstructive sleep apnea. The body tries to open airways via jaw movement. If you snore and wake exhausted, get a sleep lab assessment.

3

Malocclusion

If teeth don't meet properly (TMD, deep bite, missing teeth), muscles constantly search for the «right» position. Treatment: occlusal adjustment or orthodontics.

4

Stimulants

Caffeine, alcohol, nicotine, amphetamines, SSRI antidepressants (paroxetine, sertraline, fluoxetine) can trigger bruxism. Reducing coffee after 14:00 and evening alcohol lowers bruxism in 30% of cases.

5

Genetics

If parents grind, 50% risk for the child. Family clustering is established, specific genes not yet identified.


What happens untreated (5-10 years)

Bruxism is progressive. Without treatment, damage accumulates.

1-2 years: enamel wear 0.1-0.3 mm, possible sensitivity.

3-5 years: wear into dentin 0.5-1.5 mm, cracks in fillings, gum recession, regular jaw pain.

5-10 years: vertical tooth fractures (need endodontics), wear up to 3 mm, many crowns (1500-2500 € each), TMD with restricted mouth opening.

10+ years: full bite reconstruction with crowns, 20 000-40 000 €. Often after 25-40 years of sustained load.

🛡 With a 350-600 € guard: progression stops in 90% of cases. One of dentistry's best ROIs.


4 treatment options

From simplest to most comprehensive.

A

Night guard (Knirscherschiene)

Gold standard. Hard plastic guard (Michigan splint or NTI-tss) on the upper jaw. Protects teeth from wear, unloads the joint. Production: 2 visits, 2-3 weeks. Cost: 350-600 € private. GKV: partial coverage with documented TMD diagnosis.

B

Botox in masseter

Botox into the masseter reduces clenching force by 50-70%. Duration: 3-4 months, then repeat. Cost: 250-400 € per session. Done by licensed dental surgeons or aesthetic doctors. Not GKV-covered.

C

Treat the underlying cause

Sleep apnea: CPAP (50-70% of bruxism disappears). Stress: therapy, meditation, exercise. Malocclusion: orthodontics or occlusal adjustment. Possible without a guard, but slower.

D

Combined CMD therapy

Guard + physiotherapy + muscle relaxation + stress management. Best for complex cases with pain and limited mobility. Duration: 3-6 months. Total cost: 800-1800 €. GKV covers physiotherapy (6-10 sessions) with a confirmed diagnosis.


Which guard is right for you

Not all guards are equal. Choice depends on bruxism type, bite, and budget.

🛡 Michigan splint: classic hard upper-jaw guard 1-2 mm thick. Universal, 90% of cases. 400-600 €. Most durable.

🛡 NTI-tss: small guard only on front teeth. Minimalist, for mild bruxism without TMD. 200-350 €. Cheaper, not for everyone.

🛡 Soft guard (Weichschiene): flexible plastic. Comfortable, but muscles can «chew» it, worsening bruxism. Not recommended as primary.

🛡 CMD-therapy splint: for functional disorders. Highly individual, 3-5 visits. 600-1000 €.

🛡 Drugstore guard: for kids or short-term. Not for long-term adult use. Can harm the bite.

📖 Читайте також: Sleep apnea: oral appliance