Non-Carious Lesions (NCL): What They Are, Causes, Prevention & How We Fix Them
Sensitive notches near the gumline? Smooth, cupped areas on biting surfaces? You may have non-carious lesions — tooth wear not caused by decay. Here’s how to identify them, stop the cause, and protect teeth with modern composite restorations.
EasyCare Family Dental • Suite 103/33 Lytton Road, East Brisbane QLD 4169 • After-hours: 0478 000 333
What Are Non-Carious Lesions?
NCLs are areas of tooth loss not due to decay (no bacteria-driven cavity). They commonly occur at the cervical (gumline) area or on biting surfaces.
- Abrasion: mechanical wear (hard brushing, abrasive toothpaste)
- Erosion: chemical wear from acids (dietary or reflux)
- Attrition: tooth-to-tooth wear (grinding/clenching)
- Abfraction: wedge-shaped cervical notches from flexure forces
Common Signs & Symptoms
- Sensitivity to cold/sweet at the gumline
- Wedge-shaped notches or smooth cupped areas
- Chipping at edges; yellow dentine showing
- Flat/shorter teeth, cracks from heavy bite
Why They Matter
- Ongoing wear can expose dentine & nerve
- Higher risk of cracks or tooth fracture
- Can trap plaque and worsen sensitivity
- Smile aesthetics affected at the gumline
What Causes NCLs?
- Brushing technique: hard scrubbing, stiff bristles, abrasive pastes
- Acid exposure: frequent soft/energy drinks, citrus, vinegar; reflux/GERD
- Parafunction: clenching/grinding (awake or during sleep)
- Malocclusion: heavy bite forces on specific teeth
- Habits: nail/pen biting, bobby pins, wind instruments
How We Diagnose
- Visual & tactile exam; photos to monitor change
- Sensitivity testing & bite analysis
- Diet & reflux history; medication review (dry mouth)
- Discuss brushing technique & tools you use
Prevention: Protect Enamel Daily
- Use a soft brush & gentle circular technique (no scrubbing)
- Choose low-abrasive fluoride toothpaste; add desensitising paste if needed
- Time acids with meals; rinse water after, wait 30 min before brushing
- Manage reflux with your GP; sip water, reduce late-night acids
- Consider a nightguard if you grind/clench
When Do We Restore?
We restore if lesions are progressing, deep, or causing persistent sensitivity/aesthetic concerns. Early enamel loss may be managed with prevention and fluoride or varnish alone.
Composite Restorations
- Bonded composite resin seals dentine, stops sensitivity
- Shaped to protect the weak cervical area
- Tooth-coloured for a natural look
- Minimal tooth prep; preserves enamel
Adjuncts We May Recommend
- Glass-ionomer base for high-moisture sites
- Nightguard to reduce flexure & attrition
- Bite adjustments or aligner therapy for heavy contacts
- Desensitising varnish and home pastes
Gentle, Predictable Care Close to Home
Free on-site parking • Wheelchair accessible • Minutes from Kangaroo Point, Norman Park & Woolloongabba.
Find Us – Map
Contact & Hours
EasyCare Family Dental
Suite 103/33 Lytton Road, East Brisbane QLD 4169
Phone: (07) 3523 3333 • After-hours: 0478 000 333
Hours: Mon–Fri 8:30am–5:30pm • Sat 9:00am–4:30pm • Sun Closed
Serving East Brisbane & Surrounds
Non-Carious Lesions – Q&A
Are NCLs the same as cavities?
No. Cavities are caused by bacteria and sugar acids. NCLs are mechanical/chemical wear without decay.
Do they go away on their own?
No — worn enamel doesn’t regrow. We can halt progression with prevention and restore with composite if needed.
Do I always need a filling?
Not always. Early lesions may settle with desensitising care and behaviour changes. We restore if deep, sensitive or progressing.
Will whitening make it worse?
Whitening can increase sensitivity temporarily. We treat exposed dentine first and may adjust whitening timing/gel strength.
How long do composite repairs last?
Many years with good home care and bite control (nightguard if needed). We review and polish at check-ups.
Is a nightguard really necessary?
If grinding is contributing, a custom guard significantly reduces flexure and attrition — protecting teeth and restorations.
