Worn & Eroded Teeth Treatment in Marsden Park

Worn teeth are a slow, silent problem. Most patients do not notice the wear until the teeth are visibly shorter, the edges are translucent, or the bite has changed. At our Dentist Marsden Park practice, MM Dental diagnoses and treats worn teeth as part of our crowns and bridges and cosmetic dentistry services for patients across Marsden Park, St Marys, Schofields and the wider northwest Sydney corridor. This page covers the three mechanisms of tooth wear, why early intervention matters, the treatment options, and how to prevent further damage.

The honest opening: worn teeth are usually a combination of three things happening at once, not one. Treating the wear without addressing the cause is like patching a leaking roof without fixing the gutters. The result will fail.

What is the difference between attrition, abrasion, and erosion?

Attrition is tooth-on-tooth wear, usually from grinding or clenching. Abrasion is wear from external objects, usually brushing too hard. Erosion is chemical wear from acid, either dietary or medical. The Australian Dental Association and Better Health Channel’s tooth erosion page describe the three mechanisms clearly. Most cases of tooth wear are a combination of at least two of these, sometimes all three.

The three mechanisms, with what each looks like at the chair:

• Attrition — wear on the biting surfaces of the teeth, often matching between the upper and lower teeth. The patient may have a history of grinding, clenching, or a heavy bite. The wear is usually even across the arch. Often accompanied by jaw muscle tenderness and TMJ symptoms.
• Abrasion — wear at the gumline, often on the cheek side of the teeth. Caused by brushing too hard, using a hard-bristled toothbrush, or abrasive toothpaste. The wear appears as a V-shaped notch at the junction of the crown and the root. The patient is often a vigorous brusher with otherwise good oral hygiene.
• Erosion — wear on the palatal (inner) surfaces of the upper front teeth, or generalised thinning of the enamel. Caused by acid, either dietary (soft drinks, citrus, sports drinks, wine) or medical (reflux, bulimia, morning sickness, frequent vomiting). The teeth look glassy and translucent at the edges. The cause is often the hardest part of the case to identify.

The honest framing: most patients with significant wear have more than one mechanism. A reflux patient (erosion) who grinds at night (attrition) and brushes hard (abrasion) is a classic combination. Each mechanism needs to be addressed separately for the treatment to last.

What causes worn teeth?

The causes of tooth wear are bruxism (grinding and clenching), aggressive toothbrushing, dietary acid (soft drinks, citrus, sports drinks, wine), and medical acid (reflux, eating disorders, frequent vomiting). The Better Health Channel’s tooth erosion page is the standard patient reference for the causes. Identifying the cause is the most important part of the case, because the treatment fails if the cause continues.

The main causes, ranked by how often we see them:

• Bruxism (grinding and clenching) — affects roughly 1 in 5 adults to some degree. Often unconscious, happening during sleep. Worn biting surfaces, jaw muscle tenderness, headaches on waking, sometimes cracked teeth or fillings. A night guard is the standard protective intervention.
• Aggressive toothbrushing — particularly with a hard or medium toothbrush. Worn notches at the gumline, often on the cheek side of the canines and premolars. Patients are often surprised to learn they are brushing too hard, because they think vigorous brushing is good brushing.
• Dietary acid — soft drinks (including diet versions), sports drinks, energy drinks, citrus juices, wine. Frequent sipping throughout the day is more harmful than a single serving. The acid softens the enamel, and the next brush erodes it.
• Reflux (GORD) — stomach acid rising into the oesophagus and sometimes the mouth, often at night. The patient may not know they have reflux; the dental wear is the first clue. A GP workup is part of the case.
• Eating disorders (bulimia) — self-induced vomiting exposes the teeth to stomach acid repeatedly. Often combined with other wear mechanisms. Sensitive case that requires a multidisciplinary approach.
• Frequent vomiting from other causes — morning sickness in pregnancy, chemotherapy, cyclical vomiting syndrome. Each has its own management approach.

The honest framing: identifying the cause is non-negotiable. A patient who gets a beautiful set of veneers to fix eroded teeth, but continues to drink soft drinks throughout the day, will erode the veneers within a few years. The cause has to be addressed first, then the wear can be restored.

When does worn tooth need treatment?

Worn teeth need treatment when the wear has progressed past the point of monitoring, when the teeth are sensitive, when the bite has changed, or when the cosmetic appearance is affecting the patient. The threshold for treatment is usually when 30-40% of the tooth structure has been lost, but symptoms and patient concern also drive the decision. The ADA’s position on tooth wear emphasises early intervention as the most cost-effective approach.

The stages and the typical decision at each:

• Mild wear (10-20% of structure lost) — monitor. Photograph the teeth, take impressions for study models, review in 6-12 months. The cause is identified and addressed (night guard, diet change, softer brush, reflux treatment). No restorative treatment yet.
• Moderate wear (20-40% of structure lost) — early intervention. Composite bonding to restore the lost structure, particularly on the front teeth and the biting surfaces of the back teeth. The bonding protects the remaining tooth and buys time before more extensive work is needed.
• Severe wear (40%+ of structure lost) — full restoration. Composite bonding for moderate cases, crowns or onlays for severe cases. Often the bite has to be rebuilt (called “occlusal rehabilitation”), which is a multi-visit process.
• Wear with symptoms (sensitivity, pain, difficulty chewing) — treat now, regardless of the percentage of structure lost. The patient is symptomatic, and the wear is affecting function.

The honest framing: the earlier the intervention, the cheaper the treatment. A 35-year-old with mild erosion and good home care can be monitored for decades with a night guard and dietary changes. The same patient at 55 with severe wear and lost bite height is looking at full-mouth rehabilitation costing tens of thousands of dollars. The early years are where the savings are.

How is tooth wear treated?

Tooth wear is treated by addressing the cause first, then restoring the lost structure with composite bonding, onlays, or crowns depending on the severity. A night guard is almost always part of the case to protect the result from further wear. The ADA’s tooth wear treatment guidance and Better Health Channel’s teeth-grinding page are the standard references.

The treatment by mechanism and severity:

• Bruxism-driven wear — night guard as the foundation, then composite or crown restoration of the worn surfaces. The night guard is non-negotiable; without it, the restoration will fail.
• Abrasion (brushing wear) — change to a soft toothbrush, gentle technique, less abrasive toothpaste. Restore the notches with composite bonding if they are sensitive or unsightly.
• Erosion (acid-driven wear) — identify and address the acid source. Dietary changes, GP workup for reflux, treatment for eating disorders. Restore the lost structure with composite or ceramic once the acid is controlled.
• Combination wear — multi-pronged approach. Night guard, dietary changes, softer brush, GP workup if needed. Restoration of the worst areas, monitoring of the rest.

The restoration options, by extent:

• Composite bonding (direct) — added directly to the tooth, shaped, hardened, polished. Single visit. Reversible. Best for moderate wear, particularly on the front teeth. Lasts 5-8 years before needing refresh.
• Porcelain onlays — lab-fabricated ceramic pieces bonded to the biting surfaces of the back teeth. Two visits. Best for moderate-to-severe wear on the back teeth. Lasts 10-15 years.
• Crowns — full coverage of the tooth. Best for severe wear where the tooth is structurally compromised. Lasts 10-15 years.
• Full-mouth rehabilitation — for severe, generalised wear with lost bite height. Rebuilds the entire bite over multiple visits. The most expensive option, but sometimes the only one that works.

The honest framing: the cause has to be addressed first or the restoration will fail. A night guard without restoration is often the right first step for a young patient with active wear. Restoration without addressing the cause is a temporary fix.

How can further wear be prevented?

Further wear is prevented by addressing the cause (night guard for grinding, dietary change for erosion, softer brush for abrasion) and by maintaining the restored teeth with regular check-ups and diligent home care. The Better Health Channel’s teeth-grinding page is the standard patient reference for prevention.

The prevention list, by mechanism:

• Bruxism — night guard. The single most useful intervention. Worn at night indefinitely. Replaced every 3-5 years as it wears through.
• Aggressive brushing — soft-bristled brush, gentle pressure, non-abrasive toothpaste. The “scrub harder, get cleaner” myth is the main cause. A soft brush with gentle pressure cleans just as well and does not wear the teeth.
• Dietary acid — limit soft drinks, sports drinks, citrus, and wine. Drink through a straw to bypass the front teeth. Rinse with water after acid exposure. Wait at least 30 minutes before brushing after an acid exposure.
• Reflux — GP workup and treatment. Elevate the head of the bed. Avoid eating within 3 hours of lying down. Treat the reflux, and the dental wear stops progressing.
• Eating disorders — multidisciplinary care. Dentist + GP + psychologist. The dental treatment is supportive; the eating disorder needs to be addressed by a specialist.

The honest framing: prevention is cheaper than restoration. A night guard costs $300-$500 and lasts 3-5 years. A full-mouth rehabilitation costs $20,000-$40,000+. The arithmetic is simple.

Frequently asked questions (supplementary)

Is tooth wear normal as I age? Some wear is normal, yes. The enamel thins slightly with age, and decades of chewing produce some wear on the biting surfaces. The question is whether the wear is within normal limits or has progressed to a point where treatment is needed. A dentist can tell the difference.

Can worn teeth be built back up? Yes. Composite bonding, onlays, and crowns can all restore the lost structure. The result depends on the severity of the wear and the health of the remaining tooth.

Will my teeth get shorter over time? Only if the cause of the wear is not addressed. Once the cause is identified and managed (night guard, dietary change, etc.), the wear stops progressing. The remaining teeth are then restored to their original shape.

Is a mouthguard the same as a night guard? No. A sports mouthguard is thicker and designed to absorb impact. A night guard (occlusal splint) is thinner and designed to distribute bite forces evenly. They serve different purposes. Some patients need both.

Can I whiten worn teeth? Whitening works on the existing enamel. If the wear has exposed the dentine, the tooth will look more yellow. Whitening can help, but the cosmetic result is usually better with bonding or veneers for worn teeth.

Ready to start?

A 30-minute consultation at our Dentist Marsden Park practice is the right place to start. We will look at the wear pattern, identify the cause, and recommend the right treatment for your case. For acute pain from a worn or cracked tooth, our emergency dentistry service handles same-day cases. The check-up appointment is the right place for routine assessment. We regularly see patients from neighbouring St Marys and across the wider northwest Sydney corridor. Book online or call our practice.