Acid Reflux, GERD and Tooth Erosion: A Townsville Patient's Guide to Saving Enamel

Acid Reflux, GERD and Your Teeth: How Stomach Acid Damages Enamel

Gastro-oesophageal reflux disease (GERD) affects roughly one in five Australian adults at some point in their lives. Many of those patients also have measurable damage to their teeth — and a meaningful proportion have no idea the two are connected.

This guide is for Townsville patients who have been diagnosed with reflux, who suspect they have silent reflux, who have a hiatus hernia, who have a history of bulimia or other vomiting disorders, or whose dentist has flagged an erosion pattern at a routine check-up.

It is written as patient education, not medical advice. Reflux is a medical condition — coordinate diagnosis and management with your GP. Dental damage from reflux is something your dentist treats and prevents alongside that medical care.

How Stomach Acid Damages Tooth Enamel

Tooth enamel is the hardest substance in the human body — but it is vulnerable to acid. Healthy mouth pH sits around 6.5 to 7.0. Tooth enamel begins to dissolve below approximately pH 5.5. Stomach acid sits at approximately pH 1.5 to 3.5 — well below that threshold, and chemically aggressive enough to dissolve enamel on contact.

When gastric acid enters the mouth — from belching, regurgitation, vomiting, or silent reflux — it dissolves the mineral matrix of enamel. With repeated exposure, enamel thins, the underlying dentine is exposed, and the tooth’s structure, sensitivity, and appearance change.

Critical distinctions:

• Erosion — chemical dissolution of enamel by acid
• Abrasion — mechanical wear from brushing, pen-chewing, or abrasive toothpastes
• Attrition — wear from tooth-on-tooth contact (grinding, clenching)
• Abfraction — cervical loss linked to bite forces

A patient with reflux often has a combination — erosion from acid plus attrition from grinding (which is common in reflux patients) plus possibly abrasion from over-vigorous brushing. Identifying the dominant cause matters because treatment differs.

The Pattern of Erosion Your Townsville Dentist Looks For

Erosion from gastric acid produces a distinctive distribution that experienced clinicians can recognise on examination:

Upper anterior teeth (incisors and canines):

• Thinning of the palatal (tongue-side) enamel
• Loss of enamel translucency
• A yellowish appearance from front view as exposed dentine shows through
• Chipping or notching of the incisal edges
• Loss of the natural mamelons and surface texture

Upper posterior teeth (premolars and molars):

• Cupped-out, shiny areas on the cusp tips
• Loss of normal occlusal anatomy
• Smooth, glassy enamel surfaces
• Restorations sitting proud above the surrounding tooth structure (the enamel has dissolved around them)

Lower posterior teeth:

• Similar cupped occlusal lesions
• Lower anterior teeth often relatively spared (the tongue protects them during reflux events)

Spared zones:

• Gingival margin enamel (where saliva pools and buffers acid)
• Areas covered by dental restorations
• Areas under partial dentures

This palatal-upper-front and occlusal-molar pattern is the classic acid wear signature. Dietary acid (citrus, sports drinks, soft drinks) typically affects the front facial surfaces and other patterns. The internal-acid pattern is what raises suspicion of reflux.

Who Should Suspect Reflux-Driven Erosion

You are at higher risk if you have:

• Diagnosed GERD with classic symptoms (heartburn, regurgitation, sour taste)
• Silent reflux or laryngopharyngeal reflux (chronic throat clearing, hoarseness, chronic cough without obvious cause)
• Hiatus hernia
• Pregnancy with significant reflux or hyperemesis (see our bleeding gums in pregnancy guide for related pregnancy oral-health context)
• A history of bulimia nervosa or other recurrent vomiting disorders
• Chronic alcohol use
• Conditions causing chronic vomiting — hyperemesis, cyclic vomiting syndrome, post-chemotherapy nausea
• Heavy use of acidic beverages alongside reflux symptoms
• A nightshift work pattern with late meals and supine sleep shortly after eating (see our shift-worker bruxism article)

What to Do Immediately After a Reflux Event

This is one of the most counter-intuitive but well-evidenced parts of erosion management:

Do not brush your teeth immediately after a reflux or vomiting episode.

After acid exposure, enamel is temporarily softened. Brushing immediately can mechanically scrub away the demineralised surface layer that would otherwise remineralise from saliva over the following hour or so. Recommended sequence:

1. Rinse with water — plain water, several swallows, to dilute and clear residual acid
2. Optional: rinse with a sodium bicarbonate solution (half a teaspoon in a glass of water) to buffer remaining acid
3. Wait at least 30 to 60 minutes before brushing
4. Use a soft-bristled toothbrush and a low-abrasive, fluoride toothpaste (high-fluoride toothpaste if your dentist has prescribed one)
5. Avoid acidic foods and drinks for at least 30 minutes after the reflux event

This single behaviour change — wait before brushing — meaningfully reduces enamel loss in chronic reflux patients.

What Your Townsville Dentist Will Do at the Examination

A patient presenting with suspected acid erosion will typically receive:

Visual and tactile examination:

• Mapped erosion zones using a standardised scoring system (such as the BEWE — Basic Erosive Wear Examination)
• Identification of cupped occlusal lesions, palatal anterior thinning, restorations sitting proud
• Photographic documentation for monitoring over time

X-rays:

• Bitewing X-rays to assess interproximal areas and existing restorations
• Periapical X-rays where individual teeth show concerning loss

Saliva assessment:

• Resting and stimulated saliva flow rates (low salivary flow accelerates erosion)
• Saliva pH and buffering capacity testing in some clinics

Risk factor history:

• Reflux symptoms and current management
• Vomiting history
• Dietary acid exposure
• Bruxism — see our shift-worker bruxism article and custom mouthguard guide
• Medications affecting saliva (many antidepressants, antihypertensives, antihistamines)

Referral:

• Letter to your GP if reflux is suspected but not yet investigated
• Referral for medical assessment of vomiting disorders where appropriate

Treatment Options: From Prevention to Full-Mouth Rehabilitation

Stage 1: Prevention and Stabilisation

For early erosion or as the foundation for any erosion patient:

• High-fluoride toothpaste (5000 ppm fluoride, prescription) — strengthens remaining enamel and reduces sensitivity
• In-office fluoride varnish every three to six months — see our fluoride treatment service page
• Behavioural changes — wait before brushing after reflux, avoid acidic drinks, address dry mouth
• Mouthguard or splint if bruxism is contributing — see our custom mouthguard guide
• Coordinated reflux management with your GP

Stage 2: Restoring Lost Tooth Structure

For established erosion with sensitivity, aesthetic concerns, or functional impairment:

• Composite resin restorations — bonded directly to teeth to rebuild lost enamel and reduce sensitivity. Typically the first restorative step, conservative, and reversible.
• Composite veneers for anterior teeth — see our composite veneers service page and composite vs porcelain veneers comparison
• Onlays and inlays for posterior teeth — see our ceramic inlays and onlays page

Stage 3: Full-Mouth Rehabilitation

For severe, generalised erosion that has affected vertical dimension and bite:

• Planned, staged restoration of multiple teeth — see our full mouth reconstruction service page
• Combination of porcelain crowns, onlays, and veneers to restore both function and aesthetics
• Possibly involving an articulator-based bite analysis and provisional restorations before final work
• Cost typically a five-figure investment spread across months — see our dental payment plans guide for financing context

In every case: the medical reflux must be controlled before or in parallel with restorative work, otherwise the new restorations are subjected to the same acid that destroyed the original enamel.

Bulimia, Eating Disorders, and Dental Care

For patients with a current or past eating disorder involving recurrent vomiting (bulimia nervosa, anorexia nervosa with purging, binge eating disorder), the dental implications are substantial and require sensitive, non-judgemental care.

A well-prepared Townsville dentist will:

• Discuss findings privately and without shame
• Coordinate with the patient’s psychologist, GP, or eating disorder service where the patient consents
• Focus first on prevention strategies appropriate to active disordered eating (rinse with water, avoid brushing immediately, fluoride supplementation)
• Defer extensive restorative work until the underlying disorder is in stable management, where clinically possible
• Maintain regular monitoring through recovery

The Butterfly Foundation and Eating Disorders Queensland are the primary support services for Australian patients with eating disorders. Your GP can refer for appropriate care.

Hyperemesis Gravidarum and Pregnancy

For pregnant patients with severe morning sickness or hyperemesis gravidarum, repeated vomiting can cause meaningful enamel erosion within a relatively short period.

Practical management during pregnancy:

• Rinse with water immediately after vomiting
• Use bicarbonate of soda rinse where tolerated
• Wait before brushing
• Use high-fluoride toothpaste (safe in pregnancy)
• Maintain regular dental check-ups — see our dental care during pregnancy article and bleeding gums in pregnancy guide
• Restorative work, if needed, is typically deferred to the second trimester or post-partum

Self-Assessment: Should You Book a Dental Erosion Check?

A short checklist. If you tick three or more, an erosion-focused dental check is worth booking:

• I have been diagnosed with GERD or take a PPI
• I get heartburn or regurgitation more than once a week
• I have a hiatus hernia
• I have a history of an eating disorder involving vomiting
• I have hyperemesis or significant reflux during pregnancy
• I notice my teeth feel sensitive to hot, cold, or sweet
• The biting surfaces of my back teeth look smooth and shiny
• The inside of my front teeth has a translucent or thinning appearance
• My fillings seem to be sitting proud of the tooth surface
• My teeth look more yellow than they used to (without staining)
• I have been told I grind my teeth at night
• I have noticed chips or notches on my front teeth

Our contact page lists current clinic hours.

Health Fund and Public Sector Considerations

Private health insurance extras: Restorative work for erosion is claimable under the same general or major dental categories as any restorative work — composite restorations under general dental, crowns under major dental. Frequency limits and annual caps apply. See our HBF preferred providers, Bupa preferred dentists, Medibank preferred dentists, and nib preferred dentists Townsville guides.

DVA Gold Card holders: Full clinical dental care including restorative work for erosion. See our DVA dental in Townsville article.

Pensioners: Queensland Health public dental services prioritise pain and infection over restorative work for erosion — extensive erosion treatment is typically pursued through private channels. See our free dental care for Queensland pensioners article.

The Bottom Line for Townsville Patients With Reflux

Acid reflux affects teeth in a recognisable, treatable pattern. The earlier the dental and medical sides of management start, the less restorative work you will eventually need.

Five practical habits:

1. If you have reflux, mention it at every dental visit — it changes how your dentist examines and what they recommend.
2. Wait at least 30 minutes before brushing after a reflux event — this single change preserves enamel.
3. Ask your GP whether your reflux control is adequate if your dentist sees ongoing erosion despite treatment.
4. Get a dental check every six months — or more frequently if erosion is active — early restoration is conservative; late restoration is full-mouth rehabilitation.
5. Use a soft-bristled toothbrush and a low-abrasive fluoride toothpaste — and ask your dentist about prescription high-fluoride options.

Our services overview lists preventive and restorative options. We see reflux and erosion patients regularly and coordinate with GPs across Townsville for shared care.