Tooth sensitivity disrupts daily eating and drinking habits for many adults across Fletcher, Newcastle, Wallsend, Shortland, Minmi, Maryland and Lenaghan. Fletcher Dental Care provides comprehensive diagnostic and sensitive teeth treatment for patients experiencing dentine hypersensitivity. Our clinical team identifies the underlying cause of the pain and applies targeted dental interventions to restore oral comfort.
What Is Tooth Sensitivity?
Tooth sensitivity is a sharp, brief pain in one or more teeth triggered by thermal or chemical changes. Dentists refer to this condition clinically as dentine hypersensitivity. The pain occurs when external stimuli disrupt the sensitive inner structures of the tooth.
The hydrodynamic theory explains this pain mechanism. Inside every tooth, a porous tissue called dentine contains thousands of microscopic tubules. These tubules contain fluid and extend from the outer enamel layer to the inner dental pulp, where the tooth’s nerve resides. When exposed dentine encounters temperature or osmotic changes, the fluid inside the tubules moves rapidly. This rapid fluid movement stimulates the nerve endings at the centre of the tooth, causing a sudden, sharp pain signal.
According to the Australian Research Centre for Population Oral Health, approximately 20% of Australian adults experience some degree of dentine hypersensitivity. The condition frequently affects adults aged 20 to 40 years, although it can occur at any age. Teeth sensitive to cold represent the most common clinical presentation. Healthy teeth rely on intact tooth enamel and healthy gum tissue to protect the underlying dentine layer from external stimuli. When this protective barrier breaks down, tooth sensitivity develops.
What Causes Sensitive Teeth?
Sensitive teeth causes stem from 8 specific factors that expose the underlying dentine tubules to the oral environment. The protective enamel layer covers the crown of the tooth above the gum line, while a material called cementum covers the tooth root. When enamel or cementum disappears, the dentine layer loses its insulation.
- Receding gums expose root surfaces. Roots lack a protective enamel layer, making the underlying dentine highly vulnerable to temperature changes. Periodontal disease and aggressive brushing frequently cause gum recession.
- Eroding enamel results from frequent consumption of acidic foods and drinks. Citrus fruits, soft drink, wine and vinegar dressings lower the pH level in the mouth, dissolving the calcium and phosphate minerals that form the enamel matrix.
- Progressing tooth decay creates cavities that penetrate through the enamel and reach the dentine layer. Oral bacteria produce acid as a byproduct of sugar metabolism, accelerating this decay process.
- Fracturing or chipping a tooth physically exposes the internal dentine structure. Physical trauma from sporting injuries, accidental falls or biting hard objects creates microscopic cracks.
- Wearing down or leaking fillings fails to protect the tooth structure. Old amalgam or composite fillings degrade over time, creating microscopic gaps between the filling material and the natural tooth.
- Grinding teeth, known clinically as bruxism, thins the enamel over time. The masseter muscles generate immense physical force during sleep, wearing down the occlusal surfaces of the molars and premolars.
- Brushing aggressively with a hard-bristled brush causes physical cervical abrasion. The mechanical friction wears away the enamel near the gum line, creating deep notches in the tooth root.
- Undertaking recent dental procedures like fillings, crowns or professional bleaching causes temporary nerve irritation. The dental drill generates heat and vibration, causing inflammatory sensitivity that usually resolves within 2 to 4 weeks.
What Are the Symptoms of Tooth Sensitivity?
The primary symptom of tooth sensitivity is a sudden, sharp pain triggered by specific foods, drinks or environmental factors. This pain acts as an alarm signal indicating that the tooth’s protective layers have broken down. Patients visiting Fletcher Dental Care report distinct patterns of discomfort.
Patients experience sharp pain when consuming cold foods or drinks. Ice cream, cold water and refrigerated fruit trigger immediate nerve responses. Breathing cold air during winter months also induces sudden tooth pain. Discomfort frequently occurs when consuming hot foods like soups or hot beverages. Patients also report a sharp twinge when eating sweet or acidic foods, as sugar and acid create osmotic gradients in the dentine tubules.
This pain remains brief and stops quickly once the patient removes the trigger. The sensation localises to one specific tooth or generalises across multiple teeth, depending on the underlying cause.
Patients must distinguish sensitivity from a toothache. Sensitivity features brief, triggered pain that resolves rapidly. A toothache features constant, throbbing pain that does not stop. A constant, radiating toothache indicates pulp infection or dental abscess requiring immediate dental emergencies intervention.
How Do Dentists Diagnose Tooth Sensitivity?
Dentists diagnose dentine hypersensitivity by conducting a detailed physical examination and reviewing the patient’s pain history. Identifying the specific cause forms the foundation of effective treatment, as interventions differ dramatically depending on the source of the exposure.
Dentists first review the history of triggers and pain patterns. Knowing whether the pain responds to cold, heat, sweetness or pressure helps narrow the diagnostic field. Next, the dentist performs a visual examination to check for gum recession, enamel erosion, hairline cracks and leaking fillings.
The clinical diagnosis relies on specific provocation tests. The dentist performs an air blast test using a standard dental air syringe to direct a stream of cold air onto isolated teeth. A positive pain response identifies the exact sensitive area. Following this, a cold test applies a specific thermal stimulus, such as a refrigerant spray on a cotton pellet, to individual teeth.
Dental X-rays provide sub-surface diagnostic data. Bitewing and periapical radiographs reveal hidden decay between teeth, periapical abscesses or structural root damage. Finally, the dentist may use transillumination, directing a high-intensity light directly through the tooth to detect hairline cracks invisible to the naked eye. Patients can arrange these diagnostic procedures during their routine check-ups and professional cleans.
How Is Tooth Sensitivity Treated?
Sensitive teeth treatment varies based on the underlying diagnosis. Fletcher Dental Care provides targeted clinical interventions ranging from in-office fluoride treatments to restorative surgical procedures.
Exposed roots from gum recession require professional fluoride varnish application or dedicated desensitising agents. Dentists apply concentrated fluoride directly to the exposed root surfaces to block the dentine tubules. For severe recession cases, periodontal gum disease treatment or gum grafting surgery covers the exposed roots permanently.
Enamel erosion management involves professional remineralising treatments and dietary counselling. When erosion creates structural defects, the dentist applies composite bonding to cover the damaged areas and replace the lost enamel.
Tooth decay treatment requires the removal of the active infection. The dentist cleans the cavity and places a composite filling to seal the tooth and stop bacterial progression.
Cracked teeth require structural reinforcement. Minor fractures receive composite bonding, while major structural splits require full coverage CEREC same-day crowns to prevent complete tooth fracture.
Leaky or worn fillings require replacement. The dentist removes the old, degraded material and places a new sealed restoration.
Bruxism management utilises a custom night splint or mouthguard. This acrylic appliance absorbs the physical grinding forces during sleep, protecting the enamel from further occlusal wear.
Post-treatment sensitivity requires ongoing monitoring. The inflammatory process within the dental pulp usually resolves naturally within 2 to 4 weeks as the nerve tissue calms.
What Can You Do at Home for Sensitive Teeth?
Managing teeth sensitive to cold involves 6 specific home care measures designed to minimise nerve irritation and protect the dentine layer. These strategies support clinical treatments and help prevent future sensitivity.
- Switch to a desensitising toothpaste containing potassium nitrate or stannous fluoride. Potassium nitrate depolarises the nerve endings inside the tooth, preventing them from transmitting pain signals. Stannous fluoride creates a protective mineral barrier over the exposed dentine.
- Apply a soft-bristled brush using gentle circular motions. Hard bristles and sawing motions physically abrade the cervical enamel at the gum line.
- Limit acidic foods and drinks, or flush the mouth with water immediately after consuming them. Rinsing with neutral pH water helps restore healthy oral acidity levels.
- Delay brushing for 30 minutes after eating acidic foods. Acid temporarily softens the enamel matrix, meaning immediate brushing physically brushes away the weakened mineral layer.
- Rinse daily with a fluoride mouthwash. A neutral sodium fluoride rinse strengthens the enamel and provides additional mineral protection for exposed root surfaces.
- Cease using whitening toothpastes. These products contain harsh abrasives designed to remove surface stains, which simultaneously scour the protective enamel layer and worsen sensitivity.
What Are the Costs of Sensitivity Treatment?
The costs of treating sudden tooth sensitivity vary significantly based on the required clinical procedure and complexity. Fletcher Dental Care provides itemised treatment plans following the diagnostic phase so patients understand their financial commitment.
Desensitising toothpaste incurs a low cost. Patients can purchase over-the-counter sensitive toothpaste from pharmacies for approximately $10 to $15. Professional fluoride varnish application carries a low cost and is often included in a standard recall examination.
Composite bonding for exposed root surfaces represents a moderate cost. Dental practices typically charge between $200 and $450 per tooth for direct composite restorations. A custom night splint for grinding involves a moderate cost, generally ranging from $400 to $600, reflecting the laboratory fabrication process.
Gum grafting surgery for severe gum recession requires a higher financial investment. Periodontal surgical procedures often cost between $800 and $1,500 per tooth, depending on the surgical complexity.
Fletcher Dental Care operates HICAPS terminals for on-the-spot health fund claims, reducing the out-of-pocket expense for patients with private dental cover. The clinic offers Child Dental Benefits Schedule (CDBS) bulk billing for eligible children, providing up to $1,095 in covered dental services over a two-year calendar period. A professional diagnosis saves money long-term. Treating the wrong cause wastes financial resources and delays proper clinical care.
What Happens If You Ignore Tooth Sensitivity?
Ignoring tooth sensitivity leads to worsening structural damage, severe dental infections and eventual tooth loss. Sensitivity acts as an early biological warning signal, not the core disease itself. The underlying structural failure will continue to progress without clinical intervention.
Enamel erosion deepens over time. As the protective layers thin, the decay process accelerates. Oral bacteria penetrate deeper into the tooth structure, reaching the dentine layer where they multiply rapidly. Decay progresses rapidly toward the dental pulp, the innermost chamber containing blood vessels and the tooth nerve.
Cracks extend further into the tooth root under constant biting pressure. Unstable cracks eventually split the tooth root entirely, making the tooth non-restorable and requiring surgical extraction.
The condition eventually transforms from brief sensitivity into a constant, throbbing toothache. Once bacteria invade the dental pulp, the nerve tissue becomes necrotic. This infection spreads through the root apex into the surrounding jawbone, creating a periapical abscess.
Patients often alter their diet to avoid cold foods and drinks, reducing their nutritional intake and overall quality of life. Patients may begin chewing exclusively on one side of their mouth to avoid the pain. This unequal bite force distribution causes temporomandibular joint (TMJ) dysfunction and chronic muscle spasms, requiring intervention via targeted TMJ therapies.
How Can You Prevent Tooth Sensitivity?
Preventing a tooth sensitive to hot and cold requires 7 daily preventative habits focused on preserving the enamel thickness and maintaining healthy gum tissue. Consistent oral hygiene remains the most effective preventative measure.
- Brush twice daily using a soft brush and a fluoride toothpaste. Fluoride remineralises microscopic enamel defects before they become structural cavities.
- Floss daily to prevent interdental decay. Dental floss removes bacterial plaque from between the teeth where the toothbrush cannot reach.
- Limit acidic foods and drinks. Consume citrus fruits, soft drinks and wine in moderation, and drink water immediately afterwards to dilute the oral acid.
- Attend 6-monthly check-ups and professional cleans at Fletcher Dental Care. Regular scale and clean appointments remove hardened calculus deposits that cause gum recession.
- Wear a night splint if you grind your teeth. A professionally fitted dental splint prevents the mechanical enamel wear caused by nocturnal bruxism.
- Avoid brushing immediately after vomiting or experiencing acid reflux. Stomach acid highly erodes dental enamel. Rinse thoroughly with water to neutralise the acid instead of spreading it with a toothbrush.
- Drink acidic beverages through a straw. Using a straw minimises fluid contact with the anterior teeth, protecting the enamel from direct acid exposure.
When Should You See a Dentist for Sensitive Teeth?
Patients should see a dentist for sensitive teeth if the pain lasts more than one week or localises to a single tooth. Sensitivity indicates a structural breach requiring professional evaluation.
Schedule an examination at Fletcher Dental Care if the sensitivity gets progressively worse over time. A worsening pain profile indicates advancing decay or deepening enamel loss.
Seek immediate dental care if the sensitivity accompanies any pain that lingers after the trigger disappears. Lingering pain indicates irreversible pulpitis, a condition where the dental nerve suffers permanent inflammatory damage.
Book an appointment if the pain prevents you from eating normally or disrupts your daily sleep patterns. Sensitivity affecting a single tooth requires urgent clinical attention. Isolated pain frequently indicates a structural crack or deep cavity that will not heal without direct restorative treatment. Call 02 4955 5869 to schedule a comprehensive assessment or contact Fletcher Dental Care directly through our website.
How Can You Book a Sensitivity Consultation at Fletcher Dental Care?
Booking a sensitivity consultation at Fletcher Dental Care connects you with an experienced team of dentists dedicated to eliminating dental pain. Our clinic operates from Monday to Friday, 8am to 6pm, and offers Saturday appointments from 7:30am to 1:30pm to accommodate working professionals.
Call our clinical team directly at 02 4955 5869 to schedule your diagnostic appointment. Visit the practice at Shop 16/221 Minmi Rd, Fletcher NSW 2287.
Fletcher Dental Care houses four highly qualified dentists with over 60 years of combined clinical experience. Dr Mahmoud Abouelenein holds a Bachelor of Dental Surgery, Fellow of the Royal Australasian College of Dental Surgeons and a Graduate Diploma in Clinical Dentistry (Oral Implants) from the University of Sydney. Dr Mohamed Omar holds memberships with the Royal College of Surgeons Edinburgh. Dr Sherif Ibrahim holds American National Dental Board certification and specialises in oral surgery and orthodontics. Dr Amy Richards provides comprehensive general dental care with a focus on preventative patient education.
The practice provides wheelchair accessible facilities and HICAPS health fund claiming for all major private health funds. This page was medically reviewed in July 2026 by Dr Mahmoud Abouelenein, BDS, FRACDS, who brings 20+ years of clinical experience treating dentine hypersensitivity. Reference: Australian Research Centre for Population Oral Health (ARCPOH) tooth sensitivity prevalence data. Australian Dental Association (ADA) clinical guidelines on dentine hypersensitivity management. To learn more about our preventative care philosophy, read more about Fletcher Dental Care.
Frequently Asked Questions
Can tooth sensitivity go away on its own?
Tooth sensitivity resolves independently only if a recent dental procedure caused temporary nerve inflammation. This post-operative sensitivity naturally diminishes within 2 to 4 weeks. Sensitivity caused by structural issues like enamel erosion, gum recession or tooth decay requires clinical intervention to repair the damaged tooth structure. Schedule a diagnostic review if the pain persists. Read about our diagnostic process on our sensitive teeth page.
What is the best toothpaste for sensitive teeth?
The best toothpaste for sensitive teeth contains either 5% potassium nitrate or stannous fluoride as the active ingredient. Potassium nitrate calms the dental nerve endings, preventing pain signal transmission. Stannous fluoride mineralises the enamel and physically occludes the open dentine tubules. Apply the toothpaste to the sensitive areas and spit without rinsing to maximise the therapeutic benefit. We discuss specific brands during your routine check-ups and professional cleans.
Why are my teeth suddenly sensitive?
Sudden tooth sensitivity frequently indicates a structural failure such as a cracked tooth, a leaking filling or rapid decay reaching the dentine layer. Changes in oral hygiene products, such as switching to an abrasive whitening toothpaste, also trigger rapid sensitivity onset. Receding gums from undiagnosed periodontal disease exposes vulnerable root surfaces rapidly. Book an urgent diagnostic appointment to identify the acute cause.
Can teeth whitening cause sensitivity?
Professional teeth whitening causes temporary sensitivity because the bleaching gel penetrates the enamel and reaches the dentine layer. The peroxide molecules alter the osmotic pressure within the dentine tubules, temporarily stimulating the nerve endings. This acute sensitivity typically peaks 48 hours after the bleaching procedure and completely resolves within one week. Your dentist applies professional fluoride treatments immediately after whitening to minimise this nerve response.
Is tooth sensitivity a sign of a cavity?
Tooth sensitivity is a primary clinical sign of an advanced cavity. When oral bacteria destroy the enamel and penetrate the underlying dentine layer, the exposed dentine tubules transmit hot, cold and sweet stimuli directly to the dental nerve. A dentist uses diagnostic X-rays to confirm whether decay caused the structural breach. If decay reaches the dentine, the dentist places a composite filling to seal the cavity and stop the sensitivity.
How much does professional desensitising treatment cost?
Professional desensitising treatment costs vary based on the clinical method required. A simple in-office fluoride varnish application generally costs between $35 and $60 per tooth. Applying professional desensitising agents costs a similar amount. Restorative treatments like composite bonding for severe abrasion defects cost between $200 and $450 per tooth. Surgical interventions like gum grafting cost significantly more. Patients with private health insurance can claim immediate HICAPS rebates for these treatments. Contact our team to discuss your specific dental emergencies or general treatment needs.