Tooronga Family Dentistry in Glen Iris

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Sudden Sharp Pain When Chewing — What Is It and What Should You Do?

Posted on 06.10.26

Sharp pain when you bite down is one of those symptoms that’s hard to ignore — and shouldn’t be.

A sudden, sharp pain when chewing is your tooth signalling that something is structurally or biologically wrong. Unlike the dull ache of a developing cavity or the generalised sensitivity of enamel erosion, pain specifically triggered by biting or chewing is highly localised and diagnostically meaningful. It narrows the possible causes considerably — and most of them require professional assessment rather than watchful waiting.

Why biting causes pain — the underlying mechanics

When you chew, you apply significant force through your teeth — the average bite force on a molar is between 400 and 800 newtons. In a healthy tooth this force is distributed evenly through intact tooth structure and absorbed by the periodontal ligament — the fibrous tissue suspending the tooth in its socket. Pain occurs when this force encounters a structural defect, an inflamed ligament, or an exposed nerve — concentrating stress in a way that triggers an acute pain response.

The most common causes of sharp pain when chewing

Cracked tooth syndrome The most common and frequently missed cause of sharp biting pain. A crack in a tooth — often invisible on X-ray and sometimes invisible to the naked eye — creates an unstable segment of tooth structure that flexes under biting load. This flexion stimulates the nerve acutely, producing a sharp pain that typically occurs on biting down and releases suddenly when pressure is removed. The pain on release is particularly characteristic of a cracked tooth.

Cracks most commonly affect back teeth and are strongly associated with large old fillings that have weakened surrounding tooth structure, grinding and clenching, and biting hard objects. Ice chewing is a surprisingly common precipitating factor.

The challenge with cracked tooth syndrome is that the crack may not be visible on X-ray, making diagnosis dependent on clinical testing — bite testing with a specialised instrument on individual cusps, transillumination with a bright light to reveal crack lines, and dye staining. An experienced clinician can usually identify the offending tooth and cusp with targeted testing.

Treatment depends on crack depth. A crack confined to enamel and dentine is typically managed with a crown, which holds the tooth together and prevents the crack propagating further. A crack extending into the pulp requires root canal treatment before the crown. A crack extending below the gumline into the root — a vertical root fracture — often cannot be saved and requires extraction.

A failing or fractured filling An old filling — particularly a large amalgam filling — can fracture or develop a crack in the surrounding tooth structure over time. The remaining tooth walls, unsupported and weakened, flex under load and produce sharp pain. Sometimes the fractured cusp is visible; sometimes it requires magnification to identify. Treatment typically involves replacing the filling with a crown or onlay to restore structural integrity.

Decay beneath an existing restoration Secondary decay — decay developing at the margin of an existing filling or crown — undermines the restoration and the tooth structure beneath it. Biting load applied to a compromised tooth produces pain. X-rays are usually diagnostic. Treatment involves removing the failing restoration, excavating the decay, and replacing with a new filling or crown depending on the extent of destruction.

Periodontal abscess or acute gum infection An abscess in the gum tissue or periodontal ligament causes exquisite sensitivity to biting — the inflamed ligament cannot absorb occlusal load normally. Unlike pulp-related pain, periodontal pain tends to be more constant, associated with visible swelling or a pimple on the gum, and often accompanied by a bad taste. The tooth is typically tender to touch on its side as well as to biting. Treatment involves draining the abscess, cleaning the periodontal pocket, and antibiotic therapy where indicated.

Reversible pulpitis Inflammation of the pulp — from deep decay, a recent filling, or trauma — can cause pain on biting before progressing to spontaneous aching. At this stage the inflammation may still be reversible with appropriate treatment. A recently placed filling that produces biting pain may simply require adjustment of the bite — a high filling concentrates occlusal force on the restored tooth and causes disproportionate discomfort.

Irreversible pulpitis and pulp necrosis When pulp inflammation progresses beyond the reversible stage, biting pain is typically accompanied by spontaneous aching, sensitivity to heat that lingers, and eventually the development of an abscess. This requires root canal treatment or extraction — not a wait-and-see approach.

Dentine hypersensitivity at a specific tooth Localised enamel loss or root exposure at a single tooth can produce sharp pain with certain foods or biting pressures. This is typically less severe than crack-related pain and more consistently triggered by specific stimuli — cold, sweet, or acidic — rather than pure biting force.

Loose crown or broken tooth A crown that has lost its cementation moves fractionally under load, producing sharp pain or sensitivity. This is usually identifiable — the crown may feel slightly mobile or different under biting pressure. A loose crown requires re-cementation promptly; leaving it risks decay developing on the exposed tooth preparation underneath.

Diagnosing the cause — why this requires professional assessment

Sharp biting pain cannot be reliably self-diagnosed. Several of the causes above — particularly cracked tooth syndrome — are genuinely difficult to identify even clinically and require systematic testing. Attempting to diagnose by process of elimination at home wastes time and allows potentially serious conditions to progress.

At Tooronga Family Dentistry we use a structured diagnostic protocol for biting pain:

  • Detailed history — when does it occur, which tooth, biting down or releasing, hot or cold sensitivity, spontaneous pain
  • Visual examination with magnification and transillumination
  • Bite testing with a Tooth Slooth — isolating individual cusps to identify the exact site of pain
  • Percussion testing — tapping teeth to assess periodontal ligament involvement
  • Thermal testing — cold and heat to assess pulp status
  • Digital X-rays — assessing for decay, bone loss, abscess, and restoration integrity
  • Probing — assessing gum pocket depths around the affected tooth

This systematic approach almost always identifies the cause — even when the crack or defect is not immediately visible. The diagnostic appointment is the most important step.

Why you should not delay assessment

Sharp biting pain rarely resolves spontaneously. The underlying causes — cracks, decay, failing restorations, pulp inflammation — are progressive. A cracked tooth diagnosed and crowned early is saved. The same tooth left until the crack propagates into the root is extracted. A deep cavity causing biting pain that is treated now may need only a filling. Left until the pulp is involved it needs root canal treatment and a crown.

The window for conservative treatment is open now. It closes progressively with time.

Immediate measures while waiting for your appointment

  • Avoid chewing on the affected side
  • Avoid very hard foods — crusty bread, nuts, raw carrots — that concentrate biting force
  • Avoid temperature extremes if thermal sensitivity is also present
  • Take paracetamol or ibuprofen at recommended doses for pain management
  • Do not attempt to diagnose or treat by biting on something to identify the tooth — this risks propagating a crack further

Experiencing sharp pain when you chew? This is not something to monitor at home. Book an assessment at Tooronga Family Dentistry — we see patients from Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton and have the diagnostic tools and clinical experience to identify the cause accurately and treat it promptly.

Broken Tooth — What to Do and When It’s an Emergency

Posted on 06.10.26

A broken tooth ranges from a minor chip to a dental emergency. Knowing which one you’re dealing with — and acting appropriately — makes a significant difference to the outcome.

Teeth break for many reasons — biting on something hard, a fall or impact, an existing large filling that has weakened the surrounding structure, or grinding that has progressively thinned enamel to the point of fracture. Whatever the cause, a broken tooth always warrants professional assessment. The visible damage on the surface rarely tells the complete story of what has happened beneath it.

How broken teeth are classified

Not all tooth fractures are equal. Dentists classify tooth fractures by depth and location, which determines both urgency and treatment options.

Craze lines Superficial cracks confined entirely to the outer enamel surface. Extremely common, particularly in adults over 40. They cause no symptoms, require no treatment, and are clinically insignificant. They are worth knowing about because patients sometimes notice them and worry — they are a normal consequence of a lifetime of chewing.

Fractured cusp A piece of the biting surface of a tooth — typically a cusp — breaks away, usually around an existing filling. Often produces sharp sensitivity rather than severe pain, as the fracture may not extend into the pulp. The broken piece may detach completely or remain partially connected. Treatment typically involves a new filling, onlay, or crown depending on the size of the fracture and remaining tooth structure.

Cracked tooth A crack extending from the biting surface downward toward the root. This is the most diagnostically challenging fracture type because it is frequently invisible on X-ray and may not be obvious visually. Symptoms — sharp pain on biting, sensitivity to cold, discomfort on release of biting pressure — are the primary diagnostic indicators. Treatment depends on crack depth: a crown for cracks confined to the crown of the tooth, root canal treatment plus crown if the pulp is involved, extraction if the crack extends below the bone level.

Split tooth A cracked tooth that has propagated completely through the tooth, dividing it into two distinct segments. A split tooth cannot be saved intact. Depending on the position of the split, one segment may occasionally be retained, but most split teeth require extraction.

Vertical root fracture A crack originating in the root and extending upward. Often associated with root-filled teeth where the root has become brittle over time. Frequently asymptomatic until surrounding bone loss occurs — making it one of the more insidious fracture types. Typically identified on X-ray by a characteristic halo pattern of bone loss around the root. Almost always requires extraction.

Traumatic fracture — crown fracture involving enamel and dentine Common in anterior teeth following impact — a fall, sports injury, or collision. The fracture exposes dentine, producing sensitivity. If the pulp is not exposed, the prognosis with prompt treatment is very good. If the pulp is exposed — visible as a pink or red dot at the fracture surface — urgent treatment is required to prevent infection.

What to do immediately after breaking a tooth

  1. Assess the situation Run your tongue carefully over the broken area. Note whether there is sharp pain, sensitivity, bleeding from the gum, or a visible pink or red area at the fracture site. These findings indicate urgency.
  2. Retrieve any broken fragments If a piece of tooth has broken off, store it in milk, saline, or inside your cheek — not in water, which damages the cells on the root surface. A fragment can sometimes be bonded back in place, particularly for front teeth, providing an excellent aesthetic result.
  3. Manage sharp edges A broken tooth with a sharp edge can lacerate the tongue and cheek. Dental wax from a pharmacy can be pressed over the sharp edge as a temporary measure. Sugar-free chewing gum is an alternative in an emergency.
  4. Pain management Paracetamol and ibuprofen at recommended doses for pain relief. Clove oil applied to the broken area provides additional topical relief. Avoid temperature extremes — hot and cold — that will exacerbate sensitivity through the exposed dentine.
  5. Contact your dentist promptly Even a broken tooth that is not causing significant pain requires assessment within a few days. Exposed dentine is vulnerable to bacterial invasion, and a fracture that appears minor externally can have implications below the gumline that are not apparent without clinical examination and X-rays.

When a broken tooth is a dental emergency

Some broken teeth require same-day or next-day attention. Contact Tooronga Family Dentistry urgently if:

  • The pulp is visibly exposed — pink or red tissue visible at the fracture site
  • There is significant bleeding from the tooth or surrounding gum that does not settle
  • The tooth is mobile or has been partially displaced from its socket
  • There is severe uncontrolled pain
  • The fracture involves a child’s tooth — primary or permanent
  • The injury involves the jaw, other facial structures, or head trauma

A tooth that has been completely knocked out — avulsed — is a true dental emergency. Reimplantation within 30 minutes gives the best chance of saving the tooth. Handle the tooth by the crown only, rinse gently without scrubbing the root, store in milk or saline, and contact us immediately. Time is the critical variable.

How Tooronga Family Dentistry treats broken teeth

Composite bonding For minor chips and fractures involving enamel and superficial dentine — particularly on front teeth — composite resin bonding restores shape, function and aesthetics in a single appointment. Where a fragment has been retained, bonding it back into place is often the most aesthetically precise option.

Fillings and onlays For fractured cusps and moderate fractures on back teeth, a new direct composite filling or a laboratory-fabricated onlay restores the tooth. An onlay is preferable where the remaining tooth walls are thin or unsupported — it covers and protects the cusps rather than simply filling space.

Crowns The definitive restoration for a cracked tooth, a tooth with a large fracture, or any tooth where the remaining structure needs to be held together and protected from further fracture propagation. A crown encircles the entire tooth, distributing biting forces evenly and preventing the flexion that causes crack-related pain. For cracked teeth in particular, crowning is not simply restorative — it is protective.

Root canal treatment Required when a fracture has involved or compromised the pulp. Root canal treatment removes the pulp tissue, disinfects the root canal system, and prepares the tooth for crown placement. A root-treated tooth that is promptly and properly restored with a crown has a very good long-term prognosis.

Extraction and replacement Where a fracture extends below the bone level, or a vertical root fracture is present, extraction is the appropriate treatment. We discuss tooth replacement options — dental implant, bridge, or partial denture — at the time of extraction planning so that the long-term treatment pathway is clear from the outset.

Splinting for traumatic injuries A tooth that has been displaced or loosened by trauma may be splinted — bonded to adjacent teeth with a flexible wire and composite — to allow the periodontal ligament to heal and the tooth to stabilise. Splinting is typically maintained for two to four weeks, with the tooth monitored for pulp health in the months following injury.

Preventing broken teeth

Many tooth fractures are preventable with appropriate protective measures:

  • Custom mouthguard for all contact and collision sports — a professionally made mouthguard from Tooronga Family Dentistry provides significantly better protection than a boil-and-bite alternative from a sports store
  • Nightguard for grinding — bruxism is one of the most common causes of tooth fracture; a custom occlusal splint protects enamel and existing restorations from the forces of nocturnal grinding
  • Replacing large old amalgam fillings proactively — large amalgam restorations weaken surrounding tooth structure over decades; replacing them with bonded composite or covering with a crown before fracture occurs is sound preventive planning
  • Avoiding hard objects — ice, hard lollies, unpopped popcorn kernels, using teeth as tools — these are among the most common precipitants of acute tooth fractures in otherwise healthy teeth

Broken a tooth? Don’t wait to see if it settles. Book an assessment at Tooronga Family Dentistry — we see patients from Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton promptly and have the clinical tools to assess, diagnose and treat the full range of tooth fractures.

Sudden Sharp Pain When Chewing — What Is It and What Should You Do?

Posted on 06.9.26

Sharp pain when you bite down is one of those symptoms that’s hard to ignore — and shouldn’t be.

A sudden, sharp pain when chewing is your tooth signalling that something is structurally or biologically wrong. Unlike the dull ache of a developing cavity or the generalised sensitivity of enamel erosion, pain specifically triggered by biting or chewing is highly localised and diagnostically meaningful. It narrows the possible causes considerably — and most of them require professional assessment rather than watchful waiting.

Why biting causes pain — the underlying mechanics

When you chew, you apply significant force through your teeth — the average bite force on a molar is between 400 and 800 newtons. In a healthy tooth this force is distributed evenly through intact tooth structure and absorbed by the periodontal ligament — the fibrous tissue suspending the tooth in its socket. Pain occurs when this force encounters a structural defect, an inflamed ligament, or an exposed nerve — concentrating stress in a way that triggers an acute pain response.

The most common causes of sharp pain when chewing

Cracked tooth syndrome The most common and frequently missed cause of sharp biting pain. A crack in a tooth — often invisible on X-ray and sometimes invisible to the naked eye — creates an unstable segment of tooth structure that flexes under biting load. This flexion stimulates the nerve acutely, producing a sharp pain that typically occurs on biting down and releases suddenly when pressure is removed. The pain on release is particularly characteristic of a cracked tooth.

Cracks most commonly affect back teeth and are strongly associated with large old fillings that have weakened surrounding tooth structure, grinding and clenching, and biting hard objects. Ice chewing is a surprisingly common precipitating factor.

The challenge with cracked tooth syndrome is that the crack may not be visible on X-ray, making diagnosis dependent on clinical testing — bite testing with a specialised instrument on individual cusps, transillumination with a bright light to reveal crack lines, and dye staining. An experienced clinician can usually identify the offending tooth and cusp with targeted testing.

Treatment depends on crack depth. A crack confined to enamel and dentine is typically managed with a crown, which holds the tooth together and prevents the crack propagating further. A crack extending into the pulp requires root canal treatment before the crown. A crack extending below the gumline into the root — a vertical root fracture — often cannot be saved and requires extraction.

A failing or fractured filling An old filling — particularly a large amalgam filling — can fracture or develop a crack in the surrounding tooth structure over time. The remaining tooth walls, unsupported and weakened, flex under load and produce sharp pain. Sometimes the fractured cusp is visible; sometimes it requires magnification to identify. Treatment typically involves replacing the filling with a crown or onlay to restore structural integrity.

Decay beneath an existing restoration Secondary decay — decay developing at the margin of an existing filling or crown — undermines the restoration and the tooth structure beneath it. Biting load applied to a compromised tooth produces pain. X-rays are usually diagnostic. Treatment involves removing the failing restoration, excavating the decay, and replacing with a new filling or crown depending on the extent of destruction.

Periodontal abscess or acute gum infection An abscess in the gum tissue or periodontal ligament causes exquisite sensitivity to biting — the inflamed ligament cannot absorb occlusal load normally. Unlike pulp-related pain, periodontal pain tends to be more constant, associated with visible swelling or a pimple on the gum, and often accompanied by a bad taste. The tooth is typically tender to touch on its side as well as to biting. Treatment involves draining the abscess, cleaning the periodontal pocket, and antibiotic therapy where indicated.

Reversible pulpitis Inflammation of the pulp — from deep decay, a recent filling, or trauma — can cause pain on biting before progressing to spontaneous aching. At this stage the inflammation may still be reversible with appropriate treatment. A recently placed filling that produces biting pain may simply require adjustment of the bite — a high filling concentrates occlusal force on the restored tooth and causes disproportionate discomfort.

Irreversible pulpitis and pulp necrosis When pulp inflammation progresses beyond the reversible stage, biting pain is typically accompanied by spontaneous aching, sensitivity to heat that lingers, and eventually the development of an abscess. This requires root canal treatment or extraction — not a wait-and-see approach.

Dentine hypersensitivity at a specific tooth Localised enamel loss or root exposure at a single tooth can produce sharp pain with certain foods or biting pressures. This is typically less severe than crack-related pain and more consistently triggered by specific stimuli — cold, sweet, or acidic — rather than pure biting force.

Loose crown or broken tooth A crown that has lost its cementation moves fractionally under load, producing sharp pain or sensitivity. This is usually identifiable — the crown may feel slightly mobile or different under biting pressure. A loose crown requires re-cementation promptly; leaving it risks decay developing on the exposed tooth preparation underneath.

Diagnosing the cause — why this requires professional assessment

Sharp biting pain cannot be reliably self-diagnosed. Several of the causes above — particularly cracked tooth syndrome — are genuinely difficult to identify even clinically and require systematic testing. Attempting to diagnose by process of elimination at home wastes time and allows potentially serious conditions to progress.

At Tooronga Family Dentistry we use a structured diagnostic protocol for biting pain:

  • Detailed history — when does it occur, which tooth, biting down or releasing, hot or cold sensitivity, spontaneous pain
  • Visual examination with magnification and transillumination
  • Bite testing with a Tooth Slooth — isolating individual cusps to identify the exact site of pain
  • Percussion testing — tapping teeth to assess periodontal ligament involvement
  • Thermal testing — cold and heat to assess pulp status
  • Digital X-rays — assessing for decay, bone loss, abscess, and restoration integrity
  • Probing — assessing gum pocket depths around the affected tooth

This systematic approach almost always identifies the cause — even when the crack or defect is not immediately visible. The diagnostic appointment is the most important step.

Why you should not delay assessment

Sharp biting pain rarely resolves spontaneously. The underlying causes — cracks, decay, failing restorations, pulp inflammation — are progressive. A cracked tooth diagnosed and crowned early is saved. The same tooth left until the crack propagates into the root is extracted. A deep cavity causing biting pain that is treated now may need only a filling. Left until the pulp is involved it needs root canal treatment and a crown.

The window for conservative treatment is open now. It closes progressively with time.

Immediate measures while waiting for your appointment

  • Avoid chewing on the affected side
  • Avoid very hard foods — crusty bread, nuts, raw carrots — that concentrate biting force
  • Avoid temperature extremes if thermal sensitivity is also present
  • Take paracetamol or ibuprofen at recommended doses for pain management
  • Do not attempt to diagnose or treat by biting on something to identify the tooth — this risks propagating a crack further

Experiencing sharp pain when you chew? This is not something to monitor at home. Book an assessment at Tooronga Family Dentistry — we see patients from Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton and have the diagnostic tools and clinical experience to identify the cause accurately and treat it promptly.

Hole in a Tooth — What Should You Do?

Posted on 06.6.26

A hole in a tooth doesn’t fix itself. The longer it’s left, the more complex and costly the treatment becomes.

Discovering a hole in your tooth — whether you feel it with your tongue, notice it in the mirror, or a dentist points it out — is one of those moments where the temptation to wait and see is strong. Resist it. Tooth decay is a progressive disease. What is a small filling today becomes a large filling tomorrow, a crown next year, and potentially a root canal or extraction the year after that.

What causes a hole in a tooth?

A hole — clinically called a cavity or carious lesion — is the physical result of tooth decay. The process begins long before the hole appears.

Bacteria in the mouth, primarily Streptococcus mutans, feed on fermentable carbohydrates — sugars and refined starches — and produce acid as a byproduct. This acid demineralises enamel, progressively softening and dissolving tooth structure. Initially the damage is microscopic and reversible with fluoride and good oral hygiene. Once the enamel surface breaks down entirely, a physical cavity forms — and at that point the damage cannot be reversed without intervention.

The most common sites for cavities are the biting surfaces of back teeth, where deep fissures trap bacteria and food; the contact points between teeth, where flossing is the only effective cleaning method; and the exposed root surfaces of teeth with gum recession, which have no enamel protection.

What does a hole in a tooth feel like?

Not all cavities are symptomatic — particularly in their early stages. Many are discovered at routine check-ups through clinical examination and X-rays before the patient has felt anything at all. This is one of the strongest arguments for regular dental visits: catching decay before it becomes painful is always better than waiting for pain to drive the appointment.

When symptoms do occur they typically follow this progression:

  • Sensitivity to sweet foods and cold — early dentine involvement
  • Lingering cold sensitivity — decay approaching the pulp
  • Spontaneous aching or throbbing — pulp inflammation, indicating significant depth
  • Sensitivity to heat, or pain that wakes you at night — irreversible pulpitis, requiring root canal treatment or extraction
  • Swelling, abscess, or a pimple on the gum — infection has spread beyond the tooth

Pain is not a reliable indicator of severity. A tooth can have extensive decay with no symptoms at all until the pulp is involved. Conversely, a relatively small cavity in a sensitive location can be acutely painful. Clinical and radiographic assessment is the only reliable way to determine what is actually happening.

What happens if you leave a hole in a tooth untreated?

Decay does not stabilise without treatment. The bacterial process continues, the cavity deepens, and the structural integrity of the tooth progressively diminishes. The clinical consequences of delay follow a predictable path:

Small cavity in enamel or superficial dentine → simple filling, completed in one appointment, minimal cost, tooth fully preserved.

Moderate cavity in deeper dentine → larger filling or possible onlay, more tooth structure removed, higher cost, some risk of sensitivity post-treatment.

Deep cavity approaching or involving the pulp → root canal treatment or extraction. Root canal treatment preserves the tooth but requires multiple appointments and subsequent crown placement in most cases. Extraction removes the problem but creates a gap that requires management — implant, bridge or denture — to prevent adjacent teeth drifting and opposing teeth over-erupting.

Dental abscess → urgent treatment, possible hospital admission in severe cases, risk of spreading infection to jaw, neck and beyond. Dental infections, while rarely life-threatening in healthy adults, can become serious rapidly in immunocompromised individuals.

The cost — financial, biological and in treatment complexity — escalates at every stage. A filling placed early costs a fraction of what root canal treatment and a crown costs later.

How Tooronga Family Dentistry treats cavities

Small to moderate cavities — tooth-coloured composite fillings We use tooth-coloured composite resin for the vast majority of fillings. Modern composite is strong, aesthetically natural, and requires less removal of healthy tooth structure than the amalgam fillings of previous decades. For patients across Glen Iris, Malvern and Hawthorn who have old silver amalgam fillings they’d like replaced for aesthetic or health reasons, composite replacement is a straightforward option we discuss at consultation.

The procedure is straightforward: local anaesthesia, removal of decayed tissue, conditioning of the tooth surface, placement and shaping of composite resin in layers, curing with a light, and final polishing. Most fillings are completed in a single appointment of 30 to 60 minutes.

Large cavities — onlays and crowns When decay has destroyed a significant portion of tooth structure, a filling alone may not provide adequate strength or longevity. An onlay — a laboratory-fabricated restoration bonded to the remaining tooth structure — or a full crown may be recommended. These restorations are more durable for heavily broken-down teeth and distribute biting forces more effectively than large direct fillings.

Deep cavities near the pulp — protective measures When decay is deep but the pulp has not been directly exposed, we place a protective liner or base beneath the filling to promote pulp recovery and reduce the risk of post-operative sensitivity. In some cases a tooth requires monitoring after a deep filling to confirm the pulp remains healthy before a final restoration is placed.

Root canal treatment Where the pulp is irreversibly inflamed or infected, root canal treatment removes the pulp tissue, disinfects the root canal system, and seals the tooth. Modern root canal treatment at Tooronga Family Dentistry is performed under local anaesthesia and is significantly more comfortable than its reputation suggests. The majority of patients report the procedure as no more uncomfortable than a routine filling.

Emergency care for painful cavities We understand dental pain doesn’t follow business hours. If you are experiencing acute toothache from a cavity — particularly spontaneous pain, throbbing, or pain that prevents sleep — contact us as a priority. We accommodate urgent appointments for patients across Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton.

What you can do right now

If you’ve noticed a hole in a tooth, the single most useful thing you can do is book a dental appointment promptly. In the meantime:

  • Avoid very hot, cold, or sweet foods that trigger pain
  • Keep the area clean — don’t avoid brushing a decayed tooth for fear of pain
  • If the cavity has a sharp edge catching your tongue or cheek, temporary dental cement from a pharmacy can provide short-term protection while you wait for your appointment
  • Take paracetamol or ibuprofen at recommended doses for pain relief — clove oil applied to the cavity can provide additional temporary relief
  • Do not place aspirin directly on the gum or tooth — this causes chemical burns to soft tissue

Prevention — making the next cavity less likely

Once decay has been treated, attention turns to preventing recurrence. At Tooronga Family Dentistry we don’t simply fill and farewell — we review why the cavity developed and address those factors directly.

  • Fluoride treatments applied in-chair strengthen enamel and dramatically reduce cavity risk
  • Fissure sealants on back teeth with deep grooves prevent bacteria and food from becoming trapped in the highest-risk sites
  • Dietary review — identifying the frequency and timing of sugar exposure in your diet
  • Oral hygiene instruction — ensuring brushing technique and interdental cleaning are genuinely effective
  • Regular check-ups and X-rays — catching the next lesion before it becomes a cavity

Found a hole in your tooth or experiencing toothache? Don’t wait. Book an appointment at Tooronga Family Dentistry — we provide prompt, thorough care for patients across Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton.

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Meta Description: Found a hole in your tooth? The longer you wait, the worse it gets. Tooronga Family Dentistry in Glen Iris explains what causes cavities, what happens if left untreated, and how we treat them — serving Malvern, Hawthorn, Hawthorn East and Ashburton.

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Blog 15: Sudden Sharp Pain When Chewing — What Is It and What Should You Do?

Sharp pain when you bite down is one of those symptoms that’s hard to ignore — and shouldn’t be.

A sudden, sharp pain when chewing is your tooth signalling that something is structurally or biologically wrong. Unlike the dull ache of a developing cavity or the generalised sensitivity of enamel erosion, pain specifically triggered by biting or chewing is highly localised and diagnostically meaningful. It narrows the possible causes considerably — and most of them require professional assessment rather than watchful waiting.

Why biting causes pain — the underlying mechanics

When you chew, you apply significant force through your teeth — the average bite force on a molar is between 400 and 800 newtons. In a healthy tooth this force is distributed evenly through intact tooth structure and absorbed by the periodontal ligament — the fibrous tissue suspending the tooth in its socket. Pain occurs when this force encounters a structural defect, an inflamed ligament, or an exposed nerve — concentrating stress in a way that triggers an acute pain response.

The most common causes of sharp pain when chewing

Cracked tooth syndrome The most common and frequently missed cause of sharp biting pain. A crack in a tooth — often invisible on X-ray and sometimes invisible to the naked eye — creates an unstable segment of tooth structure that flexes under biting load. This flexion stimulates the nerve acutely, producing a sharp pain that typically occurs on biting down and releases suddenly when pressure is removed. The pain on release is particularly characteristic of a cracked tooth.

Cracks most commonly affect back teeth and are strongly associated with large old fillings that have weakened surrounding tooth structure, grinding and clenching, and biting hard objects. Ice chewing is a surprisingly common precipitating factor.

The challenge with cracked tooth syndrome is that the crack may not be visible on X-ray, making diagnosis dependent on clinical testing — bite testing with a specialised instrument on individual cusps, transillumination with a bright light to reveal crack lines, and dye staining. An experienced clinician can usually identify the offending tooth and cusp with targeted testing.

Treatment depends on crack depth. A crack confined to enamel and dentine is typically managed with a crown, which holds the tooth together and prevents the crack propagating further. A crack extending into the pulp requires root canal treatment before the crown. A crack extending below the gumline into the root — a vertical root fracture — often cannot be saved and requires extraction.

A failing or fractured filling An old filling — particularly a large amalgam filling — can fracture or develop a crack in the surrounding tooth structure over time. The remaining tooth walls, unsupported and weakened, flex under load and produce sharp pain. Sometimes the fractured cusp is visible; sometimes it requires magnification to identify. Treatment typically involves replacing the filling with a crown or onlay to restore structural integrity.

Decay beneath an existing restoration Secondary decay — decay developing at the margin of an existing filling or crown — undermines the restoration and the tooth structure beneath it. Biting load applied to a compromised tooth produces pain. X-rays are usually diagnostic. Treatment involves removing the failing restoration, excavating the decay, and replacing with a new filling or crown depending on the extent of destruction.

Periodontal abscess or acute gum infection An abscess in the gum tissue or periodontal ligament causes exquisite sensitivity to biting — the inflamed ligament cannot absorb occlusal load normally. Unlike pulp-related pain, periodontal pain tends to be more constant, associated with visible swelling or a pimple on the gum, and often accompanied by a bad taste. The tooth is typically tender to touch on its side as well as to biting. Treatment involves draining the abscess, cleaning the periodontal pocket, and antibiotic therapy where indicated.

Reversible pulpitis Inflammation of the pulp — from deep decay, a recent filling, or trauma — can cause pain on biting before progressing to spontaneous aching. At this stage the inflammation may still be reversible with appropriate treatment. A recently placed filling that produces biting pain may simply require adjustment of the bite — a high filling concentrates occlusal force on the restored tooth and causes disproportionate discomfort.

Irreversible pulpitis and pulp necrosis When pulp inflammation progresses beyond the reversible stage, biting pain is typically accompanied by spontaneous aching, sensitivity to heat that lingers, and eventually the development of an abscess. This requires root canal treatment or extraction — not a wait-and-see approach.

Dentine hypersensitivity at a specific tooth Localised enamel loss or root exposure at a single tooth can produce sharp pain with certain foods or biting pressures. This is typically less severe than crack-related pain and more consistently triggered by specific stimuli — cold, sweet, or acidic — rather than pure biting force.

Loose crown or broken tooth A crown that has lost its cementation moves fractionally under load, producing sharp pain or sensitivity. This is usually identifiable — the crown may feel slightly mobile or different under biting pressure. A loose crown requires re-cementation promptly; leaving it risks decay developing on the exposed tooth preparation underneath.

Diagnosing the cause — why this requires professional assessment

Sharp biting pain cannot be reliably self-diagnosed. Several of the causes above — particularly cracked tooth syndrome — are genuinely difficult to identify even clinically and require systematic testing. Attempting to diagnose by process of elimination at home wastes time and allows potentially serious conditions to progress.

At Tooronga Family Dentistry we use a structured diagnostic protocol for biting pain:

  • Detailed history — when does it occur, which tooth, biting down or releasing, hot or cold sensitivity, spontaneous pain
  • Visual examination with magnification and transillumination
  • Bite testing with a Tooth Slooth — isolating individual cusps to identify the exact site of pain
  • Percussion testing — tapping teeth to assess periodontal ligament involvement
  • Thermal testing — cold and heat to assess pulp status
  • Digital X-rays — assessing for decay, bone loss, abscess, and restoration integrity
  • Probing — assessing gum pocket depths around the affected tooth

This systematic approach almost always identifies the cause — even when the crack or defect is not immediately visible. The diagnostic appointment is the most important step.

Why you should not delay assessment

Sharp biting pain rarely resolves spontaneously. The underlying causes — cracks, decay, failing restorations, pulp inflammation — are progressive. A cracked tooth diagnosed and crowned early is saved. The same tooth left until the crack propagates into the root is extracted. A deep cavity causing biting pain that is treated now may need only a filling. Left until the pulp is involved it needs root canal treatment and a crown.

The window for conservative treatment is open now. It closes progressively with time.

Immediate measures while waiting for your appointment

  • Avoid chewing on the affected side
  • Avoid very hard foods — crusty bread, nuts, raw carrots — that concentrate biting force
  • Avoid temperature extremes if thermal sensitivity is also present
  • Take paracetamol or ibuprofen at recommended doses for pain management
  • Do not attempt to diagnose or treat by biting on something to identify the tooth — this risks propagating a crack further

Experiencing sharp pain when you chew? This is not something to monitor at home. Book an assessment at Tooronga Family Dentistry — we see patients from Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton and have the diagnostic tools and clinical experience to identify the cause accurately and treat it promptly.

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