Toothache

Hong Kong dentist's WhatsApp answers to toothache questions

Toothache – Common Causes

Toothache is a painful sensation caused by a problem with the tooth or surrounding tissues, which can range from mild discomfort to severe pain. Toothache is a common health issue that many people experience, regardless of age. Understanding the causes, symptoms, diagnosis, and treatment options for toothache is important to ensure timely and appropriate medical care.

牙痛 Dr Eric Chan
  • Tooth decay – When the enamel on the surface of teeth is eroded by bacteria, forming cavities, it can cause pain and sensitivity.
  • Gingivitis Gingivitis caused by plaque buildup can lead to swollen, bleeding, and painful gums.
  • Periodontal disease – Long-term wear of removable dentures but experiencing discomfort, loosening, or difficulty eating.
  • Tooth wear Tooth grinding or overuse can cause wear and tear on the tooth surface, leading to sensitivity and pain.
  • Pulpitis – When the dental pulp inside a tooth becomes infected or inflamed, it can cause severe pain and usually requires root canal treatment.
  • wisdom teeth eruption– When wisdom teeth erupt, they may cause pain due to insufficient space or gum inflammation.

Symptoms of tooth decay and toothache

Common symptoms of tooth decay and toothache in Hong Kong in 2025

Toothache caused by cavities is a very common oral problem, and its causes are mainly related to bacteria, dietary habits, and oral hygiene.

Teeth sensitive to hot, cold or sweet foods

When the enamel is damaged and the dentin is exposed, the teeth will feel a tingling sensation when exposed to temperature or sweetness.

Persistent or intermittent toothache

If the cavities worsen, especially during chewing or at night, it may indicate that the cavities have penetrated deep into the dental pulp.

Teeth discoloration

White, brown, or black spots may appear in areas with cavities.

Visible wormholes or dents

Using a mirror to examine the surface of the teeth may reveal obvious cavities.

bad breath

Food debris and bacteria can easily accumulate in cavities, leading to bad breath.

Swollen or inflamed gums

If the infection spreads to the tooth root, it may cause red and swollen gums or even an abscess.

Comparison of treatment methods for tooth decay

This article compares five common dental treatments for tooth decay, explaining the applicability, advantages, and disadvantages of each option.

TreatmentApplicable situationsAdvantages/DisadvantagesCost range
fillingMild to moderate tooth decay, not yet reaching the pulp.Preserves the original tooth, quick completion, and lower cost. Recurrence is possible if cavities are not completely removed.HKD$900+
DuyagenSevere tooth decay, pulpitis, pulp necrosisThe treatment involves removing the infection, preserving the natural teeth, and restoring function. However, it is time-consuming, leaves the teeth fragile, and may require braces.HKD$9,000 – 23,000
extract a toothTooth structure cannot be repaired, infection spreadsComplete removal of the diseased tooth and quick pain relief may affect occlusion and aesthetics.HKD$900 – 2,500

Common toothache problems

Here are some common questions and answers about tooth decay to help you better understand this common but not negligent oral health problem.

Does a mild toothache always require a visit to the dentist?

Yes, even mild toothache should be taken seriously, and seeking medical attention early can help prevent the toothache from worsening.

How often should you have a dental checkup?

Regular dental checkups at a dental clinic specializing in toothaches are an important step in maintaining oral health. We recommend at least twice a year to ensure any toothache issues are detected early and any potential problems are addressed promptly.

What are some ways to relieve toothache at home?

Some simple self-relief methods for toothache are recommended, including applying ice packs, rinsing with salt water, and choosing appropriate soft foods, which can help relieve the discomfort of toothache.

How to prevent toothache?

The most effective way to prevent toothache is to establish good oral hygiene habits. Brushing your teeth twice a day with fluoride toothpaste and flossing helps remove plaque and food debris. Regular dental cleanings and checkups every six months can detect cavities and periodontal disease early. Dietary recommendations include reducing sugar intake and eating more fruits and vegetables to promote saliva production. Quitting smoking and limiting alcohol consumption can reduce the risk of periodontal disease and oral cancer. Keeping your mouth moist and drinking plenty of water reduces bacterial growth, while sufficient sleep and stress management help boost immunity and prevent gingivitis. Finally, avoid biting hard objects such as ice cubes or nuts to prevent tooth breakage or damage.

Why is my toothache so severe in the middle of the night?

When lying down, blood concentrates in the head, increasing pressure on inflamed areas. Combined with reduced saliva production at night, bacteria can easily multiply, amplifying the pain.

Schedule a dental appointment

You can book your dental appointment and check-up at Qi Ren Dental Centre online in advance. For any dental questions, you can also WhatsApp us first, and a dentist will answer them personally.

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