Tooth SensitivityToothacheAbscessImpacted Wisdom ToothMouth UlcersJaw Disorders
Tooth Sensitivity

When I eat food, drink water or suck air through my teeth, I feel a sharp pain on my teeth. This pain lasts for a few minutes or can remain for a while. What could be happening?
A likely cause could be tooth sensitivity.


  • brief, sharp, painful sensations in teeth during brushing, flossing, eating hot, cold, sweet, sour or acidic foods.



  • exposed dentine layer in the crown or root portion of the tooth
  • dental decay
  • fractured or chipped teeth
  • vigorous tooth brushing, causing abrasion to tooth material near the gum line
  • teeth grinding during sleep leading to fractures of tooth portions near the gum line (abfraction cavities)
  • new fillings or crown and bridgework. Some sensitivity can be expected during the initial periods


Factors that increase your risks:

  • receding gum due to gum disease
  • vigorous tooth brushing
  • excessive chewing of hard foods
  • teeth grinding during sleep (nocturnal bruxism)



  • bulimia
  • dry mouth, frequently resulting from radiotherapy to head and neck


Professional treatment options:

  • application of chemical agents to affected areas
  • restoring worn areas with filling materials
  • crowning severely worn teeth

I had a sudden toothache on one tooth. The gums are slightly swollen. I feel the tenderness when I touch it. After a few days it subsided and I ignored it. A few days later, I had the same toothache. What can I do about this?

Sudden excruciating pain or toothache may indicate the deep spread of decay in the tooth. Often, root canal treatment is necessary. If you note mild symptoms on the teeth, a check-up with your dentist will help prevent a bigger problem from occurring.


  • may start with sensitivity to hot or cold drinks and food
  • sudden pain from tooth or jaw usually of moderate to severe intensity
  • pain may last a few days or longer
  • pain can be related to one tooth or over a wide area
  • painkillers may provide temporary relief
  • swelling could occur



  • decayed teeth
  • history of trauma to teeth
  • cracked teeth from excessive wear, chewing on hard foods


Management depending on cause:

  • remove decayed area and protect tooth with filling
  • root canal treatment if decay is extensive and has affected nerve of the tooth
  • drainage of swelling
  • antibiotics for swelling
  • extract tooth if not restorable

I have had pain and gum swelling near my tooth for the past few months. It lasts for a few days and then disappears. Why is this so?

What you have is gum abscess, commonly referred to as  ‘gum boil’. Most gum diseases are without symptoms. However, two conditions feature pain predominantly:

1) Acute Periodontial Abscess


  • localised gum swelling, red and tender to touch
  • sudden onset
  • increased mobility of tooth
  • tooth can be tender on biting
  • soreness at site leading to throbbing pain
  • pus discharged from the gums
  • loss of supporting bone (detectable from X-ray)


2) Acute Necrotising Gingivitis


  • ulcers on tips of gum between teeth and along gum line
  • bleeding gums
  • sudden onset and pain
  • foul odour
  • increased salivation
  • metallic taste
  • repeated infections lead to bone loss or periodontitis, with additional features:
    • enlarged gum margins
    • triangular gaps between teeth
    • gum recession (teeth appear longer)



  • bacterial infection


Factors that increase your risk:

  • poor oral hygiene
  • smoking
  • systemic diseases e.g. diabetes
  • stress



  • proper tooth brushing and mouth rinse
  • professional cleaning of gum areas
  • antibiotics
  • oxidising antiseptics
  • gum surgery
Impacted Wisdom Tooth

My last tooth in my lower jaw is causing some discomfort. I can only see part of the tooth and food gets trapped in the overlying gum. Occasionally, the overlying gum swells a little and the side of my neck appears swollen too. Do I need to remove this tooth?

Wisdom teeth appear during early adulthood and in some, the jaw size does not allow its proper eruption. This leads to impaction against the tooth in front of it. Surgical removal of wisdom teeth is a common procedure.

Infections due to impacted wisdom teeth


  • pain on lower jaw, usually around last molar teeth
  • pain can be acute and mouth opening may be limited
  • possible swelling
  • lymph nodes in the neck may swell
  • touching the region around the molar can be painful



  • impaction of wisdom tooth causing food to be trapped
  • infection of overlying gum
  • triangular gaps between teeth
  • decay of wisdom tooth and adjacent tooth



  • cleansing of the gum area with gargle or mouthwash
  • antibiotic may be required for serious infection
  • extraction or trimming of the opposing tooth to reduce biting on the swollen gums
  • surgical removal of the upper wisdom tooth
Mouth Ulcers

I suffer from recurrent mouth ulcers. This affects my eating and even tooth brushing. The discomfort lasts about a week. Is there any way I can hasten the healing? Does gargling with salt solution help?

Ulcers in the mouth can take some time to heal due to constant abrasion with the ulcer site. Application of a gel or paste prescribed by your dentist may help to protect the site from further abrasion. Gargling with mouth rinse or salt solutions will help reduce contamination of the ulcer site.

Apthous ulcers


  • single or recurring painful ulcers in the mouth
  • ulcers can range from 2 mm – 10 mm
  • eating is interrupted for a few days
  • persists for 7-14 days



  • localised injuries from self-inflicted bites, tooth brushing, etc.
  • stress



Apthous ulcers usually heal without treatment. However, some may take a longer time to heal and may prevent you from performing basic oral hygiene procedures. Your dentist could help by prescribing steroid ointment or other topical medication.

Jaw Disorders

Jaw or temporomandibular joint disorders

In the past, my jaw has clicked and appears lopsided when I open my mouth. Recently, I noticed my jaw was rather stiff in the mornings and my muscles tend to ache when I chew my food. I fear my jaw may lock on me. Sometimes, I also suffer from headaches. Is this a serious condition?

Not all clicking sounds need to be treated. However, a worsening click, difficulty in opening the mouth and muscle pain may warrant a visit to the dentist.


  • jaw pain (muscles and joint) on movement or after waking up
  • clicking jaw joints
  • difficulty in opening mouth
  • jaw  ‘stuck’ or locked and dislocated
  • headaches



  • subconscious night grinding or clenching of teeth. Most patients who do so are usually unaware.
  • emotional stress and anxiety
  • extraction or trimming of the opposing tooth to reduce biting on the swollen gum
  • bad jaw habits e.g. chewing on hard foods, chewing on one side
  • poor teeth alignment leading to a bad bite
  • systemic diseases e.g. arthritic disorders



  • palpable pain on jaw muscles, joint and head
  • limitation in mouth opening
  • excessively worn, cracked teeth, fillings and prostheses
  • X-ray may show bone changes. Magnetic Resonance Imaging may show position of displaced disc
  • questionnaires on medical and chronic pain history



  • patient education and reduction of jaw use
  • splints fitted over teeth to reduce further damage
  • medication
  • counselling sessions
  • heat and ultrasound physiotherapy
  • arthrocentesis – jaw joint manipulation
  • arthroscopy – jaw joint surgery aided by miniature camera
  • occlusal rehabilitation to stabilise jaw function