What are the possible causes of sensitive teeth?

Tooth sensitivity is a brief sensation of sharp pain experienced when the dentinal layer of a tooth is exposed to stimuli; typically thermal in nature.

Dentin is the yellowish layer found beneath the outermost white and hard enamel.

When the protective enamel layer is lost or when gum recedes, stimuli such as hot, cold, sticky or acidic food comes into contact with the inner layers of the tooth and a signal is sent to the nerves inside the tooth. This in turn sends a signal to the brain and pain is felt.

These are some of the conditions that might cause tooth sensitivity (most of them involve the loss of the protective layer and cause exposure of the inner layer).

• Tooth decay (cavities) and worn fillings

• Cracked tooth

• Gum disease and receding gums

• Worn tooth enamel

• Recent dental work

• Post teeth whitening procedure

With so many possible causes of tooth sensitivity, it is best to consult your dental specialist/dentist to identify the root cause so that an appropriate treatment plan can be proposed. Depending on the cause, your dental specialist/dentist may suggest treatments such as:

• Root canal treatment

• Filling or crown

• Gum treatment and gum graft

• Use of desensitising toothpaste

• Use of fluoride gel

Dr Irene Sim is a Dental Specialist in Endodontics with Specialist Dental Group®. She received her specialty training in Endodontics from the National University of Singapore. Dr Sim has a special interest in dental traumatology, revascularisation, apexification, non-vital bleaching & cracked teeth management. (65) 6734 9393 | www.specialistdentalgroup.com