Condition Guide · When Teeth Feel Sensitive
When Teeth Feel Sensitive
Tooth sensitivity (dentin hypersensitivity) refers to a short, sharp twinge or pain in a tooth triggered by stimuli such as cold water, hot food, sweets, or cold air. Because the causes are varied — dental caries, gum recession (root exposure), tooth wear, and cracks — accurate differentiation is known to be important.
Treatment options for this condition
About this condition
Three causes are known to be common in tooth sensitivity (and they can overlap with one another). ① Dental caries — a particular tooth becomes sensitive to sweet and cold stimuli, and as decay progresses this can develop into pain. ② Gum recession (root exposure) — when the gum recedes and the root of the tooth is exposed, cold stimuli cause sensitivity; periodontal disease and incorrect brushing are reported to be common causes. ③ Dentin hypersensitivity — when enamel wears away and the underlying dentin is exposed, stimuli are known to be transmitted to the nerve, producing a short, sharp twinge.
At Dr. Beauty Dental Hospital in Uijeongbu, 3D CT and an intraoral camera (QLF) are used to differentiate the cause of sensitivity, after which treatment is matched to that cause — restorative treatment for decay, periodontal therapy for root exposure and gum problems, and dentin protection (desensitization) for hypersensitivity. If inflammation has progressed to the nerve, root canal treatment may be required.
The hospital is about a 10-minute walk from Exit 2 of Hoeryong Station in Uijeongbu, with evening hours until 8 PM on Mondays and Thursdays and clinic sessions on Saturdays and Sundays as well. For enquiries, call +82 31 855 7528.
Check yourself
Check if this applies to you.
Sensitivity to cold water or sweet foods may be simple tenderness, or it may be a sign of decay or gum disease. Dr. Beauty Dental Hospital begins by identifying the cause, then guides you to the appropriate approach among cavity treatment, periodontal therapy, and desensitization for hypersensitivity.
Causes
Why this condition occurs.
- 01
Decay exposing the inner layer of the tooth (dentin)
- 02
Gum recession leaving the tooth root exposed (root exposure)
- 03
Enamel worn away by excessive or forceful brushing
- 04
Tooth wear or cracking caused by bruxism and clenching
- 05
Temporary sensitivity following whitening or scaling
Want to know exactly where you stand?
Start with a CT and intraoral scanner diagnosis.
Treatment options
Treatment options for your condition.
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Treatment
Cavity Treatment
Sensitivity caused by decay is restored with composite resin, inlay, or crown according to the extent of the decay.
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Treatment
Periodontal Therapy
When gum recession or an exposed root is the cause, the condition is managed with scaling and periodontal treatment.
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Treatment
Root Canal Treatment
When sensitivity is severe and inflammation has reached the nerve, root canal treatment is followed by a crown for protection.
FAQ
Frequently Asked Questions.
- Q. My teeth are sensitive to cold water — is it decay, or just sensitive teeth?
Sensitivity to cold water alone makes it difficult to tell decay apart from simple dentin hypersensitivity. If a particular tooth becomes progressively more sensitive to sweet and cold stimuli and pain develops, decay is a possibility; if several teeth twinge briefly right after a stimulus and then settle, dentin hypersensitivity is known to be a likely explanation.
At Dr. Beauty Dental Hospital in Uijeongbu, 3D CT and an intraoral camera are used to differentiate the cause before a treatment method is recommended.
Because the cause is difficult to determine by self-assessment alone, an examination is advised if sensitivity persists for more than two weeks. Enquiries: +82 31 855 7528.
- Q. Can sensitivity caused by receding gums also be treated?
Sensitivity that arises when the gum recedes and the tooth root becomes exposed (root exposure) can also be managed and treated. Periodontal disease and forceful brushing are reported to be common causes, and leaving the cause unaddressed can allow sensitivity and gum recession to progress.
At Dr. Beauty Dental Hospital in Uijeongbu, gum condition is examined first; inflammation is then managed with scaling and periodontal therapy, while the exposed root surface is treated with dentin protection (desensitization) or restoration to reduce sensitivity.
Guidance on using a soft-bristle toothbrush and correct brushing technique is provided alongside treatment.
- Q. How can I manage sensitivity at home?
The following habits are known to help ease sensitivity: ① Brushing gently with a soft-bristle toothbrush rather than scrubbing hard from side to side. ② Using a toothpaste formulated for sensitive teeth. ③ Cutting back on very cold or strongly acidic foods and drinks. ④ Asking about a nighttime appliance if you grind your teeth.
However, if sensitivity persists for more than two weeks despite home care, or becomes progressively worse, decay or a gum problem may be involved and an examination is advised.
Consultations are available by calling +82 31 855 7528.
- Q. My teeth feel sensitive after whitening or scaling. Is that all right?
Temporary sensitivity immediately after whitening or scaling is comparatively common and is known to subside within a few days in most cases. It is reported to occur because the tooth surface becomes briefly more reactive following the procedure.
If the sensitivity lasts a long time, however, or is accompanied by pain in a specific tooth, another cause such as decay or a crack may be present, and a check-up is advised.
At Dr. Beauty Dental Hospital, guidance on managing post-procedure sensitivity is provided, and if symptoms persist the underlying cause is investigated.
- Q. Why do teeth become sensitive? I would like to understand the mechanism.
Tooth sensitivity is known to occur when the hard outer surface of the tooth (enamel), or the portion previously covered by gum tissue, becomes thinner or exposed, so that cold and sweet stimuli travel through the microscopic tubules within the underlying dentin and reach the nerve.
Enamel dissolved by decay, a root surface exposed by receding gums, and surface wear from forceful brushing or acidic foods are reported to be the representative pathways.
Because these pathways differ from one another, the treatment differs as well — which is why identifying the pathway involved is the first step of treatment.
- Q. What happens if I simply put up with the sensitivity?
If the cause of sensitivity is left unconfirmed, decay may progress to the nerve and make root canal treatment necessary, while root exposure is known to lead to gradually worsening gum recession and sensitivity.
If, on the other hand, it is simple dentin hypersensitivity, improvement often follows from care alone — correcting brushing technique and using a toothpaste for sensitive teeth — so confirming the cause comes first.
If symptoms persist for more than two weeks or steadily worsen, an examination to differentiate the cause is advised.
Next step
When Teeth Feel Sensitive, start with a diagnosis.
Online consultations are accepted 24/7, with responses within one business day. If you'd like to learn how treatment works, visit our treatment guide page.