Decrease in Sensitivity After Being Exposed to the Same Thing Over and Over Again
Molar sensitivity: Causes and remedies
For people with molar sensitivity, eating or drinking certain substances or those at certain temperatures causes discomfort or pain in their teeth. At least twoscore million adults suffer from sensitive teeth in the Us, according to the University of General Dentistry.
The pain is often sharp and sudden, only it is temporary. Tooth pain occurs when stimuli, such equally hot and common cold, reach a tooth'due south exposed nervus endings, according to the Cleveland Clinic. Fortunately, sensitive teeth tin be treated, and the condition tin can improve.
Causes of tooth sensitivity
At that place are no at-take chances groups for tooth sensitivity. It tin happen to anyone, according to Dr. Margaret Culotta-Norton, a dentist in Washington, D.C. and former president of the D.C. Dental Club.
"The nigh common symptom … is a sudden, sharp flash of pain when teeth are exposed to air, cold, sugariness, acidic or hot foods," Culotta-Norton told Alive Scientific discipline. Some people may besides experience tooth sensitivity from brushing or flossing their teeth.
Tooth sensitivity generally results from a layer of the tooth called dentin being exposed. The outside of each molar is normally covered past a hard outer layer, chosen enamel or cementum, which protects that dentin — the softer, inner layer of the molar. Enamel protects the crown, the part of the molar that'due south visible above the mucilage. Cementum covers the dentin surrounding the root, the pointy part of the tooth that extends into the jaw bone, according to the American Dental Association. The glue also protects the root. If the enamel or cementum gets worn down or if the gum line has receded, then the dentin becomes exposed. "Cavities, croaky teeth, glue recession, enamel and root erosion all cause dentin to be exposed," Culotta-Norton said. "Dentin is connected to the nervus that triggers pain in sensitive teeth."
Dentin contains thousands of microscopic tubules, or channels, leading to the tooth'south pulp, co-ordinate to the Academy of General Dentistry. When exposed, these dentinal tubules let rut, cold or acidic substances to reach the nerves inside the tooth, causing hurting, according to the Cleveland Clinic. Pain is the only type of response that the nerves inside teeth have, Alive Science previously reported.
According to the Cleveland Clinic, some factors that contribute to sensitive teeth may include:
- Brushing besides hard or using a hard-bristled toothbrush. This can wear downward enamel, causing dentin to become exposed, or encourage gum recession.
- Gum recession. This often happens in people suffering from glue affliction, including gingivitis. Gum recession exposes the dentin.
- Cracked teeth. Cracks can go filled with bacteria from plaque and cause inflammation in the lurid of the tooth. In more astringent cases, information technology may pb to abscess and infection.
- Teeth grinding or clenching. This tin can wear down enamel.
- Plaque buildup.
- Long-term utilise of mouthwash. Some over-the-counter mouthwashes contain acids. If dentin is exposed, the acids can worsen existing tooth sensitivity and farther harm the dentin layer. At that place are neutral fluoride mouthwashes bachelor that might exist a improve selection.
- Acidic foods. These can encourage enamel reduction.
- Dental procedures. Teeth may be sensitive after professional person cleaning, root planing, crown replacement and other procedures. Usually the pain will disappear in four to vi weeks.
Tooth sensitivity after a filing
Some people may feel molar sensitivity afterward having a cavity filled, according to the Cleveland Clinic. Fortunately, tooth sensitivity following a filling should improve on its ain within a few weeks.
Sometimes teeth become sensitive when bitter down after a filling. This can happen because the filling is too high and prevents your lesser and summit teeth from fitting together properly. In this case, the dentist may need to reshape the filling. If you get a metallic filling and it touches another type of metallic, such as a gold or silverish crown, when y'all bite down, the contact betwixt the ii dissimilar metals may crusade some pain initially, but it should subside.
If you accept toothache-like hurting after a filling and it doesn't get away, the interior of the tooth, called the pulp, may be severely inflamed. This inflammation is called pulpitis, co-ordinate to the Merck Manual. If the inflammation is so astringent that the pulp becomes necrotic, or starts to die, it may require a root canal, in which the damaged tissue is replaced with a filling of a condom-like substance called gutta-percha or another cloth, co-ordinate to the Academy of General Dentistry.
Tooth sensitivity after whitening treatments
Teeth-whitening treatments — done either in a dentist's office or using an over-the-counter product — contain harsh chemicals (hydrogen peroxide or carbamide peroxide) that remove stains, only they tin can also cause tooth sensitivity. When peroxide penetrates the enamel, it tin can temporarily irritate the tooth. Overuse of whiteners tin can besides damage the enamel and gums, co-ordinate to the American Dental Association.
Several studies accept investigated means to lessen hurting after dentist-performed teeth-whitening treatments. A 2018 study in the journal Operative Dentistry found that patients taking acetaminophen/codeine before treatment did non reduce hurting. A 2016 report in the journal Lasers in Medical Science institute that irradiating teeth with low-level lasers afterward a whitening treatment reduced pain levels significantly compared with patients who did non receive whatever laser treatment. And a 2018 study published in The Journal of the American Dental Association plant that applying a desensitizing gel before whitening significantly reduced tooth sensitivity after treatment.
Another potential solution is changing the formula of whitening products. A 2017 report published in the journal Clinical Oral Investigations found that reducing the acidity in bleaching gels resulted in significantly less pain with the same whitening results.
Tooth sensitivity treatment
"Sensitive teeth never completely disappear," Culotta-Norton said. "Symptoms may be less or fifty-fifty seem to go away for a while, but unless the reasons why a person's teeth become sensitive are completely eliminated the sensitivity will come and go."
There are several types of treatment available, and each dentist has his or her favorites that they are most likely to recommend, according to Culotta-Norton. She stressed that in that location is no single handling choice that works for everyone. "Proper diagnosis of the reason for the sensitivity is essential in treating sensitivity. If the reason for the sensitivity is addressed, the treatment chosen volition exist more successful in decreasing pain. If the dentist but treats sensitivity without addressing the reason for it the trouble volition continue and become worse," she said.
The post-obit are some at-home treatments suggested by the Cleveland Dispensary:
- Desensitizing toothpaste. At that place are several brands of toothpaste for sensitive teeth that are available. Your dentist may recommend one, or you may take to try different brands until you find the product that works for you lot. Be sure to use fluoridated toothpaste for sensitive teeth, not tartar-command toothpaste. Try spreading a thin layer of desensitizing toothpaste on the exposed tooth roots before bed.
- Use a soft-bristled toothbrush.
- Avoid highly acidic foods.
- Use a fluoridated mouthwash daily.
- Avoid teeth grinding. Consider getting a mouth guard.
The following are some dental procedures that may reduce molar sensitivity, co-ordinate to the American Dental Association:
- Bonding, crowns or inlays. These may fix a tooth flaw or decay that is causing sensitivity.
- Fluoride gel.
- Surgical gum graft. This will protect the root and reduce sensitivity if the glue tissue has eroded from the root.
- Root canal. This is a concluding-resort treatment for severe tooth sensitivity that has not been helped by other methods.
Fluoride treatment for sensitive teeth
A review article published in 2015 in the journal Caries Enquiry suggests that fluoride alone can't prevent tooth erosion, which tin can lead to tooth sensitivity. The authors suggest that treatments combining fluoride with polyvalent metal ions and some polymers may offer more protection. The authors said that more than studies were needed to decide the efficacy of these additives.
In 2014, the FDA approved the apply of silver diamine fluoride (SDF) to treat molar sensitivity, according to the Association of State and Territorial Dental Directors (ASTDD), a national oral wellness nonprofit. The topical handling has long been pop in Asia and Europe and used to forestall hurting and caries. A short-term 2011 clinical trial in Republic of peru published in the Journal of Dental Research plant that participants with tooth sensitivity who underwent topical SDF applications experienced significantly reduced levels of pain. The application of SDF results in a harder molar surface, helping to forbid farther decay. It also protects exposed dentin from potentially painful stimuli past partially blocking the dentinal tubules, according to a Academy of California San Francisco protocol for using SDF to care for cavities, published in the Journal of the California Dental Association.
Silver diamine fluoride treatments must exist applied by a dental practitioner, according to the ASTDD. When applied over spots of demineralized (damaged) enamel or dentin, silver diamine fluoride results in a permanent black spot on the molar. It does not stain healthy teeth, nevertheless. Argent diamine fluoride treatments arose out of the Japanese exercise of tooth blackening, called ohaguro, in the 19th century, according to the journal Oral Scientific discipline. People with argent allergies should not use this treatment.
This article was updated on May 18, 2021 by Live Scientific discipline contributor Ashley P. Taylor.
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