What causes dental sensitivity?

Question

Need it for a project. Any ideas? Thank you!

Answer 1

Sensitivity formula toothpastes contain potassium nitrate. Here's a photo that is MONSTROUSLY enlarged showing dentinal tubules. The potassium nitrate precipitates into the openings and eventually plugs these holes up. http://oralhealth.dent.umich.edu/VODI/html/01-dc/a-anatomy/toothStructure/03.html

Here's another picture that explains why that works. If you ignore the enamel layer, which is not present on the roots, you will see that the dentinal tubules go all the way from the pulp chamber (where the nerve lives) to the outside world. There is fluid in the tubules. Some nerve fibers actually enter the tubules. Anything that moves or disturbs the fluid might be transmitted to the nerve fibers. This is usually interpreted as pain. Blocking up the tubules will reduce the possibility of this from happening.

http://www.adha.org/CE_courses/course9/figures/figure2.htm

When someone comes to me and complains of new sensitivity, the first thing I ask is what kind of toothpaste they are using. 9 times out of 10, they say that they recently started to use a whitening toothpaste. They are well-known for that. Just stop using it and go back to your "bland" normal toothpaste. If you are still sensitive after a week or so, get Crest Sensitivity formula toothpaste and use that and nothing else for at least 3 or 4 weeks. If you area STILL sensitive, go ask your dentist about getting some fluoride for home use.

Crest and Colgate both make sensitivity toothpastes that taste better than Sensodyne. If you use a sensitivity formula toothpaste, do not use ANY other kind of toothpaste for at least 3 or 4 weeks. It has a cumulative effect and switching toothpastes back and forth will be like taking two steps forward and one step backward.

Answer 2

there are sevral reasons why teeth become sensitive. if you have healthy teeth and you feel sensitivity when drinking cold or warm water etc then probaly answer is some problems with your nervs. it maybe because of a hidden hole (decay) when branches of pulp comes to close to a surface of the decay and nerv comes in direct contact with cold water or hot water or somthing solty or sweety. if you ever had teeth whitning then sensitivity maybe as a result of that . because if once did whitning then your need repeat this procedure to fill micro holes an enamelum surface with neorganic elements. thats what i can say on English my English is too bad to give a comlete answer

Answer 3

ask the pharmacist in your nearest chemist as they sell several things for that

Answer 4

Gum recession !!