Please tell me how long it takes for sensitivity toothpaste to work?

Sensitive toothpaste: Sensitive toothpastes act by creating a plug or barrier at the root surface to changes in fluid flow into and out of the tooth. It takes about 3 weeks for this to buildup an effective barrier. It all depends on exposed root surface and why you are having sensitivity. I recommend an examination to see if toothpaste can help or is there a more serious problem.

About 2 weeks: It takes about 2 weeks to notice the benefit of most sensitivity toothpastes. If your sensitivity is undiminished after this time frame you should contact your dentist.

Caused by ?: It's mostly dependent upon the cause of the sensitivity-new filling, bruxism, erosions, abfractions, decay, leaking margins on fillings and the list goes on and on. It also varies upon the particular toothpaste, the individual & the amount of teeth involved. There is no good answer to your question-a week, a month, never, somewhat. Your own dentist can answer this best based upon your situation.

A few weeks.: Usually 2 to 4 weeks. If you have zero relief at that point, i'd recommend a visit to the dentist to see if it's a problem that toothpaste won't fix.

4-6 weeks: Usually they take anywhere from 4-6 weeks for the sensitivity to be greatly reduced. You can also help speed this is up by using a Fluoride rinse just before bed to help reduce sensitivity.

Sensitivity: I instruct my patients to burnish the sensitivity toothpaste into the sensitive area with their finger or a q-tip for about 15 seconds before bed making it the last thing they do as well as to continue daily use as a dentifrice and this seems, from patient feedback to work more quickly in most. I also use a Fluoride varnish chairside to help jump start the process.