The reason why holding water in the mouth stops a toothache is because holding water in the mouth alters the pressure and the temperature inside your tooth.
If tooth decay reaches your tooth's living pulp, the bacteria can produce trapped gases.
Your body heat expands the gases and pushes on sensitive nerves, and the cold water that you hold in your mouth causes the gases to contract and constrict blood flow and temporarily stops the pain signals, which stops the toothache pain.
Warm water and warm saltwater also acts as a natural disinfectant and draws out any irritating fluids from swollen gums and it also helps to flush out debris that is stuck in cavities, which relieves pressure and toothaches.
The best instant pain relief for a toothache is to apply some clove oil to the affected tooth or some Red Cross Toothache medication.
The clove oil and Red Cross toothache medication instantly relieves the teeth pain and it's good to keep some clove oil or Red Cross toothache medication on hand.
If you don't have any clove oil or Red Cross toothache medication you can also suck on some ice or use a warm salt water rinse to get rid of the toothache.
The best home remedy for toothache is to use a salt water rinse or cold compress or even some clove oil if you have some.
To use a salt water rinse to help stop a toothache, mix 1/2 teaspoon of salt into a glass of warm water.
Then swish the saltwater solution around in your mouth for 30 seconds to cleanse the area, loosen any debris and reduce swelling.
You should repeat the saltwater rinse 3 times a day or do it whenever you feel a toothache coming on again.
To use a cold compress for easing and stopping a toothache, wrap and ice pack in a towel and apply the ice pack to the outside of your cheek for 15 minutes 20 minutes.
The ice pack helps to constrict blood vessels and effectively numbs the throbbing toothache pain.
To use clove oil to stop a toothache, dab a small amount of clove oil or a crushed whole clove onto a cotton ball and then press it against your sore tooth.
The Cloves contain eugenol, which is a natural anesthetic and anti-inflammatory.
A good quick toothache medication that you can buy in stores is also called Red Cross toothache medication that comes in a small bottle and you dab a small cotton ball into the solution and apply it with tweezers to your tooth that is hurting.
Just be careful as it can burn your lips if you get it on your lips, but it works wonderfully.
If you do get the Red Cross toothache medication on your lips and it burns, you can wash it off and it will stop burning within a few minutes or so.
Taking anti inflammatory medications like Ibuprofen, Avid, Motrin etc is also highly effective for reducing tooth pain and swelling.
Acetaminophen like Tylenol can also help relieve tooth pain, if you cannot take ibuprofen.
Even sucking on an ice cube gently and placing an ice cube on the painful tooth can also help to reduce swelling and relieve tooth pain.