Cold, hot, sweet and sour foods can trigger some sharp, sudden pain that gets to your teeth nerve endings. This causes discomfort called tooth sensitivity. It can be due to tooth decay, worn fillings, exposed roots of gum disease.
Home remedies for tooth sensitivity
Oil pulling with coconut oil
Coconut oil is an antibacterial agent, and it helps to reduce the plaque present on the teeth. Oil improves overall oral health and prevents problems such as bad breath, toothaches as well as gum disease. Swishing coconut oil spitting and rinsing your mouth with warm water helps tooth sensitivity.
Salt Water
Salt water helps to relieve tooth sensitivity by balancing pH levels in your mouth. This way it creates an alkaline environment where harmful bacteria cannot survive. Mix salt with a cup of warm water and using the solution to wash our mouth. You then rinse with clean water at least twice a day.
Cloves and Clove Oil
Cloves improve oral health due to their antibacterial, anesthetic and anti-inflammatory properties which help to fight oral infections and reduce tooth pain. They are also used to reduce tooth sensitivity.
Grind cloves and mix with olive oil then apply on the affected teeth and allow it to rest for about 30 minutes. Rinse the mouth with warm water.
Guava Leaves
When you are suffering from sharp pain because of tooth sensitivity, try using guava leaves. Guava leaves contain flavonoids, such as quercetin, kaempferol, rutin with anti-inflammatory, analgesic properties, and free-radical activity. Thus, it helps relieve tooth sensitivity and toothache. Chew tender, fresh guava leaves for a few minutes and then spit it.
Garlic
Garlic helps combat tooth sensitivity. It is high in allicin making it a powerful antibacterial agent and an anaesthetic. It reduces pain resulting from tooth sensitivity and abscess infection. Besides, it kills the germs that cause oral infections and cavities. Mixing crushed garlic cloves, with water and some salt. Apply it directly on the affected tooth.Let it sit for several minutes before rinsing it off with warm salt water.
Raw Onion
Onion contains quercetin flavonoids, which possess anti-inflammatory properties. This helps provide relief from pain caused by 
tooth sensitivity. The antimicrobial properties of onion help kill the harmful bacteria in the mouth that cause oral infections. Cut onions into small sizes that will fit comfortably in your mouth. Put the cut slice on the affected teeth and allow for 10 minutes. Rinse your mouth with salt water to prevent onion breath. Repeat a few times daily for a few days.
Before you seek medical advice, try these simple home remedies to help relieve tooth sensitivity.