These small spaces between teeth and gums collect debris and can become infected, which starts to break down the bone and connective tissue that hold teeth in place. via WebMD
How To Heal Your Teeth Naturally
Although it’s always a good idea to go to the dentist a few times a year, there are a few natural things you can do to to keep your teeth healthy between appointments.
1. Baking Soda

According to the Journal Of Clinical Dentistry, toothpaste containing baking soda are relatively more effective in enhancing plaque removal from harder-to-reach areas of the dentition (1).
You can use baking soda on your teeth by mixing a bit of the powder with water to create a paste and rub along your gum-line. You can also use it to make your own natural toothpaste.
2. Aloe Vera

A study conducted by Journal Of Indian Society Of Periodontology concluded that subgingival administration of Aloe vera gel results in improvement of periodontal condition (2).
This gel also reduced pocket depth in gums, which can be attributed to anti-inflammatory, antibacterial and wound-healing properties aloe vera.
The plant is known to provide relief in swelling, pain, bleeding gums and antifungal for thrush, an oral infection caused by yeast. Just apply organic, food-grade aloe vera to your gums a few times a week.
3.Tea Tree Oil

Tea tree oil is one of nature’s most effective antiseptics. It’s been known to work wonderfully against thrush and other oral infections (3).
Just rub a few drops of tea tree oil on your gums to help alleviate symptoms of gum disease, specifically gum inflammation (4).
You can also purchase all-natural toothpastes made with tea tree oil from your local health food store.
4. Clove Oil

Clove oil is applied directly to the gums (used topically) for toothache, for pain control during dental work. It is also applied to the skin as a counter irritant for pain and for mouth and throat inflammation. via MedlinePlus
You can use clove oil directly on the gum to relieve pain but frequent and repeated application of clove oil in the mouth or on the gums can sometimes cause damage to the gums, tooth pulp, skin, and mucous membranes.
To be on the safe side, use an all-natural clove oil toothpaste every 2-3 days.
5. Turmeric