Scientists are working on to create regenerative dental fillings, which may allow teeth to partially heal themselves. The new tooth filling is made of synthetic biomaterials. It stimulates stem cells in the tooth to grow new dentin, which is the bony material which makes up the inside layer of your teeth, right under the enamel.
This would allow patients to regrow damaged teeth and to partially fill the cavities naturally, and possibly eliminating the need for root canal procedure.
Researchers hope to further develop this technology, and make it available for dental patients as an alternative to traditional fillings