Vitamin K is primarily known for its role in blood clotting, but emerging scientific evidence supports its importance in oral and gum health. Vitamin K acts as a cofactor for the synthesis of proteins involved in blood clotting, which is vital for gum tissue repair and healing, particularly after injuries or dental procedures. Moreover, vitamin K2 is involved in the regulation of calcium metabolism, directing calcium to bones and teeth and preventing its deposition in soft tissues, including the gums and arteries.

Some studies have indicated that vitamin K deficiency can result in prolonged bleeding and poor wound healing in oral tissues. Additionally, research suggests that adequate vitamin K intake may help reduce the risk of gingival bleeding and support overall periodontal health by assisting in the maintenance of bone density in the jaw. While the evidence is not as robust as for other vitamins like vitamin C (which is essential for collagen synthesis in gums), there is a moderate scientific basis for the use of vitamin K in supporting gum health, particularly in the context of bleeding control and bone support.

Overall, the scientific validation is moderate (rated 3/5), with more clinical studies needed to fully establish the benefits of vitamin K supplementation specifically for gum health in the general population.