Black triangle appeared between my teeth. Is there anything I could do to eliminate it? (photos)

The black triangle between the teeth is indicative of periodontal disease, and possibly loss of adhesion of the gum, with loss of alveolar bone. To correct it the first step would be to start with dental cleaning sessions, once a correct hygiene is achieved, analyze if a periodontal corrective surgery is necessary, in our clinic Empower You Smile, Dr. Bagga, specialist in periodontics, will be in charge of clearing your doubts.