Dental Implant crowns are showing grey through tooth and grey line at gum? (Photo)

Although more clinical and radiographic studies would be necessary for an accurate answer from what we can see in the pictures you have a thin biotype periodontal tissue, which makes it more prone to recession. A solution for your particular case would be to have a soft tissue graft, which will protect your implant from future recession, as well as improve the protection of the gingiva from periodontal disease or peri-implantitis. Dr. Bagga, specialist in periodontics, will be in charge of guiding you to achieve the best treatment plan.