The field of science including problems of teeth, implant and surrounding supportive tissue, treatments of those problems and post treatment maintenance of periodontal health is called Periodontology.
Periodontist is a doctor who determines and treats diseases of bone, periodontal ligament, gingiva and peri implant tissues surrounding both tooth and implant and who completed his/her profession on periodontology.
Correct brushing and using assistant cleaning devices keeps gingiva diseases away from you.