A.B.C.'s periodontics. "M" is for mucogingival considerations.
Swenson
H M
HM
D005881:Gingiva / Q000601:surgery*; D005882:Gingival Diseases / Q000601:surgery*; D005889:Gingival Recession / Q000601:surgery*; D006801:Humans; D009061:Mouth Mucosa / Q000601:surgery*; D013524:Surgical Flaps