Peri-implant vestibuloplasty

 In the posterior maxilla region the vestibulum is often flattened and cheek ligaments inserted high on the ridge.
A localized vestibuloplasty creates favorable peri-implant mucosa conditions.

The mucosa is incised along the linea girlandiformis (with a scalpel) and detached from the periosteum towards vestibular (with scissors).  
The mucosa split flap is moved towards vestibular and fixed to the periosteum with a wide, horizontal mattress suture.