Guided gingival growth to increase keratinized tissue
Basically just using a healing abutment that isn’t quiet tall enough for it to stick all the way out. A 2-3mm tall healing abutment is often ideal. An incision is made to uncover implant, healing abutment is placed, and tissue is sutured up and over. Tissue heals almost over and 4 weeks later a new taller abutment is placed pushing all the extra tissue to the buccal.
For teeth that need a dental implant and have little keratinized tissue to start with one can use this method pre-extraction to gain tissue.
Source of this information can be found in dentistry today