Efficacy of free gingival grafting to augment keratinized mucosa around dental implants in posterior regions after restorative procedures: A retrospective clinical study

Data on the shrinkage of free gingival grafts (FGGs) vary. Most studies have analyzed grafts in nonmolar sites because of measurement limitations and have addressed the changes in grafts and keratinized mucosa width (KMW) only in the early healing phase.