Keratinized Tissue Augmentation Using Augmented Gingival Matrix Compared to Free Gingival Graft Around Implants

This is a prospective, 12-month, randomized, examiner-blinded, controlled, two-arm, parallel-group, multi-site clinical trial with a 1:1 allocation ratio comparing Augmented Gingival Matrix barrier (AGM, test graft) with a free gingival graft (FGG; standard of care) around implants in medically healthy subjects. This randomized controlled clinical trial is designed to compare free gingival graft and AGM graft with respect to both effectiveness and safety when used around dental implants. The primary outcome will be the gain in keratinized tissue width after 12 months. Secondary outcomes will include gingival thickness gain, changes in pocket depth, gingival index, and bleeding on probing, graft contraction, patient-reported pain, treatment satisfaction, and adverse events. The inclusion of both clinician- and patient-reported outcomes will provide a comprehensive evaluation of treatment performance.