https://pubmed.ncbi.nlm.nih.gov/33450192/

Preidl R. H. M, Sky Reichert S, Coronel V. T, Kesting M, Wehrhan F, Schmitt CM. 2021
Free Gingival Graft and Collagen Matrix Revascularization in an Enoral Open Wound Situation,
Journal of Oral and Maxillofacial Surgery 79 (5): 1027-1037

Aim:
To measure and compare tissue perfusion in free gingival grafts (FGGs) and the collagen matrix (mucoderm®) in the oral cavity over time.
Material/Methods:
Vestibuloplasty in the lower edentulous jaw was performed during implant exposure, either with FGGs from the palate or with mucoderm® in 18 patients (9/group), respectively. Tissue perfusion of the soft tissue grafts was measured using laser-doppler-spectrophotometer intraoperatively on postoperative days 2, 5, 10, 30 and between days 60 and 90.
Results/Conclusion:
Healing was uneventful. Both groups presented mature keratinized mucosa around implants after healing. Perfusion parameter after vestibuloplasty substantially increased in FGG and mucoderm® group within the first 10 postoperative days without significant differences. Results indicate that tissue blood flow was established at a very similar speed.
Conclusions:
Although integration of FGGs and mucoderm® develop in a biologically different way, both transplants show comparable perfusion patterns. mucoderm® resulted in comparable graft vascularization and generated sufficient keratinized tissue.

Dr. Raimund H. M. Preidl