IRCT2015051222249N1 IRCT 2015-06-13 Vice chancellor for research, Qazvin university of medical sciences. The effect of synthetic material in gingival reconstruction Evaluation of the effect of allograft in gingival augmentation compared to free gingival graft in patients with deficient attached gingiva 2014-11-22 anticipated 30 Complete https://irct.ir/trial/19232 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: Each patient will receive a code and will randomly be assigned to either test or control group using the SPSS software. N/A inadequate attached gingiva. Intervention 1: Control: The Free Gingival Graft (FGG) is a surgical procedure frequently used in periodontics to increase the amount of keratinized tissue surrounding a tooth or a dental implant. The major limitation to the use of the FGG technique is the need for a donor site. Amongst others are anatomic limitations, color and texture mismatch with surrounding tissue that encouraged researchers to find proper alternatives for this technique. Intervention 2: Intervention: ADMs are soft tissue matrix grafts created by a process that results in decellularization but leaves the extracellular matrix intact. This matrix provides a scaffold upon and within which the patient’s own cells can repopulate and revascularize the implanted tissue. Its utility has been demonstrated in various reconstructive techniques, such as gingival augmentation, root coverage, GBR, GTR.