IRCT20190712044177N2 IRCT 2021-10-25 Shahid Beheshti University of Medical Sciences Periodontal tissue thickness in orthodontics Periodontal phenotype modification in orthodontic patients 2021-11-01 anticipated 15 Complete https://irct.ir/trial/59459 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Prevention. N/A Thin periodontal phenotype in orthodontic patients. Intervention group: All patients receive phase I periodontal therapy. In cases that surgery would be performed during orthodontic treatment, active treatment would be interrupted 3 weeks prior to the surgery and be postponed for 4 months following surgical intervention. Patients rinse their mouth with 0.2% chlorhexidine for 1 minute right before local anesthesia administration (20 mg/mL lidocaine with 1:80,000 epinephrine). An intracrevicular incision with a no.15c scalpel would be used to raise a full-thickness flap extended to two adjacent teeth mesiodistally and 5 mm beyond the mucogingival junction (MGJ) apically. Periosteal incisions would be made for passive flap advancement. The facial aspects of the interdental papillae would be deepithelialized with a microblade to allow final positioning of the flap margin coronal to the cementoenamel junction (CEJ). The exposed root surfaces would be thoroughly planed with a periodontal curette. Demineralized freeze-dried bone allograft (DFDBA; 500-1000 μm; Iranian Tissue Product Co., Tehran, Iran) would beplaced on the bone surface and be covered with a xenogeneic collagen matrix (Mucoderm®, Botiss Biomaterials, Germany). The collagen matrix would be secured with sling sutures (4-0 PLGA, Ethicon, Johnson & Johnson, NJ, USA). Flap closure would be achieved with internal vertical mattress sutures (4-0 Nylon, Ethicon, Johnson & Johnson, NJ, USA) at interdental areas.. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no further information.