IRCT20201215049728N1 IRCT 2021-01-09 Tabriz University of Medical Sciences The effect of a growth factor on restoration results in maxillofacial lift The effect of Concentrated Growth Factor (CGF) on healing outcome in maxillary sinus graft (histological examination) 2020-12-21 anticipated 9 Complete https://irct.ir/trial/53030 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The sampling method is random among the people referring to the Tabriz Dental School. The randomization method is simple and the unit is individual. To do this, the types of treatment are identified with code A (Growth factor) and B(Xenograft ), and then will be placed in sealed envelopes and will be stirred. Then they are randomly taken out of the bag and after observing the code, the desired treatment will be given to the right side and the other treatment will be given to the left side of the patient's mouth, Blinding description: Samples prepared from individuals are sent as coded form to the laboratory. The examiner (histologist) has no knowledge of the type of intervention. 3 Dental implants. Intervention 1: Intervention group 1: Concentrated growth factor (CGF) is placed in the sinus and after 6 months, a histological sample will be prepared from the osteotome site with a 2.7mm narrow terpene milling machine and will be sent to the histological laboratory for examination. Intervention 2: Intervention group 2: A xenograft is placed in the sinus on the other side of Navateb Pars Company and after 6 months, a histological sample from the osteotome site will be prepared with a 2.7mm narrow terpene milling machine and will be sent to the histology laboratory for examination. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information