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Comparative Study of Gene-activated Bone Substitute and Xenogenic Bone Matrix in Alveolar Ridge Augmentation

Brief Summary:
The study aim is to compare the effectiveness of two bone substitutes, the gene-activated bone substitute based on octacalcium phosphate and plasmid DNA encoding VEGFA gene and xemogenic deproteinized bone matrix, mixed with shredded autobone in vertical and horizontal augmentation of alveolar ridge before dental implantation
Detailed Description:

An open-label randomized controlled clinical trial, two cohort. Patients who met the inclusion criteria is planned to be enrolled into the trial. On enrollment, all patients will have screening, a set of clinical examination, instrumental investigations and laboratory tests, including dental CT of the affected jaw with the assessment of alveolar ridge width and height.

All patients enrolled in the study will be subjected to guided bone regeneration surgery of the upper or lower jaw with the use of investigational bone substitutes mixed with shredded autobone harvested during the surgery. If the height of alveolar ridge needs to be augmented, the non-resorbed systems for granular material fixation will be used.

The clinical study results will be evaluated at the time points of 1, 2, 10, 30, 90, and 180 days with clinical examination, instrumental investigations and laboratory tests. A control dental CT will be carried out before dental implantation for the primary outcome measure, at 180 days after surgery. The clinical trial completion date is the day of the second surgery, a dental implant placement. During the procedure, trephine biopsy samples will be harvested from the bone grafting area addressing the secondary outcome measure.


Principal Investigator:Grigory Volozhin, MD, PhDA.I. Evdokimov Moscow State University of Medicine and Dentistry

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