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No failures of dental implants were found during the follow-up period. The survival rate of dental implants placed in autogenous bone grafted maxillary sinus was 88.9% [33], which was lower than our survival rate (100%). These results may involve bone deposition by both endogenous and donor cells or the paracrine actions of donor cells. Periodontitis affects more than 20% of adults, is a major cause of tooth loss, and is associated with systemic disorders such as diabetes mellitus and cardiovascular disease [34, 35]. Previous studies of periodontal surgery have shown that gains in clinical attachment level of 0.2�C1.5 mm, reductions in probing depth of 1.5�C2.7 mm, and linear bone gains 0.3�C1.1 mm can be expected 1 year after traditional periodontal surgery [36]. https://www.selleckchem.com/products/BIBF1120.html In our study, patients who received TEB treatment had mean gains in clinical attachment level of 4.29 mm, mean reductions in probing depth of 5.12 mm, and bone gain of 3.12 mm at 1 year after treatment. These parameters were significant improvements compared with baseline levels (p https://www.selleckchem.com/products/Metformin-hydrochloride(Glucophage).html was significantly https://www.selleck.cn/products/carfilzomib-pr-171.html lower in the BMMSCs transplantation group as compared to the control group (without cell therapy) [37]. In addition, case reports using BMMSCs for the treatment of patients with conditions such as bone tumors, osteoarthritis, and spinal cord injury stated that no adverse reactions were apparent during the postoperative period [38�C40]. These studies were consistent with our clinical results showing that none of the patients had secondary clinical side effects. Taken together, regenerative bone therapies using MSCs transplantation are highly effective and reduce associated complications by accelerating new bone formation and maintaining good functional quality. We conclude that engrafted BMMSCs can be safely and effectively used as therapeutic agents after cell transplantation for long-lasting improvement. These improvements in bone structure and function likely reflect the activity of stem cells, and the regenerated bone mimics natural bone and maintains function. The therapeutic activity in engraftment of MSCs in patients with bone defects indicates that TEB transplantation may also be feasible in other disorders, such as spinal fusion, augmentation of fracture healing, and the reconstruction of various bone defects. We wish to thank Seiichi Matsuo, Jun Yoshida, and Minoru Ueda at Nagoya University, John S. Greenspan at University of California, San Francisco, Matsuo Yamamoto at Showa University, Drs.