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J Craniofac Surg. 2011 Mar 9. [Epub ahead of print] 4 A* X6 W, D9 {/ S" |
Mandibular Alveolar Bony Defect Repair Using Bone Morphogenetic Protein 2-Expressing Autologous Mesenchymal Stem Cells.1 k( R. _1 h7 W. s5 c! o
Chung VH, Chen AY, Kwan CC, Chen PK, Chang SC.$ E- y$ X9 C* O0 y, @
From the *Department of Applied Chemistry, Providence University, Taichung, †Department of Dentistry, Chang-Gung Memorial Hospital, Taoyuan; ‡Department of Plastic Surgery, Chang Gung Memorial Hospital, Chang Gung University College of Medicine; Taoyuan; and §Department of Plastic Surgery and ∥School of Medicine, China Medical University, Taichung,Taiwan.* k$ T5 Q d) O4 m- z- J
Abstract4 X& l6 U8 x1 G4 N* ?. k- h
BACKGROUND: Mandibular bone regeneration is stepped up by human recombinant bone morphogenetic protein 2 (BMP-2) whose application is also related to limited cementum and periodontal ligament regeneration, local root resorption, and ankylosis. The alveolar bone grafting without traditional autologous bone grafts remains a challenge for plastic surgeons.- S- @( Y2 \! S/ B6 j' {, M9 |0 S
METHODS: Bilateral mandibular alveolar and periodontal defects were created over the premolar areas in 9 mature male beagles. The defects were randomly assigned for either the adenovirus BMP-2 (advBMP-2) group with BMP-2-expressing mesenchymal stem cells (MSCs) or the control with MSCs alone. The regenerated periodontal attachment apparatus was evaluated histologically, and the whole regenerated bone volume was scrutinized from three-dimensional computed tomography analysis.. T* A# \+ ]$ i% U
RESULTS: Periodontal apparatus regeneration was significantly better in the advBMP-2 group. New cementum and Sharpey fibers were observed on the denuded root surfaces in the advBMP-2 group, whereas incomplete healing with localized root surface resorption was noted in the control group. Eight weeks after implantation, the advBMP-2 group showed significant increase in bone regeneration than the control one.
# C& B# l/ ]7 r6 w0 K- ICONCLUSIONS: Thus, the use of ex vivo BMP-2-engineered autologous MSCs boosted bone and periodontal apparatus regeneration in mandibular periodontal defects. This de novo approach might be suitable for clinical mandibular bone repair and periodontal apparatus repair.
; h6 d5 ~, y8 X @8 `PMID: 21403565 [PubMed - as supplied by publisher]4 H0 C% c7 e6 G8 M( P
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