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J Craniofac Surg. 2011 Mar 9. [Epub ahead of print] 7 ~) b3 {! u$ v; |, ]7 U7 E
Mandibular Alveolar Bony Defect Repair Using Bone Morphogenetic Protein 2-Expressing Autologous Mesenchymal Stem Cells.; }& ~' _- x) z. G. _
Chung VH, Chen AY, Kwan CC, Chen PK, Chang SC./ m& z w$ x- F
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.
/ f# X# Y$ W1 z) L) j2 qAbstract
3 L: T! C$ g; H3 {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.8 {* a6 m6 Y2 F
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.
+ G" q' w! p q; w3 b6 oRESULTS: 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.8 _6 J+ E1 [5 R9 \
CONCLUSIONS: 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.
' t" r# A) }2 QPMID: 21403565 [PubMed - as supplied by publisher]& |% E) z) X6 p, u$ r
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