• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.34 no.2
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• pp.220-229
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• 2008

Purpose: The present study was aimed to examine the effect of acellular dermal matrix ($AlloDerm^{(R)}$) grafted to the experimental tissue defect on tissue regeneration. Materials and Methods: Male albino rabbits were used. Soft tissue defects were prepared in the external abdominal oblique muscle. The animals were then divided into 3 groups by the graft material used: no graft, autogenous dermis graft, and $AlloDerm^{(R)}$ graft. The healing sites were histologically examined at weeks 4 and 8 after the graft. In another series, critical sized defects with 8-mm diameter were prepared in the right and left iliac bones. The animals were then divided into 5 groups: no graft, grafted with autogenous iliac bone, $AlloDerm^{(R)}$ graft, $AlloDerm^{(R)}$ graft impregnated with rhBMP-2, and $AlloDerm^{(R)}$ graft with rhTGF-${\beta}1$. The healing sites of bone defect were investigated with radiologic densitometry and histological evaluation at weeks 4 and 8 after the graft. Results: In the soft tissue defect, normal healing was seen in the group of no graft. Inflammatory cells and foreign body reactions were observed in the group of autogenous dermis graft, and the migration of fibroblasts and the formation of vessels into the collagen fibers were observed in the group of $AlloDerm^{(R)}$ graft. In the bone defect, the site of bone defect was healed by fibrous tissues in the group of no graft. The marked radiopacity and good regeneration were seen in the group of autogenous bone graft. There remained the traces of $AlloDerm^{(R)}$ with no satisfactory results in the group of $AlloDerm^{(R)}$ graft. In the groups of the $AlloDerm^{(R)}$ graft with rhBMP-2 or rhTGF-${\beta}1$, there were numerous osteoblasts in the boundary of the adjacent bone which was closely approximated to the $AlloDerm^{(R)}$ with regeneration features. However, the fibrous capsule also remained as in the group of $AlloDerm^{(R)}$ graft, which separated the $AlloDerm^{(R)}$ and the adjacent bone. Conclusions: These results suggest that $AlloDerm^{(R)}$ can be useful to substitute the autogenous dermis in the soft tissue defect. However, it may not be useful as a bone graft material or a carrier, since the bone defect was not completely healed by the bony tissue, regardless of the presence of osteogenic factors like rhBMP-2 or rhTGF-${\beta}1$.

• Journal of the Korean Applied Science and Technology
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• v.38 no.3
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• pp.720-726
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• 2021

The aim of this study was to examine the comparative analysis of body muscle EMGs according to the prop and different foot stability during Pilates bridge motion. Eighteen adult males(age, 22.3±2.1 years; height, 173.89±4.51 cm; body mass, 72.61±4.13 kg; and BMI, 24.03±1.31 kg/m²) participated in this study as subjects. The Pilates bridge was composed of a total of 9 motions, according to the props (NP, no prop; RG, ring; GB, gym ball) and different foot stability (BS, basic surface; FR, form roller; BOSU, both sides up). We measured the right's muscle activities of the upper rectus abdominis, lower abdominal stabilizers, external oblique, adductor longus, rectus femoris, vastus lateralis, tibialis anterior, and biceps femoris. The research findings were as follows. During Pilates bridge motion, the use of GB was found to be more effective in activating the body muscle. And during Pilates bridge motion, the use of BOSU was found to be most high in activating the body muscle as well. To summarize the research findings, the use of GB and BOSU during Pilates bridge motion were discovered to enormous affect muscle activities. Therefore, the results of this study are expected to be able to present efficient Pilates bridge exercises for strengthening physical strength.