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미세다공성 Biphasic calcium phosphate ceramics의 골이식 대체재로서의 기본특성에 대한 비교연구
박광범,박진우,안현욱,양동준,최석규,장일성,여신일,서조영,Park, Kwang-Bum,Park, Jin-Woo,Ahn, Hyun-Uk,Yang, Dong-Jun,Choi, Seok-Kyu,Jang, II-Sung,Yeo, Shin-Il,Suh, Jo-Young 대한치주과학회 2006 Journal of Periodontal & Implant Science Vol.36 No.4
Objective : The purpose of this study was to evaluate the physicochemical properties and cytocompatibility of microporous, spherical biphasic calcium phosphate(BCP) ceramics with a 60/40 $hydroxyapatite/{\beta}$ -tricalcium phosphate weight ratio for application as a bone graft substitute. Materials and Methods : Microporous, spherical BCP granules(MGSB) were prepared and their basic characteristics were compared with commercially available BCP(MBCP; Biomatlante, France) and deproteinized bovine bone mineral(Bio-Oss; GBistlich-Pharma, Switzerland, BBP; Oscotec. Korea), Their physicochemical properties were evaluated by scanning electron microscopy, X-ray diffractometry, Fourier-transform infrared spectroscopy, inductively coupled plasma atomic emission spectrometer, and Brunauer-Emmett-Teller method. Cell viability and proliferation of MC3T3-El cells on different graft materials were evaluated. Results : MGSB granules showed a chemical composition and crystallinity similar with those in MBCP, they showed surface structure characteristic of three dimensionally, well-interconnected micropores. The results of MTT assay showed increases in cell viablity with increasing incubation times. At 4d of incubation, MGSB, MBCP and BBP showed similar values in optical density, but Bio-Oss exhibited significantly lower optical density compared to other bone substitutes(p <0,05). MGSB showed significantly greater cell number compared to other bone substitutes at 3, 5, and 7d of incubation(p <0,05), which were similar with those in polystyrene culture plates. Conclusion: These results indicated the suitable physicochemical properties of MGSB granules for application as an effective bone graft substitute. which provided compatible environment for osteoblast cell growth. However, further detailed studies are needed to confirm its biological effects on bone formation in vivo.
상악골 Le Fort I 전진 골절단술후 비부의 연조직 변화
박광범,여환호,김수관,Park, Gwang-Bum,Yeo, Hwan-Ho,Kim, Su-Gwan 대한악안면성형재건외과학회 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.3
The nose, a striking features of the human face, is regarded by many clinicians as the keystone of facial esthetics. Clinically, as the treatment of a dentofacial deformity, the soft tissue changes that occurred normally with movement of the skeletal bases. Changes of the soft tissue in the maxillary orthognathic surgery are widening of alar base, elevated nasal tip and flattening of upper lip. In addition, soft tissue change is difficult to predict, it has considerable variability in the response of soft tissue. We reviewed patients who received Le Fort I advancement osteotomy in our department and analysed preoperative and postoperative alar base width, nasal height in clinical measurement and cephalometry and patient's satisfaction of postoperative nasal appearance.
구강악안면영역에서의 Medpor<sup>TM</sup>의 임상적용
박광범,여환호,김수관,Park, Gwang-Bum,Yeo, Hwan-Ho,Kim, Su-Gwan 대한악안면성형재건외과학회 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.1
Recently, for the reconstruction of bony defect and cosmetic improvement, many graft materials and implants have been widely used in the various surgical situations. The alloplastic materials have many advantages such as simplicity of operation, no additional need of surgery, and easy manipulation. The $Medpor^{TM}$(porous high-density polyethylene, Porex Co., USA) was initially studied in 1972 for surgical implant and introduced as an implant material for oral and maxillofacial region by Sauer and King in 1988. This material permits full ingrowth of bone into the implants, substantially increasing the implant's incorporation into the recipient site. It can be shaved during the surgery, which results in an improvement and prefabricated various size and shapes to fit into the surgical defect. The $Medpor^{TM}$ was used in 32 patients from 1995 to 1997 at the maxillofacial region. It was used for paranasal augmentation in 24 cases, for malar augmentation in 2 cases, for infraorbital augmentation in 2 cases, for mandibular angle augmentation in 2 cases, for mandibular body augmentation in 2 cases, for chin vertical augmentation in 1 case. It was mainly fixed with miniplate or screw. There were few complications except one infection and one exposure of the implant.
박찬우(PARK Chan Woo),박광범(PARK Kwang Bum),박국필(PARK Kuk Pil),인혜정(IHN Hye Jung),박매자(PARK Mae Ja),김희진(KIM Hee Jin),배용철(BAE Yong Chul) 대한체질인류학회 1998 대한체질인류학회지 Vol.11 No.1
아래턱 어금니 부위에서 임프란트의 볼혀쭉 식립 방향 결정에 영향을 미치는 해부학적 형태를 규명하기 위하여 54개의 아래턱뼈를 한전 인상재로 음형 복제를 한 후, 각 큰어금니의 치아뿌리부에서 교합평면에 수직으로 절단하여 아래턱뼈몸체, 치아머리 장축의 경사도, 턱목뿔근선의 위쪽 이를 및 아래쪽 턱뼈바닥부의 경사도, 길이 및 비율 그리고 턱밑샘오목의 깊이를 계측 분석하여 다음과 같은 결과를 얻었다. l 아래턱뼈몸체, 치아머리 장축의 경사도, 턱목뿔근선의 위쪽 이틀 및 아래쪽 턱뼈바닥부의 경사도는 어금니 부위 뒤쪽으로 갈수록 강소하는 경향을 나타내었다. 2 치아머리 장죽과 아래턱뼈몸체의 경사도에 대한 상관관계는 99% 신뢰도에서 가장 높았으며 (r_O 793), 치아 머리 장축이 아래턱뼈봉제 경사도에 비해서 첫째 큰 어금니 안쪽뿌리에서는 6 2 。’ 둘째 큰 어금니 안쪽뿌리에서는 7 6 。 정도로 크게 나타났다. 3 턱목뿔근선 위쪽 이틀의 길이는 어금니 부위 뒤쪽으로 갈수록 감소하였으나 아래쪽 턱뼈바닥부의 길이는 증가 하는 경향을 나타내었으며, 위쪽 이틀에 대한 아래쪽 턱뼈바닥부의 비용은 어금니 부위 뒤쪽으로 갈수록 증가 하였다. 4 턱밑샘요목의 깊이는 어금니 부위 뒤쪽으로 갈수록 오목함이 증가하는 경향을 나타내었다. 이상의 결과로 아래턱 큰 어긍니 부위에서 임프란트의 볼혀쪽 식립 방향은 발치 후 이틀의 흡수가 거의 진행되지 않고 치유된 발치와인 경우에는 납형 제작원 치아머리 장축에 비해 첫째 큰 어금니 안쪽뿌리에서는 6 2 。들째 큰 어금니 안쪽뿌리에서는 7 6 。 정도 혀쪽으로 기울여야 혀쪽 천공이 없이 파노라마 사진에서 설정된 임프란트의 길이 대로 안전하게 식립할 수 있을 것으로 생각된다.