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타이타늄 임프란트 주위 골유착 관여 유전자의 발현: BMP2, BMP4
심정환,지유진,송현철,Shim, Cheong-Hwan,Jee, Yu-Jin,Song, Hyun-Chul 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.4
After dental implant are planted into their bony site among the various growth factors associated with bone formation. BMP is expressed in the bone surrounding the implant fixture. By taking a close look at BMP2, BMP4 which are growth factors that take put in bone formation, its histologic features and radiographic bone healing patterns we would like to examine the mechanism of osseointegration. We randomly used 8 male and female house rabbit amd used diameter 5 mm height spiral shaped implants(Ostem, Korea) for animal use handled as a resorbable blast machined(RBM) surface and machined surface. 2group were formed and each group had RBM surface and machined surface implant or a simple bone cavity. After 3, 7, 14 and 28 days post surgery 2 objects were sacrificed from each group and histologic specimens were acquired. RT-PCR analysis was conducted and after H&E staining the extent of osseointegration was measured applying a histologic feature and histomorphometric analysis program. Quanitity one -4.41(Bio-Rad, USA) was used after scanning the PCR product image of the growth factors manifested in each group. According to the histomorphometric features the RBM, Machined surface group showed increased contact between bone and implant surface at 3, 7, 14 and 28 days after surgery. The BMP2 level increased in both experiment groups but remained unchanged in the contrast group. BMP4 levels stayed steady after the early post implantation period for RBM but showed decreased in the machined surface group and contrast group. The amount of contact between bone and implant surface increased with the passage of time. BMP2, BMP4 were expressed in both experimental group and contrast group. These growth factors play a role in osseointegration of implant.
심정환,김영균,윤필영,Shim, Cheong-Hwan,Kim, Young-Kyun,Yun, Pil-Young 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.1
Most patients with temporomandibular disorder can be treated conservatively. However, open TMJ surgery can be needed in some patients. We analysed the patients with TMD which open surgery has performed since 1998. Open surgery was carried out in 8 patients. Age ranged from 22 to 61 years, with a mean of 42.8years. All patients were male. Final diagnosis was obtained based upon clinical, radiographic and operative finding as follows; habitual luxation, bony ankylosis, traumatic arthritis, disc displacement with destructive change, disc displacement and adhesion. Etiologic factors included trauma(4), infection(2), and unknown(2). Open surgery included arthroplasty with either of condylectomy, eminectomy, meniscoplasty, capsurrohaphy. All patients were recovered uneventfully without severe complications. Some mouth opening limitation and mouth opening deviation remained. Postoperative aggressive physical therapy and careful follow up were performed. In conclusion, open TMJ surgery must be considered in organic disease such as ankylosis, tumor and TMD without favorable recovery after long-term conservative therapy.
외상성 관절원판 전위에 의한 청각장애: 증례보고 : 증례 보고 A CASE REPORT
심정환,김영균,안철민 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.2
Fifty nine year-old male patient was referred for the correction of external auditory canal impatency according to anterior bony wall fracture of canal during the otolaryngologic treatment for hearing disorder. At clinical examination there are both temporomandibular joint(TMJ) pain, tenderness and left TMJ noise. We could find that if mouth was opened, external auditory canal impateted, and if closed, patented through otoscopy. We planned exploratory TMJ open surgery under clinical diagnosis of traumatic TMJ meniscus displacement and external auditory canal bony wall fracture, of under clinical diagnosis. During arthroplasty we found that posterior displaced meniscus pressured the fractured external auditory canal so we prepositioned meniscus anteriorly. After arthroplasty, TMJ noise disappeared and hearing funtion recovered. We experienced hearing disorder due to TMJ meniscus posterior displacement, so we present a case report with literature review.
심정환,김영균,채병국 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5
A 11-month-old infancy was referred for treatment of cleft palate. The patient's congenital deformities had included oronasal fistula on the soft palate and bifid uvula. Furrow double-opposing Z-plasty was performed under general anesthesia. However, postoperative bleeding developed at ward. Despite the pressure of operative wound, venous oozing continued and hemoglobin concentration and RBC were decreased (Hb: 5.5g/dL, RBC :1.98×106/mm3). The patient was pale and confused and transferred to Surgical Intensive Care Unit(SICU) We could not keep the peripheral venous line and there was a high risk of hypovolemic shock. Emergency transfusion was performed through the central femoral venous line and emergency operation for bleeding control was carried out. We explored the operation site and found bleeding point from the posterior pharyngeal wall. Electrocoagulation and surgicel packing were carried out and bleeding was stopped.