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피판과 무피판 임플란트 수술 후 임플란트 주위 점막의 혈관분포 비교
김정인,최병호,현봉,김하랑,모동엽,Kim, Jung-In,Choi, Byung-Ho,Xuan, Feng,Kim, Ha-Rang,Mo, Dong-Yub 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.2
Background: The vascularity of the peri-implant tissue is a very important parameter in establishment and maintenance of a healthy tissue after dental implant insertion. Objective: The purpose of this study was to compare the vascularity of the peri-implant mucosa between flap and flapless implant surgeries by using a canine mandible model. Study Design: In six mongrel dogs, bilateral, edentulated, flat alveolar ridges were created in the mandible. After 3 months of healing, two implants were placed in each side by either the flap or flapless procedures. After another healing period of 3 months, biopsies were obtained, prepared for light microscopy and exposed to morphometric measurements. Results: The supracrestal connective tissue lateral to the implant was found to be more richly vascularized in the flapless group than in the flap group. Conclusion: These results suggest that the flapless procedure may have an effect on increasing the vascularity of the peri-implant mucosa.
설신경과 장협신경 전달마취 시행 후 발생된 설부와 협선반부의 장기간 이상감각증 관리 -증례보고-
김하랑,유재하,최병호,모동엽,이천의,김종배,Kim, Ha-Rang,Yoo, Jae-Ha,Choi, Byung-Ho,Mo, Dong-Yub,Lee, Chun-Ui,Kim, Jong-Bae 대한치과마취과학회 2009 Journal of Dental Anesthesia and Pain Medicine Vol.9 No.2
Trauma to any nerve may lead to persistent paresthesia. Trauma to the nerve sheath can be produced by the needle. The patient frequently reports the sensation of an electric shock throughout the distribution of the nerve involved. It is difficult for the type of needle used in dental practice to actually sever a nerve trunk or even its fibers. Trauma to the nerve produced by contact with the needle is all that is needed to produce paresthesia. Hemorrhage into or around the neural sheath is another cause. Bleeding increases pressure on the nerve, leading to paresthesia. Injection of local anesthetic solutions contaminated by alcohol or sterilizing solution near a nerve produces irritation; the resulting edema increases pressure in the region of the nerve, leading to paresthesia. Persistent paresthesia can lead to injury to adjacent tissues. Biting or thermal or chemical insult can occur without a patient's awareness, until the process has progressed to a serious degree. Most paresthesias resolve in approximately 8 weeks without treatment. In most situations paresthesia is only minimal, with the patient retaining most sensory function to the affected area. In these cases there is only a very slight possibility of self injury. But, the patient complaints the discomfort symptoms of paresthesia, such as causalgia, neuralgiaform pain and anesthesia dolorosa. Most paresthesias involve the lingual nerve, with the inferior alveolar nerve a close second. This is the report of a case, that had the persistent paresthesia care on left lingual & buccal shelf regions after the lingual and long buccal nerve block anesthesia.
상악동 점막 거상 술식에서 자가 정맥 혈액의 사용이 상악동 저 증강에 미치는 영향
김하랑(Ha-Rang Kim),모동엽(Dong-Yub Mo),이천의(Chun-ui Lee),유재하(Jae-Ha Yoo),최병호(Byung-Ho Choi) 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.5
There have been reports of successful bone formation with sinus floor elevation by simply elevating the maxillary sinus membrane and filling the sinus cavity below the lifted sinus membrane with a blood clot. But, in a review of the current literature, we found no animal study that substantiated blood clot’s ability in this respect. The aim of this study was to investigate the effect of the method of maxillary sinus floor augmentation using the patient’s own venous blood in conjunction with a sinus membrane elevation procedure. An implant was placed bilaterally in the maxillary sinus of six adult mongrel dogs so that it protruded 8 mm into the maxillary sinus after sinus membrane elevation. On one side of the maxillary sinus, the resultant space between the membrane and the sinus floor was filled with autologous venous blood retrieved from the dog. On the opposite side, the maxillary sinus was left untreated as a control. The implants were left in place for six months. The mean height of the newly formed bone in the sinus was 3.7 mm on the side without venous blood and 3.5 mm on the side with venous blood(p>0.05). There was no difference between the two sides regarding new bone height in the sinus. Our results indicate that filling the space between the lifted sinus membrane and the sinus floor with venous blood has no effect on bone formation around implants placed in the maxillary sinus cavity.
장기간의 보존적 배농술로 치료된 하악 복합골절 관련 광범위 골수염 치험 : 증례보고
김하랑,유재하,최병호,설성한,모동엽,이천의,Kim, Ha-Rang,Yoo, Jae-Ha,Choi, Byung-Ho,Sul, Sung-Han,Mo, Dong-Yub,Lee, Chun-Ui 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.6
Failure to use effective methods of reduction, fixation and immobilization may lead to osteomyelitis with the exposed necrotic bone, as the overzealous use of transosseous wires & plates that devascularizes bone segments in the compound comminuted fractures of mandible. Once osteomyelitis secondary to fractures has become established, intermaxillary fixation should be instituted as early as possible. Fixation enhances patient comfort and hinders ingress of microorganisms and debris by movement of bone fragments. Teeth and foreign materials that are in the line of fracture should be removed and initial debridement performed at the earliest possible time. Grossly necrotic bone should be excised as early as possible ; no attempt should be made to create soft tissue flaps to achieve closure over exposed bone. The key to treatment of chronic osteomyelitis of the mandible is adequate and prolonged soft tissue drainage. If good soft tissue drainage is provided over a long period, sequestration of infected bone followed by regeneration or fibrous tissue replacement will occur so that appearance and function are not seriously altered. Localization and sequestration of infected mandible are far better performed by natural mechanism of homeostasis than by cutting across involved bone with a cosmetic or functional defect. As natural host defenses and conservative therapy begin to be effective, the process may become chronic, inflammation regresses, granulation tissue is formed, and new blood vessels cause lysis of bone, thus separating fragments of necrotic bone(sequestra) from viable bone. The sequestra may be isolated by a bed of granulation tissue, encased in a sheath of new bone(involucrum), and removed easily with pincettes. This is a case report of the long-term conservative drainage care in osteomyelitis associated with mandibular fractures.
패턴이 있는 유리기층 위 러빙된 Polyimide의 광학 이방성 미세변화 정밀 측정
김하랑,김상열,Kim, Ha-Rang,Kim, Sang-Youl 한국광학회 2009 한국광학회지 Vol.20 No.5
편광법을 사용하여 패턴이 있는 LCD 유리기층위에 놓여 있는 러빙된 PI(polyimide)의 광학이방성을 분석하였다. 투과형 편광계를 사용하여 0.4 nm 이하의 극히 작은 위상지연의 크기와 광축의 방향을 정밀하게 측정하였다. 온도에 따르는 광학이방성의 미세변화를 위상지연의 크기 및 광축 방향의 변화곡선으로 나타내고 간단한 광학모델을 사용하여 설명하였다. The optical anisotropy of rubbed PI(polyimide) film on patterned LCD glass substrate is analyzed using polarimetry. The direction of the optic axis and the magnitude of the very small retardation ($\sim$ 0.4 nm or less) is precisely measured by using a transmission ellipsometer. The variation of the optical anisotropy is presented as the curve of the optic axis versus the magnitude of the phase retardation and it is explained by using a simple optical model.
국소마취하 상악 측절치 치근단 절제술 후 인식된 신경병성 비정형 치통 1예 -증례 보고-
모동엽,유재하,최병호,김하랑,이천의,김종배,Mo, Dong-Yub,Yoo, Jae-Ha,Choi, Byung-Ho,Kim, Ha-Rang,Lee, Chun-Ui,Kim, Jong-Bae 대한치과마취과학회 2010 Journal of Dental Anesthesia and Pain Medicine Vol.10 No.1
This type of neuropathic pain(atypical odontalgia) is seen most often in middle-aged women or men after dentoalveolar operation. Atypical odontalgia probably is caused by deafferentation leading to intraneural changes in the medullary dorsal horn. Treatment of this problem is difficult, but some success has been reported in uncontrolled, open-labeled studies using high doses of tricyclic antidepressants. This is the management report of a patient case, that had a neuropathic atypical odontalgia recognized with the right maxillary lateral incisor. The patient was consulted to the Department of Pain Clinics, ENT & Neurology and diagnosed the adenoid cystic carcinoma on left cerebellum and right paranasal sinus with extension to the cavernous sinus. In spite of the osteoplastic craniotomy, neurosurgical mass removal and radiation therapy were done with chemotherapy, atypical odontalgia was continued. In addition to the consultation to Psychology, stress management and antidepressant medication were done and improved slowly.
END법을 이용한 돼지콜레라바이러스 및 이에 대한 중화항체가 측정법 개량에 대한 시험
권혁진,윤석민,하용공,조성수,김교종,윤지병,Kwon Hyock-Jin,Yoon Seok-Min,Ha Rung-Kong,Cho Sung-Soo,Kim Kgo-Jong,Yoon Ji-Byung 대한수의사회 1991 대한수의사회지 Vol.27 No.12
The END method for titration of hog cholera virus and its serum neutralizing antibody was improved using ST cells grown and kept in modified media. ST cells were grown in Eagles media containing 0.5$\%$ lactalbumin hydrolysate, 10$\%$</TEX
하악골 복합 골절시 구내 열창부 상에 추가 절개 배농술을 이용한 단기간 가변적 악간고정 관리: 증례보고
모동엽,유재하,최병호,김하랑,이천의,유미현,Mo, Dong-Yub,Yoo, Jae-Ha,Choi, Byung-Ho,Kim, Ha-Rang,Lee, Chun-Ui,Ryu, Mi-Heon 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.3
Treatment of the mandibular fracture consists of reduction and fixation. The apparatus that is used to keep the jaws together during healing will often reduce the fracture as well. When the jaws are brought together and intermaxillary elastic rubber traction is placed, the occlusion of the teeth will help to orient the fractured parts into good position. Intermaxillary fixation, that is, fixation obtained by elastic bands between the upper & lower jaws to which suitable anchoring devices have been attached, will successfully treat most fractures of the mandible. Arch bars are perhaps the ideal method for intermaxillary fixation. Several types of ready-made arch bars are used. But, daily occupational life and oral hygiene is difficult to maintain during the period of longterm immobilized intermaxillary fixation (commonly 6-8 weeks), owing to malnutrition and emotional disorders in a position of the patient with mandibular fractures. Most mandibular fractures heal well enough to allow removal of fixation in about 6 weeks. Though there are many complications of mandibular fracture, such as infection, hemorrhage, trismus, paresthesia and nonunion, it is favorable to attain the short-term removable intermaxillary fixation care by use of an additive incision & drainage establishment on the oral lacerated wounds of adjacent mandibular compound fractures. The purpose of an additive incision & drainge establishment is the prevention of wound infection & nonunion by removing the hematoma & seroma in the fracture sites.
전신질환자에서 과도한 감염치아부 국소마취시 스트레스 감소법 : 문헌적 고찰 및 증례보고
유재하,최병호,설성한,김하랑,모동엽,Yoo, Jae-Ha,Choi, Byung-Ho,Sul, Sung-Han,Kim, Ha-Rang,Mo, Dong-Yub 대한치과마취과학회 2008 Journal of Dental Anesthesia and Pain Medicine Vol.8 No.1
Common dental procedures (local anesthesia and dental treatment) are potentially stress-inducing in many patients, especially medically compromised patients. The body response to dental stress involves the cardiovascular system (an increase in cardiovascular workload), the respiratory organ and the endocrine system (change in metabolism). To minimize the stress to the medical risk patient, the stress reduction protocol was established. The obtained contents were as follows: (1) Recognize the patient's degree of medical risk (2) Complete medical consultation before dental therapy (3) Schedule the patient's appointment in the morning (4) Monitor and record preoperative, perioperative and postoperative vital signs (5) Use psychosedation during therapy (6) Use adequate pain control during therapy (7) Short length of appointment: do not exceed the patient's limits of tolerance (8) Follow up with postoperative pain/anxiety control (9) Telephone the higher medical risk patient later on the same day that treatment was given. This protocol is predicated on the belief that the prevention of or reduction of stress ought to begin before the start of an appointment, continue throughout treatment, and, if indicated, into the postoperative period. The authors used the stress reduction protocol in the care of local anesthesia infected teeth in medically compromised patients. The final prognosis was comfortable without any complications.
XT15(ANCOM)를 활용한 잎담배 에테르 추출물의 최적 분석방법 구명(AOCS Method)
나승주,이정래,하아랑,김석재,서정규,Na, Seung-Ju,Lee, Jung-Lae,Ha, Ah-Rang,Kim, Suk-Jae,Seo, Jung-Kyu 한국연초학회 2010 한국연초학회지 Vol.32 No.2
The ether extract(EE) of leaf tobacco contains diverse compounds such as lipid, resinoid, paraffin hydrocarbons and pigments. Although the correlation of EE concentertion with leaf tobacco has not been established clearly, it is known that in some concentration range, EE concentration of leaf tobacco exerts good influence on the quality of tobacco. Recently, The American Oil Chemist's Society introduced new method(Am 5-04; AOCS, 2009) to determine EE concentration by AT15 extractor. This method is based on extraction with organic solvent at relatively high temperature and pressure, which significantly reduces the extraction time and ensures safety. The aim of this study is to optimize analytical condition of AOCS method for analyzing EE concentration of leaf tobacco. When sample pre-drying time and extraction time of XT15 were set to 3 hour and 30 minute and 30 minute respectively, EE concentration obtained from AOAC method. Statistical analysis(T-test) showed that there is no difference(P>0.05) between EE concentrations from two methods.