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RISS 인기검색어
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- 저자 : 정중재(Jung Jae Jeong) (검색결과 6 건)
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이종호(Jong Ho Lee),정중재(Jung Jae Jeong),박준아(Jun Ah Park),윤정한(Jeong Han Yoon) 대한구강악안면외과학회 1993 대한구강악안면외과학회지 Vol.19 No.3
Tetanus is a rare disease which is caused by the exotoxin produced by Clostridium tetani. The exotoxin affects the central nervous system and its main site of action is the interneuronal synapses of the inhibitory pathways where it induce a blockade of spinal inhibition resulting in muscular rigidity. Tetanus may occur when the microorganisms are introduced not ony through wouds that provide anaerobic conditions but also without obvious portal of entry. The incubation period of tetanus varies from three days to four weeks(usually about seven days). Generally, patients with tetanus show early trismus due to the masseteric spasm with varying degree of hypertonicity of the muscles in the neck, back, abdomen and limbs. The spasms of the facial muscles result in risus sardonicus and spasm of spinal musculature causes opisthotonus. Spasms can by precipitated by all forms of stimuli such as noise, light and touch. Recently we encountered three cases of tetanus in 35-, 40-, and 54-year-old male. Their initial presentations were trismus with or without dyspnea. Subsequently, they developed muscular spasm which led to the diagnosis of tetanus, This paper reports these relatively unusual cases with the general description about tetanus and the management of the condition.
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유리 늑골-늑연골 복합이식술을 이용한 하악지 및 하악과두 재건
이종호(Jong Ho Lee),서구종(Ku Jong Seo),박광(Kwang Park),정무강(Moo Kang Jung),박기덕(Gee Duk Park),정중재(Jung Jae Jeong) 대한구강악안면외과학회 1993 대한구강악안면외과학회지 Vol.19 No.2
Various surgical technique have been used for the reconstruction of temporomandibular joint. During the past several years, conventional(nonvascularized) costochondral bone graft has been employed most successfully because of its anatomical similarity and functional capabilities of the condyle and costal cartilage. But the conventional costochondral bone graft has limitation in poor recipient site combined with large soft tissue and bone defect. With the advent of microsurgery, vascularized bone graft has proven invaluable. In this report of a case, we discuss the surgical technique and anatomy of free vascularized myoosteochondral rib graft. The result confirms that it is a successful and sound method for reconstruction of temporomandibular joint.
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이종호(Jong Ho Lee),서구종(Gu Jong Seo),박광(Kwang Park),박기덕(Gi Deog Park),정무강(Moo Gang Chung),정중재(Jung Jae Jeong),정종철(Jong Cheol Jeong),박준아(Joon Ah Park) 대한구강악안면외과학회 1993 대한구강악안면외과학회지 Vol.19 No.3
We analysed the clinical datas obtained from 10 patients who underwent reconstructive microsurgery using venous autografts(male, 9 : female, 1 : range of age, 18-70 years old). The autologous veins were used to lengthen the pedicle in 6 cases. In the rest 4 cases, we used the autologous veins to reconstruct the defect of radial artery, lacrimal canaliculi, Wharton s duct and to guide the nerve regeneration, respectively. A length of long(7 cases) or small(3 cases) saphenous veins were harvested. Various types of venous graft with long saphenous vein and its branches(Medial femoral vein and external pudendal vein) were designed, including Y-, Loop- and interpositioning-type. These designs were very helpful when there were inadequate pedicle length, unsuitable recipient vessels. We could observe the patency in the repaired Wharton s duct and lacrimal canaliculi with good salivation and lacrimal drainage. Sensory was restored with the venous tubular guide. In conlusion, venous autografting was most reliable(success rate 90%) and useful technique that might be used in the field of oral and maxillofacial surgery.
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치과용 디지털 색상 분석용 기기의 정확성과 재현 능력에 대한 평가
정중재,박수정,조현구,황윤찬,오원만,황인남 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.4
본 연구에서는 치과용 디지털 색상 분석기기 중 하나인 ShadeScan (CYNOVAD, Montreal, Canada)의 색상 분석의 정확성과 재현 능력을 평가하였다. 균일한 치아 배열을 가진 20대 성인 남자 8명과 여자 8명의 상악 인상을 고무인 상제 (Exaflex, GC, Japan)를 이용하여 채득하고, 인상에 A2 색상의 임시 크라운 제작용 자가중합형 레진을 주입하여 치아 모델을 완성하고, ShadeScan을 이용해 각 치아의 영상을 얻어 컴퓨터의 ShadeScan 프로그램으로 분석하였다. 그리고 측정 결과의 재현 능력를 평가하기 위해 2개의 치아 모델을 임의로 선택하여 각 치아마다 10회의 색상 측정을 시행하여 분석 결과를 비교하였다. 또한 분석된 영상의 동일 shade 간의 색차를 확인하기 위해 광중합 복합레진인 Gradia Direct (GC, Tokyo, Japan)와 shade guide의 CIE L^(*)a^(*)b^(*) 값을 백색과 흑색 배경판 상에서 spectrophotometer (Spectrolino, GretagMacbeth, USA)로 측정하고, ShadeScan에 의해 동일한 shade로 분석된 shade guide간의 색차를 계산하여 다음의 결과를 얻었다. 모든 치아에서 모델 제작 재료와 동일한 A2 색상므로 분석된 경우는 없었으며, 개개의 치아에서 전체 순면이 동일한 색상으로 분석된 예는 없었다. 또한 동일한 치아군에서 치아의 크기 , 형태 , 순면의 굴곡 등에 따라 서로 다른 색상 분포를 보였다. 재현성 평가에서 각 치아의 중앙부는 비교적 일정한 재현성출 보였으나, 절단부와 주변 부위는 재현성이 낮았으며, 동일한 shade로 분석된 shade guide 간에는 3 이상의 색차 (ΔE^(*))를 보였다. 이상의 결과는 치과용 디지털 색상 분석기기는 비록 높은 재현 능력은 가지고 있지만 정확성에 오류가 있음을 시사하며 , 따라서 이러한 기기를 이용한 색상 분석 시 좀 더 세밀한 주의와 다른 방법의 추가 사용이 필요하리라 사료된다. This study was done to evaluate the reliability of the digital color analysis system (ShadeScan, CYNOVAD, Montreal, Canada) for dentistry. Sixteen tooth models were made by injecting the A2 shade chemical cured resin for temporary crown into the impression acquired from 16 adults. Surfaces of the model teeth were polished with resin polishing cloth. The window of the ShadeScan handpiece was placed on the labial surface of tooth and tooth images were captured, and each tooth shade was analyzed with the ShadeScan software. Captured images were selected in groups, and compared one another. Two models were selected to evaluate repeatability of ShadeScan, and shade analysis was performed 10 times for each tooth. And, to ascertain the color difference of same shade code analyzed by ShadeScan, CIE L^(*)a^(*)b^(*)values of shade guide of Gradia Direct (GC, Tokyo, Japan) were measured on the white and black background using the Spectrolino (GretagMacbeth, USA), and Shade map of each shade guide was captured using the ShadeScan. There were no teeth that were analyzed as A2 shade and unique shade. And shade mapping analyses of the same tooth revealed similar shade and distribution except incisal third. Color difference (ΔE^(*)) among the Shade map which analyzed as same shade by ShadeScan were above 3. Within the limits of this study, digital color analysis instrument for dentistry has relatively high repeatability, but has controversial in accuracy.
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