• Maxillofacial Plastic and Reconstructive Surgery
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• 제15권4호
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• pp.303-316
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• 1993

The auricular cartilage grafts have been widely used in replacement of the temporomandibular joint disk. Cartilage grafts itself have a low metabolism and high survival rate after grafting. In processing the grafting materials, it was important to preserve the properties of chondrocyte proper. We used 15% glycerol and 10% DMSO (Dimethyl Sulfoxide) solutions for cartilage fixation before deep freezing. We have performed the allogenic auricular cartilage graft in the temporomandibular joint of 20 rabbits which 10 specimen was treated with 15% glycerol and the other 10 specimen was treated with 10% DMSO respectively and examined in 1, 2, 4, 6 and 8 weeks after operation histopathologically. The result were : 1. Inflammatory cell infiltration around the grafted material appeared more glycerol groups than DMSO groups at 1 week, but each group has no differences after 2 weeks. 2. Degenerative changes of grafted auricular chondrocytes were more deveolped in glycerol group than DMSO groups till 4 weeks, but there were no differences between two groups after 6 weeks. 3. Fibrous union between grafted fragment and mandibular condyle was prominent in DMSO group. 4. Vascular proliferation of the grafted auricualr cartilage was more developed in DMSO groups than glycerol group in early stage. 5. Amount of the additional growth of grafted auricular cartilage was more existed in DMSO groups than glycerol group. 6. General survival rate after grafting was more prominent in DMSO group. In summary, allogenic auricular cartilage grafts treated with 15% glycerol and 10% DMSO solution have supported to survivalbility as a cryopreservative agents, especially DMSO groups have little inflammatory cell infiltration in early stages and degenerative changes and additional growth are more prominent than glycerol groups.

• 대한치과보철학회지
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• 제55권3호
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• pp.279-285
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• 2017

구강암에 대한 외과적 처치로 구강 내 광범위한 경조직, 연조직을 제거한 환자는 저작, 연하, 발음 등의 기능적 문제와 치열, 안모의 심미적 문제를 갖게 된다. 악골 재건 후에도 치조골 등 합병증으로 인해 가철성 보철물의 유지 및 지지를 받는데 제한적이다. 임플란트 지지 고정성 보철물은 이러한 환자들에게 적절한 보철수복 방법이 되어 왔다. 본 증례는 하악 재건 후 computer-aided design과 computer-aided manufacturing을 이용하여 지르코니아 프레임워크 상부에 단일 구조 지르코니아 크라운을 제작하여 현재 치열의 기능적, 심미적 회복을 하여 이에 보고하고자 한다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제30권4호
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• pp.386-394
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• 2008

하악골에서 고분화 골육종은 매우 드물게 보고되고 있으며 조직검사상 전형적인 골육종과는 달리 다형성(pleomorphism)을 보이지 않기 때문에 양성종양으로 오진(under-diagnosis) 되기 쉽다. 그러나 정확한 환자의 진단은 적절한 치료와 환자의 예후에 영향을 큰 영향을 미친다. 그러므로 조기에 정확한 진단을 위하여는 의심되는 여러 부위에서 조직검사를 시행하고 임상소견과 방사선소견 등을 병리의사와 공유하여야 한다. 이에 초기에 진단이 어려웠던 하악골에 발생된 고분화 골육종을 경험하여 환자의 사회적 기능적 회복을 위한 수술을 시행하여 바람직한 결과를 얻었기에 문헌고찰과 함께 보고하는 바이다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제31권5호
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• pp.419-424
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• 2009

Odontogenic myxoma, a rare tumour that occurs in the jaws, locally invasive, destructive tumors that do not metastasize to lymph nodes. Large odontogenic myxoma on mandible is treated by mandibulectomy, defected mandible is reconstructed by bone graft. Reconstructed mandible is difficult to reconstruct dentition using implant because of deficiency of bone amount. So it is necessary to additional bone graft. But a poor aspect of soft tissue lead to unsatisfactory result. Because of distraction osteogenesis is possible to reconstruction of an amount of bone and soft tissue, that is advantage to reconstruction of alveolar bone on reconstructed mandible. We report with review of literatures the 25 years old male patient who had odontogenic myxoma in left mandible, was undergone mandibulectomy and successfully implant installation and prosthetic restoration after distraction osteogenesis(Track $Plus^{(R)}$, KLS Martin, Germany) on the reconstructed mandible with a free iliac bone graft, and we have conservative and successful result.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제11권1호
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• pp.297-308
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• 1989

저자동은 약 1년전 모 병원에서 하악과 상악에 각기 안모변형과 골팽창을 동반한 병소에 대해 수술을 재발한 치주인대에서 기인한 양성 섬유골성 병소를 치험하였으며 다음과 같은 결과를 얻었다. 1. 본증례 1은 32세 남자의 우측 하악 골체부에서 술후 약 1년만에 재발된 백악질골섬유종이었고 증례 2는 72세 여자의 상악 전치부에서 술후 약 5개월만에 재발소견을 보인 골섬유종이었다. 2. 방사선학적 소견에서 증례 1은 방사선 투과상의 병소내에 방사선불투과상의 석회화 물질이 함유된 혼합기의 상태였고 증례 2는 비교적 불명확한 경계를 가졌으나 방사선 투명대에 의해 치밀한 방사선 불투과상의 병소가 둘러싸여 있는 성숙기의 상태였다. 3. 조직병리학적 소견으로 두 증례 모두 조골세포의 부연이나 규칙적인 골소주 구조 및 기절내 세포성분의 증가를 관찰할 수 있었으나 증례 1에서는 골성분외에 백악질소적과 같은 석회화물질이 관찰되었고 증례 2에서는 층판골만이 관찰되어 증례 1은 백악질골섬유종, 증례 2는 골섬유종의 특징을 지닌 양성 섬유 골성 병소였다. 4. 재발된 병소이므로 증례 1은 하악 우측 제 1소구치부터 우각부까지 하악골 절제술과 장골 및 하치조신경 이식술을, 증례 2는 정상 인접골을 포함한 종물의 적출술을 시행하였다. 5. 술후 1년이 경과한 현재까지 정기적인 임상 및 방사선 검사결과 재발증상 없이 양호한 치유 경과를 보여주고 있다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권4호
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• pp.246-251
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• 2012

Purpose: The purpose of the study is to evaluate the effectiveness of anterior segmental osteotomy (ASO) in bimaxillary protrusion (BP) patients by comparison between the mandibular soft and hard tissue changes from orthodontic treatment and ASO. Methods: All 44 patients were diagnosed with BP in Kyung-Hee Medical Center. Orthodontic treatment with teeth extractions were underwent by 23 patients (Group A) and 21 patients underwent ASO (Group B). Mandibular soft and hard tissue changes were measured and evaluated, which were based on the vertical and horizontal reference line in lateral cephalometric radiographs. Statistical significance between the changes and correlation between each measurement were analyzed. Results: The amount of B point movement was lesser than that of the lower incisal tip (LIT) retraction, and LIT was tilted lingually in group A. The posterior movement discrepancy between LIT and B point was insignificant, and the inclination of lower incisor was not changed in group B. The soft tissues, including the lower lip, showed a posterior movement and reduction in the depth of mento-labial groove. According to the correlation analysis, the movement of the lower incisor was significantly related to the movement of the lower lip in group A, and the movement of the lower incisor was significantly related to that of the movement of lower lip, B point and Pog in group B. Conclusion: The orthodontic treatment in BP patients results in posterior tilting movement of the lower incisor, but ASO results in the bodily movement of the lower incisor. Consequently, ASO is more effective in BP cases because it ensures the controlled movement of the lower incisors.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제16권2호
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• pp.171-178
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• 1994

경부수활액낭종과 임파관종은 선천적으로 임파계가 발육이 정지되거나 방해 받으므로 나타나는 병소로 현재까지도 그 본태가 명확히 밝혀지지 않은 질환이다. 본 증례에서는 좌측 하악 우각부 및 상경부에 동통을 동반한 미만성 종창 및 연하장애로 1991년 7월 20일 본원을 내원한 5세 여아에서 임상 소견 및 방사선 소견을 통해 좌측 하악 우각부 및 상경부에 발생한 경부수활액낭종으로 진단하여 악하부 절개를 통해 $1{\time}6{\time}5cm$의 크기를 다방성 낭종구조를 가진 종물을 외과적으로 적출한 증례에 있어서 술후 현재까지 재발 등의 증상없이 양호한 결과를 얻었기에 문헌고찰과 함께 보고하는 바이다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제19권2호
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• pp.157-166
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• 1997

Treatment of condylar fracture is still controversial, but the indication of surgical mangement is increased due to improved fixation methods and surgical techniques. In this article, we report our clinical and radiological results with the use of lag screw osteosynthesis for fixation of fractured mandibular condyle. 12 case of condyle fracture treated by open reduction and fixation with lag screw were monitored for an average of 10 months (range from 6 months to 19 months) postoperatively. The obtained results are as follows : 1. Postoperative maximum mouth opening is achieved over 40mm except one patient. 2. Although slight crepitus and deviation of mandible during mouth opening were found, Temporomandibular joint problem is satisfactory in all but one patient. 3. Distal migration of screw and resorption of fractured fragment were found in each 2 patients, but good functional recovery was achieved in all. According to the above results, we think that lag screw osteosynthesis is relatively indicated in level III or IV condylar fracture.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제35권6호
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• pp.376-380
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• 2013

Frey syndrome is a disease characterized by abnormal sweating, facial redness, and rare pain by stimulation of taste sense on the limited area dominated by the auriculotemporal nerve and great auricular nerve. Although the developmental mechanism and histopathologic cause of Frey syndrome are still being debated, the most reliable theory is based on injury of the parathympathetic nerve connected to the auriculotemporal nerve continuing to abnormal regeneration. The other theory is that the sweat glands develop an increased sensitivity after degeneration of sympathetic fibers. Therapy of Frey syndrome includes drugs, radiographic treatment, and surgical treatment; however, in most cases, treatment is not satisfactory. This is a case report on a 24-year-old male patient with Frey syndrome caused by the fracture reduction with retromandibular approach after multiple facial traumas and spontaneous healing without any special treatment.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제12권3호
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• pp.93-102
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• 1990

The main objectives of this study was to observe the effects of Hyperbaric oxygen therapy on the healing processes of mandibuar fracture of normal rats & streptozotocin - induced diabetic rats. Author used 120 rats (Sprague - Dawley Strain) dividing into controf (60) & experimental group (60) of normal & diabetic rats. Complete fracture was produced on the left mandibular body of 120 rats, rendered hyperbaric oxygen therapy (2 hrs, daily at 2.5 atm) on experimental group and observed effects of hyperbaric oxygen therapy microscopically. The obtained results were as follows : 1. The experimental group of HBO in normal rats had the good effect until 6th week, especially the better effect at 3rd week, because of decrease of inflammatory cell infiltration, heavy proliferation of fibroblast & capillary and active callus formation. 2. The hyperbaric oxygen therapy in mandibular fracture of diabetic rats influenced especially on the healing process at 5th week, because there were much decrease of inflammatory cell infiltrations, heavy proliferation of fibroblast, capillary, osteoblasts, moderate fibrous callus formation, osteocastic activity and mild bony callus formation.