• Journal of Periodontal and Implant Science
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• 제27권3호
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• pp.603-619
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• 1997

레이저를 이용한 연조직 수술은 출혈이 없어 시야를 좋게 하고 시술시간이 단축되며, 술후 종창이 최소화 되고, 통증이 감소화 최소화된 반흔 형성, 그리고 레이저가 조사되는 일부 부위의 멸균효과등이 장점이 있어 최근에 의학분야 및 치의학분야에서 많이 사용되는 추세에 있다. 이에 본 연구에서는 $CO_2$레이저를 이용한 백서의 치은절제술시의 치유과정과 레이저 출력을 달리 하였을때의 치유과정을 관찰하기 위해, 백서의 상악전치의 치은조직에서 치은절제술 효과를 얻을 수 있는 최소 출력인 4watts를 이용한 부위를 대조군으로, 6watts를 이용한 부위를 실험군으로 하여, 술후 2일, 3일, 1주, 3주후에 각각 실험동물을 희생시켜 치유결과를 조직학적으로 비교 관찰하여 다음과 같은 결과를 얻었다. 대조군과 실험군 모두에서 2일째에서만 작은 크기의 혈병이 관찰되었고, 그 이후에서는 관찰되지 않았다. 2. 염증세포 침윤지역 크기는 대조군과 실험군 모두에게 2일째 가장 컸으며, 그 크기는 시간이 경과될수록 줄어들어 2주째는 거의 소실되었으며, 실험군의 경우 대조군에 비해 2,3째까지 크기가 더 컸으나, 1주째부터는 크기의 차이가 관찰되지 않았다. 3. 육아조직은 대조군, 실험군 모두 시간의 경과에 따라 점점 성숙되어, 2주째부터는 거의 정상 치은 결합조직으로 대체되는 소견을 보였고, 3주째에서는 완전한 치유양상을 보였다. 실험군의 경우 대조군보다 3일째까지는 그 크기가 더 컸으나 1주째부터는 크기의 차이가 없다. 4. 대조군과 실험군 모두에게 치은의 상피화하는 2일째에서 시작되는 소견을 보였고, 1주부터 상피돌기와 부분적인 접합상피의 재생이 관찰되었으며, 2주째부터는 구강열구상피의 각화가 시작되어 3주째에는 각화의 완성이 관찰되었다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제13권3호
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• pp.278-290
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• 1991

Prediction of the sop tissue changes following hard tissue movements is very important in the preoperative analysis of surgical changes of the patient who have orthognathic surgery. This study examined post operative changes of the mid-facial sop tissues in Koreans depending upon two major positional changes of the maxilla following Le Fort - I type osteotomy for orthognathic purposes. Sixty patients(41 males and 19 females) of Koreans were selected and divided into two groups according to directional change of movement of anterior bony structures of the Maxilla as follows : Group I (44 patients) was mooed anteriorly and/or inferiorly, and Group II (16 patients) was mooed posteriorly and/or superioly. Postoperative changes of the sop tissue measurements following hard tissue changes were examined on pre - and post - operative cephalometrics by means of computerized digitation methods and the ratios of changes were analysed. The results were obtained as follows : 1. In Group I, all of the sop tissue measures except the Pn was closely followed by the changes of the hard tissue measures in the horizontal plane, but the Sn and the Cm were only correlated to the vertical changes(p<0.001). In group II, all of the sop tissue measures excluding of the N' and the Pn were significantly correlated to the hard tissue measures in horizontal plane(p<0.001), but the Ls and Stm were only correlated relatively to the vertical changes of the ANS(p<0.01). 2. Predictable ratio of the Sn was 66% of the ANS or 56% of the A in the horizontal plane and 89% of the A in the vertical plane in Group I. In Group II, the Sn was predictable as 85% of the ANS or 70% of the A in the horizontal plane but was not predictable in vertical plane. 3. Predictable ratio of the Cm was 28% of the ANS or 50% of the A in the horizontal plane and 56% of the ANS or 36% of the A in the vertical plane in Group I. In Group II, the Cm was predictable horizontally as 74% of the A. Predictable ratio of the Pn was 30% of the ANS or 38% of the A in horizontal plane in Group I, but it was not predictable both horizontally and vertically in Group II. 4. Predictable ratio of the Ls was 52% of the Pr in Group I and 77% in Group II in the horizontal plane. The Stm was predictable as 34% of the pr or 22% of the I in the horizontal plane in Group I, and was also predictable as 55% of the pr or 68% of the I horizontally and 21% of the pr or 65% of the I vertically in Group II. 5. All ratios of change in the thickness. length and area of the upper lip following maxillary movement were statiscally correlated, however, mangitudes of them were meaningful clinically.

• Journal of Periodontal and Implant Science
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• 제26권1호
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• pp.1-26
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• 1996

This study was performed to estimate the effects of cultured bone cell inoculated on porous type hydroxyaptite for the regeneration of the artificial alveolar bone defect. In this experiment 3 beagle dogs were used, and each of them were divided into right and left mandible. Every surgical intervention were performed under the general anesthesia by using with intravenous injection of Pentobarbital sodium(30mg/Kg). To reduce the gingival bleeding during surgery, operative site was injected with Lidocaine hydrochloride(l:80,000 Epinephrine) as local anesthesia. After surgery experimental animal were feeded with soft dietl Mighty dog, Frisies Co., U.S.A.) for 1 weeks to avoid irritaion to soft tissue by food. 2 months before surgery both side of mandibular 1st premolar were extracted and bone chips from mandibular body were obtained from all animals. Bone cells were cultured from bone chips obtained from mandible with Dulbecco's Modified Essential Medium contained with 10% Fetal Bovine Serum under the conventional conditions. Porous type hydroxyapatite were immerse into the high concentrated cell suspension solution, and put 4 hours for attachin the cells on the surface of hydroxyapatite. Graft material were inserted on the artificial bone defect after 3 days of culture. Before insertion of cellinoculated graft material, scanning electronic microscopic observation were performed to confirm the attachment and spreading of cell on the hydroxyapatite surface. 3 artificial bone defects were made with bone trephine drill on the both side of mandible of the experimental animal. First defect was designed without insertion of graft material as negative control, second was filled with porous replamineform hydroxyapatite inoculated with cultured bone marrow cells as expermiental site, and third was filled with graft materials only as positive control. The size of every artificial bone defect was 3mm in diameter and 3mm in depth. After the every surgical intervention of animals, oral hygiene program were performed with 1.0% chlorhexidine digluconate. All of the animals were sacrificed at 2, 4, 6 weeks after surgery. For obtaining histological section, tissus were fixed in 10% Buffered formalin and decalcified with Planko - Rycho Solution for 72hr. Tissue embeding was performed in paraffin and cut parallel to the surface of mandibular body. Section in 8um thickness of tissue was done and stained with Hematoxylin - Eosin. All the specimens were observed under the light microscopy. The following results were obtained : 1. In the case of control site which has no graft material, less inflammatory cell infiltration and rapid new bone forming tendency were revealed compared with experimental groups. But bone surface were observed depression pattern on defect area because of soft tissue invasion into the artificial bone defect during the experimental period. 2. In the porous hydroxyapatite only group, inflammatory cell infiltration was prominet and dense connective tissue were encapsulated around grafted materials. osteoblastic activity in the early stage after surgery was low to compared with grafted with bone cells. 3. In the case of porous hydroxyapatite inoculated with bone cell, less inflammatory cell infiltration and rapid new bone formation activity was revealed than hydroxyapatite only group. Active new bone formation were observed in the early stage of control group. 4. The origin of new bone forming was revealed not from the center of defected area but from the surface of preexisting bony wall on every specimen. 5. In this experiment, osteoclastic cell was not found around grafted materials, and fibrovascular invasion into regions with no noticeable foreign body reaction. Conclusively, the cultured bone cell inoculated onto the porous hydroxyapatite may have an important role of regeneration of artificial bone defects of alveolar bone.

• Journal of Oral Medicine and Pain
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• 제33권4호
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• pp.375-382
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• 2008

구강안면 운동장애에 관한 진단 및 치료에 관한 기초를 수립하기 위하여 2007년 9월부터 2007년 12월까지 조선대학교 치과병원 구강내과에 내원한 33명의 구강안면 운동장애 환자의 연령, 성별, 전신병력 및 주소에 관한 진단명, 자각여부, 구강안면 운동의 유형 등을 분석한 결과 다음과 같은 결과를 얻었다. 1. 여자가(81.82%)가 남자(18.18%)보다 구강안면 운동장애에 많이 이환되었으며, 평균 연령은 72.78($56{\sim}87$)세였다. 2. 대부분 전신질환에 이환되어 있었고(81.82%), 가장 높은 빈도를 보인 전신질환은 고혈압(22.41%)이었으며, 당뇨(17,24%), 우울증(8.62%), 위염(8.62%)순이었다. 3. 임상증상을 분석한 결과, 측두하악장애가 17명(33.33%)으로 가장 많았으며, 연조직질환(11명, 21.57%), 구강작열감증후군(9명, 17.65%), 구강운동(8명, 15.69%), 광범위한 안면통증(6명, 11.76%) 순이었다. 4. 특정한 원인 없이 증상이 발현한 경우가 72.73%로 가장 많았으며, 보철치료 후 증상이 발현된 경우가 24.24%, 우울증약 복용과 관련이 있는 경우가 3.03%이었다. 5. 구강안면운동의 유형을 평가한 결과, 폐구형(close)이 가장 많았으며(9명, 50%), 측방형(6명, 33.33%), 개구형(3명, 16.67%) 순이었다. 6. 구강안면운동를 자각하고 있지 못하는 경우가(54.55%) 자각하고 있는 경우(45.45%)보다 더 많았다. 따라서 치과의사는 구강안면통증 환자를 치료하는데 있어 구강안면 운동장애의 가능성을 항상 염두에 두어야 한다. 또한 정확한 진단 및 처치를 통해 불필요하고 비가역적인 치료를 최소한으로 줄이고자 항상 노력을 기울여야 할 것이다.

• Journal of Korean Dental Science
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• 제5권2호
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• pp.68-76
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• 2012

Purpose: The headache is a symptom that various somatic or non-somatic disorders gives an effect to head and neck system. The neck and the shoulder pain is a common muscle pain that can not control and bothers the patient after chronic state. The headache and the neck and the shoulder muscle pain are treated with various conventional treatment methods. But, there are cases that symptoms did not resolve or increased in some clinical cases. And generally, the result of temporomandibular disorders (TMD) treatment is good. But, despite of a normal treatment was performed for TMD, there are cases that TMD symptoms did not resolved in clinical cases. In template clinic of Soonchunhyang University Bucheon Hospital, co-operative neurophysiologic treatment of Department of Neurosurgery and Dentistry are done for patients, who had head and neck pain or atypical symptoms that did not treated with various conventional treatment method such as surgery or medication etc. Materials and Methods: Four hundred fifty one patients who have treated in the template clinic, Soonchunhyang University Bucheon Hospital, from January of 2006 to December of 2008 were subjected in this study. Result: Overall average age was 31.9 years old. Ratio of numbers is 74.3% in female and 25.7% in male. The success rate of treatment in TMD symptom was 89.9%, in headache was 88.8%, in muscle pain was 81.6%. Statistically significance of differences visual analogue scale evaluation between before and after had been treated patients who have over average grade headache was calculated by paired t-test. P<0.05 was considered significant. Conclusion: We suggest the template appliance can be attempted for cases whose headache, the neck and the shoulder muscle pain and TMD are not resolved with various conventional treatment methods.

• Journal of Korean Dental Science
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• 제2권1호
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• pp.31-38
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• 2009

With today's social and cultural personal interactions, greater leisure time and participation in sports activities, and growing traffic volume, the risk of physical trauma has increased markedly. This is a clinical and retrospective study of patients exposed to oral and maxillofacial trauma. We clinically observed 72 patients with trauma in the Department of Oral and Maxillofacial Surgery, Kyunghee University Dental Hospital, from June 2006 through November 2007. The following data was obtained: 1. The male:female ratio of patients having experienced physical trauma was 6.2:1, with most patients in their twenties. 2. Traffic accident (37.5%) was the most common cause of trauma. 3. The highest incidence of fracture occurred to the zygomatic arch(22.1%) among mid-facial fractures and angle(37.5%), symphysis(35.4%) in mandible fractures. 4. Open reduction (88.9%) was the most frequently used form of treatment. Closed reduction was performed on the remaining 11.1% of cases. 5. Teeth and alveolar bone damage occurred in 23.6% of all cases. 6. Other injuries that were related to mid-face fracture occurred in 27.8% of all cases. 7. Post-operative complications occurred in 31.9% of cases, and the highest complication was the nerve injury.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제31권4호
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• pp.353-360
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• 2009

양측 구순열의 코-입술 동시 수술의 원칙이 확립되었고 기법은 계속 진화하고 있다. 이에 따라 예전에 전형적으로 보이던 양측 구순열비의 오점들이 더 이상 명확히 보이지 않게 되고 있다. 외과의사들은 양측 구순열비 교정에 대한 원칙을 숙지하고 술전 악정형치료를 효과적으로 유도하고 성장이라는 4차원적 변화를 예견하는 3차원적 설계와 코-입술 동시 수술의 기법을 채득하여 환자를 치료하여야 한다. 또한 수술후 정기적인 관찰과 평가는 외과의사의 의무가 되어야 하고 문제가 분명해 질 때는 적절히 수정하여야 한다. 이번에 소개한 Mulliken의 치료법은 단순히 기법만을 중시하는 것이 아니라 원칙과 의무, 성장을 고려하는 4차원적 치료이다. 저자들은 이 치료법이 환자들과 외과의사들에게 많은 도움이 되기를 바란다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제33권6호
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• pp.631-635
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• 2007

Purpose: The classic technique for open reduction of subcondylar fractures is the submandibular approach. The aim of this study was to evaluate clinical result of retromandibular approach to displaced subcondylar fractures. Material and methods: During a period of 24months we perfomed a prospective study with a retromandibular approach in 23 patients with displaced subcondylar fractures. In this article we describe clinical result in 23 patients with follow ups for 3 months after surgery. Preoperatively all patients had malocclusion and radiology demonstrated displacement. Result: The retromandibularl approach for ORIF was good in all case. Mouth opening(M/O) was 49mm. Occlusion was good too. Permanent facial nerve palsy was not detected. Conclusion: Our findings indicate that the retromandibular approach is a safe technique for subcondylar fractures.

• 대한치과보철학회지
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• 제50권3호
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• pp.204-209
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• 2012

치은연 하방에 치아 우식증이나 치아 파절이 발생했을 때, 치아를 탈구시켜 즉시 정출시키는 외과적 정출술을 이용한 치관 연장술은 자연치를 보존하고 추가적인 치주적 수술 없이 단기간에 심미적인 보철 치료를 가능하게 한다. 본 환자는 16세 남환으로 본원 보존과로부터 상악 좌측 중절치의 심미 수복을 위해 본원 보철과로 의뢰되었다. 상악 좌측 중절치는 근관치료가 되어 있었으며 치관-치근 파절로 인해 협측 치관 길이는 4mm였으며 구개측 판막을 열었을 때 근심 구개측 치경부 파절 범위는 치은 하방 3-4mm에 위치하였다. 외과적 정출술을 통한 치관연장술을 시행하였으며 경과 관찰 및 임시 치아의 단계를 거쳐 3개월 후에 전부 도재관으로 수복하여 만족할 만한 임상결과를 얻을 수 있었다.

• 대한치과의사협회지
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• 제45권12호통권463호
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• pp.753-760
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• 2007

노화가 진행되고 있는 중, 장년층의 교정치료시에 통상적인 교정치료의 방법과 함께 다음과 같은 사항을 고려하여야 한다. 1. 치주질환 존재시 교정치료전 치주치료를 선행하여야 한다. 2. 발치 치료가 필요할 경우 치주 상태 및 치아 상태를 고려하여 발치할 치아를 선정하여야 한다. 3. 기존 보철물 존재시 보철물의 상태, 고정원으로 사용여부, 크기 조절 필요 여부, 환자의 경제적 상황 등을 고려햐여 처치한다. 4. 치료 종료 후 가철식 유지장치보다는 고정식 보정장치를 이용하여 치아의 유지력을 보강하는 것이 권장된다.