상악 구치부에 식립된 엔도포아 임플란트의 후향적 연구

김상수(Sang-Soo Kim),안미라(Mi-Ra Ahn),이원혁(Won-hyuk Lee),정희승(Heui-Seung Jung),신임희(Im-hee Shin),손동석(Dong-Seok Sohn) 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.5

Purpose: The purpose of this retrospective report was to analyze long-term survival rate of sintered porous-surfaced dental implant (Endopore Dental Implant system, Innova Corporation, Toronto, ON, Canada). Methods: 61 partially edentulous patients were received a total of 127 Endopore dental implants in the maxilla. Of the 127 implants, 24 implants were restored with individual (ie, non-splinted) crowns, while 103 implants were splinted to other implants. Medical records and radiographs were evaluated and analyzed by the cumulative survival rate, location of implants, implants length and diameter, crown/implant ratio and whether the implant was splinted. Chi squire test was used statistically. Result: Of the 127 implants, 8 implants (6.3%) were removed and and cumulative survival rate was 93.7%. Conclusion: Endopore implants showed satisfactory results after up to 8 years function periods in the edentulous posterior maxilla.

Immediate provisional implant를 이용한 하악골 high condylar fracture환자의 기능회복:

장보영(Bo-Young Jang),안미라(Mi-Ra Ahn),안경미(Kyung-Mi Ahn),이원혁(Won-Hyuk Lee),손동석(Dong-Seok Shon) 대한구강악안면외과학회 2005 대한구강악안면외과학회지 Vol.31 No.1

Treatment methods of mandibular condylar fracture were conservative and surgical method. Surgical method of mandibular high condylar fracture was very difficult because approach and internal fixation of small size fracture fragment were difficult. So there is a tendency to select conservative method over surgical method for guiding a stable occlusion and avoiding TMJ disorder and growth disturbance, minimizing pain and deviation during function. But, in case of mandibular high condylar fracture patient who has no biting teeth on posterior teeth area, guiding a stable occlusion and conservative functional treatment were very difficult. In this case, patient was 62years old male. He had fracture of mandibular symphysis, right mandibular body, left mandibular high condyle. We treated the patient for mandibular symphysis and right mandibular body fracture area with surgical method. But left mandibular high condylar fracture area was difficult to treat with surgical method. So we selected a conservative functional method on left mandibular high condylar fracture area. We intended recovery of vertical dimension and stable occlusion with implantation of immediate provisional implant on maxillar and mandibular posterior teeth area, and temporary crown. And then patient did mandibular functional movement and his mandibular function was recoverd.

골신장술을 이용한 상악 전치부 수복의 치험보고

김현경,이현진,여덕성,임소연,안미라,손동석,Kim, Hyun-Kyung,Lee, Hyun-Jin,Yeo, Duck-Sung,Lim, So-Yeon,Ahn, Mi-Ra,Sohn, Dong-Seok 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.3

Objective : This is to report the criteria of success of intraoral distraction osteogenesis for alveolar augmentation in the severely atrophied alveolar defects through clinical result of 2 cases. Subjects and Methods : Anterior segmental osteotomy was performed and alveolar distractors (Martin and Leibinger, Germany) were applied each in 2 patients with severely defected anterior maxillary area. The osteomized alveolar segments were distracted by 1mm a day after latency period. After the consolidation period implants were installed with removal of distractor. The implants were evaluated clinically and radiographically. Results : In Case I, the distracted bone was directed to the palatal side, and another augmentation treatment - block bone graft, guided bone regeneration - was needed. In Case II, the successful alveolar bone augmentation was achieved. Dental implant was placed on distracted alveolar bone, and showed good osseointegration and good function without any complication. Conclusion : Distraction osteogenesis can be a good choice for alveolar ridge augmentation of severely atrophied ridges. However, the anterior esthetic prosthetics relies on the control of the vector, the kind of distractor, the healing capacity of patient and the etiology of atrophy. Therefore another study of each category would be needed.

심한 협-설골 위축에서 치조골 수평 확장술을 이용한 골 재건

여덕성,임소연,이현진,안미라,손동석,Yeo, Duck-Sung,Lim, So-Yeon,Lee, Hyun-Jin,Ahn, Mi-Ra,Sohn, Dong-Seok 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.6

Dental implant has become one of the important option for completely or partially edentulous patients, But it is challenging to reconstruct the severely atrophic ridge. Insufficient bone volume could restrict to place the wide and long implant and because of excessive interocclusal clearance, improper prosthetics could be produced. In this case bone augmentation for implant dentistry is necessary procedure to improve the insufficient bone volume. Therefore, bone augmentation or GBR is the most important procedure for successful implant placement and for ideal crown- root ratio. There are various bone augmentation techniques have been introduced recently; like block bone graft, distraction osteogenesis, inlay graft, onlay graft, etc.... In severe bucco-lingual resorption area, ridge splitting is the first choice of the treatment, because it provides a place for implantation and also has compaction effect. This technique may be indicated for sharp mandible and maxillary ridges in patients whose bone quantity is inadequate for primary stabilization. We report that the clinical experience of bone augmentation using ridge splitting technique in bucco-lingual bone resorption area.

Sandwich technique을 이용한 하악골 증대술의 치험 보고

이지수,이정광,이현진,안미라,손동석,Lee, Ji-Soo,Lee, Jung-Kwang,Lee, Hyun-Jin,Ahn, Mi-Ra,Sohn, Dong-Seok 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.3

Objective: This is to report the efficacy of the sandwich technique for bone augmentation in a moderate atrophic posterior mandible through clinical and histological results in two cases. Subjects and Method: Two patients selected had moderate bone resorption in left lower edentulous area. Sandwich osteotomy using the piezosurgery was performed and the osteomized alveolar segments were elevated by 6mm in each two patients. The interpositional mineral allograft materials were inserted in the atrophic posterior mandibles. After four months healing period, bone biopsies in the grafted areas and placement of dental implants were performed. In both cases, panoramic views were taken preoperatively to measure the alveolar bone height for diagnosis, to monitor patient healing, and to evaluate bone healing and bone gain. Results: Sufficient vertical bone height was gained by using the sandwich technique and implants were placed successfully. In radiological evaluation, there was minimal resorption of bone height after the second operation and in histomorphometric evaluation, they showed favorable new bone formation without inflammation in the grafted areas. Conclusion: The sandwich technique can be an effective choice for augmenting vertical bone height in the atrophic mandible. More of cases and long term follow-up are needed to evaluate bone resorption and implant prognosis.

미국 보건부의 질 향상활동

김선민,김재선,박영희,안미라,김형호,은상준,박건희,Kim, Sun Mean,Kim, Jae Sun,Park, Younghee,Ahn, Mi Ra,Kim, Hyeong-Ho,Eun, Sang Jun,Park, Kunhee,Shin, Youngsoo 한국의료질향상학회 2007 한국의료질향상학회지 Vol.13 No.1

최근 5년간 치성감염으로 인한 구강악안면부 근막간극에 발생한 농양환자의 임상 통계학적 검토

이원혁(Won-Hyuk Lee),안경미(Kyung-Mi Ahn),장보영(Bo-Young Jang),안미라(Mi-Ra Ahn),이중엽(Jung-Yub Lee),손동석(Dong-Suk Sohn) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.6

One of the most difficult problems to damage in dentistry is an odontogenic infection. These infections may range from low-grade, well-localized infections that require only minimal treatment to a severe, life-threatenig fascial space infection. Although the overwhelming majority of odontogenic infections are easily managed by minor surgical procedures and supportive medical therapy that includes antibiotic administration, the practitioner must constantly bear in mind that these infections may become severe in a very short time. We made an investigation was targeting on 78 male and 47 female patients (125 patients in total) who had been hospitalized because of the fascial space abscess on the oral and maxillofacial area and gained a complete recovery in Daegu Catholic University Hospital, Oral & Maxillofacial Surgery from January 1999 to December 2003. By tracing their charts, we could grasp the characteristics such as age, gender, the time of breakout and specific areas of the attacks, making a conclusive study of the statistical analysis and finally, we could reach conclusions. Now, we report the conclusion from the investigation with the literature. The proportion of males and females was approximately 3 to 2, and in age group, patients under 10 years old marked the highest, 22.4%. The patients between the age of 10 and 40 were only 14.4%, yet those who were between 40 and 80 marked 53.6% in contrast. In the monthly distribution, the order was Dec.(13.6%)-Sep.(12%)-Jan.(10.4%) and in seasonal distribution, it was winter(30.4%)-fall(28%)- summer(24.4%)- spring(19.2%). Considering the medical history, D.M. was the highest which was 30.3%, hypertension marked 24.4%, and the patients with both D.M. and hypertension were 9.0%. The major cause of infection of oral and maxillofacial areas was odontogenic infection, which marked about 96%, and especially the cases related to dental caries occurred most frequently, which was 51.2%. In the number of relaxed fascial space, single fascial space was 81.6%, and in the degree of relaxation of fascial space, the buccal space abscess marked 40.8%, following submandibular space abscess, which was 30.4%.

골이식재를 사용하지 않은 상악동 거상술

손동석(Dong-Seok Sohn),이지수(Ji-soo Lee),안미라(Mi-ra Ahn),신홍인(Hong-In Shin) 대한치과의사협회 2008 대한치과의사협회지 Vol.46 No.4

Various maxillary sinus floor augmentation techniques were common performed and in the most cases, many kinds of bone graft materials were used. The graft materials are autogenous bone or other biomaterials of human, artimal or synthetic origin. but these cases, report describes a new surgical technique by which dental implants are inserted in a void space created by elevating the sinus membrane without additional graft material in atrophic posterior maxilla. We created lateral bony window using piezoelectric device and elevated the schneiderian membrane in ten patients. Dental implants were simultancously placed and lateral window prepared was covered with non-resorbable membrane in five patients and was repositioned with bony window in five patients, without any bone graft. From the clinical and histological results, it is found there is potential capacity for bone formation and placement of implants in the maxillary sinus without the use of bone grafts or bone substitutes.

The Effect of Inorganic Selenium on Mercuric Chloride Toxcity in Glutamate Catabolism of the Liver and the Kidney of Israel Carp Cyprinus carpio nudus

Kim,Keuk Chan,Ahn,Mi Ra 부산대학교 환경문제연구소 1995 環境硏究報 Vol.13 No.-

향어의 대조군, 수은군, 수은-셀레늄군에서 각각 간과 신장의 미토콘드리아를 추출하여 수은 독성에 대한 셀레늄의 효과를 글루탐산 대사 측면에서 고찰하였다. 측정된 글루탐산 산화효소의 활성과 산소소모량은 다음과 같다. 1. 글루탐산 산화동안 소비된 산소의 양은 간에서 수은-셀레늄군이 가장 높았고 다음이 대조군이었으며 수은군에서 가장 낮았다. 신장에서는 대조군이 가장 높았으며 수은-셀레늄군이 그 다음, 수은군에서 가장 낮았다. 소비된 산소량의 조직간 비교는 대조군과 수은군에서는 간이 높았고, 수은-셀레늄군에서는 신장이 높았다. 2. 두 조직이 호흡 조절률은 대조군에서 가장 높았고 수은-셀레늄군이 다음이었으며 수은군에서 가장 낮았다. 3. 간에서 P:O율은 대조군이 가장 높았고 수은-셀레늄군이 그 다음이었고 수은군이 가장 낮았다. 신장에서는 대조군이 가장 높았으며 수은군이 그 다음, 수은-셀레늄군이 가장 낮았다. 4. 간에서 효소활성도 중 GDH의 활성이 전체적으로 GOT, GPT에 비해 낮았고 신장의 효소간 활성도의 차이는 거의 없었다. 간과 신장의 각 군에서 GDH,GOT,GPT활성은 대조군에서 가장 높았고 다음은 수은-셀레늄군, 수은군이 가장 낮았다. 향어에서 간과 신장의 완화능을 비교하면, 산소 소모량에서는 간의 완화능이 높고 효소활성도에서는 신장이 간보다 현저히 완화능이 높았다. 이와 같은 결과로 보아 간과 신장의 글루탐산 산화에서 수은의 독성을 셀레늄이 완화시키는 효과가 있다고 사료되다. This study was undertaken to investigate the effect of selenium on mercuric chloride toxicity in the glutamate catabolism of mitochondria of carp liver and kidney. The result obtained were as follows; 1. The oxygen consumption was the highest in Hg-Se group of the liver, the next in Control group and lowest in Hg group. In comparison of tissues, the liver of Control group and Hg group showed the highest and the kidney showed the lowest in Hg-Se group. 2. The respiratory control ratio(RCR) of two tissues showed the highest in Control group, the next in Hg-Se group and the lowest in Hg group. 3. In the liver, phosphate ; oxygen ratio(P:O) was the highest in Control group, the next in Hg-Se group and the lowest in Hg group. In the kidney, Control group was the highest, Hg group was the second and Hg-Se group was the last. 4. The activity of GDH was lower than GOT and GPT's, and the activities of enzyme of liver were hardly different. In each groups of the liver and the kidney, the activities of GDH, GOT, GPT were the highest in Control group, the next in Hg-Se group and the last in Hg group. Compared with alleviation of the liver and the kidney of carp, the oxygen consumption showed higher allevation in the liver than in the kidney and the enzyme activity did higher allevation in the kidney than in the liver. By these sequence, we supposed selenium affects allevation on mercuric chloride toxicity in glutamate catabolism of carp liver and kidney.

Synthesis of Poly(ethyl vinyl ethers) Containing the NLO-phores Nitrooxybenzylidenemalononitrile and Nitrooxycyanocinnamate

Lee,Ju-Yeon,Ahn,Mi-Ra 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-

3-니트로-4-(2-비닐옥시에톡시)벤즈알데히드 (1)를 말로노니트릴 또는 메틸 시아노아세테이트와 각각 축합 반응시켜 3-니트로-4-(2-비닐옥시에톡시)벤질리덴말로노니트릴 (2a)과 메틸 3-니트로-4-(2-비닐옥시에톡시)벤질리덴시아노아세테이트 (2b)를 합성하였다. 삼기능성 비닐 에테르 단량체 2a 와 2b는 양이온 개시제에 의해서 쉽게 중합되어 측쇄에 비선형 광학 발색단인 니토로옥시벤질리덴말로노니트릴과 니트로옥시시아노신나메이트를 가진 폴리(비닐 에테르)를 생성하였다. 얻어진 중합체 3a 와 3b는 상용 유기용매에 녹았으며, 아세톤에서 측정한 고유 점도는 0.20-0.30 dL/g를 보였다. 용액으로부터 캐스팅 중합체의 필름은 투명하고 취약성을 보였으며 DSC로부터 얻어진 유리 전이 온도는 72-81℃였다. 3-Nitro-4-(2'-vinyloxyethoxy)benzylidenemalononitrile (2a) and methyl 3-nitro-4-(2'-vinyloxyethoxy)benzylidenecyanoacetate (2b) were prepared by the condensation of 3-nitro-4-(2'-vinyloxyethoxy)benzaldehyde (1) with malononitrile or methyl cyanoacetate, respectively. Tri-functional vinyl ether monomers 2a and 2b polymerized readily with cationic initiators to give poly(vinyl ethers) with the NLO-chromophores nitrooxybenzylidenemalononitrile or nitrooxycyanocinnamate in side chain at -60℃ in high yields. The resulting polymers 3a and 3b were soluble in common organic solvents and the inherent viscosities of polymers were in the range of 0.20-0.30 dL/g in acetone. Solution-cast films were clear and brittle, showing Tg values in the range of 72-81℃.