• 제목/요약/키워드: ameloblastoma

검색결과 146건 처리시간 0.022초

법랑모세포종으로 하악골 절제 및 재건술 시행한 환자에서 임플란트 고정성 보철물 수복 후 원인 미상의 인접 치아 정출이 발생한 증례 및 고찰 (A case of unexpected adjacent tooth extrusion after implant fixed prosthetic treatment, who had undergone mandibular resection and reconstruction due to ameloblastoma)

  • 김수진;하태욱;김형준;김지환
    • 대한치과보철학회지
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    • 제57권4호
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    • pp.448-455
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    • 2019
  • 법랑모세포종은 치성 상피성 양성 종양으로 재발률이 높아 주변 조직의 광범위한 절제 및 결손부의 재건을 필요로 한다. 술 후 치아 결손 부위의 보철치료 시에 재건 부위의 해부학적 한계로 인해 임플란트 식립을 동반한 보철 치료가 추천된다. 본 증례에서는 법랑모세포종으로 인해 하악골 분절 절제술 및 장골을 이용한 하악골 재건술을 시행한 환자에서 재건 부위 상실치를 임플란트 고정성 보철물로 수복하였고 임플란트 보철물을 장착 완료 한 14개월 뒤 원인 미상의 인접치 정출로 인해 임플란트를 포함한 전방부 치아에서 1 mm 가량의 개방 교합이 발생하였다. 성인에서 상악 전치부 임플란트 식립 후 잔존 성장으로 인해 임플란트 저위 교합이 발생하는 경우는 보고된 바 있으나 본 증례는 구치부에서 인접한 자연치의 정출로 인해 임플란트 보철물을 포함한 전방 치열의 개방 교합이 발생한 것으로 그 유사 보고가 흔하지 않다. 이에 정출된 치아를 압하 하는 교정 치료를 동반한 전체 치료 과정을 보고하고 원인 미상의 자연치 정출이 발생한 원인에 대해 고찰해보고자 한다.

Odontoma in a Rat

  • 안병우
    • 한국수의병리학회:학술대회논문집
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    • 한국수의병리학회 2000년도 추계학술대회 및 정기총회
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    • pp.27-27
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    • 2000
  • 랫드의 치아에서 발생하는 종양에는 에니멜모세포종 (ameloblastoma), 에나멜모세포성 치아종 (ameloblastic odontoma), 치아종 (odontoma) 이 있다 . 에나멜모세포종은 상피종양으로서 법랑질(enamel), 상아질 (dentin) , 시멘트질 (cementum) 을 형성하지 않는다 . 대부분의 에나멜모세포종은 소포성 (follicular) 성장이나 얼기상 (plexiform) 성장방식을 띠게 된다. 에나멜모세포성 치아종(ameloblastic odontoma) 은 치조직 종양으로서 에나멜모세포종 같이 연조직으로 된 부분과 치아종 (odontoma) 처럼 상아질, 법랑질, 시멘트질과 같은 단단한 부분으로 구성되어 있다. (중략)

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Ossifying Epulis with Acanthomatous Ameloblastoma

  • Wang, Ji-Hwan;Park, Ki-Tae;Sur, Jung-Hyang;Jung, Dong-In;Yeon, Seong-Chan;Lee, Hyo-Jong;Lee, Hee-Chun
    • 한국임상수의학회:학술대회논문집
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    • 한국임상수의학회 2009년도 추계학술대회
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    • pp.236-236
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    • 2009
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하악골 부분절제술후 이물성형재료에 의한 즉시재건술이 실패된 예에서 양측 장골뼈와 Miniplate Osteosynthesis 를 이용하여 재건시킨 법랑아세포종 치험 1예 (LATE RECONSTRUCTION OF PARTIALLY-RESECTED MANDIBLE AFTER REMOVAL OF AMELOBLASTOMA OF THE MANDIBLE)

  • 박형식;김선용;권준호;이상휘
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제12권1호
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    • pp.171-179
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    • 1990
  • This is a report on a case of delayed reconstruction after partial mandibularectomy for Ameloblastoma involving symphysis and bodies of the mandible by using of two large pieces of corticocancellous bone blocks obtained from both iliac crests. The authors failed immediate reconstruction with two kinds of Alloplasts(metal, methylmethacrylate) at two times of trial due to known infection and suggestive poor histocompatibility of materials aginst the host who has been suffered from long-term and active pulmonary tuberculosis. However we could get success late reconstruction of this problem-occured and curved area with two pieces of large corticocancellous blocks by using of miniplate osteosynthesis and biphasic external pin fixation. From our experience we are obtained some results as follows : 1. Alloplastic graft materials seemed to be dangerous to maintain successfuly in patient who has a long-term debilitating disease as a active pulmonary tuberculosis. 2. Biphasic external skeletal pin fixation appliance gave many advantages such as maintain functional position of the remained bodies and condyles of the mandible after removal of failed alloplasts and during control of inflammation of this area, assist supportive roles to fix and maintain bone grafts during healing, allow mandibular movement during healing and so offer to conduct normal functional stimuli to bone grafts during osteogenesis etc. 3. Bony union was successful between not only normal bones and grafted bones but also grafted bone pieces even though we used two pieces of large blocks of corticocancellous bone for graft. 4. Miniplate osteosynthesis was not affect any adverse effects to bone grafts but offered good role of fixation and maintenance for bone grafts.

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Glandular odontogenic cyst mimicking ameloblastoma in a 78-year-old female: A case report

  • Lee, Byung-Do;Lee, Wan;Kwon, Kyung-Hwan;Choi, Moon-Ki;Choi, Eun-Joo;Yoon, Jung-Hoon
    • Imaging Science in Dentistry
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    • 제44권3호
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    • pp.249-252
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    • 2014
  • Glandular odontogenic cyst (GOC) is a rare, potentially aggressive jaw lesion. The common radiographic features include a well-defined radiolucency with distinct borders, presenting a uni- or multilocular appearance. A cystic lesion in the posterior mandible of a 78-year-old female was incidentally found. Radiographs showed a unilocular lesion with a scalloped margin, external root resorption of the adjacent tooth, and cortical perforation. This lesion had changed from a small ovoid shape to a more expanded lesion in a period of four years. The small lesion showed unilocularity with a smooth margin and a well-defined border, but the expanded lesion produced cortical perforation and a lobulated margin. The provisional diagnosis was an ameloblastoma, whereas the histopathological examination revealed a GOC. This was a quite rare case, given that this radiographic change was observed in the posterior mandible of an elderly female. This case showed that a GOC can grow even in people in their seventies, changing from the unilocular form to an expanded, lobulated lesion. Here, we report a case of GOC with characteristic radiographic features.

악골에 발생한 양성 치성종양의 임상 및 방사선학적 연구 (CLINICAL AND RADIOGRAPHIC STUDY OF BENIGN ODONTOGENIC TUMORS IN THE JAWS)

  • 김경예;박창서
    • 치과방사선
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    • 제19권1호
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    • pp.89-101
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    • 1989
  • The author observed and analyzed the age, sex, chief complaint and radiographic finding of sixty-one cases of benign odontogenic tumors seen in Yonsei Medical Center, for the period of Jan. 1979 to Aug. 1989. The results were as follows: 1. Benign odontogenic tumors of 61 cases included 52 cases (85.3%) of ameloblastoma and odontoma, and 9 cases of other lesions. Radiographically, the border of the lesions were well-defined. 2. Ameloblastoma constituting twenty-seven cases (44.3%) occurred the average age of 31.1 years and had a 3:1 male predominance. The most common complaint was swelling (20 cases, 74.0%) and followed by pain (13 cases, 48.2%). Radiographically, the most common site was mandibular body area (74.0%) and the lesions were mainly multiocular radiolucency; in 17 cases (63.0%) and unilocular radiolucent lesion were seen in 10 cases (37.0%). 16 cases (59.3%) showed the resorption of roots of adjacent teeth. 3. Odontoma constituting twenty-five cases (41.0%) discovered at the average age of 16.9 years and had a 3:2 male predominance. The most common complaint was delayed eruption of tooth (8 cases, 31.0%) and 7 cases (27.0%) detected on a routine radiograph of the area. Radiographically, 17 cases (68.0%) were of compound type and 8 were of complex variety and compound odontomas were common in the anterior maxilla, whereas complex odontomas occurred more frequently in the posterior mandible. 19 cases (76.0%) showed the impaction of adjacent teeth.

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Spontaneous Peripheral Ameloblastic Odontoma in a Male Sprague-Dawley Rat

  • Li, Yinghua;Bae, Han-Ik;Kim, Hak-Soo;Kang, Min-Soo;Gong, Bo-Ho;Jung, Won-Hee;Lee, Sranna;Bae, Jin-Sook;Kim, Kap-Ho;Song, Si-Whan;Lee, Jae-Hyun;Kang, Boo-Hyon
    • Toxicological Research
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    • 제33권2호
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    • pp.141-147
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    • 2017
  • Peripheral ameloblastic odontoma is a rare variant of odontogenic tumor occurring in the extraosseous region. The present report describes a spontaneous tumor in male Sprague-Dawley (SD) rats. The clinically confirmed nodule in the right mandibular region was first observed when the rat was 42 weeks and remained until the terminal sacrifice date when the animal was 48 weeks of age. At necropsy, a well demarcated nodule, approximately $2.5{\times}2.0{\times}2.0cm$, protruded from the ventral area of the right mandible. The nodule was not attached to mandibular bone and was not continuous with the normal teeth. Histopathologically, the tumor was characterized by the simultaneous occurrence of an ameloblastomatous component and composite odontoma-like elements within the same tumor. The epithelial portion formed islands or cords resembling the follicle or plexiform pattern typical of ameloblastoma and was surrounded by mesenchymal tissue. Formation of eosinophilic and basophilic hard tissue matrix (dentin and enamel) resembling odontoma was observed in the center of the tumor. Mitotic figures were rare, and areas of cystic degeneration were present. Immunohistochemically, the epithelial component was positive for cytokeratin AE1/AE3 (CK AE1/AE3), and the mesenchymal component and odontoblast-like cells were positive for vimentin, in the same manner as in normal teeth. On the basis of these findings, the tumor was diagnosed as a peripheral ameloblastic odontoma in an extraosseous mandibular region in a SD rat. In the present study, we report the uncommon spontaneous peripheral ameloblastic odontoma in the SD rat. We also discuss here the morphological characteristics, origin, histochemical, and immunohistochemical features for the diagnosis of this tumor.

구강영역에서 발생된 낭의 방사선학적 분류에 따른 낭액내 glycosaminoglycan 성분의 비교 연구 (A STUDY ON THE RELATIONSHIP BETWEEN RADIOLOGIC CLASSIFICATION AND GLYCOSAMINOGLYCAN ANALYSIS OF CYSTIC FLUIDS IN ORAL REGION)

  • 박인우;유동수
    • 치과방사선
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    • 제23권2호
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    • pp.291-299
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    • 1993
  • This study was designed to evaluate the correlationship between radiologic classifications of cysts in oral region and glycosaminoglycan analysis of cystic fluids using cellulose acetate electrophoresis. The materials for this study consisted of 37 cases-8 periapical cysts, 10 dentigerous cysts, 10 primordial cysts, 2 residual cysts, 3 incisive canal cysts, 2 post-operative maxillary cysts, 1 mucocele on maxillary sinus, & 1 unicystic ameloblastoma-diagnosed as cystic lesions radiologically. The obtained results were as follows: 1. At the stepwise discriminant analysis, four variables-low mobility material, heparin, hyaluronic acid, & dermatan sulfate-were used to define diagnostic model for the odotogenic cyst. The model produced a sensitivity of 100% and a specificity of 85%. 2. The intensities of heparin and chondroitin-4-sulfate were greater in dentigerous cyst than periapical cyst(p<0.05). The intensity of chondroitin-4-sulfate was greater in primordial cyst than in periapical cyst(p<0.05). 3. It showed no statistically significant difference in glycosaminoglycan of the cystic fluids between dentigerous cyst and primordial cyst(p>0.05). 4. On the fluids of the cysts originated from maxillary sinus, there were especially high intensities of heparin and dermatan sulfate, and low intensity of chondroitin-4-sulfate. 5. On the fluids of unicystic ameloblastoma, there were high intensity of dermatan sulfate and low intenity of chondroitin-4-sulfate.

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상악골에 발생한 함치성낭종 1예 (A Case of Dentigerous Cyst of the Maxilla)

  • 홍기환;조규모;김홍수
    • 대한기관식도과학회:학술대회논문집
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    • 대한기관식도과학회 1983년도 제17차 학술대회연제순서 및 초록
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    • pp.19.1-19
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    • 1983
  • 함치성낭종은 악골내에 발생하는 치계낭종의 일종으로 치아형성후기에 생기는 것으로서 악골내 어느 부위에서나 발생하나 주로 하악골에 번번히 발생한다. 발생연령은 주로 20대와 30대에서 호발하여 남자가 여자보다 약간 높은 발생빈도를 갖는다. 이 낭종은 낭포에 둘러싸여 있기 때문에 여포성낭종이라고도 하는데 흔히 매복되거나 전이된 치아 또는 과잉치에서 발현된다고 한다. 상악동내로 전이된 치아는 특별한 증상없이 지내는 수도 있으나 때로는 만성염증, 범랑아세포종(Ameloblastoma) 또는 펀평상피암 (Squamous cell Carcinoma)으로 된다는 보고도 있다. 따라서 이에 대한 조기진단과 적절한 외과적 처치가 중요하다 하겠다. 치아가 비강 또는 상악동 및 상악골등의 이상위치에서 발생된 예는 1754년 Albinus가 처음 보고한 이래 우리나라에서도 박, 유, 조등에 의한 보고예가 있다. 외과적 처치로는 Enucleation, Marsupialization, Decompression 방법이 있는데 낭종의 발생부위, 크기, 감염여부, 주위조직과의 관계등 여러 가지 임상적 조건에 따라서 가장 적절한 방법을 선택해야 하겠다. 저자는 최근 전북의대 이비인후과에 우측 견치와의 종창 및 을 주소로 내원한 상악골내에 발생한 함치성낭종을 enucleation 방법으로 적출하여 좋은 결과를 보았기에 문헌적 고찰과 함께 보고하는 바이다.

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