• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제43권3호
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• pp.178-181
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• 2017

Peripheral odontogenic myxoma is a rare odontogenic tumor representing an extra osseous counterpart of central odontogenic myxoma. It is commonly seen in gingiva between the 3rd and 4th decades of life and appears predominantly in females. Compared to central odontogenic myxoma, it is a less aggressive, slow-growing lesion with a low recurrence rate. However, close postoperative follow-up is required because of the unlimited growth potential of incompletely removed lesions. It shares many features with other soft tissue myxoid proliferations occurring in the oral cavity and hence needs to be differentiated from them. Very few cases of peripheral odontogenic myxomas have been reported and, to the best of our knowledge, no case has been reported in a pediatric patient. We present an unusual case of peripheral odontogenic myxoma occurring in a 12-year-old girl located in the anterior mandibular gingiva, with an emphasis on differential diagnosis.

• 한국치위생학회지
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• 제15권6호
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• pp.941-946
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• 2015

Objectives: Since World Health Organization reclassified the odontogenic keratocyst as a keratocystic odontogenic tumor(KCOT) in 2005, management of KCOT remains controversial. The purpose of the this study is to present a current concept of the treatment of the KCOT. Methods: Recent articles were focused on the method of the surgical therapy and the recurrence rate of KCOT. Results: The treatment modality is divided into conservative treatment-such as simple enucleation with or without curettage or marsupialization-and aggressive treatment including peripheral ostectomy, chemical curettage with Carnoy's solution, and resection. Conclusions: Keratocystic odontogenic tumors have higher recurrence rates than other odontogenic lesions; thus, the selected type of treatment is very important.

• Imaging Science in Dentistry
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• 제32권4호
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• pp.231-234
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• 2002

The odontogenic myxoma is an infiltrative benign tumor of bone that occurs almost exclusively in the jaw bones and comprises 3% to 6% of odontogenic tumors. This neoplasm is thought to arise from the primitive mesenchymal structures of a developing tooth, including the dental follicle, dental papilla, or periodontal ligament. Radiographically the odontogenic myxoma may produce several patterns: unicystic, multilocular, pericoronal, and radiolucent-radiopaque, making the differential diagnosis difficult. In this report, two cases of the odontogenic myxoma in the jaw bones are presented. The first case involved only the mandible, while the second case involved the maxilla. Both cases presented extensive multilocular radiolucencies characteristic of odontogenic myxoma.

• 대한치과의사협회지
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• 제53권8호
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• pp.569-580
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• 2015

Cyst is a closed sac, having a distinct membrane and division compared to the nearby tissue. Most cysts in the oro-maxillofacial area are odontogenic origin and found most commonly by oral and maxillofacial surgeons. Enucleation is considered as a definitive therapy in the management of these cysts. However, to select the treatment method for large cyst, consideration of position of the cyst, size and accessibility to main structure are needed. Marsupialization is a minimal invasive technique to treat large odontogenic cyst and tumor without damage to adjacent important structures. This study was undertaken to describe three cases of odontogenic cysts and tumors of jaws that were successfully treated with enucleation after marsupialization.

• Imaging Science in Dentistry
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• 제52권4호
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• pp.415-419
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• 2022

A central odontogenic fibroma is a rare benign tumor composed of mature fibrous connective tissue with variable amounts of odontogenic epithelium. It appears at similar rates in the maxilla and mandible. In the maxilla, it usually occurs anterior to the molars. Radiographically, central odontogenic fibroma commonly presents as a multilocular or unilocular radiolucency with a distinct border. This paper reports a case of an aggressive central odontogenic fibroma involving the right posterior maxilla of a 53-year-old man. Radiographs showed an extensive soft tissue mass involving the entire right maxilla with frank bone resorption. The patient had a history of 2 operations in the region, both more than 2 decades ago. Although it was impossible to confirm the previous diagnoses, it was presumed that this case was a recurrent lesion.

• Imaging Science in Dentistry
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• 제32권2호
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• pp.89-97
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• 2002

Purpose: The objective of this study is to find the differentiating characteristics of ameloblastomas and odontogenic keratocysts of the jaw by analyzing computed tomography (CT) images of the lesions, clarify radiological characteristics associated with jaw lesions, and to make a diagnsis based on these findings. Materials and Methods : Test subjects were chosen among the patients who were diagnosed as having an odontogenic keratocyst or ameloblastoma at the Yonsei University Dental Hospital from January 1996 to December 2000 and had CT scans taken preoperatively. The subject pool was comprised of 51 cases of odontogenic keratocyst and 37 cases of ameloblastoma. The following measures were used for image analysis of the lesion: the anatomic location, CT pattern, mesiodistal width, buccolingual width, the ratios between mesiodistal width and buccolingual width, height, CT number, homogeneity of radiodensity, the appearance of a sclerotic rim, continuity of adjacent cortical bone, and displacement and resorption of adjacent teeth. Results: Comparing the CT patten, mesiodistal width, buccolingual width, height, CT number, homogeneity, appearance of sclerotic rim, continuity of adjacent cortical bone, there were statistically significant differences between ameloblastoma and odontogenic keratocyst test subjects (p<0.05). Comparing the ratios between mesiodistal width and buccolingual width, displacement and resorption of adjacent teeth, there were no statistically significant differences (p>0.05). Conclusion: We compared odontogenic keratocysts and ameloblastomas in CT scans. They occurred most frequently in the posterior to the ramus of the mandible. The findings of patterns of the CT images showed that size and border of lesions were more aggressive in ameloblastomas than in odontogenic keratocysts. The internal contents represented an increased attenuation area (IAA) in odontopenic keratocyst. Odontogenic keratocysts were shown to have higher CT numbers than ameloblastomas.

• 대한소아치과학회지
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• 제38권4호
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• pp.407-412
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• 2011

선양 치성 종양(adenomatoid odontogenic tumor)은 악골에 드물게 발생하는 치성 기원의 종양이다. 이전에는 법랑모세포종(ameloblastoma)의 한 종류로 여겨졌으나 양성이며 재발되는 경우는 극히 드물다. 상악 견치에 호발하며 대개는 무증상이지만 크기가 천천히 커져 무통성 종창을 일으킬 수 있다. 방사선학적으로 함치성 낭종(dentigerous cyst) 및 단방성 법랑모세포종(unicystic ameloblastoma)과 매우 유사하다. 일반적으로 보존적인 소파술(curettage) 및 적출술(enucleation)을 통해 치료한다. 본 증례는 하악 우측 측절치 미맹출을 주소로 내원한 10세 여자 환아에서 방사선 사진 검사를 통해 치아의 매복 및 병소를 확인하고 적출술을 시행하였다. 치아에는 브라켓을 부착하여 교정적 정출을 유도하였다. 조직학적 검사를 통해 선양 치성 종양으로 확진되었으며 양호한 치료 결과를 보였기에 보고하는 바이다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제27권2호
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• pp.174-177
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• 2001

Glandular odontogenic cyst(GOC) is a rare cyst of odontogenic origin, first described in 1988 by Gardner et al. Three glandular odontogenic cysts are presented which were experienced in the Dept. of Oral and Maxillofacial surgery, Yonsei University. The clinical characteristics, radiologic and histopathologic features, and method of treatment are discussed. One occured in the anterior maxilla, others in the mandible body area. One in the anterior maxilla showed swelling and tenderness, others not. All the lesion presented radiographically unilocular radiolucent lesion. Histopathologically, those were lined by nonkeratinizing stratified squamous epithelium of varying thickness showing plaque-like or spherical thickening. Partially, eosinophilic cuboidal cells lined the intraepithelial microcysts. Also, ciliated cuboidal cells and mucinous cells were observed. The cysts were treated by enucleation.

• Asian Pacific Journal of Cancer Prevention
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• 제16권15호
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• pp.6289-6292
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• 2015

Purpose: To determine the biological behaviour of common odontogenic cystic lesions by analysing and comparing bcl-2 expression amongst them. Materials and Methods: Our study covered 90 formalin fixed paraffin embedded tissue samples: 26 primary cases each of radicular cysts (RC), dentigerous cysts (DC) and odontogenic keratocysts (OKC) and 12 of recurrent OKCs. Bcl-2 expression was analysed immunohistochemically and data analysis was accomplished using SPSS version 17.0. Means were taken for age while for gender and site of the lesions frequencies and percentages were determined. The Chi-square test was applied to evaluate any statistically significant difference of bcl-2 expression in these lesions and p value of ${\leq}0.05$ was taken as significant. Results: All the recurrent OKCs showed a strong positivity for bcl-2 that was absent in all of its primary cases (p value<0.05). Although variation in expression of bcl-2 was not found to be statistically significant between RC and DC, however, it became significant when all primary cases of these common odontogenic lesions were compared. Conclusions: Recurrent OKC showed comparatively a more aggressive behaviour than their primary counterparts and also from RC and DC. Bcl-2 proved to be a valuable adjunct in determining aggressive biological behaviour of odontogenic lesions.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제29권5호
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• pp.451-455
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• 2007

The glandular odontogenic cyst is an uncommon odontogenic cyst as a distinct entity. We reviewed a series of 7 glandular odontogenic cysts of the jaws experienced between 2003 and 2006 at the department of Oral and Maxillofacial surgery, Chosun university. The study group consisted of 3 females (42.9%) and 4 males (57.1%), with an age range of 31 to 75 years and mean age was 58.6 years. The maxilla was involved in 5 cases (71.4%) and the mandible in 2 cases (28.6%). Three cases involved impacted tooth. Clinically 6 cases showed swelling and tenderness. All the lesion presented well-defined unilocular radiolucent lesion radiographically. Provisional clinical diagnosis was varied, incisional biopsy was done in 1 case. Histopathologically, those were lined by non-keratinized stratified epithelium and thickened epithelial segments (plaques) are seen within the lining epithelium. And epithelial lining contains eosinophilic cuboidal type cells, mucous cells and mucin pools in microcystic areas are identified. All cysts were treated by enucleation. All cases are not recurred during follow up period.