• Journal of the korean academy of Pediatric Dentistry
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• v.39 no.1
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• pp.97-102
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• 2012

Odontoma is a mixed tumor formed by the overgrowth of ectodermal epithelial cells and mesodermal cells. It arises during normal tooth development and only grows to a certain level. It is not a true neoplasm and therefore it is considered as hamartomas. Odontomas are classified into compound and complex types based on morphology. Compound odontoma is commonly found in the anterior region of the maxilla, and has a radiopaque lesion that resembles small teeth. Usually, odontoma is treated by conservative surgical removal and there is little probability of recurrence. This paper describes three cases of compound odontoma diagnosed in children with 1 year of follow-up. These case reports present patients having eruption disturbance of primary and permanent teeth due to the presence of compound odontoma. In order to induce spontaneous eruption, conservative surgical removal was performed showing favorable results.

• Proceedings of the KTCVS Conference
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• 1993.06a
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• pp.116-116
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• 1993

• Journal of the korean academy of Pediatric Dentistry
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• v.40 no.4
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• pp.328-334
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• 2013

The keratocystic odontogenic tumor (KCOT) is a unique cyst because of its locally aggressive behavior, high recurrence rate and characteristic histological appearance. Various options are available for treatment. While some clinicians advocate aggressive forms of dental treatment, others prefer more conservative therapy. In this study, two types of conservative surgical procedures were performed to treat the tumor; marsupialization and cyst enucleation. The patients showed healing process on conservative surgical treatment and teeth erupted without recurrence. Conservative surgical treatment can be an effective treatment option for young children because of their efforts to preserve teeth and other anatomical structures.

• Journal of the korean academy of Pediatric Dentistry
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• v.30 no.3
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• pp.489-494
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• 2003

Odontomas are the common type of odontogenic tumors and generally they are asymptomatic, depending upon size, location and their limited growth potential. they are rarely diagnosed before the second decade of life, and the frequently lead to impaction or delayed eruption of permanent teeth. Odontomas are classified of compound as compound or complex by morphology. Complex odontomas are unorganized masses of odontogenic tissues, morphologically not resembling the teeth, account for approximately 25 percent of all odontomas, 22 percent of odontogenic tumor of the jaws, and have a predilection for the posterior mandible in males. The etiology of odontomas is unknown, although local trauma, infection, and genetic factors have been suggested. Usually, treatment of odontoma is conservative sugical removal and their is little probability of recurrence. This paper describes two cases of complex odontomas diagnosed in children due to impaction of maxillary first molar in all cases, the surgical excision of the lesions was performed. Follow-up after 2 years, showed spontaneous eruption of the first permanent molar to the occlusal plane.

• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.1
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• pp.1-7
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• 2001

The Dentigerous cyst is reported to be one of the most common lesions of the jaw. It is derived from reduced enamel epithelium that surrounds the crown of an unerupted tooth. Dentigerous cysts usually remains asymptomatic and presents as well-circumscribed radiolucencies surrounding the crown of a tooth. Most dentigerous cysts are treated by surgical enucleation or marsupialization of the cyst to allow eruption of the permanent tooth. The nasopalatine duct cysts derived from the islands of epithelium remaining after closure of the embryonic nasopalatine duct. The cyst presents as a well-circumscribed oval or heart-shaped radiolucency located in the midline of the anterior maxilla between the roots of the central incisors. Treatment is by surgical enucleation, employing a palatal approach. This report present two cases. One case was diagnosed with dentigerous cyst and treated by enucleation. 12 Months later, affected second premolar was erupted normally. The other case was diagnosed with nasopalation duct cyst. Histological examination of the enucleated cyst confirmed a nasopalatine duct cyst. There was no recurrence during follow up period.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.17 no.2
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• pp.186-190
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• 1995

타석증을 동반한 만성 악하선 타액선염의 경우 악하선 적출은 일반적인 치료 방법이다. 일반적으로 악하선 적출술은 수술의 용이성, 수술시야의 확보 등의 장점으로 구강외접근에 의해서 시행되어져 왔다. 그러나 시대적으로 심미적인 요구가 증대되고 있는 요즈음 구외 접근으로 인한 술후 반흔은 구외접근법의 가장 결정적인 단점이라 할 수 있다. 또한 설하선과 함께 적출하여야 할 경우 구내접근과 구외접근을 동시에 실시할 경우 술후 치유과정상의 후유증을 유발할 수도 있다. 반면에 구강내 접근에 의한 악하선의 적출은 수술상의 고도의 난이도로 수술자체의 어려움은 있으나 구강의 반흔을 남기지 않아 심미적으로 만족할 만한 결과를 얻을 수 있다. 이에 본 저자 등은 타석증을 동반한 악하선 타액선염의 환자에 있어 구내 접근으로 악하선 및 설하선 적출술을 시행하여 좋은 결과를 얻었기에 문헌고찰과 함께 보고하는 바이다.

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.194-194
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• 1998

• Proceedings of the KOR-BRONCHOESO Conference
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• 1981.05a
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• pp.8.2-8
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• 1981

The majority of esophageal foreign bodies can be removed by esophagoscopy, but some cases may require removal by external route. Recently, we experienced an impacted denture in the third esophageal constriction area, and the patient has pre-existing progressive muscular dystropy. We tried esophagoscopic removal for several times, but failed because the denture clasps were penetrated into the esophageal wall. Open thoracotomy was performed and impacted denture was successfully removed.

• Journal of the korean academy of Pediatric Dentistry
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• v.38 no.3
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• pp.262-269
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• 2011

Ameloblastic fibroma is rare true benign mixed odontogenic tumor. Most of these tumors occur in the posterior region of the mandible under 20 years of age. It develops generally associated with unerupted tooth and grows slowly on the surface of alveolar bone, therefore interferes normal tooth eruption. These lesions rarely showing a little bony expansion, are usually asymptomatic and are discovered incidentally on routine dental exam. It is similar to amleoblastic fibroodontoma and ameloblastic fibrodentinoma clinically and roentgenographically but represents no dental hard tissue formation histologically. Enucleation and curettage of surrounding bone are generally recommended options for treatment. Even though there are some reports of recurrence and malignant transformation and more aggressive treatment options like block resection are suggested sometimes, but in most cases, recurrence is unusual because it is well encapsulated and easily separated from adjucent bony socket. In these cases, we did conservative treatment such as enucleation and curettage to the patients who were visited for ameloblastic fibroma associated with delayed eruption of lower first molar. After regular check-ups, we found relatively natural eruption process of combined teeth.

• Journal of Veterinary Clinics
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• v.16 no.1
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• pp.95-99
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• 1999

돼지 심장의 해부학적 구조에 대해서는 많은 연구가 보고되어 있으나 흉골 정중선 절개와 방정중선 절개 후 절개선에 나타나는 돼지 심장 대혈관들의 외과적 해부구조에 대한 보고는 아직 없고 심장적출 및 수술에 외과적 해부구조의 숙지가 필수적이므로, 체중 15kg - 25kg의 돼지 12마리를 4마리씩 3군, 즉 정중선절개군, 우측방정중선절개군, 좌측방정중선절개군으로 나누어 흉골열개 후 나타난 심장 대혈관들의 육안적 외과구조를 보고하고 심장적출술을 시도해 각 수술절개 접근법에 따른 수술의 용이성을 관찰하여 더 나은 수술접근법을 선택하는데 필요한 정보를 제공하고자 본 실험을 실시하였다. 그 결과, 우측과 좌측 방정중선절개법에 의해 흉골을 완전 열개시에는 제 1흉골과 갑상연골 부위에서 정중선으로 접근하는 초승달형 절개를 통해 internal mammary artery의 절개 위험성을 피할 수 있음을 발견하였고 흉골정중선절개에서는 상행대동맥의 정 중앙부에 aortic cannula를 쉽게 장착할 수 있었고 특히 비숙련자에게 더 적절한 수술 방법임을 알 수 있었다. 한편 숙련자가 심장적출이 아닌 동맥관개존증등과 같은 심장수술의 경우에는 방 정중선절개로써 환축의 수술 후 통증을 감소시키고 조기치유가 가능하다면, 초승달형 절개법을 응용한 방정중선 절개를 권할 수 있고 이에 따른 임상적 관찰이 요구되는 바이다.