• 대한소아치과학회지
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• 제38권3호
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• pp.303-308
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• 2011

치아 매복이란 치아 맹출 경로에 존재하는 물리적 장벽으로 인하여 치아 맹출에 장애가 발생하는 것으로, 정상 맹출 시기까지 치아가 맹출하지 못하는 상태를 말한다. 치아 매복의 병인론은 여전히 논쟁의 대상이지만, 치아의 유착이 가장 유력한 원인 요소로 제시되고 있다. 치아 매복은 임상적으로 악궁 내 공간의 소실, 인접치의 경사, 대합치의 정출, 하방에 위치한 치배의 변위, 낭성 변이나 감염 등 다양한 문제점을 야기할 수 있다. 매복된 유구치에 대한 치료로 조기 발거 혹은 공간 소실이 발생한 경우 교정적으로 공간확장술을 시행한 후 외과적 발치를 하는 것이 전통적인 방법으로 여겨져왔다. 그러나 매복된 치아가 정상적인 형태이고 유착되지 않은 경우라면 외과적 노출 후 교정적 견인을 시행하는 방법을 고려할 수 있다. 본 증례는 하악 우측 제2유구치의 미맹출을 주소로 본원에 내원한 3세 9개월 된 남아를 대상으로 매복된 유구치 상방에 존재하는 치은 조직을 절제한 후 교정적 견인을 시행함으로써, 유치열기에 양호한 교합관계를 얻었을 뿐 만 아니라, 이후 정기 검진을 통해 혼합치열기의 올바른 치아배열 및 맹출을 유도하였음을 관찰하였기에 이를 보고하는 바이다.

• 대한소아치과학회지
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• 제37권1호
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• pp.102-108
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• 2010

매복이란 맹출로 상에 물리적 장애물이 있거나, 치아의 비정상적 위치, 또는 공간 부족 등으로 인해 맹출이 정지되는 경우이다. 이는 과잉치, 치성 종양, 또는 낭성 병소의 존재와 연관되어 나타나기도 하는데, 법랑모세포섬유종은 이러한 매복을 일으킬 수 있는 치성 종양의 한 종류이다. 법랑모세포섬유종은 많은 경우 미맹출 치아나 매복치와 연관되어 나타나며, 병소의 크기 및 양상, 그리고 환자의 연령을 고려하여 보존적 절제술(conservative resection) 또는 완전 절제술(block resection)을 시행한다. 본 증례는 하악 좌측 제1대구치의 맹출 장애를 주소로 내원한 환아에서 외과적 노출술 및 변형된 halterman 장치를 사용한 교정적 견인을 통하여 양호한 결과를 얻었기에 보고하는 바이다. 매복의 원인이었던 법랑모세포섬유종의 비교적 높은 재발률 및 악성 전환 가능성을 고려하여 추후 장기적인 추적검사가 필요할 것으로 사료된다.

• 대한치과의사협회지
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• 제22권5호통권180호
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• pp.423-427
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• 1984

A total of 114 extracted human mandibular first molars were used to study the configuration of the floor of the chamber. The specimens were ground and the pulp chamber was examined with a magnifier and explored with sharp explorer. The study showed the shape of the pulp chamber, number of root canals, and the type of canal orifice. The results were as follows; 1. In so far as observing the shape of the pulp chamber of the teeth, 58.8% of the teeth were square, 34.2% were triangle and 7.0% were ovoid shape. 2. 58.8% of the specimens have 4 root canal orifices, 34.2% have 3 root canal orifices, 7.0% have 2 root canal orifices. 3. 41.2% of the specimens show 'H' shape, 17.6% show 'Square' shape, 31.6% show 'T' shape, 2.0% show 'reverse-T' shape and 7.0% show 'I' shape.

• 대한치과의사협회지
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• 제21권7호통권170호
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• pp.579-583
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• 1983

A 58-year old woman with no molar teeth on her upper left side wanted these missing teeth to be replaced with a fixed implant prosthesis. Incision, from distal to 2nd premolar to hamulus, was performed and impression of canine fossa anteriorly, zygoma buccally, pterygoid hamulus posteriorly and palatal groove lingually was taken by Optosil (Bayer Dent.). The implant frame was made of Vitallium, and was inserted the next day after the impression had been taken. 12-days later, the 4-units fixed prosthesis was constructed. The patient was extremely comfortable, had no pain, and was able to chew food more efficiently.

• Journal of Korean Dental Science
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• 제9권1호
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• pp.42-48
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• 2016

Prophylactic removal of impacted third molars is a common procedure in dentistry, but the necessity of routine extraction is still controversial. When impacted third molars caused severe apical root resorption of the second molars, orthodontic traction of the third molars after extraction of the damaged second molars could minimize alveolar bone defect and preserve the patient's natural teeth. By well-planned orthodontic treatment, functional occlusion was established avoiding extraction of the impacted teeth and eliminating the possibility of a large bone defect after extraction.

• 대한치과의사협회지
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• 제38권6호통권373호
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• pp.567-569
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• 2000

Many teeth have been mistakenly extracted or endodontically treated because of an incorrect diagnosis of orofacial pain including toothache, A case report of persistent toothache originating from a malignant lymphoma of left maxilary sinus is presented. Root canal therapy and extraction of left upper quadrant teeth from canine to second molar did not resolve the chief complaint. The patient was referred to a neurologist and was diagnosed with a malignant lymphoma, a rare lesion of the maxillary sinus. The case stresses the importance of malignant neoplasms of maxillary sinus as a potential etiologic factor in the differential diagnosis of orofacial pain.

• Restorative Dentistry and Endodontics
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• 제15권2호
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• pp.115-121
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• 1990

Forty extracted human mandibular second molars with C-shaped canal were chosen to study the anatomy of the root canal. The experimental teeth were injected with china ink, decalcified and cleared with Winter green oil, in vitro, to study the number of root, root canal, canal per root, frequency and location of lateral canal and transverse anastomosis. 1. All teedth had one root. 2. Mesial roots with two canals were 25%, and mesial roots with one canal were 75%. All distal roots had one canal. 3. In the roots with two canals, the common apical foramen appeared in 20% and the separte apical foramen appeared in 80%. 4. The frequence of lateral canal was 33.3% and the most frequent region was middle 1/3. 5. All teeth had the transverse anastomosis in all region of the roots.

• Imaging Science in Dentistry
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• 제43권4호
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• pp.303-308
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• 2013

This report describes a 31-year-old female patient with six impacted teeth. The crowns of the impacted teeth were surrounded with cyst-like lesions with a mixed internal structure and well-defined cortical borders. Microscopic examination of the specimen obtained from the follicle of the left mandibular third molar tooth revealed loose to moderately dense collagenous connective tissue with abundant calcified material and sparse epithelial islands. A diagnosis of multiple calcifying hyperplastic dental follicles was made.

• 대한치과기공학회지
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• 제38권3호
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• pp.203-208
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• 2016

Purpose: This study introduces the production process of dog's dental prosthesis using an automated dental prosthetics technology. The occlusal interaction of dog's dental prosthesis was observed. Methods: This study was proceeded with dog's the mandibular first molar teeth. The 3D CAD designed to 3D model specimens was observed by CAD software. and The specimens designed to 3D model specimens was observed occlusal interaction by using articulator. Results: Occlusal contact point in prosthetic specimens were observed in buccal surface. and 98% of the size of the crown is the best occlusal relationship. Conclusion: Observation of occlusal relations result to 98% of the size of the crown is the best.

• 한국임상수의학회지
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• 제20권1호
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• pp.138-141
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• 2003

First case, a one-year-old female Shih Tzu weighing 3 kg with closed transverse fractures of bilateral mandibular body between 2nd and 3rd premolar teeth were treated surgically with bone plates and screws, and cranial luxation of temporomandibular joints were reduced to closed method. Second case, a 8.4 years old male Yorkshire terrier weighing 2.6 kg with closed transverse/oblique fractures of bilateral mandibular body between premolar and molar teeth were treated surgically with bone plates and screws. Radiographic examination revealed that the fractures in two cases fixed well and temporomandibular joint was stabilized. One month after operation, jaw activity was excellent and malocclusion wasn't observed.