• 대한치과의사협회지
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• 제57권2호
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• pp.93-99
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• 2019

Ectodermal dysplasia is a genetic disorder in which various clinical manifestations involve two or more of the differentiated tissues of the ectoderm. Facial deformity, which is frequently associated with ectodermal dysplasia, appears in the form of cleft lip or cleft palate, especially in the middle facial area.Cleft and tooth defects result in decreased alveolar bone development.This leads to severe skeletal incongruity. Facial features include frontal protrusion, malar bone hypoplasia, flat nose, mandibular prominence and long lower facial height. This clinical report presents treatment including orthognathic surgery of a patient with Hypohidrotic Ectodermal dysplasia with cleft palate.

• Medical Lasers
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• 제9권1호
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• pp.25-33
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• 2020

Optical-based imaging technology has high resolution and can assess images in real time. Numerous studies have been conducted for its application in the dental field. The current research introduces an oral camera that includes fluorescent imaging, a second study examining a 3D intraoral scanner applying a confocal method and a polarization structure that identifies the 3D image of a tooth, and finally, an optical coherence tomography technique. Using this technique, we introduce a new concept 3D oral scanner that simultaneously implements 3D structural imaging as well as images that diagnose the inside of teeth. With the development of light source technology and detector technology, various optical-based imaging technologies are expected to be applied in dentistry.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2021년도 추계학술발표대회
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• pp.753-755
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• 2021

본 논문에서 기존의 치아가공기는 회전하는 모터를 사용하여 구성하였으나 이러한 모터는 정밀도, 반복정밀도가 50um 이하로 가공물 가공시에 치기공사나 치과의사가 사람에 맞추어 다시 작업을 해야하는 불편함과 시간적, 작업자의 피로도를 높일수 있는데 이러한 모터에 스크류나 밸트를 연결하여 선형적으로 움직일 수 있는 리니어모듈과 리니어모터를 적용하게되면 20um수준의 고정밀의 위치제어가 가능한 5축 치아가공기를 만들 수 있었다. 또한 MEMS센서를 이용하여 스핀들의 상태를 모니터링 하고 임계값을 지정하여 이상 신호 발생시 모터를 멈추어 위험상황에 대해서 인공지능기법을 이용하여 정지하거나 관리자에게 알림을 주어 효과적으로 5축치아가공기를 운영할 수 있도록 하였다.

• 대한소아치과학회지
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• 제51권1호
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• pp.88-98
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• 2024

Patients with pediatric cancer often undergo multiple therapies, such as chemotherapy, radiation therapy, and stem cell transplantation. These treatments, while essential, can result in dental developmental issues, including hypodontia, microdontia, short roots, and delayed dental development. This report presents two cases of pediatric patients diagnosed with neuroblastoma who exhibited severe tooth mobility due to short roots as a complication of cancer treatment. Moreover, we investigated the conservative management of the patients' conditions using resin wire splints and orthodontic miniscrews for skeletal anchorage along with long-term follow-ups to evaluate their prognosis.

• 대한치과교정학회지
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• 제54권4호
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• pp.199-209
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• 2024

The clinical application of aligners is accompanied by the ageing of the polymer appliances and the attachments used, which may result in inefficiency in reaching the predicted range of tooth movement, and release of compounds and microplastics in the oral cavity as a result of the friction, wear and attrition of the aligner and composite attachment. The purpose of this review is to present the mechanism and effects of in vivo ageing; describe the hydrolytic degradation of aligners and enzymatic degradation of composite attachments; examine the ageing pattern of aligners in vivo, under actual clinical scenarios; and identify a link to the discrepancy between predicted and actual clinical outcome. Lastly, strategies to deal with three potentially critical issues associated with the use of aligners, namely the necessity of weekly renewal, the dissimilar mechanical properties of aligner and attachment resulting in wear and plastic deformation of the aligner, and the development of integuments and biofilms with microbial colonization of the appliance, are discussed.

• 대한장애인치과학회지
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• 제6권2호
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• pp.112-115
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• 2010

화학치료와 방사선 치료는 보존적이고 효과적인 항암치료 방법이다. 그러나 악골 및 치아의 성장이 완료되지 않은 성장기 아동의 경우에는 발육 장애를 유발할 수 있다. 환자 의 삶의 질 개선을 위해 이러한 부작용을 예방할 수 있는 방법이 모색되어야 할 것이다.

• 한국어류학회지
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• 제27권2호
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• pp.149-152
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• 2015

퉁돔과에 속하는 Symphorus nematophorus 1개체 (표준체장 481 mm)가 거제 연안의 정치망에서 처음으로 채집되었다. 이 종은 등지느러미 연조의 앞부분이 길게 연장되어 있고, 눈과 코구멍 사이에 파인 홈이 있으며, 서골에는 이빨이 없고 체측에는 선명한 9개의 파란 줄이 존재한다. 이 미기록종의 속명과 국명은 각각 "실퉁돔속"과 "실퉁돔"으로 제안한다.

• The Journal of Advanced Prosthodontics
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• 제10권3호
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• pp.245-251
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• 2018

PURPOSE. To evaluate the accuracy of a model made using the computer-aided design/computer-aided manufacture (CAD/CAM) milling method and 3D printing method and to confirm its applicability as a work model for dental prosthesis production. MATERIALS AND METHODS. First, a natural tooth model (ANA-4, Frasaco, Germany) was scanned using an oral scanner. The obtained scan data were then used as a CAD reference model (CRM), to produce a total of 10 models each, either using the milling method or the 3D printing method. The 20 models were then scanned using a desktop scanner and the CAD test model was formed. The accuracy of the two groups was compared using dedicated software to calculate the root mean square (RMS) value after superimposing CRM and CAD test model (CTM). RESULTS. The RMS value ($152{\pm}52{\mu}m$) of the model manufactured by the milling method was significantly higher than the RMS value ($52{\pm}9{\mu}m$) of the model produced by the 3D printing method. CONCLUSION. The accuracy of the 3D printing method is superior to that of the milling method, but at present, both methods are limited in their application as a work model for prosthesis manufacture.

• 한국식품영양학회지
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• 제29권6호
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• pp.971-977
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• 2016

Development of elderly foods that improve health among the older population is needed. The purpose of this study was to investigate the preference of specific foods for development as elderly foods. A one-to-one survey method was used for data collection from 150 elderly people attending senior welfare centers. The results of the study showed that the preferred cooking materials were vegetables, meats and fishes; and preferred cooking method was soup and stew rather than deep-frying. The elderly preferred meats and seafood but they did not eat them frequently. The results of investigating the preference of specific foods including meats, Kimchi, nuts and rice cakes indicated that old people liked broiled meats, Chinese cabbage Kimchi, walnuts and nonglutinous rice cakes the most, and they did not feel comfortable with chewing the foods. Most respondents were not familiar with the elderly foods. Moreover, the most important factors affecting their choice of elderly foods were hygiene, nutrition and flavor.

• 대한심미치과학회지
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• 제24권1호
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• pp.25-38
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• 2015

치과계에서 캐드캠이 보급되면서 본격적으로 사용한 지 15년이 넘었다. 코핑 정도의 역할에서 구치부 전부관으로 확대되었고, 최근에는 전치부에서도 많이 사용하는 추세이다. 장비의 발전도 비약적이었지만 지르코니아 블록의 발전이 가장 많이 이루어졌다. 개개인의 능력이나 경험 차에 의해 차이는 있을 수 있겠지만, 도재를 올리지 않고 지르코니아에 컬러링만으로도 얼마든지 색을 표현 할 수 있다. 또한 캐드 디자인 만으로도 표면의 질감을 표현하는 것에 우리가 알고 있는 만큼 가능하다. 본 논문에서는 이러한 디지털 치과학의 변천과정을 정리해 보고자 한다.