• Journal of Oral Medicine and Pain
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• 제44권2호
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• pp.74-76
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• 2019

A conservative treatment approach to temporomandibular disorder (TMD) is recommended as the first line of management, usually with a stabilization splint. Recently, computer-aided design/computer-aided manufacturing and three-dimensional printer has been widely used in the dentistry since several years ago. The authors apply digital dentistry in oral medicine fields to make stabilization splint for TMD treatment.

• 대한치과의사협회지
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• 제57권3호
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• pp.169-174
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• 2019

The rapid evolution of CAD/CAM (Computer Aided Design / Computer Aided Manufacture) led to a dramatic impact on all disciplines of dentistry especially in the fields of prosthodontics and restorative dentistry. This article is to examine the history, advantages & disadvantages and some clinical considerations of CAD/CAM restoration.

• 대한치과의사협회지
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• 제50권3호
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• pp.110-117
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• 2012

Dental computer-aided design (CAD) and computer-aided manufacturing (CAM) technology have rapidly progressed over the past 30 years. The technology, which can be used in the dental laboratory, the dental office and the form of production centers, has become more common in recent years. This technology is now applied to inlays, onlays, crowns, fixed partial dentures, removable partial denture frameworks, complete dentures, templates for implant installation, implant abutments, and even maxillofacial prostheses. Dentists and dental technicians, who want to use these techniques, should have certain basic knowledge about that. This article gives an overview of CAD/CAM technologies, histories and how it applies in prosthetic dentistry.

• Journal of Korean Dental Science
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• 제8권1호
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• pp.41-47
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• 2015

Even though a conventional metal ceramic restoration is widely in use, its laboratory procedure is still technique-sensitive, complex, and time-consuming. A ceramic-pressed-to-metal restoration (PTM) can be a reliable alternative. However, simplified laboratory procedure for a PTM is still necessary. The article is to propose a technique that reduces time and effort to fabricate a PTM with the aid of computer-aided design, computer-aided manufacturing and selective laser sintering technologies.

• 구강회복응용과학지
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• 제32권2호
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• pp.141-148
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• 2016

Computer-aided technology는 최근 치과 치료의 흐름이다. DENTCA$^{TM}$ CAD/CAM denture (DENTCA Inc.)는 상용화된 computer-aided design/computer-aided manufacturing (CAD/CAM) 의치 시스템 중 하나로, 한 번의 내원을 통해 의치 제작에 필요한 환자의 모든 정보를 획득하여, 이 정보를 컴퓨터에 저장하고 3D 프린팅을 통해 두 번째 내원 시에 의치 장착을 목표로 한다. 현재까지 여러 증례들은 총의치 제작에 대한 CAD/CAM system의 임상적 적용을 시험해 보았다. 본 증례는 두 명의 환자에서 DENTCA system을 이용한 의치와 전통적인 방법을 이용한 의치를 동시에 제작하여 DENTCA system의 효용성과 한계점을 고찰하였다.

• 대한치과기공학회지
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• 제43권4호
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• pp.202-209
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• 2021

By classifying temporary denture production for surgical guides, digital guide-based surgery, and final prosthesis production, the problems of each process were assessed in advance and the factors that could be improved were confirmed in this study. The manufacturing process of fusion dental prosthesis uses virtual programs and computed tomography images to manufacture devices using the latest technologies of computer-aided design/computer-aided manufacturing and three-dimensional printing, which enables implants to be placed in the desired location in advance. Moreover, implant placement is not dependent on the skill and condition of the dentist, and because it uses a computer system, it can always be performed at a constant and optimal position. This can reduce the remanufacturing rate compared with the general method, shorten the treatment period, and eliminate patient discomfort. Unlike the traditional method of using impression materials and plaster models, digital fusion dental prostheses would be evaluated as a technology for producing prosthesis through professional design technology and communication.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.2.1-2.9
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• 2016

Background: We reviewed the biological and mechanical properties of porous hydroxyapatite (HA) compared to other synthetic materials. Computer-aided design/computer-aided manufacturing (CAD/CAM) was also evaluated to estimate its efficacy with clinical and radiological assessments. Method: A systematic search of the electronic literature database of the National Library of Medicine (PubMed-MEDLINE) was performed for articles published in English between January 1985 and September 2013. The inclusion criteria were (1) histological evaluation of the biocompatibility and osteoconductivity of porous HA in vivo and in vitro, (2) evaluation of the mechanical properties of HA in relation to its porosity, (3) comparison of the biological and mechanical properties between several biomaterials, and (4) clinical and radiological evaluation of the precision of CAD/CAM techniques. Results: HA had excellent osteoconductivity and biocompatibility in vitro and in vivo compared to other biomaterials. HA grafts are suitable for milling and finishing, depending on the design. In computed tomography, porous HA is a more resorbable and more osteoconductive material than dense HA; however, its strength decreases exponentially with an increase in porosity. Conclusions: Mechanical tests showed that HA scaffolds with pore diameters ranging from 400 to $1200{\mu}m$ had compressive moduli and strength within the range of the human craniofacial trabecular bone. In conclusion, using CAD/CAM techniques for preparing HA scaffolds may increase graft stability and reduce surgical operating time.

• 대한치과보철학회지
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• 제55권4호
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• pp.436-443
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• 2017

과거의 computer-aided design/computer-aided manufacturing (CAD/CAM) 기술 형태는 사용자가 한 제조사의 구성요소만 사용해야 하는 폐쇄적인 시스템이었다면, 현재는 여러 제조사의 구성요소 중 사용자가 필요에 맞는 구성요소를 선택해서 사용할 수 있는 유연성을 가진 개방적인 시스템 형태로 변화하였다. 치과재료와 보철물 제작 기술의 발전에도 불구하고 의치 제작은 지난 100년 가까이 전통적인 제작방식을 따랐다. 하지만 최근 들어 기존 의치 제작의 단점을 보완하고자 CAD/CAM 제작 의치에 관한 연구가 활발히 이루어지고 있으며, 밀링이나 3D 프린팅을 이용해 상용화된 형태의 CAD/CAM 제작 의치가 이미 임상에서 쓰이고 있다. 본 증례는 3D face scan을 활용한 CAD/CAM 의치 제작의 가능성을 확인하고, CAD/CAM과 전통적인 방법으로 제작한 의치를 비교한 결과에 대해 보고하고자 한다.

• 대한치과의사협회지
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• 제52권6호
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• pp.332-345
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• 2014

In recent years, precision machining of the dental prosthesis by computer assisted system is becoming pervasive in clinical dentistry. Prosthesis fabricating system that is designed by computer software and made by computer devices is called as a CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) system. By the use of dental CAD/CAM system, the improvement of marginal compatibility and mechanical properties in prosthesis can be obtained more effectively, an aesthetic quality by using new materials such as zirconia can be increased. Also, the restoration process can be simple and efficient, the production time can be shortened, the process of manufacture can be standardized, and the mass production is possible. What is clear is that these benefits are theoretically possible, but the dentist or dental technician must understand the CAD/CAM basic principles and limitations for obtaining the maximum advantages of CAD/CAM system. For this reason, this article will be presented about the basic principles of CAD/CAM system and the factors of error that might occur in the CAD/CAM process based on my empirical study.

• 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.