• 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.

• Archives of Plastic Surgery
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• 제50권6호
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• pp.563-567
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• 2023

Ear keloids are challenging lesions to treat due to high recurrence rates postexcision. Conservative compression techniques as adjunct treatment have been reported to be effective. An innovative technique of using computer-aided design/computed-aided manufacturing to print a customized auricular splint improves efficiency and comfort level for patients compared with conventional methods. The ear is scanned using an intraoral scanning 2 weeks postsurgery. A two-piece auricular splint is designed on the digital model, incorporating perforated projections for three nylon screws for retention of the splint. The splint is printed with clear acrylic material, postprocessed, and finished. The patient is taught to assemble the components of the splint and instructed to wear for at least 8 hours daily. The surgery site reviewed for any ulceration, pain, or recurrence of keloid for 6 months. During the 6-month review, the excision scar remained flat and pink. The patient also reports unrestricted daily activities. The digital workflow increases comfort for the patient and reduces the number of hours required to produce a customized auricular splint compared with conventional methods. A fully digital workflow for a printed auricular splint should be considered for adjunctive treatment to excision of ear keloids.

• 한국정보전자통신기술학회논문지
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• 제12권5호
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• pp.475-481
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• 2019

스플린트는 마비, 구축 등이 나타난 환측에 적용하는 대표적인 보조기로서 전통적으로 숙련된 전문가의 수작업을 통해 제작된다. 제작과정은 열가소성 소재를 가열한 후 부드러워진 소재를 환측 부위에 접촉하며 해당 부위의 표면에 피팅시키는 과정을 반복하여 이루어진다. 이러한 전통적 방식은 저온화상의 위험, 제작자의 숙련도에 따른 완성도의 차이 등 여러 문제점을 가지고 있다. 이러한 단점을 보완하기 위하여 3D 프린팅 기술을 이용한 다양한 접근이 시도되고 있으나 3D 스캐너를 이용하는 경우 고비용의 문제, 수작업 측정의 경우 정확도의 문제 등의 단점을 나타내고 있다. 본 연구는 인체의 좌우 대칭성에 착안하여 건측 아래팔의 기하 특징을 이용하여 환측 스플린트를 3D 프린팅 기술로 제작하는 가능성에 관한 사전 연구이다. 디지털 사진과 사진측량기법을 이용하여 건강한 성인 남성으로부터 양측 아래팔의 3차원 가상 모델을 생성하고, 매 20mm 위치마다 둘레 길이 및 단면적을 측정하였다. 동일한 피험자네서 우세측과 비우세측 사이의 둘레 길이 및 단면적은 허용할 만한 수준의 차이를 나타냈으며, 우세측과 비우세측 사이에서 동일한 변수들 간에 높은 수준의 양의 상관관계를 나타냈다. 이러한 결과로부터 건측 아래팔의 기하 특징을 이용하여 3D 프린팅 기술의 적용을 통해 환측 스플린트 제작 가능성을 확인하였다.

• 한국기계가공학회지
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• 제18권2호
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• pp.1-6
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• 2019

With the increase in number of the athletic population and elderly demographic, the demand for orthopedic splints, which are used to support a damaged body, has rapidly increased. Current splints mainly consist of inner and outer parts, which are multiple fabrics covered with polyurethane and nonwoven fabrics, respectively. However, the laminated materials with directly applied pre-polymer coating lead to a high defect rate because of the uneven thickness on the surface. Thus, this study proposes an indirect coating method using a precise clearance controller, which enables the even application of the coating material on multiple inner parts while maintaining a constant thickness. In addition, a roll-to-roll (R2R) technique is applied instead of the sewing mechanism to bond the inner and outer materials together and enhance the productivity in the final stage. In the advanced methods, there is a storage tank that contains polyurethane, a clearance controller, and pairs of rollers in the upper and lower rows. To improve the quality of the products and optimize the equipment, three controllable factors are determined: the viscosity of polyurethane, angle of the gap controller and number of pairs of rollers in the R2R system.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.4.1-4.6
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• 2016

Background: Most cases of facial asymmetry involve yaw deformity, and determination of the yaw correction level is very difficult. Methods: We use three-dimensional soft tissue simulation to determine the yaw correction level. This three-dimensional simulation is based on the addition of cephalometric prediction to gradual yaw correction. Optimal yaw correction is determined visually, and an intermediate splint is fabricated with computer-aided design and computer-aided manufacturing. Application of positioning devices and the performance of horseshoe osteotomy are advisable. Results: With this procedure, accurate repositioning of jaws was confirmed and patients obtained fairly good facial contour. Conclusions: This procedure is a promising method for a widespread, predictable treatment of facial asymmetry.