• Title/Summary/Keyword: Double cam

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The Present Clinical Studies of Oriental Medicine and CAM Therapies in Chemotherapy-induced Peripheral Neurotoxicity (항암제 유발 신경독성을 관리하는 한의학 및 보완대체요법들과 임상시험 현황)

  • Park, Sun-Ju;Go, Ho-Yeon;Han, Yoo-Jin;Ko, Seong-Gyu;Kim, Sung-Hoon
    • The Korea Journal of Herbology
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    • v.24 no.4
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    • pp.205-213
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    • 2009
  • Objectives : Cancer incidence is increasing in all countries and chemotherapy-induced peripheral neuropathy (CIPN) in patients undergoing chemotherapeutic agents have been a clinically serious problems. So far therapeutic options for CIPN patients are limited and no confirmed methods have yet been established for dealing with peripheral neuropathy. Therefore this review is to provide an evidence-based summary of oriental medicine and CAM (complementary and alternative medicine) neuroprotective and treatment therapies which have gone through clinical trials. Methods : An overview of the domestic and international papers of adult clinical trials relating management of only CIPN symptoms through 1990 to present were searched by electronic databases. Search key words were chemotherapy-induced neurotoxicity, chemotherapy-induced peripheral neuropathy, chemotherapy toxicity & herb, chemotherapy toxicity & acupuncture, chemotherapy toxicity & CAM. Only English and Korean written papers were reviewed. Total 25 papers were reviewed in this study, 18 papers were retrieved by electronic search. Results : Clinical studies of managing CIPN were rare, two acupuncture clinical studies and four herb medicinal studies were found. Rest of 19 papers were about other CAM clinical studies. Total 25 papers were analyzed, and all interventions were focused on their pain control efficacy. Other 24 trials of potential therapies except one proved to be effective for CIPN, however some described to be inadequate positive or sufficient negative. Conclusions : As most of the studies were pilot studies, interventions for the prevention and treatment of CIPN have to go through prospective confirmatory studies, such as larger scale randomized, double-blinded, placebo controlled clinical trials must be done for the safe and effective use of proposed therapies. Also standard measurement scales have to be developed for the better clinical study of CIPN.

Rehabilitation in a patient with limited restorable space using double scanning technique: A case report (구치부 보철 수복 공간이 부족한 환자에서 이중 스캔을 이용한 구강회복 증례)

  • Kim, Jun-Yub;Park, Sang-Won;Lim, Hyun-Pil;Yun, Kwi-Dug;Yang, Hongso
    • The Journal of Korean Academy of Prosthodontics
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    • v.55 no.2
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    • pp.205-211
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    • 2017
  • Loss of posterior support may cause extrusion of antagonistic teeth and excessive wear of remaining teeth which often leads to the destruction of the occlusal plane. In such cases, it is critical to verify the need to increase vertical dimension of occlusion (VDO). Should you increase VDO, provisionalization is crucial in evaluating function and esthetics. Double scanning technique is a useful method when fabricating definitive restoration that mimic provisional restoration. In this case, a patient with apparently no loss of VDO and insufficient interocclusal space for dental materials due to loss of posterior support and extrusion of antagonistic teeth was rehabilitated using double scanning technique.

Full mouth rehabilitation in a patient with reduced vertical dimension due to numerous tooth loss and excessie worn dentition: A case report (다수의 치아 상실과 치아 마모로 인해 수직고경이 감소된 환자의 완전 구강 회복 증례)

  • Lee, Eun-Hyuk;Lim, Young-Jun;Kwon, Ho-Beom;Kim, Myung-Joo
    • The Journal of Korean Academy of Prosthodontics
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    • v.57 no.4
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    • pp.456-466
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    • 2019
  • As digital dentistry technology is being developed, it is being used in various ways. This case covers how digital dentistry technology is being applied on the treatment of patients with loss of vertical dimension due to worn dentition and multiple loss of teeth. The loss of vertical dimension was carefully assessed and recovered, and implants were placed with surgical guides, designed considering the final restoration. The movement of the mandibular was measured with the electronic instrument for recording mandibular movement. Wax-up process was done with Naturgemäße Aufwachs-Technik (N.A.T.) and Natural functional reconstruction (N.F.R.). It was scanned, and the provisional restoration was fabricated using Computer-Aided-Design/Computer-Aided-Manufacturing (CAD/CAM) technology, and the adjustment process was done at the clinic to meet with the satisfaction both functionally and esthetically, and then, using double scanning and CAD/CAM technology, it was carried out as a final restoration. As a result, the patient obtained satisfying results, utilizing the benefits of digital dentistry technology and traditional methods.

Computer-aided design and manufacturing-based full mouth rehabilitation for a patient with excessive attrition and restricted vertical dimension: A case report (심한 치아 마모와 수복 공간 부족을 보이는 환자에서 CAD/CAM 기술을 활용한 완전 구강 회복: 증례 보고)

  • Cho, Jun-Ho;Yoon, Hyung-In;Yeo, In-Sung;Han, Jung-Suk
    • The Journal of Korean Academy of Prosthodontics
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    • v.57 no.4
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    • pp.495-505
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    • 2019
  • This study reported the treatment of a patient with excessive worn dentition and limited maxillo-mandibular space for restoration, utilizing the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. After the thorough examination of the patient's occlusal vertical dimension (OVD), full mouth rehabilitation was planned with increase of the OVD. The patient was satisfied with the provisional restorations establishing the increased OVD. The horizontal and vertical data of the patient's jaw relation that the provisional restorations contained were transferred to the definitive metal ceramic fixed prostheses by double scanning and three-dimensional printing. After the fixed restorations were cemented to the abutments, electronic surveying and three-dimensional printing were used to fabricate metal frameworks for the patient's removable partial dentures. The mandibular definitive removable prostheses were delivered to the patient's mouth and the full mouth rehabilitation procedures were completed. The digital technologies used for this case produced fixed and removable restorations satisfactory in masticatory, phonetic and aesthetic functions to both the patient and the dental clinician.

Aesthetic restoration n patients with unaesthetic maxillary anterior teeth using double scan : A case report (비심미적인 상악 전치부 환자에서 이중 스캔을 이용한 심미보철 수복 증례)

  • Ko, Chang Woo;Kim, Min-Ji;Yang, Hong-So;Park, Sang-Won;Park, Chan;Yun, Kwi-Dug
    • The Journal of Korean Academy of Prosthodontics
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    • v.56 no.2
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    • pp.166-172
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    • 2018
  • In case of the treatment of maxillary anterior teeth, it should be taken into account the proper morphology, arrangement and color satisfying patient's esthetic demands. For this purpose, facial composition, dentofacial composition, dental composition and dentogingival composition should be considered making diagnosis and treatment plan in an esthetic point of view. In adjustable temporary crown state, careful evaluation and correction of the esthetic and functional aspect were performed, and the definite restoration was reproduced using double scan.

Acquisition and Processing of 3D Data (3차원 데이터의 획득 및 가공)

  • Kim A.H.;Kim Y.S.;Bae C.;Kang W.C.;Kim Y.D.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.286-290
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    • 2003
  • Accurate acquisition of surface geometries such as machined surfaces, biological surfaces, and deformed parts have been very important technique in scientific study and engineering, expecially for system design, manufacturing and inspection. Two camera method keeps accuracy more than double than mechanical method. In this paper, we describe the processes surface data of teeth for automatic processing, transformation that changes to coping data of possible numeric data form and processed inlay teeth. As the result of the Inlay manufacture, which can process with high resolution, therefore we construct the automatic processing system that depends on manual

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3D Processing System of Tooth shape (치형 3차원 가공시스템)

  • Kim, Young-Su;Kim, Nam-Oh;Min, Wan-Ki;Shin, Suck-Doo;Kang, Won-Can;Kim, Young-Dong
    • Proceedings of the KIEE Conference
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    • 2003.07e
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    • pp.120-123
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    • 2003
  • Accurate acquisition of surface geometries such as machined surfaces, biological surfaces, and deformed parts have been very important technique in scientific study and engineering, expecially for system design, manufacturing and inspection. Two camera method keeps accuracy more than double than mechanical method. In this paper, we describe the processes surface data of teeth for automatic processing, transformation that changes to coping data of possible numeric data form, and processed inlay teeth. As the result of the Inlay manufacture, which can process with high resolution, therefore we construct the automatic processing system that depends on manual.

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3D Deinterlacing Algorithm Based on Wide Sparse Vector Correlations

  • Kim, Yeong-Taeg
    • Journal of Broadcast Engineering
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    • v.1 no.1
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    • pp.44-54
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    • 1996
  • In this paper, we propose a new 3-D deinterlacing algorithm based on wide sparse vector correlations and a vertical edge based motion detection algorithm. which is an extension of the deinterlacing algorithm proposed in [10. llJ by the authors. The prooised algorithm is developed mainly for the format conversion problem encountered in current HDTV system, but can also be aplicable to the double scan conversion problesm frequently encountered in ths NTSC systems. By exploiting the edge oriented spatial interpolation based on the wide vector correlations, visually annoying artifiacts caused by interlacing such as a serrate line. line crawling, a line flicker, and a large area flicker can be remarkably reduced since the use of the wide vectors increases the range of the edge orientations that can be detected, and by exploiting sparse vectors correlations the HjW complexity for realizing the algorithm in applications cam be significantly simplified. Simulations are provided indicating thet the proposed algorithm results in a high performance comparable to the performance of the deinterlacing algorithm. based on the wide vector correlations.

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Artificial neural network modeling to predict the flexural behavior of RC beams retrofitted with CFRP modified with carbon nanotubes

  • Almashaqbeh, Hashem K.;Irshidat, Mohammad R.;Najjar, Yacoub;Elmahmoud, Weam
    • Computers and Concrete
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    • v.30 no.3
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    • pp.209-224
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    • 2022
  • In this paper, the artificial neural network (ANN) is employed to predict the flexural behavior of reinforced concrete (RC) beams retrofitted with carbon fiber/epoxy composites modified by carbon nanotubes (CNTs). Multiple techniques are used to improve the accuracy of the ANN prediction, as the data represents a multivalued function. These techniques include static ANN modeling, ANN modeling with load history, and ANN modeling with double load history. The developed ANN models are used to predict the load-displacement profiles of beams retrofitted with either CFRP or CNTs modified CFRP, flexural capacity, and maximum displacement of the beams. The results demonstrate that the ANN is able to predict the flexural behavior of the retrofitted RC beams as well as the effect of each parameter including the type of the used epoxy and the presence of the CNTs.

Practicality and prospect of full-zirconia restoration (풀지르코니아 수복물의 실용성과 전망)

  • Hwang, Jung-Won
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.24 no.2
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    • pp.101-121
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    • 2015
  • Zirconia polycrystalline (Y-TZP) showed better mechanical properties and superior resistance to fracture than other conventional dental ceramics. Zirconia-based ceramics have been successfully introduced into the clinic to fabricate fixed dental prostheses (FDPs), along with a dental computer-aided/computer-aided manufacturing (CAD/CAM) system. It has been clinically available as an alternative to the metal framework for fixed dental prostheses (FDPs). The most frequent clinical complication with zirconia-based FDPs was chipping of the veneering porcelain that was affected by many factors. Another option was full-contour zirconia FDPs using high translucent zirconia. Full-contour zirconia FDPs has many clinical advantages but it caused concern about the wear of antagonist enamel, because the hardness of Y-TZP was over double that of porcelain. However, many articles demonstrates that highly polished zirconia yielded lower antagonist wear compared with porcelains. In this article (1) advantages of full zirconia restorations, (2) clinical applications of zirconia restorations, (3) abutment preparation, (4) surface finish of zirconia restoration and antagonist enamel wear, (5) bond of zirconia with resin-based luting agents, (6) communication in clinical & lab.procedures for full zirconia restorations are reviewed.