scholarly journals Effects of the use of conventional versus computer-aided design/computer-aided manufacturing sockets on clinical characteristics and quality of life of transfemoral amputees

2019 ◽  
Author(s):  
Abdulkadir Aydın
Keyword(s):  
Quality Of Life ◽  
Computer Aided Design ◽  
Clinical Characteristics ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Transfemoral Amputees ◽  
Aided Design

scholarly journals Standard vs computer-aided design/computer-aided manufacturing customized self-ligating systems using indirect bonding with both:

2020 ◽  
Vol 91 (1) ◽  
pp. 74-80
Author(s):  
Nastasia Jackers ◽  
Nathalie Maes ◽  
France Lambert ◽  
Adelin Albert ◽  
Carole Charavet
Keyword(s):  
Computer Aided Design ◽  
Comparative Trial ◽  
Fine Tuning ◽  
Computer Aided Manufacturing ◽  
Indirect Bonding ◽  
Patient Reported ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

ABSTRACT Objective To compare treatment duration and quality between standard vs computer-aided design/computer-aided manufacturing (CAD/CAM) customized self-ligating systems using indirect bonding with both. Materials and Methods This comparative trial included 24 patients: 12 treated with a CAD/CAM custom indirect bonding self-ligating system (CAD/CAM) and 12 others treated with an indirect bonding self-ligating standard system (I-STD). For each group, overall orthodontic treatment (OT) time was calculated and included the time needed to place each arch as well as the duration of the alignment and fine-tuning phases. The quality of the final result was analyzed using the American Board of Orthodontics Cast-Radiograph Evaluation. Patient-reported outcome measures (PROMs) were also evaluated. Results Patient characteristics were similar between the 2 groups except for age, which was slightly lower in the I-SDT group. Overall OT time was increased by 26% in the I-STD group compared with the CAD/CAM group (497 ± 40 days vs 393 ± 55 days, P = 0.0002) due to a shorter fine-tuning phase in the latter group (P<0.01). No difference was found between the groups for alignment phase. Quality of the final result was similar (I-STD, 25.7 ± 6.1; CAD/CAM, 21.6 ± 6.3) among the groups. Finally, no difference was found in the PROMs variables. Conclusions Despite a 26% longer OT time when compared with the CAD/CAM customized bracket system, the indirect bonding self-ligating bracket system demonstrated the same quality of treatment. PROMs demonstrated a high level of acceptance and satisfaction for both techniques.

Quantification of rectifications for the Northwestern University Flexible Sub-Ischial Vacuum Socket

2017 ◽  
Vol 41 (3) ◽  
pp. 251-257 ◽  
Author(s):  
Stefania Fatone ◽  
William Brett Johnson ◽  
Lilly Tran ◽  
Kerice Tucker ◽  
Christofer Mowrer ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Shape Change ◽  
Tissue Type ◽  
Transfemoral Amputation ◽  
Computer Aided Manufacturing ◽  
Prosthetic Socket ◽  
Northwestern University ◽  
Computer Aided ◽  
Aided Design

Background:The fit and function of a prosthetic socket depend on the prosthetist’s ability to design the socket’s shape to distribute load comfortably over the residual limb. We recently developed a sub-ischial socket for persons with transfemoral amputation: the Northwestern University Flexible Sub-Ischial Vacuum Socket.Objective:This study aimed to quantify the rectifications required to fit the Northwestern University Flexible Sub-Ischial Vacuum Socket to teach the technique to prosthetists as well as provide a computer-aided design–computer-aided manufacturing option.Study Design:Development project.Methods:A program was used to align scans of unrectified and rectified negative molds and calculate shape change as a result of rectification. Averaged rectifications were used to create a socket template, which was shared with a central fabrication facility engaged in provision of Northwestern University Flexible Sub-Ischial Vacuum Sockets to early clinical adopters. Feedback regarding quality of fitting was obtained.Results:Rectification maps created from 30 cast pairs of successfully fit Northwestern University Flexible Sub-Ischial Vacuum Sockets confirmed that material was primarily removed from the positive mold in the proximal-lateral and posterior regions. The template was used to fabricate check sockets for 15 persons with transfemoral amputation. Feedback suggested that the template provided a reasonable initial fit with only minor adjustments.Conclusion:Rectification maps and template were used to facilitate teaching and central fabrication of the Northwestern University Flexible Sub-Ischial Vacuum Socket. Minor issues with quality of initial fit achieved with the template may be due to inability to adjust the template to patient characteristics (e.g. tissue type, limb shape) and/or the degree to which it represented a fully mature version of the technique.Clinical relevanceRectification maps help communicate an important step in the fabrication of the Northwestern University Flexible Sub-Ischial Vacuum Socket facilitating dissemination of the technique, while the average template provides an alternative fabrication option via computer-aided design–computer-aided manufacturing and central fabrication.

scholarly journals Influence of Sequential CAD/CAM Milling on the Fitting Accuracy of Titanium Three-Unit Fixed Dental Prostheses

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1401
Author(s):  
Doo-Bin Song ◽  
Man-So Han ◽  
Si-Chul Kim ◽  
Junyong Ahn ◽  
Yong-Woon Im ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Computer Aided Design ◽  
Dental Prostheses ◽  
Computer Aided ◽  
Cad Cam ◽  
Fixed Dental Prostheses ◽  
Gap Data ◽  
Aided Design ◽  
Fitting Accuracy

This study investigated the fitting accuracy of titanium alloy fixed dental prostheses (FDP) after sequential CAD/CAM (Computer Aided Design/Computer Aided Manufacturing) fabrication. A three-unit FDP model connecting mandibular second premolars and molars was prepared and scanned to fabricate titanium FDPs by CAD/CAM milling. A total of six FDPs were sequentially milled in one titanium alloy disk using a new set of burs every time (n = 4). The fitting accuracy of FDPs was mesiodistally evaluated by a silicone replica technique and the measurement was triplicated at four different locations: MO (marginal opening), MG (marginal gap), AG (axial gap), and OG (occlusal gap). Data were statistically analyzed using ANOVA and Tukey’s HSD test. The fitting accuracy of PMMA (polymethyl methacrylate) FDPs milled using the worn or new bur were evaluated by the same procedure (n = 6). The mean dimensions of titanium FDP for all measuring positions, except for AG, were significantly increased from the third milling. However, no difference was noted between the first FDP and the second FDP milled with the same set of burs. Severe edge chippings were observed in all milling burs. Detrimental effects of the worn burs on the fitting accuracy were demonstrated in the CAD/CAM-milled PMMA FDP. The results recommend proper changing frequency of cutting burs to achieve the quality of fit and predictable outcomes for dental CAD/CAM prostheses.

scholarly journals Um experimento de fabricação digital: parametrização, prototipagem e fabricação de painel.

2017 ◽  
Vol 1 (1) ◽  
pp. 81
Author(s):  
Jorge Alcântara Filho ◽  
Letícia Mendes
Keyword(s):  
Computer Aided Design ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Aided Design

consistentes e cada vez mais presentes nos campos de design e construção. A presença cada vez mais significativa dos sistemas de representação e fabricação com auxílio de computador (Computer Aided Design e Computer Aided Manufacturing) na concepção dos mais variados artefatos, tem sido um assunto muito discutido nos diversos campos da indústria criativa. Paralelamente à esta discussão, a introdução da abordagem projetual paramétrica tem uma grande importância na obtenção de novas perspectivas e inovação no design. Dessa forma, com o intuito de associar o potencial das ferramentas de prototipagem rápida e fabricação digital e de um sistema generativo de projeto, este artigo descreve o desenvolvimento de um projeto de mobiliário – um painel para exposição de objetos e organizador de ferramentas - através da documentação detalhada dos processos e procedimentos realizados para sua conclusão e desdobramentos acerca da mudança de paradigma no processo de projeto, condizente com a potencialidade dos recursos digitais. O texto do resumo deve ser escrito em Cambria tamanho 10, justificado, espaçamento simples, antes 0, depois 0. Deve possuir no máximo 200 palavras. O texto deve ser escrito em um único parágrafo e conter as informações principais do artigo como objetivos, resultados, métodos, etc.

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