scholarly journals All-ceramic Computer-aided Design and Computer-aided Manufacturing Restorations: Evolution of Structures and Criteria for Clinical Application

2019 ◽  
Vol 20 (4) ◽  
pp. 516-523 ◽  
Author(s):  
Joseph Makzoume ◽  
Elie Nasr ◽  
Anne-Christelle Makhlouf ◽  
Elie Zebouni
Keyword(s):  
Clinical Application ◽  
Computer Aided Design ◽  
Computer Aided Manufacturing ◽  
All Ceramic ◽  
Computer Aided ◽  
Aided Design

scholarly journals The 7/8 Crown: A Lost Art

2012 ◽  
Vol 37 (5) ◽  
pp. 453-457 ◽  
Author(s):  
ST McGill ◽  
JR Holmes
Keyword(s):  
Computer Aided Design ◽  
Ceramic Materials ◽  
High Price ◽  
Computer Aided Manufacturing ◽  
Bonding Agents ◽  
All Ceramic ◽  
Computer Aided ◽  
Aided Design ◽  
Dental Schools

SUMMARY Historically, the longevity of teeth restored with gold inlays, onlays, crowns, and partial veneer restorations is excellent. However, in-office computer-aided design and computer-aided manufacturing restorations, laboratory-constructed all-ceramic bonded restorations, and conventional ceramo-metal restorations are more common. The high price of gold, the difficulty of the preparation, and the fact that most dental schools are de-emphasizing the teaching of partial veneer restorations has created a situation whereby the 7/8 crown is rarely viewed as the treatment of choice. Time and experience will determine if the new ceramic materials, along with the all-important bonding agents, can achieve the success of a well-done, all-gold restoration.

scholarly journals Effects of Computer-Aided Manufacturing Technology on Precision of Clinical Metal-Free Restorations

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Ki-Hong Lee ◽  
In-Sung Yeo ◽  
Benjamin M. Wu ◽  
Jae-Ho Yang ◽  
Jung-Suk Han ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Computer Aided Manufacturing ◽  
Marginal Fit ◽  
Significance Level ◽  
Metal Free ◽  
All Ceramic ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Cam Systems

Purpose. The purpose of this study was to investigate the marginal fit of metal-free crowns made by three different computer-aided design/computer-aided manufacturing (CAD/CAM) systems.Materials and Methods. The maxillary left first premolar of a dentiform was prepared for all-ceramic crown restoration. Thirty all-ceramic premolar crowns were made, ten each manufactured by the Lava system, Cercon, and Cerec. Ten metal ceramic gold (MCG) crowns served as control. The marginal gap of each sample was measured under a stereoscopic microscope at 75x magnification after cementation. One-way ANOVA and the Duncan’s post hoc test were used for data analysis at the significance level of 0.05.Results. The mean (standard deviation) marginal gaps were 70.5 (34.4) μm for the MCG crowns, 87.2 (22.8) μm for Lava, 58.5 (17.6) μm for Cercon, and 72.3 (30.8) μm for Cerec. There were no significant differences in the marginal fit among the groups except that the Cercon crowns had significantly smaller marginal gaps than the Lava crowns(P<0.001).  Conclusions. Within the limitation of this study, all the metal-free restorations made by the digital CAD/CAM systems had clinically acceptable marginal accuracy.

scholarly journals Dual-scan technique for the customization of zirconia computer-aided design/computer-aided manufacturing frameworks

2013 ◽  
Vol 07 (S 01) ◽  
pp. S115-S118 ◽  
Author(s):  
Rafael Ferrone Andreiuolo ◽  
Carlos Eduardo Sabrosa ◽  
Katia Regina H. Cervantes Dias
Keyword(s):  
Computer Aided Design ◽  
Uniform Thickness ◽  
Simple Manner ◽  
Computer Aided Manufacturing ◽  
All Ceramic ◽  
Computer Aided ◽  
Cad Cam ◽  
Ceramic Crowns ◽  
Tooth Preparation ◽  
Aided Design

ABSTRACTThe use of bi-layered all-ceramic crowns has continuously grown since the introduction of computer-aided design/computer-aided manufacturing (CAD/CAM) zirconia cores. Unfortunately, despite the outstanding mechanical properties of zirconia, problems related to porcelain cracking or chipping remain. One of the reasons for this is that ceramic copings are usually milled to uniform thicknesses of 0.3-0.6 mm around the whole tooth preparation. This may not provide uniform thickness or appropriate support for the veneering porcelain. To prevent these problems, the dual-scan technique demonstrates an alternative that allows the restorative team to customize zirconia CAD/CAM frameworks with adequate porcelain thickness and support in a simple manner.

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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