Radiopacity of computer‐aided design/computer‐aided manufacturing composite resin blocks

2020 ◽  
Vol 128 (3) ◽  
pp. 241-245
Author(s):  
Hiroyasu Koizumi ◽  
Kentaro Okamura ◽  
Haruto Hiraba ◽  
Akihisa Kodaira ◽  
Takayuki Yoneyama ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Composite Resin ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Aided Design

Leaching behaviors of computer-aided design/computer-aided manufacturing composite resin component elements immersed in water

2019 ◽  
Vol 63 (2) ◽  
pp. 221-226 ◽  
Author(s):  
Junji Iwata ◽  
Masaki Asakura ◽  
Tatsuhide Hayashi ◽  
Shozo Tsuruta ◽  
Miki Hori ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Composite Resin ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Aided Design

scholarly journals Fracture resistance of computer-aided design/computer-aided manufacturing-generated composite resin-based molar crowns

2015 ◽  
Vol 123 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Akio Harada ◽  
Keisuke Nakamura ◽  
Taro Kanno ◽  
Ryoichi Inagaki ◽  
Ulf Örtengren ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Aided Design

Influence of Computer-aided Design/Computer-aided Manufacturing Diamond Bur Wear on Marginal Misfit of Two Lithium Disilicate Ceramic Systems

2019 ◽  
Vol 45 (4) ◽  
pp. 416-425
Author(s):  
LH Raposo ◽  
PS Borella ◽  
DC Ferraz ◽  
LM Pereira ◽  
MS Prudente ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Composite Resin ◽  
Lithium Disilicate ◽  
Computer Aided Manufacturing ◽  
Diamond Bur ◽  
Significant Difference ◽  
Computer Aided ◽  
Cad Cam ◽  
Ceramic Crowns ◽  
Aided Design

Clinical Relevance Marginal misfit of monolithic lithium disilicate ceramic crowns obtained from a chairside computer-aided design/computer-aided manufacturing system is affected after successive millings using a single diamond bur set. This fact can be critical for the longevity of indirect restorations. SUMMARY Objectives: This laboratory study aimed to assess the effect of successive crown millings on the marginal misfit of monolithic full-ceramic restorations obtained from two lithium disilicate systems, with a single diamond bur set used for each material in a chairside computer-aided design/computer-aided manufacturing (CAD/CAM) unit. Methods and Materials: Initially, 36 standardized composite resin dies were produced by additive manufacturing from a three-dimensional model of a right mandibular first molar with full-crown preparation generated in CAD software. Individual ceramic crowns were obtained in a chairside CAD/CAM unit (CEREC MC XL) for each composite resin die according to the ceramic system (IPS e.max CAD and Rosetta SM; n=18). Two new diamond burs were used as a set for obtaining the crowns in each experimental group (ceramic systems), and the milling periods were defined after three crown millings (T0-T6), when the diamond bur set of each system was removed for morphologic characterization using scanning electron microscopy (SEM). The marginal misfit of the crowns was assessed through coronal and sagittal micro-tomographic sectioning, in the vertical and horizontal directions of the ceramic crowns seated on their respective resin dies. The collected data were tabulated and subjected to one-way analysis of variance and Tukey's honestly significant difference test (α=0.05). Results: SEM images showed changes in the superficial morphology of the diamond bur sets, with progressive loss of the diamond granules after the successive millings of crowns for both experimental groups. Significant differences were detected in the marginal misfit of the crowns from both ceramic systems at the different milling periods (p<0.001). Conclusions: Diamond burs deteriorated after successive crown millings for both lithium disilicate ceramic systems. The marginal misfit of the crowns obtained increased with the successive use of the CAD/CAM diamond bur set employed for milling each ceramic material. In addition, new milling of full lithium disilicate ceramic crowns can be inappropriate after 11 successive millings for IPS e.max CAD and 12 for Rosetta SM, due to the increased marginal misfit observed under the parameters tested.

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.

Sign in / Sign up

Export Citation Format

Share Document