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Novas tecnologias para próteses provisórias fixas, comparação entre impressão tridimensional e fresagem: revisão narrativa
| Name: | Description: | Size: | Format: | |
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| 39676 | 447.47 KB | Adobe PDF |
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Abstract(s)
O fluxo digital permite a otimização dos procedimentos necessários para realizar um tratamento protético utilizando ferramentas digitais. Os scanners intraorais produzem arquivos digitais, lidos por software computer-aided design e convertidos em objetos físicos por instrumentos computer-aided manufacturing. Estes sistemas trabalham através de um processo subtrativo e produzem o objeto por fresagem, a partir de um bloco pré-fabricado do material desejado. O mesmo software é capaz de interagir com ferramentas de produção com operação oposta, aditivo por camadas sendo este o princípio da impressão tridimensional.
O objetivo deste trabalho foi, através de uma revisão narrativa da literatura recente, comparar as propriedades mecânicas, propriedades físicas e precisão (adaptação marginal e interna) das próteses fixas provisórias obtidas através de fresagem e impressão tridimensional.
Em conclusão, as próteses provisórias fixas impressas tridimensionalmente podem ser consideradas uma alternativa válida às obtidas por fresagem, sendo promissora a sua utilização mais ampla num futuro próximo.
The digital flow allows the optimization of the procedures necessary to perform a prosthetic treatment using digital tools. Intraoral scanners produce digital files, read by computer-aided design software and converted into physical objects by computer-aided manufacturing instruments. These systems work through a subtractive process and produce the object by milling, from a prefabricated block of the desired material. The same software is capable of interacting with production tools with the opposite operation, additive by layers, which is the principle of three-dimensional printing. The objective of this work was, through a narrative review of the recent literature, to compare the mechanical properties, physical properties and accuracy (marginal and internal adaptation) of temporary fixed prostheses obtained through milling and three-dimensional printing. In conclusion, three-dimensionally printed fixed provisional prostheses can be considered a valid alternative to those obtained by milling, and their wider use is promising in the near future.
The digital flow allows the optimization of the procedures necessary to perform a prosthetic treatment using digital tools. Intraoral scanners produce digital files, read by computer-aided design software and converted into physical objects by computer-aided manufacturing instruments. These systems work through a subtractive process and produce the object by milling, from a prefabricated block of the desired material. The same software is capable of interacting with production tools with the opposite operation, additive by layers, which is the principle of three-dimensional printing. The objective of this work was, through a narrative review of the recent literature, to compare the mechanical properties, physical properties and accuracy (marginal and internal adaptation) of temporary fixed prostheses obtained through milling and three-dimensional printing. In conclusion, three-dimensionally printed fixed provisional prostheses can be considered a valid alternative to those obtained by milling, and their wider use is promising in the near future.
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Keywords
Próteses fixas provisórias Desenho assistido por computador/ fabrico assistido por computador Fresagem Impressão tridimensional Arquivos STL Provisional fixed prostheses Computer-aided design/computer-aided manufacturing (CAD/CAM) Milling 3D printing STL files