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Sistema de instrumentaĆ§Ć£o mecanizada Hyflex EDM
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|---|---|---|---|---|
| PPG_25641 | 232.24 KB | Adobe PDF |
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Abstract(s)
A Endodontia Ć© uma Ć”rea em constante evoluĆ§Ć£o. ConsiderĆ”veis desenvolvimentos nos materiais e tĆ©cnicas tĆŖm sido essenciais para o melhoramento dos resultados nos tratamentos realizados.
Ć exemplo disso mesmo a constituiĆ§Ć£o dos instrumentos EndodĆ“nticos primordiais, construĆdos em cordas de piano, com evoluĆ§Ć£o para aƧo de carbono, material este que sofria corrosĆ£o provocado pelo cloro presente no hipoclorito de sĆ³dio. O aƧo de carbono evoluiu para aƧo inoxidĆ”vel e deste as limas endodĆ“nticas passaram a ser feitas em nĆquel-titĆ¢nio, conferindo-lhes melhor flexibilidade e efeito de memĆ³ria de forma.
Mesmo com todas estas melhorias significativas, fraturas de instrumentos e erros durante a instrumentaĆ§Ć£o continuam a acontecer e com eles veio a necessidade da pesquisa de possĆveis melhorias da constituiĆ§Ć£o das limas em NiTi.
Como resultado surgiram ligas como o M-wire, fase-R e CM-wire, criadas a partir de tratamentos tĆ©rmicos, que trouxeram Ć s limas EndodĆ“nticas maior flexibilidade e resistĆŖncia Ć fratura que os instrumentos feitos em NiTi convencional.
A mais recente evoluĆ§Ć£o das limas Ni-Ti, desenvolvida pela Coltene Whaldent (AllstƤtten, SuiƧa), sĆ£o as limas Hyflex EDM, limas para canais radiculares de 5ĀŖ geraĆ§Ć£o. O seu processo de fabrico por eletroerosĆ£o cria uma superfĆcie Ćŗnica fazendo com que estas limas sejam mais duras e resistam mais Ć quebra, aliado Ć sua alta flexibilidade. Ć possĆvel assim reduzir o nĆŗmero de limas para a limpeza e modelagem dos canais durante os tratamentos endodĆ“nticos sem comprometer a preservaĆ§Ć£o da anatomia dos canais.
As limas Hyflex EDM possuem, tal como as limas Hyflex CM, o efeito de controle de memĆ³ria (CM), o que confere propriedades muito similares entre os dois sistemas.
Considerable research has been taken into Endodontics in order to improve materials and techniques which have been crucial to achieve better results in the performed treatments. Example of that is the constitution of ancient Endodontic instruments, made of piano strings, which evolved to carbon steel, but as corrosion occurred due to chloride present in sodium hypochlorite, there was a new evolution from carbon steel to stainless steel and thus Endodontic files began to be made of titanium nickel offering them greater flexibility and shape memory effects. Even with all these significant improvements, Endodontic instruments fracture and mistakes during instrumentation still occur, so there was the need to research for possible constitution improvements in Ni-Ti files. As a result, alloys such as M-Wire, R- Phase and CM-Wire, created from thermal treatments, appeared and brought more flexibility and fracture resistance to Endodontic files than the instruments made in conventional Ni-Ti. Hyflex EDM files, the first Endodontic instruments manufactured with EDM, for root canal 5th generation are the most recent Ni-Ti files evolution developed by Coltene Whaledent (AllstƤtten, Switzerland). Its manufacturing process by electro erosion creates a single surface enabling these files to be tougher and more resistant to fracture, allied to its greater flexibility. Thus, itĀ“s possible to reduce the number of files for cleaning and shaping of canals during endodontic treatments without compromising the preservation of their autonomy. Hyflex EDM files have, such as Hyflex CM files, memory control (CM) effect, which provides very similar properties between the two systems.
Considerable research has been taken into Endodontics in order to improve materials and techniques which have been crucial to achieve better results in the performed treatments. Example of that is the constitution of ancient Endodontic instruments, made of piano strings, which evolved to carbon steel, but as corrosion occurred due to chloride present in sodium hypochlorite, there was a new evolution from carbon steel to stainless steel and thus Endodontic files began to be made of titanium nickel offering them greater flexibility and shape memory effects. Even with all these significant improvements, Endodontic instruments fracture and mistakes during instrumentation still occur, so there was the need to research for possible constitution improvements in Ni-Ti files. As a result, alloys such as M-Wire, R- Phase and CM-Wire, created from thermal treatments, appeared and brought more flexibility and fracture resistance to Endodontic files than the instruments made in conventional Ni-Ti. Hyflex EDM files, the first Endodontic instruments manufactured with EDM, for root canal 5th generation are the most recent Ni-Ti files evolution developed by Coltene Whaledent (AllstƤtten, Switzerland). Its manufacturing process by electro erosion creates a single surface enabling these files to be tougher and more resistant to fracture, allied to its greater flexibility. Thus, itĀ“s possible to reduce the number of files for cleaning and shaping of canals during endodontic treatments without compromising the preservation of their autonomy. Hyflex EDM files have, such as Hyflex CM files, memory control (CM) effect, which provides very similar properties between the two systems.