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Cimentação adesiva com auxílio de retenção mecânica em estruturas de zircónio
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| PPG_36209 | 297.62 KB | Adobe PDF |
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Abstract(s)
Os avanços tecnológicos e em materiais dentários dos últimos anos, têm influenciado nas escolhas por técnicas conservadoras e minimamente invasivas e com isso fica-se muito mais dependente da adesão química, mecânica ou ambas nos matérias dentários.
O objetivo deste trabalho foi avaliar através de revisão de literatura os métodos e resultados de tratamentos de superfície mais habitualmente utilizados para obter esse tipo de retenção mecânica em estruturas de zircónio tetragonal estabilizada com ítria (Y-TZP).
Os métodos utilizados para obter esse tipo de retenção mecânicos são, jateamento com pó de óxido de alumínio, laser e a silicatização, são os mais investigados na literatura, ao ponto de otimizar os resultados dos agentes cimentantes com união mecânica por auxílio de micro retenção, que quando estiverem presentes na superfície da estrutura de zircónio permitem que o cimento resinoso penetrem na resultados encontrados até o momento, mostraram que o uso do jateamento com oxido de alumínio impregnado com sílica têm sido o tratamento de superfície para alcançar uma ótima união dos cimentos resinosos ao zircónio à longo prazo.
The technological advances and dental materials of recent years have influenced the choices by conservative and minimally invasive techniques, and with this, it is much more dependent on the chemical, mechanical or both adhesion in the dental materials. The current work aims at reviewing the literature on the methods and results of the treatment of surfaces usually used on cementing adhesion with zirconium-based retention structures. Several procedures have been used to promote the union between yttria stabilized tetragonal zirconium (Y-TZP) and resin cement. These can last longer if micromechanics retentions are present at the surface, as rough zirconium allows the resin cement to penetrate the micro retentions. The mechanical methods of sandblasting with aluminum oxide powder, and silicatization, are the most tested in the literature, to the point of optimizing the results of cementing agents with the mechanical bonding through the aid of micro-retention. Despite this, there is no consensus on the best method of surface treatment for a better combination of long-term results.
The technological advances and dental materials of recent years have influenced the choices by conservative and minimally invasive techniques, and with this, it is much more dependent on the chemical, mechanical or both adhesion in the dental materials. The current work aims at reviewing the literature on the methods and results of the treatment of surfaces usually used on cementing adhesion with zirconium-based retention structures. Several procedures have been used to promote the union between yttria stabilized tetragonal zirconium (Y-TZP) and resin cement. These can last longer if micromechanics retentions are present at the surface, as rough zirconium allows the resin cement to penetrate the micro retentions. The mechanical methods of sandblasting with aluminum oxide powder, and silicatization, are the most tested in the literature, to the point of optimizing the results of cementing agents with the mechanical bonding through the aid of micro-retention. Despite this, there is no consensus on the best method of surface treatment for a better combination of long-term results.
Description
Keywords
Adesão Agentes cimentantes Retenção mecânica Zircónio Adhesion Cementing agents Mechanical retention Zirconia