Fracture Resistance of a CAD/CAM Nanoceramic Repaired with Two Surface Treatments: In Vitro Study.
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| Title: | Fracture Resistance of a CAD/CAM Nanoceramic Repaired with Two Surface Treatments: In Vitro Study. |
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| Alternate Title: | Resistencia a la fractura de una nanocerámica CAD/CAM reparada con dos tratamientos de superficie: estudio in vitro. Resistência à fratura de uma nanocerâmica CAD/CAM reparada com dois tratamentos de superfície: estudo in vitro. |
| Authors: | Geovanny Cascante-Calderón, Marcelo1 mcascante@uce.edu.ec, Reascos Flores, Kevin Alejandro1 kareascos@uce.edu.ec, Villacís Altamirano, Inés María1 imvillacís@uce.edu.ec, Bayas Salinas, Anggely Maite1 ambayas@uce.edu.ec, Taraguay Galindo, Jessica Elizabeth1 jetaraguay@uce.edu.ec |
| Source: | Universitas Odontológica. 2023, Vol. 42, p1-13. 13p. |
| Subjects: | SURFACE preparation, CEMENT composites, FRACTURE mechanics, HYDROFLUORIC acid, ALUMINUM oxide |
| Abstract (English): | Background: Fractures of restorations in the mouth are inevitable. When this happens, the clinician should be able to repair them in a simple and reliable way. Purpose: To measure adhesion on a composite for Cad/Cam when it has been sandblasted or acid etched. Methods: 50 Brava Block sheets were divided into 5 groups of n= 10; and aged at 5000 thermal cycles. 100 resin cylinders of 3 mm diameter were cemented to the sheets. The groups: aluminum oxide (AL10) and aluminum oxide with silane (ALS 10) were sandblasted and the hydrofluoric acid (HF10) and hydrofluoric acid with silane (HFS10) groups were etched. The AHS group (aluminum oxide plus hydrofluoric acid with silane) was sandblasted, and acid etched. The cylinders were cemented with resin cement. All groups were sheared in a universal testing machine. Adhesion failures were analyzed under a 40X microscope. All the statistics were worked with an α= 0.05. Results: The groups had similar adhesion strengths. As they aged, their values decreased to 11.15 and 8.15 MPa, on average. The failures were: Adhesives 12 %; Cohesive 68 % and mixed 20 %, higher cohesive and mixed prevalence in sandblasted groups with ruptures of 80-90 %. Conclusions: Both treatments produce similar FA between a Cad/Cam composite and a resinous cement. However, the sandblasted groups suffered a higher percentage of material fractures. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): | Antecedentes: Las fracturas de las restauraciones en boca son inevitables. Cuando ello sucede, el clínico debería poder repararlas de una manera sencilla y confiable. Objetivo: Medir la adhesión en un composite para Cad/Cam, cuando ha sido arenado o grabado con ácido. Métodos: 50 láminas de Brava Block fueron divididas en 5 grupos de n= 10; y envejecidas a 5000 ciclos térmicos. 100 cilindros de resina de 3 mm de diámetro fueron cementados a las láminas. Los grupos: óxido de aluminio (AL10) y oxido de aluminio con silano (ALS 10) fueron arenados y los grupos ácido fluorhídrico (HF10) Y ácido fluorhídrico con silano (HFS10) fueron grabados. El grupo (óxido de aluminio más acido fluorhídrico con silano) AHS fue arenado y grabado con ácido. Los cilindros se cementaron con cemento de resina. Todos los grupos fueron cizallados en una máquina de ensayo universal. Las fallas en la adhesión fueron analizadas con un microscopio a 40X. Toda la estadística se trabajó con un α= 0,05. Resultados: Los grupos tuvieron similares fuerzas de adhesión. Al ser envejecidos, sus valores disminuyeron a 11,15 y 8,15 MPa, en promedio. Los fallos fueron: Adhesivos 12 %; Cohesivos 68 % y mixtos 20 %, mayor prevalencia cohesiva y mixta en los grupos arenados con rupturas del 80-90 %. Conclusiones: Ambos tratamientos producen similares FA entre un composite para Cad/Cam y un cemento resinoso. Sin embargo, los grupos arenados sufrieron un mayor porcentaje de fracturas del material. [ABSTRACT FROM AUTHOR] |
| Abstract (Portuguese): | Antecedentes: Fraturas de restaurações em boca são inevitáveis. Quando isso acontece, o clínico deve ser capaz de reparálos de forma simples e confiável. Objetivo: Medir a adesão em um compósito para Cad/Cam, quando este foi jateado ou ácido. Métodos: 50 placas Brava Block foram divididas em 5 grupos de n= 10; e envelhecido em 5000 ciclos térmicos. 100 cilindros de resina de 3 mm de diâmetro foram cimentados às placas. Os grupos: óxido de alumínio (AL10) e óxido de alumínio com silano (ALS 10) foram jateados e os grupos ácido fluorídrico (HF10) e ácido fluorídrico com silano (HFS10) foram atacados. O grupo AHS (óxido de alumínio mais ácido fluorídrico com silano) foi jateado e atacado com ácido. Os cilindros foram cimentados com cimento resinoso. Todos os grupos foram cisalhados em uma máquina de ensaios universal. As falhas de adesão foram analisadas em microscópio de 40X. Todas as estatísticas foram trabalhadas com α= 0,05. Resultados: Os grupos tiveram forças de adesão semelhantes. À medida que envelheciam, seus valores diminuíam para 11,15 e 8,15 MPa, em média. As falhas foram: Adesivos 12 %; Coesivo 68 % e misto 20 %, maior prevalência de coesivo e misto em grupos jateados com rupturas de 80-90 %. Conclusões: Ambos os tratamentos produzem FA semelhantes entre um compósito Cad/Cam e um cimento resinoso. No entanto, os grupos jateados sofreram uma maior porcentagem de fraturas de material. [ABSTRACT FROM AUTHOR] |
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| Database: | MedicLatina |
| Abstract: | Background: Fractures of restorations in the mouth are inevitable. When this happens, the clinician should be able to repair them in a simple and reliable way. Purpose: To measure adhesion on a composite for Cad/Cam when it has been sandblasted or acid etched. Methods: 50 Brava Block sheets were divided into 5 groups of n= 10; and aged at 5000 thermal cycles. 100 resin cylinders of 3 mm diameter were cemented to the sheets. The groups: aluminum oxide (AL10) and aluminum oxide with silane (ALS 10) were sandblasted and the hydrofluoric acid (HF10) and hydrofluoric acid with silane (HFS10) groups were etched. The AHS group (aluminum oxide plus hydrofluoric acid with silane) was sandblasted, and acid etched. The cylinders were cemented with resin cement. All groups were sheared in a universal testing machine. Adhesion failures were analyzed under a 40X microscope. All the statistics were worked with an α= 0.05. Results: The groups had similar adhesion strengths. As they aged, their values decreased to 11.15 and 8.15 MPa, on average. The failures were: Adhesives 12 %; Cohesive 68 % and mixed 20 %, higher cohesive and mixed prevalence in sandblasted groups with ruptures of 80-90 %. Conclusions: Both treatments produce similar FA between a Cad/Cam composite and a resinous cement. However, the sandblasted groups suffered a higher percentage of material fractures. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 01204319 |
| DOI: | 10.11144/Javeriana.uo42.frcc |
