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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Evaluación in vitro de la microrugosidad superficial de dos resinas tipo Bulk Fill inmersas a dos bebidas rehidratantes con pH de 2,79 y 3,3 / In vitro comparison of superficial microroughness of two Bulk Fill resins composites inmersed into two soft drinks

Avila Solis, Sandra Milagros 21 October 2019 (has links)
Objetivo: Comparar in vitro la rugosidad superficial de una resina compuesta tipo BulkFill: Aura® BulkFill (SDI) con la resina Tetric N-Ceram® BulkFill (Ivoclar Vivadent) al ser inmersas a dos bebidas rehidratantes: Sporade® y Gatorade®. Materiales y métodos: Se utilizaron 88 especímenes de resina divididos en cuatro grupos, confeccionados con una matriz metálica (10mm x 4mm). Se insertó las resinas con una espátula de resina, y se fotoactivó con la lámpara Elipar LedTM, con una intensidad de 1200 mW/cm2. Se sumergieron los especímenes en agua destilada. A las 24 horas, se midió la rugosidad con el rugosímetro Mitutoyo SJ-210P. Luego, se realizó la inmersión en bebidas rehidratantes y se midió la rugosidad final a los 7 días. Resultados: La rugosidad inicial y final de las resinas Aura® BulkFill (SDI) y Tetric N-Ceram® BulkFill (Ivoclar Vivadent) presentaron diferencias significativas después de la inmersión en bebidas rehidratantes. Para los especímenes de Aura® BulkFill (SDI) al someterla a Sporade® se encontró una media inicial de 1.20 y una media final de 1.76 y los valores para Gatorade® fueron 0.77 y 1.73. Mientras que la rugosidad superficial de Tetric N-Ceram® BulkFill (Ivoclar Vivadent) al sumergirla en Sporade® fue 0.82 y 1.55, y en Gatorade® 0.77 y 1.73. Al comparar la diferencia de la rugosidad superficial final e inicial (deltas), la resina Aura® BulkFill presentó diferencias significativas mientras que, Tetric N-Ceram® BulkFill no tuvo diferencias al sumergirlas en ambas bebidas rehidratantes. Conclusiones: Las resinas estudiadas incrementaron su rugosidad luego de ser inmersas a las bebidas mencionadas. / Objective: To compare in vitro the surface roughness of a BulkFill composite resin: Aura® BulkFill (SDI) with Tetric N-Ceram® BulkFill resin (Ivoclar Vivadent) when immersed in two rehydration drinks: Sporade® and Gatorade®. Materials and methods: 88 resin specimens divided into four groups were used, with a metal matrix (10 mm x 4 mm). The resins were inserted with a resin spatula, and photo-activated with the Elipar LedTM lamp, with an intensity of 1200 mW/cm2. The specimens were immersed in distilled water. After 24 hours, the roughness was measured with the Mitutoyo SJ-210P rugosimeter. Then, the immersion in rehydration drinks was performed and the final roughness was measured after 7 days. Results: The initial and final roughness of the resins Aura® BulkFill (SDI) and Tetric N-Ceram® BulkFill (Ivoclar Vivadent) showed significant differences after immersion in rehydration drinks. For specimens of Aura® BulkFill (SDI) when subjected to Sporade® an initial mean of 1.20 and a final average of 1.76 was found and the values for Gatorade® were 0.77 and 1.73. While the surface roughness of Tetric N-Ceram® BulkFill (Ivoclar Vivadent) when immersed in Sporade® was 0.82 and 1.55, and in Gatorade® 0.77 and 1.73. When comparing the difference of the final and initial surface roughness (deltas), the Aura® BulkFill resin showed significant differences while, Tetric N-Ceram® BulkFill did not have differences when immersing them in both rehydration drinks. Conclusions: The resins studied increased their roughness after being immersed in the aforementioned beverages. / Tesis

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