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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

Comparación de la estabilidad dimensional de los materiales para registro intermaxilar: cera de componentes metálicos, modelina y siliconas

Sánchez Rengifo, Francisco Isidoro January 2015 (has links)
Se comparó la estabilidad dimensional lineal de cuatro materiales para registro intermaxilar aprobados por la Asociación Dental Americana (ADA): Siliconas Occlufast y Futar D, Godiva y Cera Aluwax. Un dispositivo de acero fue fabricado según la especificación N° 19 de la ADA para obtener las muestras. En total se realizaron 80 muestras (20 por cada material) y se midieron utilizando un calibrador digital en diferentes intervalos de tiempo: al momento, a la hora, a las 24 horas, a los 7 días y a los 22 días. Los resultados fueron analizados usando análisis de varianza ANOVA no paramétrico con P≤0.05. Los resultados obtenidos mostraron que la cera Aluwax con respecto a la Godiva, Silicona Occlufast y Futar D, presentó una mayor variación dimensional lineal con un promedio de 0.22 mm al momento, 0.24 mm a los 7 días y 0.26 mm a los 22 días. La Silicona Futar D presento la mejor estabilidad dimensional lineal con respecto a los otros materiales para registro intermaxilar utilizados con un promedio de 0 mm al momento y que se mantuvo constante hasta los 22 días donde se observó una variación dimensional lineal de 0.03 mm. Se concluyó que todos los materiales utilizados varían dimensionalmente a través del tiempo. Siendo la silicona Futar D la que muestra menor distorsión con buena estabilidad dimensional a comparación con la silicona Occlufast, Godiva y cera Aluwax respectivamente. PALABRAS CLAVE Estabilidad Dimensional – Registro intermaxilar – Polivinilsiloxano / --- Lineal dimensional stability of four intermaxilar registry materials approved by American Dental Association (ADA) were compared: Occlufast silicon, Futar D silicon, impression compound, and Aluwax. An steel device was made according to the specification Nº 19 of the ADA in order to obtain the samples. A total of 80 samples were registered (20 for each material) and they were measured with a digital caliper at different time intervals: at the time, an hour after, 24 hours after, 7 days after, and 22 days after. The results were analyzed using an analysis of variance (ANOVA) not parametric with p≤0.05. The obtained results showed that the aluwax, in comparison with the other materials, presented the most lineal dimensional variation with a mean of 0.22mm at the moment, 0.24mm after 7 days, and 0.26mm after 22 days. The Futar D silicon presented the most lineal dimensional stability in comparison with the other intermaxilar registry materials used with a mean of 0mm at the moment, that kept its stability constant until the 22nd day, when a lineal dimensional variation of 0.03mm was observed. It was concluded that all the used materials vary dimensionally over time. Being the Futar D silicon the one that shows the least distortion with a good dimensional stability in comparison with Occlufast silicon, impression compound, and Aluwax respectively. KEYWORDS Dimensional Stability – Intermaxilar registry – Polyvinyl siloxane / Tesis

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