Influencia del tratamiento superficial con plasma de baja presión y tratamientos tradicionales sobre los materiales de restauración indirectos
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2023
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25/11/2022
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Universidad Complutense de Madrid
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La tendencia de la odontología hacia los procedimientos mínimamente invasivos ligado a la gran oferta de materiales de restauración indirectos promueve la aparición de nuevo de nuevos protocolos de adhesión específicos para cada uno de los materiales empleados. Esto requiere que el clínico tenga una gran variedad de productos con diferentes concentraciones, tamaños y presentaciones para cada uno de los materiales a emplear para las restauraciones. El éxito y la supervivencia de los tratamientos adhesivos esta intrínsecamente ligado a la correcta realización de cada uno de los pasos, siendo los tratamientos de superficie el primero de ellos y el más crítico. En este sentido, ante la necesidad de estandarizar y automatizar los tratamientos de superficie apareció el plasma no térmico (NTP). Esta tecnología permite modificar el comportamiento de las superficies cerámicas, pudiendo mejorar las propiedades adhesivas, mediante los procesos de limpieza y activación química...
The trend in dentistry towards minimally invasive procedures linked to the large offer of indirect restorative materials promotes the emergence of new specific bonding protocols for each of the materials used. This requires that clinician must have a wide variety of products with different concentrations, sizes, and presentations for each of the materials used for the restorations. The success and survival of the adhesive treatments is intrinsically linked to the correct performance of each of the steps, being the surface treatments the first and most critical.In this sense, the need to standardize and automate surface treatments led to the appearance of non-thermal plasma (NTP). This technology allows to modify the behavior of ceramic surfaces and to improve their adhesive properties by means of cleaning and chemical activation processes.The objectives of the present study were to analyze and compare the contact angle and adhesion strength produced by low pressure non-thermal plasma treatments versus traditional treatments on lithium disilicate and zirconium oxide ceramics, to evaluate the fracture pattern, and to analyze the chemical and microscopical characterization of the treated surfaces. The null hypotheses were that no differences would be found in wettability and adhesion strength among the different surface treatments, or between both ceramics...
The trend in dentistry towards minimally invasive procedures linked to the large offer of indirect restorative materials promotes the emergence of new specific bonding protocols for each of the materials used. This requires that clinician must have a wide variety of products with different concentrations, sizes, and presentations for each of the materials used for the restorations. The success and survival of the adhesive treatments is intrinsically linked to the correct performance of each of the steps, being the surface treatments the first and most critical.In this sense, the need to standardize and automate surface treatments led to the appearance of non-thermal plasma (NTP). This technology allows to modify the behavior of ceramic surfaces and to improve their adhesive properties by means of cleaning and chemical activation processes.The objectives of the present study were to analyze and compare the contact angle and adhesion strength produced by low pressure non-thermal plasma treatments versus traditional treatments on lithium disilicate and zirconium oxide ceramics, to evaluate the fracture pattern, and to analyze the chemical and microscopical characterization of the treated surfaces. The null hypotheses were that no differences would be found in wettability and adhesion strength among the different surface treatments, or between both ceramics...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Odontología, leída el 25-11-2022