Efectos del sellado inmediato dentinario en relación a la resistencia adhesiva microtraccional
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Fecha
2013
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Profesor/a GuĆa
Facultad/escuela
Idioma
es
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Universidad AndrƩs Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Propósito: El objetivo de este estudio fue comparar la fuerza de unión de dos técnicas
distintas de adhesión de restauraciones indirectas a los tejidos dentinarios: técnica de
Sellado Inmediato de la Dentina (SOI) y tĆ©cnica de Sellado TardĆo.
Materiales y MƩtodos: se utilizaron doce terceros molares, sin lesiones de caries, que
fueron almacenados en solución salina desde su exodoncia hasta el experimento.
Se crearon superficies planas, con el fin de exponer tejido dentinario en la totalidad de la
cara oclusal, usando un removedor modelo. Se dividió la muestra en 3 grupos: al grupo A se
le restauró inmediatamente con una restauración directa de resina y fue definido como grupo
control, al grupo B se realizó un sellado tardĆo de la dentina, restaurando provisoriamente en
una primera instancia y posteriormente en forma definitiva, y al grupo C se le realizó una
hibridización inmediata del tejido dentinario (SOi), antes de la etapa de provisional.
Los grupos By C despuƩs de haberse preparado y puesto un provisorio en base a resina,
fueron almacenados por 7 dĆas en suero fisiológico dentro de una incubadora. Pasada la
semana se removieron los tratamientos provisionales y se les aplicó el acondicionamiento
de la superficie antes de la confección de la restauración, en ambos se utilizó un adhesivo
de tres pasos de grabado y lavado y a continuación una restauración de resina compuesta.
El grupo B fue tratado convencionalmente con hibridización de la superficie dentinaria,
mientras que el grupo C fue tratado con arenado de óxido de aluminio con partĆculas de 30
Um, previo a la hibridización de la capa de SDI. Las muestras fueron cortadas y sometidas a
pruebas de fuerzas de microtensión (microTBS). Se registraron los valores arrojados para
cada muestray fueron analizados mediante ANOVA .
Resultado: valores mÔs bajos de resistencia a microtracción fueron arrojados para el grupo
B (sellado tardĆo), mientras que los grupos A (control) y C (SOi) arrojaron valores mayores y
similares entre sĆ, existiendo una diferencia estadĆsticamente significativa en relación al
grupo de sellado tardĆo.
Objective: The purpose of this study is to compare the union strength of two different indirect restoration adhesion technics on the final destination tissues : lmmediate Sealing Dentine and Delayed Technic. Methodology and Materials: Twelve third molars without any decays were used. Same were stored in salt solution from their extraction up to the moment of the experiment. Flat surfaces were created so as to expose the final target tissue all over the occlusal face, by using a model remover. The sample was divided into three groups: Group A was immediately ment by using a direct restoration resin and was defined as the Control Group. Group B was sealed by using a delayed dentine sealer, provisionally restored as a start and then definitely restored. Group C was given an immediate hybrid procedure on the target tissue before the provisional stage. Groups B and C were stored during seven days in physiological serum inside an incubator after being prepared and located in a provisional resin base. After this period of time, the provisional treatments were removed and their surfaces were treated prior the restoration took place. In both cases, a three step adhesive was used along with a composite restoration resin. Group B was conventionally treated by using the hybrid method mentioned above whereas Group C was treated by using aluminum oxide sanding with 30um particles before using the hybrid treatment of the SOi layer. AII samples were cut and subject to micro tension strength forces (microTBS). AII figures were recorded for each sample and finally analyzed by using NOVA. Results: Lower micro traction resistance were found in Group B (delayed sealing), meanwhile both Group A (control) and C showed higher and similar values between them both, therefore there is a statistically meaningful difference in relation to the delayed sealing group.
Objective: The purpose of this study is to compare the union strength of two different indirect restoration adhesion technics on the final destination tissues : lmmediate Sealing Dentine and Delayed Technic. Methodology and Materials: Twelve third molars without any decays were used. Same were stored in salt solution from their extraction up to the moment of the experiment. Flat surfaces were created so as to expose the final target tissue all over the occlusal face, by using a model remover. The sample was divided into three groups: Group A was immediately ment by using a direct restoration resin and was defined as the Control Group. Group B was sealed by using a delayed dentine sealer, provisionally restored as a start and then definitely restored. Group C was given an immediate hybrid procedure on the target tissue before the provisional stage. Groups B and C were stored during seven days in physiological serum inside an incubator after being prepared and located in a provisional resin base. After this period of time, the provisional treatments were removed and their surfaces were treated prior the restoration took place. In both cases, a three step adhesive was used along with a composite restoration resin. Group B was conventionally treated by using the hybrid method mentioned above whereas Group C was treated by using aluminum oxide sanding with 30um particles before using the hybrid treatment of the SOi layer. AII samples were cut and subject to micro tension strength forces (microTBS). AII figures were recorded for each sample and finally analyzed by using NOVA. Results: Lower micro traction resistance were found in Group B (delayed sealing), meanwhile both Group A (control) and C showed higher and similar values between them both, therefore there is a statistically meaningful difference in relation to the delayed sealing group.
Notas
Tesis (MagĆster en OdontologĆa, Especialista en OdontologĆa Restauradora)
Palabras clave
Restauración Dental Permanente, Adhesivos Dentales, TĆ©cnica de sellado inmediato y tardĆo de la dentina, Materiales Dentales, Chile