Influencia del arenado en la microfiltración marginal entre el sellado inmediato y el cemento temporal de óxido de zinc
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Archivos
Fecha
2022
Profesor/a Guía
Facultad/escuela
Idioma
es
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Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Objetivo: Evaluar el porcentaje de microfiltración marginal de una preparación
con arenado v/s una sin arenado previo, entre sellado inmediato de la dentina,
utilizando el adhesivo Optibond FL y cemento temporal de óxido de zinc sin
eugenol (Temp bond)
Materiales y método: Para el siguiente estudio se recolectaron un número de
36 dientes específicamente molares definitivos sanos, donados por pacientes
adultos entre 18 y 35 años que requerían procedimiento de exodoncia en la
clínica de la universidad. Se realizó en cada pieza dental una limpieza total
utilizando escobilla dura con agua, para posteriormente conservarlas en suero
fisiológico al 0,9%. Además, se realizó un sellado total de raíz o zonas expuestas
de la dentina cervical con cianoacrilato (la gotita) o esmalte de uñas.
Los dientes fueron almacenados en agua destilada por 24 horas. Un solo
operador realizó las preparaciones cavitarias en cada diente (ocluso-mesial y
ocluso-distal) Dichas preparaciones estandarizadas en la cara oclusal con
medida del piso de 3 mm desde la pared proximal hasta la pared axial.
Comprobando de esta forma la similitud entre el total de 72 preparaciones.
Se separaron en dos grupos aleatorizados (18 dientes cada grupo), Grupo CA
y Grupo SA.
A ambos grupos se les realizó SID con Optibond Fl y se almacenaron en agua
destilada por 48 hrs. Posteriormente se realizaron restauraciones indirectas
temporales con resina compuesta Smile (Kerr Co, EE.UU) , se cementaron con
cemento temporal Tempbond NE (Kerr Dental, USA), y fueron almacenados en
agua destilada por 72 hrs.
Luego de almacenarlos por 72 hrs, sacamos los provisorios y con una escobilla
blanda con agua se removieron los restos de cemento provisional de la superficie
dentaria. Se realizaron las restauraciones indirectas definitivas de ambos grupos
y arenado con óxido de aluminio 50 um solo al Grupo CA. Posteriormente se
cementaron las restauraciones indirectas definitivas en ambos grupos con cemento Maxcem ( Kerr, Co, EE.UU) según indicación del fabricante y se
fotopolimerizó con Lámpara de fotocurado LED (Woodpecker, China). Las
muestras se almacenaron en agua destilada durante 72 hrs.
Una vez almacenadas se sometieron a proceso de termociclado (envejecimiento
artificial), luego se realizó la tinción de ambos grupos con azul de metileno
durante 24 hrs y se seccionaron longitudinalmente en la mitad del eje axial de
las restauraciones en dirección mesio-distal para evaluar el porcentaje de
microfiltración marginal.
Resultados: Para el Grupo con arenado la mediana, desviación estándar y
media fue 8.3, 20 y 16.89 y el grupo sin arenado 25, 30 y 32.87 respectivamente.
El test estadístico de Mann-Whitney indicó que fue menor a 0.05 por lo que
existieron diferencias significativas entre ambos grupos
Conclusión: Existieron diferencias significativas entre ambos grupos. Los
resultados obtenidos demuestran que existió mayor microfiltración marginal en
el Grupo SA. De una total de 72 preparaciones se dividieron en 2 grupos de 36
cada una. La desviación estándar para el grupo C/A TEMPB fue de 20 y para el
grupo S/A TEMPB de 30. En los resultados estadísticos se mostró que es menor
a 0,05 lo que nos dice que si hay diferencias significativas entre ambos grupos.
Objective: To evaluate the percentage of marginal microleakage of a preparation with sandblasting vs. one without prior sandblasting, between immediate sealing of the dentin, using the Optibond FL adhesive and temporary zinc oxide cement without eugenol (Temp bond). Materials and method: For the following study, a number of 36 healthy definitive molar teeth were collected, donated by adult patients between 18 and 35 years of age who required an extraction procedure at the university clinic. A total cleaning was carried out on each dental piece using a hard brush with water, to later preserve them in 0.9% physiological serum. In addition, a total sealing of the root or exposed areas of the cervical dentin was performed with cyanoacrylate (the droplet) or nail polish. The teeth were stored in distilled water for 24 hours. A single operator made the cavity preparations in each tooth (occluso-mesial and occluso-distal). Said preparations were standardized in the occlusal face with a floor measurement of 3 mm from the proximal wall to the axial wall. Checking in this way the similarity between the total of 72 preparations. They were separated into two randomized groups (18 teeth each group), Group CA and Group SA. Both groups underwent SID with Optibond Fl and were stored in distilled water for 48 hours. Temporary indirect restorations were then made with Smile composite resin (Kerr Co, USA), cemented with Tempbond NE temporary cement (Kerr Dental, USA), and stored in distilled water for 72 hours. After storing them for 72 hours, we took out the temporary ones and with a soft brush with water the remains of provisional cement were removed from the dental surface. Definitive indirect restorations were made for both groups and sandblasting with 50 um aluminum oxide only for Group CA. Subsequently, the definitive indirect restorations in both groups were cemented with Maxcem cement (Kerr, Co, USA) according to the manufacturer's instructions and light- cured with an LED light-curing lamp (Woodpecker, China). The samples were stored in distilled water for 72 hours. Once stored, they underwent a thermocycling process (artificial aging), then both groups were stained with methylene blue for 24 hours and longitudinally sectioned in the middle of the axial axis of the restorations in a mesio-distal direction to evaluate the percentage of marginal microleakage. Results: For the Group with sandblasting the median, standard deviation and mean were 8.3, 20 and 16.89 and the group without sandblasting 25, 30 and 32.87 respectively. The Mann-Whitney statistical test indicated that it was less than 0.05, so there were significant differences between both groups. Conclusion: There were significant differences between both groups. The results obtained show that there was greater marginal microleakage in the SA Group. From a total of 72 preparations, they were divided into 2 groups of 36 each. The standard deviation for the C/A TEMPB group was 20 and for the S/A TEMPB group it was 30. The statistical results showed that it is less than 0.05, which tells us that there are significant differences between the two groups.
Objective: To evaluate the percentage of marginal microleakage of a preparation with sandblasting vs. one without prior sandblasting, between immediate sealing of the dentin, using the Optibond FL adhesive and temporary zinc oxide cement without eugenol (Temp bond). Materials and method: For the following study, a number of 36 healthy definitive molar teeth were collected, donated by adult patients between 18 and 35 years of age who required an extraction procedure at the university clinic. A total cleaning was carried out on each dental piece using a hard brush with water, to later preserve them in 0.9% physiological serum. In addition, a total sealing of the root or exposed areas of the cervical dentin was performed with cyanoacrylate (the droplet) or nail polish. The teeth were stored in distilled water for 24 hours. A single operator made the cavity preparations in each tooth (occluso-mesial and occluso-distal). Said preparations were standardized in the occlusal face with a floor measurement of 3 mm from the proximal wall to the axial wall. Checking in this way the similarity between the total of 72 preparations. They were separated into two randomized groups (18 teeth each group), Group CA and Group SA. Both groups underwent SID with Optibond Fl and were stored in distilled water for 48 hours. Temporary indirect restorations were then made with Smile composite resin (Kerr Co, USA), cemented with Tempbond NE temporary cement (Kerr Dental, USA), and stored in distilled water for 72 hours. After storing them for 72 hours, we took out the temporary ones and with a soft brush with water the remains of provisional cement were removed from the dental surface. Definitive indirect restorations were made for both groups and sandblasting with 50 um aluminum oxide only for Group CA. Subsequently, the definitive indirect restorations in both groups were cemented with Maxcem cement (Kerr, Co, USA) according to the manufacturer's instructions and light- cured with an LED light-curing lamp (Woodpecker, China). The samples were stored in distilled water for 72 hours. Once stored, they underwent a thermocycling process (artificial aging), then both groups were stained with methylene blue for 24 hours and longitudinally sectioned in the middle of the axial axis of the restorations in a mesio-distal direction to evaluate the percentage of marginal microleakage. Results: For the Group with sandblasting the median, standard deviation and mean were 8.3, 20 and 16.89 and the group without sandblasting 25, 30 and 32.87 respectively. The Mann-Whitney statistical test indicated that it was less than 0.05, so there were significant differences between both groups. Conclusion: There were significant differences between both groups. The results obtained show that there was greater marginal microleakage in the SA Group. From a total of 72 preparations, they were divided into 2 groups of 36 each. The standard deviation for the C/A TEMPB group was 20 and for the S/A TEMPB group it was 30. The statistical results showed that it is less than 0.05, which tells us that there are significant differences between the two groups.
Notas
Tesis (Cirujano Dentista)
Palabras clave
Adhesivos Dentales, Evaluación, Materiales Dentales