EvaluaciĆ³n del grado de sellado marginal y resistencia adhesiva de restauraciones de resina compuesta con adhesivo convencional en denticiĆ³n primaria y definitiva
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Fecha
2014-12
Profesor/a GuĆa
Facultad/escuela
Idioma
es
TĆtulo de la revista
ISSN de la revista
TĆtulo del volumen
Editor
Sociedad de Periodoncia de Chile. Sociedad de ImplantologĆa Oral de Chile. Sociedad de PrĆ³tesis y RehabilitaciĆ³n Oral de Chile.
Nombre de Curso
Licencia CC
Licencia CC
Resumen
El presente estudio evaluĆ³ el grado de sellado marginal y resistencia adhesiva de restauraciones de resinas compuestas confeccionadas con un sistema adhesivo de grabado y lavado en denticiĆ³n primaria y definitiva.
Para realizar ambos test se utilizaron 20 piezas primarias y 20 piezas definitivas.
En resistencia al cizallamiento, los dientes fueron seccionados longitudinalmente y se les adhiriĆ³ un cilindro de resina compuesta, utilizando la tĆ©cnica adhesiva de grabado y lavado para ambas denticiones. Posteriormente, fueron testeados en una mĆ”quina de ensayos universales Tinius Olsen, aplicando una fuerza de cizallamiento de 200 kg y a una velocidad de cabezal de 0,2 cm/min.
Para el test de sellado marginal, se les realizĆ³ una preparaciĆ³n cavitaria clase V, por vestibular/palatino estandarizada. Luego se les confeccionaron restauraciones de resina compuesta con la tĆ©cnica de grabado y lavado, y se sometieron al termociclado con azul de metileno al 2%; despuĆ©s fueron cortados y observados al microscopio Ć³ptico estereoscĆ³pico con aumento de lupa, para medir el porcentaje de microfiltraciĆ³n obtenido.
El valor promedio de la resistencia adhesiva al cizallamiento para denticiĆ³n primaria fue de 8,49 Mpa, y de 9,52 Mpa para denticiĆ³n definitiva, no encontrĆ”ndose diferencias estadĆsticamente significativas entre los grupos en estudio. En la investigaciĆ³n sobre el grado de sellado marginal se evaluĆ³ el porcentaje de microfiltraciĆ³n y tampoco se encontraron diferencias estadĆsticamente significativas, lo que seƱalarĆa que ambos tejidos son igualmente susceptibles de ser tratados adhesivamente mediante la tĆ©cnica de hibridaciĆ³n.
Abstract The present study evaluated the degree of marginal seal and adhesive resistance of composite resin restorations prepared with an etch and rinse adhesive system in primary and definitive dentition. To perform both tests, 20 primary pieces and 20 permanent pieces were used. In the shear strength resistance, the teeth were sectioned longitudinally and were adhered to composite resin cylinder, using the etch and rinse technique for both dentitions. They were then tested on a Tinius Olsen universal testing machine, applying a shear force of 200 kg and a head speed of 0.2 cm/min. For the margin seal test, a class V cavity preparation of standardised vestibular/palatine was made. The composite resin restorations were made with the etch and rinse technique and were subjected to thermocycling with 2% methylene blue. Later, they were cut and observed using a stereoscopic optical microscope with loop magnification to measure the percentage of microfiltration obtained. The mean value of the adhesive resistance to shearing for primary dentition was 8.49 Mpa, and 9.52 Mpa for permanent teeth, with no statistically significant differences being found between the groups studied. In the test on the degree of margin seal the percentage microfiltration was measured, with no statistically significant differences being found either. The results showed that both tissues are equally susceptible to being treated adhesively using the hybrid technique
Abstract The present study evaluated the degree of marginal seal and adhesive resistance of composite resin restorations prepared with an etch and rinse adhesive system in primary and definitive dentition. To perform both tests, 20 primary pieces and 20 permanent pieces were used. In the shear strength resistance, the teeth were sectioned longitudinally and were adhered to composite resin cylinder, using the etch and rinse technique for both dentitions. They were then tested on a Tinius Olsen universal testing machine, applying a shear force of 200 kg and a head speed of 0.2 cm/min. For the margin seal test, a class V cavity preparation of standardised vestibular/palatine was made. The composite resin restorations were made with the etch and rinse technique and were subjected to thermocycling with 2% methylene blue. Later, they were cut and observed using a stereoscopic optical microscope with loop magnification to measure the percentage of microfiltration obtained. The mean value of the adhesive resistance to shearing for primary dentition was 8.49 Mpa, and 9.52 Mpa for permanent teeth, with no statistically significant differences being found between the groups studied. In the test on the degree of margin seal the percentage microfiltration was measured, with no statistically significant differences being found either. The results showed that both tissues are equally susceptible to being treated adhesively using the hybrid technique
Notas
IndexaciĆ³n: Web of Science; Scielo.
Palabras clave
DenticiĆ³n primaria, Resistencia adhesiva, TĆ©cnica adhesiva convencional, MicrofiltraciĆ³n, Resistencia al cizallamiento
CitaciĆ³n
Rev. Clin. Periodoncia Implantol. Rehabil. Oral vol.7 no.3 Santiago Dec. 2014