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    Influencia de la vibraci贸n s贸nica y el tipo de cemento en la fuerza de uni贸n de los postes de fibra de vidrio despu茅s del envejecimiento.

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    Introduction: This study evaluated the influence of sonic vibration and thermocycling on the bond strength of fiberglass posts using conventional dual-cured and self-adhesive resin cements. Material and Methods: Ninety-six single-rooted endodontically treated teeth were divided randomly into eight groups according to the cement used (dual-cured or self-adhesive resin cement), use of sonic vibration during post accommodation, and aging conditions (24h in distilled water or 5,000 thermal cycles). The fiberglass posts (White Post DC1, FGM) were cleaned with alcohol, treated with silane and cemented with dual-cured (Allcem Core, FGM) or with self-adhesive resin cement (seT, SDI). For groups in which sonic vibration was used, the posts were accommodated, and sonic vibration was applied for 10 s using a special tip placed on top of the post (Sonic Smart Device, FGM). Pull-out tests were performed after storage in distilled water for 24h at 37掳C or after thermocycling (5000 cycles, at 5掳C and 55掳C). The results were evaluated using three-way ANOVA and Tukey鈥檚 test (?=0.05). Results: Significant differences were not observed between the bond strengths of dual-cured (87.93卤41.81 N) and self-adhesive cement (82.53卤41.43 N). Bond strength for the sonic vibration groups (100.36卤42.35 N) was significantly higher than for groups without sonic vibration (70.13卤34.90 N). There were significant differences between specimens subjected to thermocycling (98.33卤39.42 N) and those stored for 24h in distilled water (72.16卤39.67 N). Conclusion: It can be concluded that both sonic vibration and thermocycling significantly improved bond strength of fiberglass posts with the two evaluated resin cements.Introducci贸n: Este estudio evalu贸 la influencia de la vibraci贸n s贸nica y el termociclado en la fuerza de uni贸n de los postes de fibra de vidrio utilizando cementos de resina autoadhesivos y de curado dual convencionales Material y M茅todos: Se dividieron aleatoriamente noventa y seis dientes tratados endod贸nticamente de ra铆z 煤nica en ocho grupos seg煤n el cemento utilizado (cemento de resina de curado dual o autoadhesivo), el uso de vibraci贸n s贸nica durante la acomodaci贸n posterior y las condiciones de envejecimiento (24 horas agua destilada o 5.000 ciclos t茅rmicos). Los postes de fibra de vidrio (White Post DC1, FGM) se limpiaron con alcohol, se trataron con silano y se cementaron con cemento de curado dual (Allcem Core, FGM) o con cemento de resina autoadhesivo (seT, SDI). Para los grupos en los que se utiliz贸 vibraci贸n s贸nica, se acomodaron los postes y se aplic贸 la vibraci贸n s贸nica durante 10 s utilizando una punta especial colocada en la parte superior del poste (Sonic Smart Device, FGM). Las pruebas de extracci贸n se realizaron despu茅s del almacenamiento en agua destilada durante 24 horas a 37潞C o despu茅s del termociclado (5000 ciclos, a 5潞C y 55潞C). Los resultados se evaluaron mediante ANOVA de tres v铆as y la prueba de Tukey (? = 0.05). Resultados: No se observaron diferencias significativas entre las resistencias de adhesi贸n del cemento de curado dual (87,93 卤 41,81 N) y el cemento autoadhesivo (82,53 卤 41,43 N). La fuerza de uni贸n para los grupos de vibraci贸n s贸nica (100,36 卤 42,35 N) fue significativamente mayor que para los grupos sin vibraci贸n s贸nica (70,13 卤 34,90 N). Hubo diferencias significativas entre los espec铆menes sometidos a termociclado (98,33 卤 39,42 N) y los almacenados durante 24 h en agua destilada (72,16 卤 39,67 N). Conclusi贸n: Se puede concluir que tanto la vibraci贸n s贸nica como el termociclado mejoraron significativamente la fuerza de uni贸n de los postes de fibra de vidrio con los dos cementos de resina evaluados

    Influence of sonic vibration and cement type on the bond strength of fiberglass posts after aging.

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    Introduction: This study evaluated the influence of sonic vibration and thermocycling on the bond strength of fiberglass posts using conventional dual-cured and self-adhesive resin cements. Material and Methods: Ninety-six single-rooted endodontically treated teeth were divided randomly into eight groups according to the cement used (dual-cured or self-adhesive resin cement), use of sonic vibration during post accommodation, and aging conditions (24h in distilled water or 5,000 thermal cycles). The fiberglass posts (White Post DC1, FGM) were cleaned with alcohol, treated with silane and cemented with dual-cured (Allcem Core, FGM) or with self-adhesive resin cement (seT, SDI). For groups in which sonic vibration was used, the posts were accommodated, and sonic vibration was applied for 10 s using a special tip placed on top of the post (Sonic Smart Device, FGM). Pull-out tests were performed after storage in distilled water for 24h at 37掳C or after thermocycling (5000 cycles, at 5掳C and 55掳C). The results were evaluated using three-way ANOVA and Tukey鈥檚 test (伪=0.05). Results: Significant differences were not observed between the bond strengths of dual-cured (87.93卤41.81 N) and self-adhesive cement (82.53卤41.43 N). Bond strength for the sonic vibration groups (100.36卤42.35 N) was significantly higher than for groups without sonic vibration (70.13卤34.90 N). There were significant differences between specimens subjected to thermocycling (98.33卤39.42 N) and those stored for 24h in distilled water (72.16卤39.67 N). Conclusion: It can be concluded that both sonic vibration and thermocycling significantly improved bond strength of fiberglass posts with the two evaluated resin cements.Introducci贸n: Este estudio evalu贸 la influencia de la vibraci贸n s贸nica y el termociclado en la fuerza de uni贸n de los postes de fibra de vidrio utilizando cementos de resina autoadhesivos y de curado dual convencionalesMaterial y M茅todos: Se dividieron aleatoriamente noventa y seis dientes tratados endod贸nticamente de ra铆z 煤nica en ocho grupos seg煤n el cemento utilizado (cemento de resina de curado dual o autoadhesivo), el uso de vibraci贸n s贸nica durante la acomodaci贸n posterior y las condiciones de envejecimiento (24 horas agua destilada o 5.000 ciclos t茅rmicos). Los postes de fibra de vidrio (White Post DC1, FGM) se limpiaron con alcohol, se trataron con silano y se cementaron con cemento de curado dual (Allcem Core, FGM) o con cemento de resina autoadhesivo (seT, SDI). Para los grupos en los que se utiliz贸 vibraci贸n s贸nica, se acomodaron los postes y se aplic贸 la vibraci贸n s贸nica durante 10 s utilizando una punta especial colocada en la parte superior del poste (Sonic Smart Device, FGM). Las pruebas de extracci贸n se realizaron despu茅s del almacenamiento en agua destilada durante 24 horas a 37潞C o despu茅s del termociclado (5000 ciclos, a 5潞C y 55潞C). Los resultados se evaluaron mediante ANOVA de tres v铆as y la prueba de Tukey (伪 = 0.05). Resultados: No se observaron diferencias significativas entre las resistencias de adhesi贸n del cemento de curado dual (87,93 卤 41,81 N) y el cemento autoadhesivo (82,53 卤 41,43 N). La fuerza de uni贸n para los grupos de vibraci贸n s贸nica (100,36 卤 42,35 N) fue significativamente mayor que para los grupos sin vibraci贸n s贸nica (70,13 卤 34,90 N). Hubo diferencias significativas entre los espec铆menes sometidos a termociclado (98,33 卤 39,42 N) y los almacenados durante 24 h en agua destilada (72,16 卤 39,67 N). Conclusi贸n: Se puede concluir que tanto la vibraci贸n s贸nica como el termociclado mejoraron significativamente la fuerza de uni贸n de los postes de fibra de vidrio con los dos cementos de resina evaluados
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