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Influence of sonic vibration and cement type on the bond strength of fiberglass posts after aging / Influencia de la vibración sónica y el tipo de cemento en la fuerza de unión de los postes de fibra de vidrio después del envejecimiento
Prochnow, Rayane; Zinelli, Rafaella Ronchi; Miguel, Luiz Carlos Machado; da Cunha, Leonardo Fernandes; Correr, Gisele Maria; Gonzaga, Carla Castiglia; Filho, Flares Baratto.
  • Prochnow, Rayane; Universidade Positivo. Graduate Program of Dentistry. School of Health Sciences. Curitiba. BR
  • Zinelli, Rafaella Ronchi; Universidade Positivo. Graduate Program of Dentistry. School of Health Sciences. Curitiba. BR
  • Miguel, Luiz Carlos Machado; Universidade da Região de Joinville (UNIVILLE). School of Dentistry. Department of Operative Dentistry and Endodontics. Joinville. BR
  • da Cunha, Leonardo Fernandes; Universidade Positivo. Graduate Program of Dentistry. School of Health Sciences. Curitiba. BR
  • Correr, Gisele Maria; Universidade Positivo. Graduate Program of Dentistry. School of Health Sciences. Curitiba. BR
  • Gonzaga, Carla Castiglia; Universidade Positivo. Graduate Program of Dentistry. School of Health Sciences. Curitiba. BR
  • Filho, Flares Baratto; Universidade da Região de Joinville (UNIVILLE). School of Dentistry. Department of Operative Dentistry and Endodontics. Joinville. BR
J. oral res. (Impresa) ; 9(5): 405-413, oct. 31, 2020. ilus, graf, tab
Article in English | LILACS | ID: biblio-1179032
ABSTRACT

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°C or after thermocycling (5000 cycles, at 5°C and 55°C). The results were evaluated using three-way ANOVA and Tukey's test (α=0.05).

Results:

Significant differences were not observed between the bond strengths of dual-cured (87.93±41.81 N) and self-adhesive cement (82.53±41.43 N). Bond strength for the sonic vibration groups (100.36±42.35 N) was significantly higher than for groups without sonic vibration (70.13±34.90 N). There were significant differences between specimens subjected to thermocycling (98.33±39.42 N) and those stored for 24h in distilled water (72.16±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.
RESUMEN

Introducción:

Este estudio evaluó la influencia de la vibración sónica y el termociclado en la fuerza de unión de los postes de fibra de vidrio utilizando cementos de resina autoadhesivos y de curado dual convencionales Material y

Métodos:

Se dividieron aleatoriamente noventa y seis dientes tratados endodónticamente de raíz única en ocho grupos según el cemento utilizado (cemento de resina de curado dual o autoadhesivo), el uso de vibración sónica durante la acomodación posterior y las condiciones de envejecimiento (24 horas agua destilada o 5.000 ciclos térmicos). 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 utilizó vibración sónica, se acomodaron los postes y se aplicó la vibración sónica durante 10 s utilizando una punta especial colocada en la parte superior del poste (Sonic Smart Device, FGM). Las pruebas de extracción se realizaron después del almacenamiento en agua destilada durante 24 horas a 37ºC o después del termociclado (5000 ciclos, a 5ºC y 55ºC). Los resultados se evaluaron mediante ANOVA de tres vías y la prueba de Tukey (α = 0.05).

Resultados:

No se observaron diferencias significativas entre las resistencias de adhesión del cemento de curado dual (87,93 ± 41,81 N) y el cemento autoadhesivo (82,53 ± 41,43 N). La fuerza de unión para los grupos de vibración sónica (100,36 ± 42,35 N) fue significativamente mayor que para los grupos sin vibración sónica (70,13 ± 34,90 N). Hubo diferencias significativas entre los especímenes sometidos a termociclado (98,33 ± 39,42 N) y los almacenados durante 24 h en agua destilada (72,16 ± 39,67 N).

Conclusión:

Se puede concluir que tanto la vibración sónica como el termociclado mejoraron significativamente la fuerza de unión de los postes de fibra de vidrio con los dos cementos de resina evaluados.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Vibration / Post and Core Technique / Resin Cements / Flexural Strength / Glass Type of study: Controlled clinical trial Limits: Humans Language: English Journal: J. oral res. (Impresa) Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Positivo/BR / Universidade da Região de Joinville (UNIVILLE)/BR

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Full text: Available Index: LILACS (Americas) Main subject: Vibration / Post and Core Technique / Resin Cements / Flexural Strength / Glass Type of study: Controlled clinical trial Limits: Humans Language: English Journal: J. oral res. (Impresa) Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Positivo/BR / Universidade da Região de Joinville (UNIVILLE)/BR