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Effects of using different root canal sealers and protocols for cleaning intraradicular dentin on the bond strength of a composite resin used to reinforce weakened roots

Vansan, Luiz Pascoal ; Machado, Ricardo ; de Souza, Celso Bernardes ; Gariba, Ricardo ; da Cruz, Antônio Miranda ; Muniz, Cinara ; Jardel Francisco Mazzi-Chaves, Jardel FranciscoX ; Garcia, Lucas da Fonseca Roberti

Journal of oral research, 2022-12, Vol.11 (6), p.1-9

Universidad de Concepción

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  • Title:
    Effects of using different root canal sealers and protocols for cleaning intraradicular dentin on the bond strength of a composite resin used to reinforce weakened roots
  • Author: Vansan, Luiz Pascoal ; Machado, Ricardo ; de Souza, Celso Bernardes ; Gariba, Ricardo ; da Cruz, Antônio Miranda ; Muniz, Cinara ; Jardel Francisco Mazzi-Chaves, Jardel FranciscoX ; Garcia, Lucas da Fonseca Roberti
  • Subjects: Bond strength ; bonding agents ; cavidad pulpar ; dental pulp cavity ; dentin ; dentin-bonding agents ; dentina intrarradicular ; Fuerza de unión ; materiales de obturación del conducto radicular ; raíces debilitadas ; recubrimientos dentinarios ; root canal filling materials ; weakened roots
  • Is Part Of: Journal of oral research, 2022-12, Vol.11 (6), p.1-9
  • Description: Background: This study evaluated the effects of using different root canal sealers and protocols for cleaning intraradicular dentin on the bond strength of a composite resin used to reinforce weakened roots. Material and Methods: Sixty-four roots of extracted human maxillary canines were weakened, prepared and filled with two different endodontic sealers (Endofill and AH Plus). In half of the sample, set aside for each respective sealer, excess filling material was cleaned. In the other half, the weakened areas were not cleaned, and the excess of sealer was spread on the intraradicular dentin. Intentionally worn areas inside each root were restored with a microhybrid light-cure composite resin (Z100) to reinforce them, with and without acid etching. Prefabricated metal posts were fixed with a dual resin cement (RelyX ARC), and the specimens were submitted to a pull-out test. Statistical analysis was performed by means of Shapiro-Wilk, analysis of variance (one-way ANOVA) and Tukey-Kramer tests (pandlt;0.05). Results: The groups filled with Endofill (GI, GII, GIII, GIV) had the lowest bond strength values, which were similar among each other (pandgt;0.05).The greatest bond strength values were observed in roots filled with AH Plus (GV, GVI, GVII, GVIII), mainly without cleaning of the weakened areas, and followed by acid etching (GVII), and also with cleaning of the weakened areas, however, with no acid etching (GVI) (pandlt;0.05). Conclusion: The greatest bond strength values were observed in roots filled with AH Plus; (1) without cleaning of the weakened areas and with acid etching, and; (2) with cleaning of the weakened areas, but without acid etching.
  • Publisher: Universidad de Concepción
  • Language: English
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