The aim of this study was to evaluate the bond strength of fiber posts luted with a one-step self-etching adhesive with the push-out test after phosphoric acid conditioning of the root dentin. Thirty-six single-rooted teeth were endodontically treated. Teeth were sectioned perpendicularly to the cementoenamel junction, and a 10-mm post space was prepared with a calibrated bur. Specimens were then divided into three groups according to the adhesive protocol: A, total-etch three steps; B, self-etch one step; and C, 32\% phosphoric acid conditioning and self-etch one step. Fiber posts were luted with self-curing resin-based cement. Teeth were cut in 1-mm slices and pushed until failure with an Instron machine. Results were statistically analyzed with the ANOVA and Bonferroni tests (P < .05). Two additional specimens from each group were examined under the scanning electron microscope (SEM). The 32\% phosphoric acid significantly influenced the push-out bond strength of fiber posts luted with self-etch adhesives (P < .05). SEM analysis showed a continuous hybrid layer with resin tags and lateral branches in groups A and C, while group B showed smear layer dissolution with poor infiltration of the tubules.

Fiber post adhesion to radicular dentin: The use of acid etching prior to a one-step self-etching adhesive.

SCOTTI, Nicola;MIGLIARETTI, Giuseppe;PASQUALINI, Damiano;BERUTTI, Elio
2012-01-01

Abstract

The aim of this study was to evaluate the bond strength of fiber posts luted with a one-step self-etching adhesive with the push-out test after phosphoric acid conditioning of the root dentin. Thirty-six single-rooted teeth were endodontically treated. Teeth were sectioned perpendicularly to the cementoenamel junction, and a 10-mm post space was prepared with a calibrated bur. Specimens were then divided into three groups according to the adhesive protocol: A, total-etch three steps; B, self-etch one step; and C, 32\% phosphoric acid conditioning and self-etch one step. Fiber posts were luted with self-curing resin-based cement. Teeth were cut in 1-mm slices and pushed until failure with an Instron machine. Results were statistically analyzed with the ANOVA and Bonferroni tests (P < .05). Two additional specimens from each group were examined under the scanning electron microscope (SEM). The 32\% phosphoric acid significantly influenced the push-out bond strength of fiber posts luted with self-etch adhesives (P < .05). SEM analysis showed a continuous hybrid layer with resin tags and lateral branches in groups A and C, while group B showed smear layer dissolution with poor infiltration of the tubules.
2012
43
615
623
http://www.quintpub.com/journals/qi/abstract.php?iss2_id=1043&article_id=12193&article=10&title=Fiber%20post%20adhesion%20to%20radicular%20dentin:%20The%20use%20of%20acid%20etching%20prior%20to%20a%20one-step%20self-etching%20adhesive
bond strength; fiber post; phosphoric acid; push-out; self-etch
N. Scotti;R. Rota;M. Scansetti;G. Migliaretti;D. Pasqualini;E. Berutti
File in questo prodotto:
File Dimensione Formato  
article(9).pdf

Accesso riservato

Tipo di file: PDF EDITORIALE
Dimensione 630.68 kB
Formato Adobe PDF
630.68 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/112217
Citazioni
  • ???jsp.display-item.citation.pmc??? 9
  • Scopus 19
  • ???jsp.display-item.citation.isi??? 21
social impact