An evaluation of luting agent application technique effect on fibre post retention

D’Arcangelo, Camillo; D’Amario, Maurizio; Vadini, Mirco; Zazzeroni, Simone; Angelis, Francesco De; Caputi, Sergio

doi:10.1016/j.jdent.2008.01.004

Cited by 30 publications

(29 citation statements)

References 25 publications

(18 reference statements)

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“…In the present study, there was no significant difference in the bond strength between the Centrix syringe or Lentulo drill technique, corroborating the findings of previous studies [14,[17][18][19]. The use of a Lentulo drill improved the distribution of resin cement along the root canal, with a more uniform layer and that the greater the level of cement homogeneity, the more retention of the intraradicular post [17].…”

Section: Discussionsupporting

confidence: 91%

“…In addition, as cement application around the post is usually carried out with a spatula, this may not be a reliable procedure to prevent incorporation of voids [15]. The use of lentulo drills or syringes for cement insertion could reduce the presence of voids and bubbles that could affect correct cementation of fiberglass posts [16][17][18][19]. In fact, when using the lentulo drill, caution is advised to avoid premature cement polymerization that compromises the proper insertion of the post [14,16].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Resin Cement Insertion Techniques for Luting Fiberglass Posts

Silva

Pereira

Daleprane

et al. 2016

Pesqui. bras. odontopediatria clín. integr.

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Objective: To evaluate the effect of two insertion techniques of self-adhesive dual resin cement on the bond strength of fiberglass posts in different portions of the root. The homogeneity of the cement layer along the root canal was also evaluated. Material and Methods: The root canals of 28 bovine teeth were instrumented, filled, and 14mm-space was prepared for luting fiberglass posts (Reforpost #3, Angelus), maintaining 4mm of apical sealing. The roots were randomly allocated into two groups according to the cement insertion technique (n=14): Lentulo Drill (Dentsply/Maillefer) or Centrix syringe (Dentsply). The posts were fixed with self-adhesive resin cement (RelyX U200, 3M ESPE). After 7 days, the roots were cross-sectioned to obtain three 1.0-mm-thick samples of each third of the space prepared for the post. Two samples of each third were subjected to push-out test (0.5 mm/min; 200N) and the third specimen was used for the analysis of cementation layer homogeneity. Images of specimens (40x magnification) were assessed and classified by two calibrated examiners (Kappa = 0.87) according to the presence or absence of voids and misfit. Data were analyzed by two-way ANOVA and Pearson Chi-Square test. Results: There was no statistically significant effect of insertion technique (p=0.278) or post-space thirds (p = 0.521) on bond strength of fiberglass posts. Chi-Square test showed that cement insertion with the Lentulo drill produced more cement voids than Centrix syringe (p = 0.023). Conclusion: The cement insertion technique did not influence bond strength of fiberglass posts in bovine root dentin. The use of Centrix syringe for cement insertion is preferred since it produced more homogenous cement layer.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Comparison of Resin Cement Insertion Techniques for Luting Fiberglass Posts

Silva

Pereira

Daleprane

et al. 2016

Pesqui. bras. odontopediatria clín. integr.

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“…Pullout tests 15,16) , push-out tests [17][18][19] , and microtensile tests 20) are typically used to test the adhesion at the interface between the post and the restoration material. Push-out tests and microtensile tests were inadequate to test the adhesion of the hollow post in this study because a severed specimen is required for such tests.…”

Section: Discussionmentioning

confidence: 99%

Development of a new direct core build-up method using a hollow fiber-reinforced post

et al. 2013

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We have developed a new direct construction method for core build-up starting with the hypothesis that an improvement in pullout strength and a decrease in the number of voids in the restorative material will become possible by filling a hollow fiber reinforced post with the restorative material from the bottom of the root canal. For the pullout test, the hollow post was fixed to the head of a mixing tip and inserted into the bottom of a cylinder. The restorative material was then injected through the hollow post. The pullout load of the hollow posts was significantly higher than that of the solid fiber posts. The number of voids observed in the restorative material when using the hollow post was about 1/5 of that in the case of the solid post.

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“…The effect of the resin cement thickness on the bond strength of the fiberglass post to the root canal was studied by D'Arcangelo et al 20 They found that when the resin cement thickness was too thick, the bond strength was significantly reduced. Similar studies 21,22 have reported that the resin cement thickness significantly affects the adhesion because an overly thick layer of resin cement is related to greater frequency of adhesion loss between the fiberglass post and the root canal.…”

Section: Rp U200mentioning

confidence: 99%

Relined fiberglass post: an ex vivo study of the resin cement thickness and dentin-resin interface

et al. 2016

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The aim of this study was to evaluate the thickness of resin cements in the root thirds when using conventional fiberglass posts (CP) and relined fiberglass posts (RP) in weakened roots and to evaluate the morphological characteristics of the dentin-resin interface. Forty human maxillary anterior teeth had the crown sectioned below the cemento-enamel junction. The canals were endodontically treated and weakened with diamond burs. Teeth were divided into four groups (n = 10): Group 1 -CP + RelyX ARC; Group 2 -CP + RelyX U200; Group 3 -RP + RelyX ARC; and Group 4 -RP + RelyX U200. Prior to luting, 0.1% Fluorescein and 0.1% Rhodamine B dyes were added to an adhesive and resin cement, respectively. Slices were obtained from the apical, middle, and cervical thirds of the root. Confocal laser scanning microscopy images were recorded in four areas (buccal, lingual, mesial, distal) of each third. In each area, four equidistant measures of the resin cement were made and the mean value was calculated. The interface morphology was observed. The data were submitted to three-way ANOVA and Tukey's test (α = 0.05). The interaction between fiberglass posts, resin cement, and root thirds was significant (p < 0.0001). The resin cement thicknesses were significantly lower for RP in comparison with CP, except in the apical third. There was no significant difference between the resin cements for RP. There was formation of resin cement tags and adhesive tags along the root for RP. RP favored the formation of thin and uniform resin cement films and resin tags in weakened roots.

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An evaluation of luting agent application technique effect on fibre post retention

Cited by 30 publications

References 25 publications

Comparison of Resin Cement Insertion Techniques for Luting Fiberglass Posts

Comparison of Resin Cement Insertion Techniques for Luting Fiberglass Posts

Development of a new direct core build-up method using a hollow fiber-reinforced post

Relined fiberglass post: an ex vivo study of the resin cement thickness and dentin-resin interface

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