Influence of different adhesion strategies on glass fiber post retention

Abstract

Background Failures in glass fiber post (GFP) retention may be associated with low adhesion achieved in root dentin. Material and Methods 55 single-rooted premolars were endodontically treated and distributed according to different adhesion strategies (n=11): G1: RelyX ARC (3M ESPE; etch-rinse strategy); G2: Relyx Ultimate (3M ESPE; etch-rinse strategy); G3: AllCem (FGM; etch-rinse strategy); G4: Relyx Ultimate (3M ESPE; self-etching strategy); G5: RelyX U200 (3M ESPE; self-adhesive strategy). For Bonding Strength (BS) analysis, the roots were sectioned in slices (1.0mm thickness) corresponding to each root third and submitted to push-out test. The type of failure was assessed by scanning electron microscopy (SEM). Results The highest BS averages were found in G2 and G3. However, in the middle and apical root thirds, G3 showed statistically similar results to G4 and G5. In the cervical and middle third, G1 was statistically similar to G4 and G5. The mixed type of failure was the most common in all groups. Conclusions Self-etching (G4) and self-adhesive resin (G5) cements, showed similar BS results of immediate bonding in the cementation of GFP compared to conventional resin cements (G1, G2, G3). Key words: Dental Cements, Dentin-Bonding Agents, Post and Core Technique, Dental Bonding.

Contemporary Concepts of Adhesive Cementation of Glass-Fiber Posts: A Narrative Review

“…However, in the middle and the apical third, the group with the conventional resin cement combined with an etch-and-rinse adhesive system showed similar results to the group with the conventional resin cement combined with the self-etch adhesive system and the group with the self-adhesive resin cement. Scanning electron microscopy showed that conventional resin cements combined with etch-and-rinse adhesive systems created a more uniform hybrid layer with a greater number of resin tags compared to the hybrid layer created by the conventional resin cement combined with the self-etch adhesive system or the self-adhesive resin cement [ 34 ].…”

Effect of Dentin Irrigants on Push-Out Bond Strength in Resin Cementation Protocols for Fiber Posts in Endodontically Treated Teeth: An In Vitro Study

“…This acid removes the inorganic tissue inside and around the tubules, especially in the tubules perpendicular to the dentin surface [ 51 ]. The lengths of these tags range from 10 to 25 µm, except in those treated with universal adhesive, which show shorter length, lower density, and a thinner hybrid layer [ 52 ]. However, the resistance levels were similar, possibly due to the chemical binding of the MDP monomer to the residual hydroxyapatite linked to collagen fibers and the low solubility of the formed calcium salt [ 7 , 9 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 ].…”

Effect of Dentin Irrigants on Push-Out Bond Strength in Resin Cementation Protocols for Fiber Post in Endodontically Treated Teeth: An In Vitro Study

“…This acid removes the inorganic tissue inside and around the tubules, especially in the tubules perpendicular to the dentin surface [51]. The length of these tags ranges from 10 to 25 µm, except in those treated with Universal adhesive, which show shorter length, lower density, and a thinner hybrid layer [52]. However, the resistance levels are similar, possibly due to the chemical binding of the MDP monomer to the residual hydroxyapatite linked to collagen fibers and the low solubility of the formed calcium salt [7,9,[52][53][54][55][56][57][58][59][60][61][62].…”