Effect of Adhesive Cementation Strategies on the Bonding of Y-TZP to Human Dentin

Abstract

This study evaluated the effects of different adhesive strategies on the adhesion of zirconia to dentin using conventional and self-adhesive cements and their corresponding adhesive resins. The occlusal parts of human molars (N=80) were sectioned, exposing the dentin. The teeth and zirconia cylinders (N=80) (diameter=3.4 mm; height=4 mm) were randomly divided into eight groups according to the factors "surface conditioning" and "cement type" (n=10 per group). One conventional cement (CC: RelyX ARC, 3M ESPE) and one self-adhesive cement (SA: RelyX U200, 3M ESPE) and their corresponding adhesive resin (for CC, Adper Single Bond Plus; for SA, Scotchbond Universal Adhesive-SU) were applied on dentin. Zirconia specimens were conditioned either using chairside (CJ: CoJet, 30 μm, 2.5 bar, four seconds), laboratory silica coating (RC: Rocatec, 110 μm, 2.5 bar, four seconds), or universal primer (Single Bond Universal-UP). Nonconditioned groups for both cements acted as the control (C). Specimens were stored in water (37°C, 30 days) and subjected to shear bond strength (SBS) testing (1 mm/min). Data (MPa) were analyzed using two-way analysis of variance and a Tukey test (α=0.05). While surface conditioning significantly affected the SBS values (p=0.0001) (C<RC=CJ=UP), cement type did not (p=0.148) (CC=SA). The interaction terms were significant (p=0.014). Failure types were predominantly adhesive. Air-abrasion and the use of the universal primer improved the bond strength of zirconia to dentin compared to the control group, regardless of the type of resin cement used.

Shear Bond Strength of Al2O3 Sandblasted Y-TZP Ceramic to the Orthodontic Metal Bracket

“…However, band is unaesthetic in the anterior, which requires esthetic compared with the posterior, and may irritate the gingiva. Thus, there is a great interest in developing methods for maintaining bonded brackets directly on restoratives, and appropriate surface treatment methods have been devised [17,18,19]. …”

“…As surface treatment methods become more complicated, the clinical application of these methods become more difficult, which means that finding a simple method to enhance the bond strength becomes imperative. To increase the bond strength, a variety of surface treatments [17,18,19] such as rough polishing, sandblasting with high strength particles, glass coating, acid etching, laser treatment, and primer treatments have been reported [14,20,21,22,23]. …”

Fracture Behavior of Minimally Invasive, Posterior, and Fixed Dental Prostheses Manufactured from Monolithic Zirconia

“…Because the bond strength of the luting material used in this study differs substantially when bonded to CoCr alloy or to dentin, use of different abutment materials might have affected this also. With regard to debonding, however, evidence from preclinical and clinical research suggests the resin/zirconia interface was the weakest link, determining the final bond strength of the abutment/restoration complex . Future FEA might provide additional insight into possible changes in stress distribution within restorations and abutments if use of different abutment materials is compared.…”

Effects of calcium hydroxide reagent on the bond strength of resin cements to root dentin and the retention force of FRC posts

“…Bond strength significantly varied among the types of adhesive resin cements used. A number of studies have been undertaken to compare the bond strength of various resin cements to dentin 8,21,[23][24][25][26]28) . Most of these studies reported that adhesive resin cements, that require pretreatment, have higher bond strength compared to self-adhesive resin cements 23,24,26) .…”

“…Evaluation methods for bond strength of dental materials in dentistry usually include the micro-tensile and shear bond strength test 8,[21][22][23][24][25][26] . Root dentin has lower potential for bonding with less exposure of dentinal tubules compared to coronal dentin 27) ; reagents used during root canal treatment can affect bond strength even more 13,22) .…”