Tooth surface treatment strategies for adhesive cementation

Abstract

PURPOSEThe aim of this study was to evaluate the effect of tooth surface pre-treatment steps on shear bond strength, which is essential for understanding the adhesive cementation process.MATERIALS AND METHODSShear bond strengths of different cements with various tooth surface treatments (none, etching, priming, or etching and priming) on enamel and dentin of human teeth were measured using the Swiss shear test design. Three adhesives (Permaflo DC, Panavia F 2.0, and Panavia V5) and one self-adhesive cement (Panavia SA plus) were included in this study. The interface of the cement and the tooth surface with the different pre-treatments was analyzed using SEM. pH values of the cements and primers were measured.RESULTSThe highest bond strength values for all cements were achieved with etching and primer on enamel (25.6 ± 5.3 - 32.3 ± 10.4 MPa). On dentin, etching and priming produced the highest bond strength values for all cements (8.6 ± 2.9 - 11.7 ± 3.5 MPa) except for Panavia V5, which achieved significantly higher bond strengths when pre-treated with primer only (15.3 ± 4.1 MPa). Shear bond strength values were correlated with the micro-retentive surface topography of enamel and the tag length on dentin except for Panavia V5, which revealed the highest bond strength with primer application only without etching, resulting in short but sturdy tags.CONCLUSIONThe highest bond strength can be achieved for Panavia F 2.0, Permaflo DC, and Panavia SA plus when the tooth substrate is previously etched and the respective primer is applied. The new cement Panavia V5 displayed low technique-sensitivity and attained significantly higher adhesion of all tested cements to dentin when only primer was applied.

Enhancement of dentin bond strength of resin cement using new resin coating materials

“…These findings suggest that a strong bond exists at the interface between dentin and V5. The results corresponded to that of previous studies 16,21) . The selfcuring interaction between the primer, which contains co-initiators, and the resin cement, which contains an initiator, may initiate conversion when they are in contact without light curing 16) .…”

Non-thermal plasma increase bond strength of zirconia to a resin cement

“…The material system consists of a dual-curing resin cement and a one-bottle MDP-based self-etching primer which enables improvement in bond compatibility and long-term color stability [28]. The novelty of Panavia V5 (PV5) is to simplify a conventional adhesive cement system, combining easy handling, by using a single bottle primer without previous etching, as well as being automix version [28,29]. The incorporation of a self-etch component and a multi-step adhesive into a single cement system reduces technique-sensitivity and facilitates daily clinic routines.…”

Longevity of indirect restorations cemented with self‐adhesive resin luting with and without selective enamel etching. A Systematic review and meta‐analysis

“…8 Furthermore, when acid etching of the enamel is done prior to the application of self-etching adhesive systems, 28 the topography of enamel is enhanced, changing it from a low-reactive surface to a surface that is more susceptible to adhesion due to its higher surface free energy, resulting in a best bonding quality. 32 In this sense, the percentage of continuous margins without defects is greater, indicating that this procedure must be performed before cementation. 2 Although there are in vitro studies regarding the subject, there are still few in vivo studies that evaluate the longevity of indirect restorations cemented with this cement and compare it with the prior use of phosphoric acid in enamel, with the aim of increasing its capacity of adhesion.…”

“…Systems that use acid etching continue to be the most reliable in maintaining durable enamel bonding . Furthermore, when acid etching of the enamel is done prior to the application of self‐etching adhesive systems, the topography of enamel is enhanced, changing it from a low‐reactive surface to a surface that is more susceptible to adhesion due to its higher surface free energy, resulting in a best bonding quality . In this sense, the percentage of continuous margins without defects is greater, indicating that this procedure must be performed before cementation .…”