The effect of surface modification on the retention strength of polyetheretherketone crowns adhesively bonded to dentin abutments

Abstract

STATEMENT OF PROBLEM: The mechanical properties of polyetheretherketone (PEEK) make it an ideal material for fixed dental prostheses; however, insufficient information is available about the cementation of these restorations. PURPOSE: The purpose of this study was to evaluate the retention strength of differently pretreated and conditioned PEEK crowns luted to dental abutments. MATERIAL AND METHODS: Human teeth were prepared in a standardized manner, and PEEK crowns were milled (N=160, n=10 per group) and conditioned as follows: airborne-particle abrasion, sulfuric etching, piranha etching, and no conditioning. These groups were divided into adhesive systems: visio.link, Signum PEEK Bond, Ambarino P60, and no adhesive and luted to dentin abutments. After water storage (60 days) and thermocycling (5000 cycles, 5°C/55°C), the retention strength of the crowns was determined with a pull-off test, and failure types were classified. The data were analyzed with the Kruskal-Wallis, 1-way ANOVA, and (2) test (=.05). RESULTS: Crowns that were unconditioned and piranha etched and/or adhesively untreated or pretreated with Ambarino P60 had the lowest retention strength. The highest values were found for the airborne-particle abrasion and sulfuric etched groups and/or crowns adhesively pretreated with Signum PEEK Bond and visio.link. Composite resin cement that remained on dentin was observed more frequently for unconditioned groups in combination with Ambarino P60 and no adhesive pretreatment. Mixed failure types were found more frequently in the airborne-particle abrasion group in combination with visio.link, Signum PEEK Bond, and no adhesive pretreatment, in the sulfuric acid etched group combined with Ambarino P60 and no adhesive pretreatment, and after the piranha acid pretreatment in combination with visio.link or Signum PEEK Bond. CONCLUSIONS: The adhesion of the tested PEEK crowns to dentin was satisfactory after treatment with airborne-particle abrasion or etching with sulfuric acid and/or when additional adhesive systems such as visio.link or Signum PEEK Bond were used. The effect of surface modification on the retention strength of PEEK crowns adhesively bonded to dentin abutments Statement of problem. The mechanical properties of polyetheretherketone (PEEK) make it an ideal material for fixed dental prostheses (FDPs); however, insufficient information is available about the cementation of these restorations.Purpose. The purpose of this study was to evaluate the retention strength of differently pretreated and conditioned PEEK crowns luted to dental abutments. Material and methods.Human teeth were prepared in a standardized manner and PEEK crowns were milled (N=160, n=10 per group) and conditioned as follows: airborne-particle abrasion, sulfuric etching, piranha etching, and no conditioning. These were divided into adhesive systems: visio.link, Signum PEEK Bond, Ambarino P60, and no adhesive and luted to dentin abutments. After water storage (60 days) and thermocycling (5000 cycles, 5°C/55°C), the retent...

Fracture load and failure types of different veneered polyetheretherketone fixed dental prostheses

“…The resulting pontics (Fig. 1b) [14,15,16,20,21,24] with this material, conditioning was carried out by wetting the frameworks with a thin film using a microbrush which was immediately polymerized for 90 s (intensity: 220 mW/cm², Brelux Power Unit; bredent) ( Fig. 1c), before a thin film of opaquer (Opaquer combo.lign; bredent) was applied and polymerized for 360 s (Fig.…”

“…A variety of studies of bond strength between veneering resin composite and PEEK-framework have been performed already, in which different pre-treatments of the airborne-particle abraded surface with piranha-etching [13,14,15,16], sulfuric acid [5,9,12,17] and cold plasma treatment [18,19] were tested, providing, however, some conflicting results. Some of these studies examined the influence of the adhesive on the bond strength to PEEK and the vast majority showed nevertheless adequate bonding results with MMA-based adhesive materials comparable to those of conventional framework materials like ceramic or metal alloys [14,15,16,20,21,22].…”

“…Some of these studies examined the influence of the adhesive on the bond strength to PEEK and the vast majority showed nevertheless adequate bonding results with MMA-based adhesive materials comparable to those of conventional framework materials like ceramic or metal alloys [14,15,16,20,21,22].…”

Effect of different surface pretreatments and adhesives on the load-bearing capacity of veneered 3-unit PEEK FDPs

“…Some studies have investigated the bonding characteristics of PEEK and composite resins, 3,4,[6][7][8][9][10][11][12][13][14] and several studies have reported that a surface pretreatment using sulfuric acid improved the bond strength to composite resin materials. 3,4,6,13 Some studies also assessed the bond strength of resin cements after etching with piranha solution.…”

“…3,4,6,13 Some studies also assessed the bond strength of resin cements after etching with piranha solution. 8,9,11,15 These studies, however, reported conflicting results: While some studies observed no effect of piranha acid etching on the bond properties, 8,9,15 one investigation reported higher bond strength, especially when applying an adhesive on airborne-particle-abraded and piranha-etched PEEK as compared with etching alone. 11 In addition, the influence of different adhesives on bond strengths to PEEK has also been investigated.…”