Suitability of the new Aryl-Ketone-Polymer indicated for removable partial dentures: Analysis of elastic properties and bond strength to denture resin

Lümkemann, Nina; Eichberger, Marlis; Murphy, Ryan J.; Stawarczyk, Bogna

doi:10.4012/dmj.2019-125

Cited by 7 publications

(8 citation statements)

References 40 publications

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“…Notably, the exclusion of primer smearing might have contributed to the lower SBS values in this study. MMA-based primers, such as visio.link (bredent, Senden, Germany) or HC primer (Shofu, Kyoto, Japan), have been reported in the literature to enhance bond strength between inert surfaces of high-performance polymer-based materials [ 18 , 23 ]. Incorporating a discussion on primer smearing in future considerations could lead to higher SBS values.…”

Section: Discussionmentioning

confidence: 99%

“…Mechanical pretreatment typically involves air-abrasion using alumina oxide particles [ 20 , 21 ], with optimal parameters being a blasting pressure of 2 bar and an alumina particle size of 110 μm [ 22 ]. Chemical pretreatment often involves applying a primer containing methyl methacrylate (MMA) to the surface of PEEK, effectively enhancing its bonding properties [ 23 , 24 ]. Concentrated acid etching is mainly accomplished using a piranha solution and sulfuric acid.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Dental Cement Bond Strength with Autofocus-Laser-Cutter-Generated Grooves on Polyetheretherketone Surfaces

Peng,

Ma,

Lee

et al. 2023

Polymers

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Polyetheretherketone (PEEK) is widely used in dentistry owing to its exceptional properties, including its natural appearance; however, existing surface treatment methods for bonding PEEK have limitations. Autofocus laser cutters, known for their precise engraving and cutting capabilities, offer potential for surface treatment of PEEK; thus, the objective of this study was to investigate the creation of laser groove structures on PEEK to enhance its bonding capability with dental resin cement. A dental computer-aided design and manufacturing system was used to fabricate PEEK samples, and three groove patterns (circle, line, and grid) were generated on PEEK surfaces, with air-abrasion used as the control group. The surface characteristics, cell viability, and bond strength were evaluated, and the data were statistically analyzed using one-way analysis of variance and post hoc Tukey’s tests (α = 0.05). Laser-treated PEEK exhibited a uniform texture with a groove depth of approximately 39.4 µm, hydrophobic properties with a contact angle exceeding 90°, a surface roughness of 7.3–12.4 µm, consistent topography, and comparable cell viability compared with untreated PEEK. Despite a decrease in bond strength after thermal cycling, no significant intergroup differences were observed, except for the line-shaped laser pattern. These findings indicate that the autofocus laser cutter effectively enhances the surface characteristics of PEEK by creating a uniform texture and grooves, showing promise in improving bonding properties, even considering the impact of thermal cycling effects.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing Dental Cement Bond Strength with Autofocus-Laser-Cutter-Generated Grooves on Polyetheretherketone Surfaces

Peng,

Ma,

Lee

et al. 2023

Polymers

View full text Add to dashboard Cite

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“…It is known that the bonding mechanism between adherent and substrate materials includes chemical preprocessing (i.e., priming, acid etching, etc.) [30,31], mechanical preprocessing (i.e., sandblasting, lasering) [32,33], or a combination of both methods. Within the present study, all testing materials were treated with sandblasting pretreatment (SB group), priming pretreatment (PR group), or a combination pretreatment of sandblasting and priming (AP group).…”

Section: Discussionmentioning

confidence: 99%

“…Different surface pretreatment methods led to inverse SBS results ( Table 2). The aim of sandblasting (SB group) was to increase the surface roughness of substrate materials and increase the mechanical interlocking of denture acrylic and substrate materials, further increasing the bonding durability [32,33]. When compared to the PR group (8.36 ± 2.61-9.76 ± 1.17 MPa) and the AP group (11.80 ± 4.63-12.47 ± 4.84 MPa), the Co-Cr alloy and zirconia-based materials showed the lowest SBS values in the SB group (1.83 ± 0.48-4.62 ± 1.24 MPa).…”

Section: Discussionmentioning

confidence: 99%

Bonding and Thermal Cycling Performances of Two (Poly)Aryl–Ether–Ketone (PAEKs) Materials to an Acrylic Denture Base Resin

et al. 2021

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Poly(aryl–ether–ketone) materials (PAEKs) are gaining interest in everyday dental practices because of their natural properties. This study aims to analyze the bonding performance of PAEKs to a denture acrylic. Testing materials were pretreated by grinding, sandblasting, and priming prior to polymerization with the denture acrylic. The surface morphologies were observed using a scanning electron microscope and the surface roughness was measured using atomic force microscopy. The shear bond strength (SBS) values were determined after 0 and 2500 thermal cycles. The obtained data were analyzed using a paired samples t-test and Tukey's honestly significant difference (HSD) test (α = 0.05). The surface characteristics of testing materials after different surface pretreatments showed obvious differences. PAEKs showed lower surface roughness values (0.02–0.03 MPa) than Co-Cr (0.16 MPa) and zirconia (0.22 MPa) after priming and sandblasting treatments (p < 0.05). The SBS values of PAEKs (7.60–8.38 MPa) met the clinical requirements suggested by ISO 10477 (5 MPa). Moreover, PAEKs showed significantly lower SBS reductions (p < 0.05) after thermal cycling fatigue testing compared to Co-Cr and zirconia. Bonding performance is essential for denture materials, and our results demonstrated that PAEKs possess good resistance to thermal cycling fatigue, which is an advantage in clinical applications. The results imply that PAEKs are potential alternative materials for the removable of prosthetic frameworks.

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“…PAEKs may be processed with different manufacturing techniques including milling, vacuum pressing from pellets or granules, and fused filament fabrication [ 28 ]. PAEKs contain no MA monomers, are free of metals, and are chemically inert, which makes them interesting alternatives for patients with allergies [ 29 ] and for a variety of clinical applications in prosthetic dentistry such as fixed and removable dental prostheses or implant abutments [ 29 , 30 , 31 ]. Regarding bacterial adhesion and biofilm formation on PAEKs, scientific evidence is limited [ 1 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Bacterial Adhesion on Dental Polymers as a Function of Manufacturing Techniques

et al. 2023

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The microbiological behavior of dental polymer materials is crucial to secure the clinical success of dental restorations. Here, the manufacturing process and the machining can play a decisive role. This study investigated the bacterial adhesion on dental polymers as a function of manufacturing techniques (additive/subtractive) and different polishing protocols. Specimens were made from polyaryletherketone (PEEK, PEKK, and AKP), resin-based CAD/CAM materials (composite and PMMA), and printed methacrylate (MA)-based materials. Surface roughness (Rz; Ra) was determined using a laser scanning microscope, and SFE/contact angles were measured using the sessile drop method. After salivary pellicle formation, in vitro biofilm formation was initiated by exposing the specimens to suspensions of Streptococcus mutans (S. mutans) and Streptococcus sanguinis (S. sanguinis). Adherent bacteria were quantified using a fluorometric assay. One-way ANOVA analysis found significant influences (p < 0.001) for the individual parameters (treatment and material) and their combinations for both types of bacteria. Stronger polishing led to significantly (p < 0.001) less adhesion of S. sanguinis (Pearson correlation PC = −0.240) and S. mutans (PC = −0.206). A highly significant (p = 0.010, PC = 0.135) correlation between S. sanguinis adhesion and Rz was identified. Post hoc analysis revealed significant higher bacterial adhesion for vertically printed MA specimens compared to horizontally printed specimens. Furthermore, significant higher adhesion of S. sanguinis on pressed PEEK was revealed comparing to the other manufacturing methods (milling, injection molding, and 3D printing). The milled PAEK samples showed similar bacterial adhesion. In general, the resin-based materials, composites, and PAEKs showed different bacterial adhesion. Fabrication methods were shown to play a critical role; the pressed PEEK showed the highest initial accumulations. Horizontal DLP fabrication reduced bacterial adhesion. Roughness < 10 µm or polishing appear to be essential for reducing bacterial adhesion.

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Suitability of the new Aryl-Ketone-Polymer indicated for removable partial dentures: Analysis of elastic properties and bond strength to denture resin

Cited by 7 publications

References 40 publications

Enhancing Dental Cement Bond Strength with Autofocus-Laser-Cutter-Generated Grooves on Polyetheretherketone Surfaces

Enhancing Dental Cement Bond Strength with Autofocus-Laser-Cutter-Generated Grooves on Polyetheretherketone Surfaces

Bonding and Thermal Cycling Performances of Two (Poly)Aryl–Ether–Ketone (PAEKs) Materials to an Acrylic Denture Base Resin

Bacterial Adhesion on Dental Polymers as a Function of Manufacturing Techniques

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