Three-unit reinforced polyetheretherketone composite FDPs: Influence of fabrication method on load-bearing capacity and failure types

Stawarczyk, Bogna; Eichberger, Marlis; Uhrenbacher, Julia; Wimmer, Timea; Edelhoff, Daniel; Schmidlin, Patrick R.

doi:10.4012/dmj.2013-345

Cited by 155 publications

(161 citation statements)

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“…7 In the latter study, different plasma treatment parameters were tested, such as different plasma treatment times (5 to 120 seconds), pressures (0.05 to 0.6 MPa), and different gas (argon/helium),;however, no impact on the fracture load results was observed. A previous study examined the fracture load of 3-unit PEEK frameworks without veneering and showed a mean fracture load of 1383 N. 3 Another study tested the effect of the fabrication method of monolithic PEEK FDPs and observed fracture loads ranging between 1738 and 2354 N. 22 In both studies, no aging was performed. In the present study, groups without pretreatment and adhesive application with visio.link combined with Signum For comparability reasons, all specimens were artificially aged with thermocycling.…”

Section: Discussionmentioning

confidence: 99%

“…21 FDPs created with computer-aided design/computer-aided manufacturing (CAD/CAM) showed lower deformation and higher fracture load than pressed ones. 22 A study examining nonveneered 3-unit PEEK frameworks with a rather small connector diameter of 7.4 mm 2 showed a deformation of the FDPs at 1200 N and fracture in the connector of the FDPs at 1385 N. 3 If 400 N is considered the average maximum mastication 4 force in the load-bearing posterior area, 23 the laboratory results are increased by at least a factor of 2.3, 24 Therefore, PEEK was suggested as a material for FDPs.…”

Section: 18mentioning

confidence: 99%

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

Stawarczyk

Thrun

Eichberger

et al. 2015

The Journal of Prosthetic Dentistry

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STATEMENT OF PROBLEM Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses (FDPs). However, information about the fracture load of veneered PEEK FDPs is still scarce. PURPOSE The purpose of this in vitro study was to investigate the influence of different PEEK surface pretreatments and adhesive systems on the fracture load of 2 differently veneered FDPs. MATERIAL AND METHODS Four hundred eighty anatomically shaped 3-unit PEEK frameworks were milled, airborne-particle abraded with 50 m alumina powder, and divided into 4 groups according to the following surface pretreatment (n=120): plasma treatment, etching with either sulfuric acid or piranha solution, and no further treatment. All groups were then allocated to 4 conditioning groups: visio.link, Ambarino P60, Signum PEEK Bond, or no conditioning. They were veneered with Signum Composite (n=15) or Signum Ceramis (n=15). Upon completion, the FDPs were thermally aged, and fracture loads and failure types were determined. Statistical analysis was performed with 3/2/1-way ANOVA with the post hoc Tukey HSD test (=.05). RESULTS The highest fracture loads were achieved without treatment in combination with visio.link (737 ±138 N). The lowest values were obtained after piranha acid etching and conditioning with visio.link (277 ±71 N); both groups were veneered with Signum Composite. The results, however, indicated no clear influence of either pretreatment or conditioning. With few exceptions, FDPs veneered with Signum Composite showed higher fracture load values compared to Signum Ceramis. After thermocycling, all FDPs showed cracks in the veneering composite resin material in the pontic region, regardless of the PEEK pretreatment or the adhesive system used. After loading, no fractures of the PEEK frameworks were evident in any FDPs, but chipping of the veneering material was observed. CONCLUSIONS With respect to the fracture types after thermocycling, pretreatment, conditioning, or veneering resin cement did not affect the fracture results.

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Section: Discussionmentioning

confidence: 99%

Section: 18mentioning

confidence: 99%

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

Stawarczyk

Thrun

Eichberger

et al. 2015

The Journal of Prosthetic Dentistry

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“…12 As confirmed in this study, industrially fabricated CAD/CAM materials show a reduced risk of porosities and therefore higher and more solid mechanical properties. 16 Another study reported negative effects on surface properties when microhybrid composite resin was stored in saliva, alcohol, and bacterial acid. However, the pH changes seemed not to intensify surface degradation.…”

Section: Discussionmentioning

confidence: 99%

“…PEEK shows remarkable mechanical properties 13,14 and has been evaluated for use for FDPs in load-bearing areas. [15][16][17] However, PEEK restorations have a grayish-brown or pearl-white opaque color and need to be veneered with composite resin. Previous studies obtained adequate bond strength to composite resin cements when PEEK surfaces were pretreated and conditioned using adhesive systems contains MMA-monomers.…”

Section: Introductionmentioning

confidence: 99%

Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media

Liebermann

Wimmer

Schmidlin

et al. 2016

The Journal of Prosthetic Dentistry

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STATEMENT OF PROBLEM: Polyetheretherketone (PEEK) can be used to support fixed dental prostheses. However, information about physicomechanical characterization is still scarce. PUR-POSE: The purpose of this in vitro study was to assess effects of different aging regimens/durations on roughness, solubility, water absorption, Martens hardness (HM), and indentation modulus/EIT on different computer-aided design and computer-aided manufacturing (CAD/CAM) polymers. MATERIAL AND METHODS: Forty standardized specimens of the following materials were fabricated: PEEK: Dentokeep (DK); hybrid material: VITA Enamic (EN); composite resins: LAVA Ultimate (LU) and an experimental CAD/CAM nanohybrid-composite resin (EX); poly(methyl methacrylate) (PMMA)-based: VITA CAD-Temp (CT); Telio CAD (TC), artBloc Temp (AT), and ZENOTEC ProFix (ZP). A nanofilledpolymer for interim restorations, Protemp 4 (CG), served as the control group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and EIT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the post hoc Scheffé tests (=.05). RESULTS: Storage media had no effect on surface roughness and water absorption. Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were observed for the hybrid material EN, followed by LU and EX. CONCLUSIONS: The hardness parameters of PEEK were comparable with those of PMMA-based materials. group. Specimens were stored in sodium chloride, artificial saliva, physiological saliva, and distilled water at 37°C for 1, 7, 14, 28, 90, and 180 days. Roughness, water absorption, HM, and E IT were investigated after each storage period; solubility was determined after 180 days only. Data were analyzed using weighted 3/2/1-way ANOVA and the posthoc Scheffé tests (α=05).Results. Storage media had no effect on surface roughness and water absorption.Physiological saliva revealed the highest significant impact on solubility followed by artificial saliva, sodium chloride, and distilled water. Water absorption increased significantly with storage duration. PEEK showed the lowest solubility and water absorption values. The highest ! ! ! 2! solubility was observed for the conventional polymer CG, and the highest water absorption was found for the composite LU. PMMA-based TC, ZP, CG, and AT showed the lowest HM and indentation modulus, followed by CT, and PEEK. The highest values were ...

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“…In contrast, PEEK FDPs without veneering showed much higher fracture load results (2354 N) [10]. Because esthetic concerns remain an important clinical reality and benchmark, veneered FDPs should always be assessed, especially because they contrast with standard tests with simplified geometric specimens.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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OBJECTIVE The aim of this study is to investigate the fracture load of different veneered PEEK 3-unit fixed dental prosthesis (FDPs) after different aging regimens. METHODS Congruently anatomically shaped 3-unit FDPs were milled using a master stl-data set and randomly divided into four groups (N = 120, n = 30 per veneering group), which were veneered using different veneering methods: (i) digital veneering with breCAM.HIPC, (ii) conventional veneering with crea.lign, (iii) conventional with crea.lign paste, and (iv) using pre-manufactured veneers visio.lign. The FDPs were then adhesively cemented on a metal abutment and fracture loads were measured in a universal testing machine (1 mm/min) before and after aging (10,000 thermal cycles, 5/55°C). Two-and one-way ANOVA followed by post hoc Scheffé tests were used for data analysis (p < 0.05). RESULTS This investigation showed an influence of the veneering method on the fracture load results independent of the aging level. The highest fracture load was measured for the FDPs with digital veneering (1882 ± 152 N at baseline, 2021 ± 184 N after thermocycling). The remaining groups showed comparable results, and no impact of thermal aging was observed. Digital and conventional veneers showed cracks in the pontic region starting from the connector area as a main failure type after loading, while the pre-manufactured veneers showed predominantly adhesive failures. CONCLUSIONS The digital veneering method showed the highest fracture load resistance. Thermal aging showed no impact on the fracture load of all tested veneered PEEK 3-unit FDPs. CLINICAL RELEVANCE According to this study results, reliable veneering of PEEK FDPs can be achieved with digital veneering. Clinical relevance According to this study results, reliable veneering of PEEK FDPs can be achieved with digital veneering.

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Three-unit reinforced polyetheretherketone composite FDPs: Influence of fabrication method on load-bearing capacity and failure types

Cited by 155 publications

References 25 publications

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

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

Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media

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

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