Fracture behavior of cancellous bone and cancellous bone-PMMA bone cement interface: An experimental study using an integrated methodology (wedge splitting test and Heaviside-based digital image correlation)

Bokam, P.; Germaneau, Arnaud; Brèque, Cyril; Rigoard, Philippe; Vendeuvre, Tanguy; Valle, Valéry

doi:10.1016/j.jmbbm.2021.104663

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…It is located in the range of 33.0 MPa~51.4 MPa for tensile strength f t which has been reported in related literature [17][18][19][20][21]. The average value of fracture toughness K IC was 1.77 MPa • m 1/2 , which likewise falls within the range of 1.0 MPa • m 1/2 ~2.7 MPa • m 1/2 as reported by related literature [10][11][12][13][14][15][16][17]. In addition, the minimum value f min t of tensile strength was 26.29 MPa.…”

Section: Raw Data Of the Experimentssupporting

confidence: 73%

A Three-Parameter Weibull Distribution Method to Determine the Fracture Property of PMMA Bone Cement

Cao

Guan

et al. 2022

Polymers

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Poly (methyl methacrylate) (PMMA) bone cement is an excellent biological material for anchoring joint replacements. Tensile strength ft and fracture toughness KIC have a considerable impact on its application and service life. Considering the variability of PMMA bone cement, a three-parameter Weibull distribution method is suggested in the current study to evaluate its tensile strength and fracture toughness distribution. The coefficients of variation for tensile strength and fracture toughness were the minimum when the characteristic crack of PMMA bone cement was αch∗=8dav. Using the simple equation αch∗=8dav and fictitious crack length Δαfic=1.0dav, the mean value μ (= 43.23 MPa), minimum value ftmin (= 26.29 MPa), standard deviation σ (= 6.42 MPa) of tensile strength, and these values of fracture toughness (μ = 1.77 MPa⋅m1/2, KICmin = 1.02 MPa⋅m1/2, σ = 0.2644 MPa⋅m1/2) were determined simultaneously through experimental data from a wedge splitting test. Based on the statistical analysis, the prediction line between peak load Pmax and equivalent area Ae1Ae2 was obtained with 95% reliability. Nearly all experimental data are located within the scope of a 95% confidence interval. Furthermore, relationships were established between tensile strength, fracture toughness, and peak load Pmax. Consequently, it was revealed that peak load might be used to easily obtain PMMA bone cement fracture characteristics. Finally, the critical geometric dimension value of the PMMA bone cement sample with a linear elastic fracture was estimated.

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Section: Raw Data Of the Experimentssupporting

confidence: 73%

A Three-Parameter Weibull Distribution Method to Determine the Fracture Property of PMMA Bone Cement

Cao

Guan

et al. 2022

Polymers

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“…Therefore, polyurethane foam is considered a suitable substitute material for cancellous bone in quasi-static tests. In contrast, polyurethane foam shows brittle material behaviour in fracture tests and may not be suitable for this type of testing 49 . A major advantage is that fewer specimens are required with polyurethane foam compared to tests with bone tissue 14 .…”

Section: Discussionmentioning

confidence: 99%

Influence of thread design on anchorage of pedicle screws in cancellous bone: an experimental and analytical analysis

Weidling

Heilemann

Schoenfelder

et al. 2022

Sci Rep

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Threads of modern pedicle screws can vary greatly in design. It is difficult to assess which interplay of design features is particularly advantageous for screw anchorage. This study aims to increase the understanding of the anchorage behaviour between screw and cancellous bone. Pull-out tests of six pedicle screws in two sizes each were performed on three densities of biomechanical test material. More general screw characteristics were derived from the screw design and evaluated using the test data. Selected screws were tested on body donor material. Some screw characteristics, such as compacting, are well suited to compare the different thread designs of screws with tapered core. The combination of two characteristics, one representing bone compacting and one representing thread flank area, appears to be particularly advantageous for assessing anchorage behaviour. With an equation derived from these characteristics, the pull-out strength could be calculated very accurately (mean deviation 1%). Furthermore, findings are corroborated by tests on donor material. For screws with tapered core, the design demands for good anchorage against pull-out from cancellous bone change with material density. With sufficient bone quality, screws with a high compacting effect are advantageous, while with low bone density a high thread flank area also appears necessary for better screw anchorage.

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“…Artificial bones (Sawbones, Vashon Islands, WA) employed in biomechanical studies , were used to observe the effect of the shape memory implant on cortical and trabecular bones. A model with a density of 15 pcf (Cellular Foam, Block, #1522-1300) was used as the trabecular bone, and a model produced from short fiber-reinforced epoxy (Solid, Fourth Generation, #3403-11) was used for the cortical bone.…”

Section: Methodsmentioning

confidence: 99%

Determination of the Effect of TiN Coating on Self-Fitting Properties of Dental Implants Made of NiTi Alloy

Korkmaz

Sağlam

2022

ACS Biomater. Sci. Eng.

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Design and material research continues to increase dental implants’ success rates, which is a widely applied treatment type. The size and morphology of the implant–bone interface are essential for implant stability. Our study produced a dental implant with two artificial tooth roots from NiTi alloy to increase the implant–bone contact surface. The properties of NiTi alloy, such as transformation temperature and composition, were determined by material characterization tests. Using NiTi alloy’s shape memory effect, these artificial roots at body temperature were programmed with appropriate heat treatments for the self-fitting feature. Dental-implant-like models are coated with TiN to prevent Ni ion release. The corrosion tests were performed in Ringer’s solution to determine the effect of TiN coating on Ni ion release. The nickel ion emission values showed that the TiN coating inhibited the release. In addition, it was determined that the TiN coating increased the shape memory transformation time of the NiTi alloy. In in vitro tests of NiTi and TiN-coated NiTi implants, it was observed that they completed self-fitting by deforming the trabecular bone, but the placement in the cortical bone was not complete. During the use of a shape memory implant, it should complete its transformation without contacting the cortical bone and should not cause a stress concentration.

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Fracture behavior of cancellous bone and cancellous bone-PMMA bone cement interface: An experimental study using an integrated methodology (wedge splitting test and Heaviside-based digital image correlation)

Cited by 8 publications

References 32 publications

A Three-Parameter Weibull Distribution Method to Determine the Fracture Property of PMMA Bone Cement

A Three-Parameter Weibull Distribution Method to Determine the Fracture Property of PMMA Bone Cement

Influence of thread design on anchorage of pedicle screws in cancellous bone: an experimental and analytical analysis

Determination of the Effect of TiN Coating on Self-Fitting Properties of Dental Implants Made of NiTi Alloy

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