The compressive modulus and strength of saturated calcium sulphate dihydrate cements: Implications for testing standards

Koh, Ilsoo; López, Alejandro; Helgason, Benedikt; Ferguson, Stephen J.

doi:10.1016/j.jmbbm.2014.01.018

Cited by 22 publications

(18 citation statements)

References 30 publications

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“…The friction force can be translated into strength of the ceramic cement (Andrews, 1946;Barinov and Komlev, 2011). The relationship between the mechanical properties and physical structure of ceramic cement explains the reduction in the mechanical properties of soluble ceramic cements upon saturation (Andrews 1946;Christoffersen and Christoffersen, 1976;Reynaud et al, 2006;Koh et al, 2014). The crystals of soluble ceramic cement dissolve upon saturation.…”

Section: Discussionmentioning

confidence: 99%

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The effect of water on the mechanical properties of soluble and insoluble ceramic cements

Koh

López

Pinar

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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Section: Discussionmentioning

confidence: 99%

“…Our previous investigation has reported the significant differences in the strength and apparent modulus of CSD upon water-saturation (Koh et al, 2014). It was suggested that these changes may be due to: 1) dissolution of CSD crystals, and/or 2) inter-crystal water lubrication, however the exact mechanism remain unclear.…”

Section: Introductionmentioning

confidence: 99%

The effect of water on the mechanical properties of soluble and insoluble ceramic cements

Koh

López

Pinar

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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“…i) Unique biological superiority of calcium sulfate. The advantages of calcium sulfate-based cement include biodegradability, biocompatibility, osteoconductivity and non-exothermic setting reactions (14), of which total biodegradability is the most important as it provides a vital foundation for one-stage surgery. ii) Good clinical efficacy of calcium sulfate as a bone substitute.…”

Section: Calcium Sulfate Can Induce the Formation Of Membranementioning

confidence: 99%

Possibility of one-stage surgery to reconstruct bone defects using the modified Masquelet technique with degradable calcium sulfate as a cement spacer: A case report and hypothesis

Jiang

Qin

et al. 2016

Biomedical Reports

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Abstract. In addition to autologous bone graft, vascularized fibular autograft and Ilizarov bone transfer, the Masquelet technique is another effective method to reconstruct bone defects. This technique was initially proposed in 1986 and consists of two stages. At the first stage, radical debridement is required and subsequently, a polymethylmethacrylate (PMMA) cement spacer is implanted at the site of the bone defects. At the second stage, when the PMMA-induced membrane is formed 6-8 weeks later, the cement spacer is carefully removed in order to not disturb the induced membrane and the bone graft is performed to fill the bone defects. Although this technique has resulted in satisfactory outcomes in the reconstruction of bone defects, the PMMA spacer used to induce membrane is not degradable and requires surgical removal. In recent years, calcium sulfate has been used as a localized antibiotic delivery vehicle and bone substitute due to its superiorities over PMMA, particularly its completely degradable nature. The present study identified that calcium sulfate can also induce the formation of a membrane. In addition, we hypothesized that the degradability of calcium sulfate may allow one-stage reconstruction of bone defects. The current study presents a clinical case report and review of the literature. IntroductionThe aim of bone defect reconstruction is to regenerate bone loss and restore limb function (1). Several approaches can be adopted in the clinic, including autologous bone graft, vascularized fibular autograft and the Ilizarov bone transfer technique. Autologous bone graft is not recommended for reconstruction of massive bone defects due to its increased risk of resorption (2). Vascularized fibular autograft and the Ilizarov bone transfer technique are the most frequently used methods for reconstruction of extensive bone defects (3-5).The Masquelet technique is another effective way to repair extensive bone defects. This two-staged method for bone reconstruction was first described by Masquelet et al in 1986 (6). The first-stage surgery includes radical debridement of bone and soft tissues, followed by implantation of a polymethylmethacrylate (PMMA) cement spacer at the site of the bone defects. The cement spacer is expected to obviate invasion of fibrous tissue at the recipient site (mechanical role) and induce the surrounding membrane (biological role) (7). After a duration of 6 to 8 weeks, a PMMA-induced pseudosynovial membrane formed. At the second-stage surgery, the cement spacer is removed carefully in order to maintain the already formed membrane and cause minimal disturbance. Following this, the defect is filled with morcellised cancellous autologous bone graft. Masquelet et al (6) reported that this method could repair a bone defect of 25 cm in length.Since the first study, the Masquelet technique has been widely used to resolve massive bone defects caused by different diseases and achieved clinical efficacy (8-12). However, efficacy in the cases managed by the Masquelet technique does not me...

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“…However, the technique is time taking and uneconomical when the number of samples are high. Indirect techniques of measuring strain, such as the use of laser and video extensometer, Digital Image Co-relation (DIC), provide quick and effective strain measurements and therefore, they are widely used in the fields of mechanical, metallurgical and civil engineering [18][19][20][21][22][23][24]. However, the study on the use of laser extensometer in understanding the geomechanical properties of rock is limited.…”

Section: Introductionmentioning

confidence: 99%

Elastic modulus of thermally treated fine grained sandstone using non-contact laser extensometer

Sirdesai¹,

Mahanta²,

Ranjith³

et al. 2016

Proceedings of the Conference on Recent Advances in Rock Engineering (RARE 2016)

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Abstract-Processes such as Underground Coal Gasification (UCG), Enhanced Oil Recovery (EOR) and underground disposal of nuclear waste involve the exposure of the surrounding rocks to extreme temperatures. At such high temperatures, the rock suffers substantial structural damage due to the anisotropy in the geotechnical properties of its constituent minerals. Due to variable thermal expansion within minerals, thermal stresses are generated in the rock microstructure which cause change in the fracture pattern. New cracks may develop and pre-existing one may migrate and widen further; thereby reducing the mechanical strength of the rock. In this study, an attempt has been made to study the elastic modulus of thermally treated fine grained sandstone from the Dholpur district of Rajasthan. The elastic modulus was measured by using a MTS LX-Laser Extensometer. The rock specimens were thermally treated at various temperatures for a fixed duration. The change in the rock microstructure was studied viewing the rock specimen under a scanning electron microscope.

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The compressive modulus and strength of saturated calcium sulphate dihydrate cements: Implications for testing standards

Cited by 22 publications

References 30 publications

The effect of water on the mechanical properties of soluble and insoluble ceramic cements

The effect of water on the mechanical properties of soluble and insoluble ceramic cements

Possibility of one-stage surgery to reconstruct bone defects using the modified Masquelet technique with degradable calcium sulfate as a cement spacer: A case report and hypothesis

Elastic modulus of thermally treated fine grained sandstone using non-contact laser extensometer

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