Influence of the number of layers of paris bandage plasters on the mechanical properties speciments used on orthopedic splints

Vieira, Gustavo Cardoso; Barbosa, Rafael Inácio; Marcolino, Alexandre Márcio; Shimano, Antonio Carlos; Elui, Valéria Meirelles Carril; Fonseca, Marisa de Cássia Registro

doi:10.1590/s1413-35552011005000018

Cited by 8 publications

(9 citation statements)

References 18 publications

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“…For all the three sub-groups, 8 layer POP cast was heavier and thicker than 3 layer followed by 2 layer cast. An increase in weight corresponding with a number of layers is also reported in an earlier study [12].…”

Section: Discussionsupporting

confidence: 83%

“…In the present study, we prepared 2, 3 and 8 layer sample casts of POP bandages. In order to minimize the variation, the length of all sample cast was kept 10 cm, and an inner diameter was kept constant as 25 mm, similar to the earlier studies [11][12][13]. 8 layer sample casts were prepared for standardization of procedure for both sampling and biomechanical study as described in an earlier study [11].…”

Section: Discussionmentioning

confidence: 99%

“…In an earlier study, POP bandage was tested for its mechanical properties by making cast samples of 3, 6, 8, 10, 12 and 14 layer of POP bandage. They suggested that the use of 10 layers of POP yields a better relationship between material's weight and final strength [12].…”

Section: Discussionmentioning

confidence: 99%

“…Compression testing was done on POP casts after mounting them on UTM, and an axial load was applied @ 10 mm/min until failure [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

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Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials

Parmar¹,

Tyagi²,

Dabas³

et al. 2014

Vet World

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Aim: To assess the physical and mechanical properties of plaster of Paris (POP) bandage cast used as a splinting and casting materials.Materials and Methods: POP casts were divided into three Groups A, B and C with 2, 3 and 8 layer for POP bandage, respectively (n=6 in each group). Handling characters, technical easiness or difficulties, setting time, weight, diameter and thickness of the casts were recorded for different groups. The casts were mounted on universal testing machine and axial load was applied @ 10 mm/min until failure. The load deflection graphs were plotted. The maximum force at which failure of the casts occurred was recorded. Stress, strain, modulus of elasticity (MOE) and stiffness of casts were calculated.Result: Construction of POP bandage cast was messy and required 45-60 min for hardening. 8 layer POP cast was comparatively heavier in weight and thicker in cross section than 3 layer cast followed by 2 layer cast. Under axial compression, the load bearing capacity of 8 layer POP casts was more than 2 and 3 layer cast. Conclusion:The values of load bearing capacity, stress, stiffness and MOE of cast were the highest for 8 layer POP cast followed by 2 and 3 layer cast. Use if splints with POP cast is recommended due to its poor mechanical properties.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Compression testing was done on POP casts after mounting them on UTM, and an axial load was applied @ 10 mm/min until failure [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials

Parmar¹,

Tyagi²,

Dabas³

et al. 2014

Vet World

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“…With tape casting materials, namely Scotchcast™, Soft Cast, Cellona ® and WOODCAST Ribbon, the number of layers sampled was varied according to the instructions from the manufacturer and common practices in cilinics. 5,6 With the WOODCAST Splint and WOODCAST 2 mm products, only one layer of material was used.…”

Section: Techniquementioning

confidence: 99%

Comparative study on stiffness properties of WOODCAST and conventional casting materials

Pirhonen¹,

Pärssinen²,

Pelto

2013

Prosthetics &Amp; Orthotics International

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Physico-mechanical assessment of plaster of Paris bandage produced from locally sourced materials

et al. 2019

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Despite the abundance of gypsum and other materials needed for the production of plaster of Paris (POP) in the country, Nigeria relies heavily on the importation of orthopaedic POP bandage. Therefore, the present study aimed at producing POP bandage (LPOP) from locally sourced pure gypsum and cassava starch. Physico-chemical parameters, such as amylose content, amylopectin content, water absorption capacity (WAC), swelling capacity (SC) and browning-charring temperature (BCT) were obtained for the starch binder. A slurry of pure gypsum powder and 2% gelatinized starch binder was impregnated on cotton gauze and cured in an oven at 180 • C for an hour to produce the LPOP. A comparative mechanical test was carried out on the LPOP and a POP bandage (CPOP) acquired from the market using a universal testing machine. The results showed that starch contains 9.06 mg per 100 g amylose and 24.1 mg per 100 g amylopectin which implied that it has a good binding property. The SC, WAC and BCT were evaluated to be 69.79, 81.94 and 190 • C, respectively. The yielding tensile force for LPOP and CPOP are 148 and 460 N, respectively. The horizontal compressive strength of the LPOP and CPOP are 1712 and 1595 N while the vertical compressive strengths are 1070 and 623 N, respectively. These results show that the LPOP produced from locally sourced materials compete favourably in terms of mechanical properties with POP bandage in the market. Thus, based on its strength, it is recommended for orthopaedic casting.

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Influence of the number of layers of paris bandage plasters on the mechanical properties speciments used on orthopedic splints

Cited by 8 publications

References 18 publications

Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials

Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials

Comparative study on stiffness properties of WOODCAST and conventional casting materials

Physico-mechanical assessment of plaster of Paris bandage produced from locally sourced materials

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