Investigation of properties of synthetic bone substitutes
Abstract
The article compares different materials of bone substitutes – bioceramics: hydroxyapatite (HA), tricalcium phosphate (CaP) and polymer: polylactide (PLA). In the paper determines which of the substitutes is mechanically similar to the natural bone. Universal testing machine for tensile, compression was used for research. The properties of the test substances were determined by a compression and hardness test. Comparative tests are conducted with HA, CaP, PLA which were kept for 3 weeks in physiological saline and with natural pig bone. The mechanical properties of PLA specimens produced by 3D printers have been found to be similar to natural bone. When held in saline, PLA does not change its properties and dissolves less quickly than tricalcium phosphate.
Article in Lithuanian.
Sintetinių kaulo pakaitalų savybių tyrimas
Santrauka
Straipsnyje lyginamos skirtingos kaulų pakaitalų medžiagos – biokeramika (hidroksiapatitas, HA; trikalcio fosfatas, CaP) ir polimeras (polilaktidas, PLA). Nustatoma, kuris iš pakaitalų yra mechaniškai panašus į natūralų kaulą. Tyrimams naudota universali tempimo, gniuždymo mašina „Mecmesin MultiTest 2.5-i“. Tiriamų medžiagų savybėms nustatyti atlikti gniuždymo ir kietumo bandymai. Atlikti lyginamieji bandymai su tris savaites fiziologiniame tirpale mirkytais HA, CaP, PLA bandiniais ir natūraliu kiaulės kaulu. Nustatyta, kad 3D spausdintuvu pagamintų PLA bandinių mechaninės savybės yra panašios į natūralaus kaulo. Fiziologiniame tirpale jo savybės nesikeičia ir jis tirpsta ne taip greitai, lyginant su trikalcio fosfatu.
Reikšminiai žodžiai: sintetiniai kaulo pakaitalai, polilaktidas (PLA), trikalcio fosfatas (CaP), hidroksiapatitas (HA).
Keyword : synthetic bone substitutes, polylactide (PLA), tricalcium phosphate (CaP), hydroxyapatite (HA)
This work is licensed under a Creative Commons Attribution 4.0 International License.
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