Impact of surface physical properties of artificial joint prosthesis materials on adhesion of Mycobacterium tuberculosis
10.7644/j.issn.1674-9960.2014.05.004
- VernacularTitle:人工关节假体材料表面物理特性对结核分枝杆菌黏附的影响研究
- Author:
Ruifei ZHANG
;
Xunwu HUANG
;
Jitong SUN
;
Hongmin LI
;
Erping BAO
;
Seng ZHU
- Publication Type:Journal Article
- Keywords:
joint tuberculosis;
artificial joint prosthesis;
bacterial adhesion;
roughness;
contact angle
- From:
Military Medical Sciences
2014;(5):337-340
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of surface physical properties of different materials for the artificial joint pros -thesis interface on Mycobacterium tuberculosis adhesion .Methods The surface polishing coating , titanium coating and hydroxyapatite coating were chosen as the experimental materials to analyze the surface topography and measure the surface roughness, contact angle and surface energy .The M.tuberculosis strains were used by in vitro cultivation method and ob-served by scanning electron microscopy (SEM) to study the morphology of M.tuberculosis and the material surface adhe-sion.The influence of surface physical properties of the interface of the artificial joint prostheses on the proliferation and ad -hesion of bacteria was evaluatd .Results The titanium coating and hydroxyapatite coating materials were hydrophobic , while the surface polishing coating was hydrophilic .The contact angle and surface energy were significantly different ( P<0.05).In the process of bacterial culture of the three types of materials , there was no significant difference (P>0.05)in the OD value of bacterial solution .The titanium coating had the largest amount of interface adhesion for M.tuberculosis, fol-lowed by the hydroxyapatite coating and the polishing coating .The difference between various materials was statistically sig-nificant (P<0.05).Conclusion The adhesion of M.tuberculosis in the surface of artificial joint prosthesis materials is closely related to the surface physical properties .A adhesiveness improves with surface roughness .
