The relation between surface roughness and interfacial shear strength for bone-anchored implants. A mathematical model

被引:154
作者
Hansson, S [1 ]
Norton, M
机构
[1] Chalmers Univ Technol, Dept Pol Mat, S-41296 Gothenburg, Sweden
[2] Astra Tech AB, Dept Res & Dev, S-43121 Molndal, Sweden
[3] Charing Cross Hosp, Dept Oral & Maxillofacial Surg, London W6 8RF, England
关键词
interfacial shear strength; osseointegration; rough surface;
D O I
10.1016/S0021-9290(99)00058-5
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
A rough bone implant surface was conceptualized as being built up of pits of different sizes and of different shapes. Hypotheses were formulated regarding the mechanical strength of the interfacial bone based upon the present knowledge of the character of the tissues adjacent to endosseous implants and the mechanical characteristics of different bone constituents. A surface roughness parameter was derived, the pit effectivity factor (f(pe)), which describes how effective the individual pits of the rough surface are as retention elements with regard to shear. Another surface roughness parameter was defined, the pit density factor (f(pd)), the value of which depends upon how densely packed the pits are. The interfacial shear strength of a rough implant surface with known microgeometry can be estimated by means of these two surface roughness parameters. The effectiveness of pits of different sizes and of different shapes was investigated using this model. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:829 / 836
页数:8
相关论文
共 32 条
[1]  
AKIBA M, 1990, J OKAYAMA DENT SOC, V9, P3
[2]   INTERFACE ANALYSIS OF TITANIUM AND ZIRCONIUM BONE IMPLANTS [J].
ALBREKTSSON, T ;
HANSSON, HA ;
IVARSSON, B .
BIOMATERIALS, 1985, 6 (02) :97-101
[3]   AN ULTRASTRUCTURAL CHARACTERIZATION OF THE INTERFACE BETWEEN BONE AND SPUTTERED TITANIUM OR STAINLESS-STEEL SURFACES [J].
ALBREKTSSON, T ;
HANSSON, HA .
BIOMATERIALS, 1986, 7 (03) :201-205
[4]  
ALBREKTSSON T, 1982, CLIN APPLICATIONS BI, P167
[5]  
[Anonymous], 1970, STRENGTH BIOL MAT
[6]  
BOBYN JD, 1980, CLIN ORTHOP RELAT R, P263
[7]  
Branemark P I, 1977, Scand J Plast Reconstr Surg Suppl, V16, P1
[8]   INFLUENCE OF SURFACE CHARACTERISTICS ON BONE INTEGRATION OF TITANIUM IMPLANTS - A HISTOMORPHOMETRIC STUDY IN MINIATURE PIGS [J].
BUSER, D ;
SCHENK, RK ;
STEINEMANN, S ;
FIORELLINI, JP ;
FOX, CH ;
STICH, H .
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 1991, 25 (07) :889-902
[9]   RESPONSE OF COMPACT BONE IN TENSION AT VARIOUS STRAIN RATES [J].
CROWNINSHIELD, RD ;
POPE, MH .
ANNALS OF BIOMEDICAL ENGINEERING, 1974, 2 (02) :217-225
[10]   MECHANICAL CONSEQUENCES OF VARIATION IN MINERAL CONTENT OF BONE [J].
CURREY, JD .
JOURNAL OF BIOMECHANICS, 1969, 2 (01) :1-+