Analysing the optimal value for titanium implant roughness in bone attachment using a tensile test

• Published in: Biomaterials 2003-11, Vol.24 (25), p.4559-4564
• Main Authors: Rønold, H.J., Lyngstadaas, S.P., Ellingsen, J.E.
• Format: Article
• Language: English
• Subjects: Acid etching; Animals; Biocompatible Materials - chemistry; Bone attachment; Coin shaped titanium implants; Female; Hydrochloric Acid - chemistry; Implants, Experimental; Materials Testing; Microscopy, Electron, Scanning; Osseointegration; Rabbits; Random Allocation; Surface Properties; Surface roughness; Tensile Strength; Tensile testing; Tibia; titanium; Titanium - chemistry
• ISSN: 0142-9612; 1878-5905
• DOI: 10.1016/S0142-9612(03)00256-4

This study aims at studying the effect of surface roughness on bone attachment of coin-shaped titanium implants. All implants in this study were blasted with TiO 2 particles of 180–220 μm, and then divided into three groups. One group had no further surface treatment whereas the other two groups were subsequently etched with hot hydrochloric acid (0.01 m or 1 m). The surface topography of the implant specimens was examined by SEM and by a confocal laser scanner for a numeric evaluation of S a, S t and S dr. The ranging implants in the three groups differed significantly in surface structure. The implants with modified surfaces were then placed into the tibias of 12 rabbits ( n=16). After 8 weeks healing, the attachment of bone to implants were examined using a standardised tensile test analysis. The implants that were only blasted (positive control) showed significantly better functional attachment ( p