Previous studies on phosphide and oxide films formed by heat treatment of HA dip coated-Ti showed various properties with regard to both composition and morphology in the interfaces according to heating temperature. HA dip coated Ti screws were heated for 1 hour in a graphite furnace with protective argon atmosphere at 800(TiP1), 850(TiP2) and 900^oC(TiP3) after producing a vacuum (10² Torr). The adhered HA coating layers on the metal surfaces were removed with strong jet spray of distilled water and subsequently sterilized according to standard procedures for metallic implant devices. Nine adult New Zealand white rabbits, aged 9 to 10 months, were used in the experiments. The three screw-shape specimens including non-treated Ti (c.pTi) screw were implanted in each animal, two in each medial proximal tibia according to the surgical protocol of the Branemark implant system. After 4 weeks, the rabbits were sacrificed with a lethal dose of pentobarbital injection and then the osseointegration was determined by an immediate measurement of the removal torque of the specimens. The result obtained demonstrated that the phosphide and rough Ti surface layers yielded higher the removal torque values than non-treated Ti surface. The mean values(standard deviation in parentheses) were 15.3(9.0), 33.8(17.9), 27.7(11.5) and 37.5(23.7) N-cm for c.pTi, TiP1, TipP2 and TiP3, respectively. Oxide thickness and mean pore size of the heated Ti surfaces increased relative to elevated heating temperature, the maximum phosphorus concentration(about 7 at.%.) diffused from the HA layer was obtained via heating at 800^oC. From results of this experiment, a conclusion can be reached that the chemical composition of Ti phosphide layer with the surface morphology of Ti materials play an important role in bone bonding process on Ti implants.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/857 must be provided.

1. CPC Precipitation Behavior of Titanium Phosphide Surfaces Obtained from Heat Treated Ti6Al4V buried in Hydroxyapatite Paste
2. Effects of Chemical Composition of Titanium Material Surface on SAMs Formation by Functional Groups of Alkanethiol and Alkanesilanes