Mechanical Assessment of Oseointegration of Implant Coating with Mixture of Strontium Chloride and Hydroxyapatite at Different Concentration

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Author(s) Ghasak H. Jani | Shatha S. Al- Ameer
Pages 71-76
Volume 5
Issue 2
Date February, 2016
Keywords Torque Removal Test, Coating, RXD, Strontium
Abstract

Implant is the future restoration the lost teeth missing and tissues that depend on the stability of the implant in the bone is important to shorten patient wait troublesome period and accelerate the restoration of function and aesthetics.The aim of the study was to evaluate the bond strength between the bone and Ti implant coated with mixture of Srcl2 and hydroxyapatite after different periods of implantation (2, 6) weeks in rabbit tibia by torque removal test.36 screw shaped commerically pure titanium implants, 3.0 mm in diameter and 8mm in length coating with mixture of strontium chloride and hydroxyapatite at different concentration by electrophortic deposition , 18 screws were coated with mix 1 (75%Sr-25%HA) and other 18 were coated by mix 2 (25%Sr-75%HA) . The assess surface topography was done by using optical microscope and phase analysis by X-ray Diffractometer . The screws were implanted in nine healthy adult new zeeland rabbits each tibia received two screws one coated with mix 1 and other coated by mix 2. Torque removal test was done by torque-meter to determine the peak torque necessary to remove the implant from tibia bone after different periods (2 and 6 weeks) of implantation .Torque removal value for mix 2 (25%Sr-75%HA) was statistically significantly higher than mix 1(75% Sr- 25% HA) after 2weeks and non-significant difference after 6 weeks. There was significant increase in torque removal value with time.High torque removal value was obtained by coating titanium screw with mixture 2 (25%Sr-75%HA) than mixture 1 (75% Sr- 25% HA).

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