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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Bone response of Mg ion-implanted clinical implants with the plasma source ion implantation method
Lee-Ra Cho1, Dae-Gon Kim, Jong-Hwa Kim
1Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung-Wonju National University, Gangneung, Korea.
Objectives:
This study examined the bone response of magnesium (Mg) ion-implanted implants produced using a plasma source ion implantation method.
Materials And Methods:
The surface characteristics were evaluated by scanning electron microscopy, Auger electron spectroscopy, X-ray photoelectron spectroscopy, and Rutherford backscattering spectroscopy. The screw-type titanium implants were treated with resorbable blasting media (RBM) and divided into one control group (RBM implants) and three test groups (Mg ion-implanted implants with different retained Mg doses). Twenty-four implants from each group were placed into the tibiae of 24 New Zealand white rabbits. After allowing 6 weeks for healing, the removal torque (RTQ) was measured and the implants were subjected to histomorphometric analysis.
Results:
The surface roughness and surface morphology of the test groups were similar. The Mg ion-implanted implants with a 2.3 x 10(15) ions/cm(2) retained dose showed a significantly higher RTQ than the other implants. Histomorphometric analysis indicated that the bone contact of this group was superior to the other groups.
Conclusion:
The bone response of Mg ion-implanted implant showed results superior or similar to an RBM-treated implant. The optimal Mg ion concentration that induced the strongest osseointegration was approximately 9%.
