Evaluation of early bone response to fluoride-modified and anodically oxidized titanium implants through continuous removal torque analysis
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Published on: February 10, 2014
Taek-Ka Kwon1, Hyo-Jung Lee, Seung-Ki Min
1Department of Dentistry, St. Catholic Hospital, Catholic University of Korea, Ji-Dong, Suwon, South Korea.
Purpose:
To compare between a bioactive and a bioinert implant with different geometries by continuous measurement of the removal torque and calculation of the angular momentum of each surfaced implant.
Materials And Methods:
Six New Zealand white rabbits were used in the study. Each rabbit received 2 implants. A bioactive fluoride-modified implant with a conical connection and microthread design was inserted into one tibia, and a bioinert anodically oxidized implant with an external connection design was inserted into the other. After 2 weeks of implant insertion, the removal torque values were continuously measured according to time. Using the time-torque curve resulting from the measurements, the maximum values were determined, and the angular momenta were calculated.
Results:
The anodically oxidized implant had significantly higher peak removal torque and angular momentum values than the fluoride-modified implant (P < 0.05).
Conclusions:
The impact of the fluoride-modified bioactive implant on early bone response remains unclear. Considering the angular momentum of dental implants may assist in the elucidation of the effect of implant geometry on bone response.
