AI Article Synopsis
- The study aimed to compare the bone-implant contact percentages of immediate-loaded implants versus nonloaded (control) implants in nonhuman primates.
- Ninety days post-surgery, results showed that immediate-loaded implants had a higher average contact percentage (62.4%) compared to control implants (56.3%), though one immediate-loaded implant failed and two had lower contact percentages.
- The findings suggest that while immediate loading of implants can enhance bone integration, there are risks involved, highlighting a need for careful consideration in clinical applications.
Article Abstract
Purpose: To evaluate a square-thread design implant and compare the bone-implant contact percentage between immediate-loaded and nonloaded implants (controls) in nonhuman primates.
Materials: Five nonhuman primates each received 3 implants, with a total of 5 control implants and 10 immediate-loaded implants in posterior regions of the mouth. Ninety days after surgery (and function was appropriate), block sections of the implants were removed and sectioned in 200-mum thick pieces. The block sections were stained with modified Masson for evaluation of the bone-implant contact percentage.
Results: One of the immediate-loaded implants failed. The bone-implant contact percentage of control implants ranged from 50.34% to 64.13% and averaged 56.3%. The bone-implant contact percentage of immediate-loaded implants ranged from 43.23% to 75.72%, with an average of 62.4%. Two implants had lower bone-implant contact percentage than the others, and when these are not included in the evaluation, the bone-implant contact percentage average increased to 67.6%.
Conclusions: Immediate-loaded implants in the nonhuman primates often have a higher bone-implant contact percentage at 90 days than unloaded implants. The bone remodeling is different for loaded implant-bone interfaces than for unloaded conditions. However, 1 immediate-loaded implant failed, and 2 implants had lower bone-implant contact percentage than controls. Therefore, although there are benefits of immediate loading, there appear to also be some risks.
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| http://dx.doi.org/10.1097/ID.0b013e3180500a84 | DOI Listing |
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