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Peri-implant bone reactions to immediately loaded implants. An experimental study in monkeys
1Johann Wolfgang University, Dental School, Department of Oral Surgery, Frankfurt, Germany. Dr.G.E.Romanos@t-online.de
Journal of Periodontology
|May 8, 2001
Summary
Immediate loading of splinted implants in the posterior mandible shows successful osseointegration. This dental implant technique demonstrates comparable bone and tissue response to delayed loading in monkeys.
Area of Science:
- Dental Implantology
- Oral Surgery
- Biomaterials Science
Background:
- Immediate loading of splinted implants is established in the anterior jaw.
- Limited research exists on immediate implant loading in the posterior mandible.
- This study investigates bone response to immediate loading in the posterior mandible.
Purpose of the Study:
- To evaluate bone reactions around immediately loaded implants in the posterior mandible.
- To compare osseointegration of immediately loaded implants versus delayed loaded implants.
- To assess peri-implant tissue response in the posterior mandibular region.
Main Methods:
- 36 implants placed in Macaca fascicularis monkeys after tooth extraction and socket healing.
- Control group: delayed loading after 3 months osseointegration.
- Test group: immediate loading with splinted bridges/crowns.
- Histological evaluation of bone-implant contact and tissue response.
Main Results:
- All implants achieved osseointegration.
- Observed compact cortical bone directly contacting implant surfaces.
- No gaps or connective tissue formation were detected between implant and bone.
Conclusions:
- Immediately loaded, splinted implants achieve osseointegration in the posterior mandible.
- Peri-implant hard and soft tissue responses are similar to delayed-loaded implants.
- Immediate loading is a viable option for dental implants in the posterior mandible.