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Related Experiment Videos

Immediate loading of titanium plasma-sprayed implants: an histologic analysis in monkeys

A Piattelli1, M Corigliano, A Scarano

  • 1Oral Medicine and Pathology, Dental School, University of Chieti, Italy. apiattelli@unich.it

Journal of Periodontology
|May 14, 1998
PubMed
Summary

Immediately loaded titanium implants showed significantly greater bone-implant contact than unloaded controls in monkey jaws. This suggests successful osseointegration without fibrous tissue, supporting immediate loading protocols for dental implants.

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Area of Science:

  • Biomaterials Science
  • Dental Implantology
  • Preclinical Research

Background:

  • Titanium plasma-sprayed (TPS) implants are widely used in dental restorations.
  • Immediate loading protocols aim to expedite functional restoration after implant placement.
  • Understanding peri-implant tissue response is crucial for long-term implant success.

Purpose of the Study:

  • To evaluate peri-implant tissue reactions to immediately loaded TPS implants in Macaca fascicularis monkeys.
  • To compare bone-implant contact (BIC) percentages between immediately loaded and unloaded implants.
  • To assess the presence of fibrous connective tissue at the implant-bone interface.

Main Methods:

  • 48 TPS implants were placed in the posterior maxilla and mandible of Macaca fascicularis monkeys.

Related Experiment Videos

  • 24 implants were immediately loaded with a superstructure; 24 served as unloaded controls.
  • Histomorphometrical analysis was performed on retrieved implants after 9 months.

    • Main Results:

    • All implants were covered by bone.
    • Immediately loaded (test) implants showed significantly higher BIC percentages (Maxilla: 67.3%, Mandible: 73.2%) compared to controls (Maxilla: 54.5%, Mandible: 55.8%) (P < 0.01).
    • Bone surrounding test implants exhibited a more compact appearance, with no fibrous connective tissue observed at the interface.

    Conclusions:

    • Immediate loading of TPS implants in monkeys resulted in significantly enhanced bone-implant contact.
    • The absence of fibrous tissue suggests successful osseointegration and favorable tissue response to immediate loading.
    • These findings support the clinical efficacy of immediate loading protocols for TPS dental implants.