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Related Experiment Videos

Alveolar ridge maintenance with solid nonporous hydroxylapatite root implants.

J H Quinn, J N Kent

    Oral Surgery, Oral Medicine, and Oral Pathology
    |November 1, 1984
    PubMed
    Summary

    This study shows that hydroxylapatite (HA) root implants can preserve alveolar bone. These biocompatible implants promote bone and soft tissue migration, suggesting suitability for human clinical trials.

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    Area of Science:

    • Biomaterials Science
    • Dental Implantology
    • Oral Surgery

    Background:

    • Nonresorbable polycrystalline hydroxylapatite (HA) solid root forms are used in dental applications.
    • Evaluating simple implantation techniques and material biocompatibility in fresh extraction sockets is crucial for alveolar bone preservation.

    Purpose of the Study:

    • To determine a simple implantation technique for HA root forms.
    • To assess the biocompatibility of HA implants in fresh extraction sockets.
    • To investigate alveolar bone preservation using HA root implants in animal models.

    Main Methods:

    • Animal studies were conducted on dogs and primates.
    • HA root forms were implanted in fresh extraction sockets, placed 2 to 3 mm below the alveolar bone crest.

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  • Alveolar bone preservation was compared between implant sites and control sites.

    • Main Results:

    • Bone and soft tissue migrated across HA root implants without the need for soft-tissue closure.
    • A precise fit of the implant to the socket was not necessary.
    • An average of 2 mm more alveolar bone was preserved at implant sites compared to control sites.

    Conclusions:

    • The implantation technique is simple and effective for alveolar bone preservation.
    • Hydroxylapatite root implants demonstrate good biocompatibility.
    • The positive results in animal studies support the initiation of clinical trials in humans.