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A descriptive study on retrieved non-threaded and threaded implant designs.

Pia K Bolind1, Carina B Johansson, William Becker

  • 1Department of Biomaterials/Handicap Research, Institute for Surgical Sciences, Gothenburg University, Gothenburg, Sweden. pia.bolind@nobelbiocare.com

Clinical Oral Implants Research
|August 25, 2005
PubMed
Summary

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Non-threaded cylindrical implants showed greater bone saucerization compared to threaded Brånemark implants in retrieved oral samples. This finding suggests potential advantages for non-threaded designs in bone integration.

Area of Science:

  • Oral Implantology
  • Biomaterials Science
  • Dental Research

Background:

  • Bone saucerization, the adaptation of bone around an implant, is crucial for long-term implant success.
  • Understanding the influence of implant design on bone response is vital for improving clinical outcomes.

Purpose of the Study:

  • To compare bone saucerization between non-threaded cylindrical and threaded (Brånemark) implant designs.
  • To evaluate bone-to-implant contact and coronal bone levels in retrieved oral implants.

Main Methods:

  • Analysis of 117 retrieved oral implants (85 non-threaded cylindrical, 85 Brånemark).
  • Investigation of undecalcified ground sections using light microscopy.
  • Calculation of percentage of implant length coronal to first bone-implant contact and bone-to-implant contact.

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Main Results:

  • Non-threaded cylindrical implants had a higher mean percentage of implant length coronal to the first bone-implant contact (65%) compared to Brånemark implants (43%).
  • Mean bone-to-implant contact was 23% for non-threaded cylindrical implants and 33% for Brånemark implants along the entire implant length.

Conclusions:

  • Non-threaded cylindrical implants exhibited greater bone saucerization in retrieved oral samples.
  • The findings suggest non-threaded designs may promote more favorable bone adaptation around the implant.