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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
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Comparative evaluation of implant stability using bone expanders and conventional osteotomy.

Geo Pius1, S K Saranya1, Aswini Kumar1

  • 1Amrita School of Dentistry, Amrita Vishwa Vidyapeetham, Kochi, 682041, India.

Journal of Oral Biology and Craniofacial Research
|October 17, 2022
PubMed
Summary

Bone expanders significantly improve dental implant stability and bone-to-implant contact compared to conventional osteotomy. This method is promising, especially for compromised bone quality, enhancing osseointegration outcomes.

Keywords:
Bone expandersScrew spreadersosseodensification, resonance frequency analysis

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Area of Science:

  • Dental Implantology
  • Biomaterials Science
  • Surgical Techniques

Background:

  • Achieving optimal implant stability and bone-to-implant contact is crucial for successful osseointegration.
  • Conventional osteotomy techniques may present limitations, particularly in compromised bone conditions.

Purpose of the Study:

  • To compare implant stability and bone-to-implant contact using bone expanders versus conventional osteotomy.
  • To evaluate the efficacy of bone expanders in enhancing primary implant stability and osseointegration.

Main Methods:

  • A multiphasic study involving ex vivo porcine models and a human clinical trial.
  • Implant stability assessed using resonance frequency analysis (RFA).
  • Bone-to-implant contact evaluated through micro-computed tomography (micro-CT) and radiological analysis.

Main Results:

  • Bone expanders demonstrated higher implant stability (71.2% vs. 66.4% in Phase I; 71.4% vs. 65.6% initially in Phase II) and bone-to-implant contact (84.7% vs. 66.3%).
  • Phase II showed sustained stability with bone expanders (74.8% at 3 months) compared to conventional osteotomy (71.8% at 3 months).

Conclusions:

  • Bone expanders can significantly enhance implant stability and bone-to-implant contact.
  • Osteotomy using bone expanders is a promising technique, particularly for patients with compromised bone, potentially improving long-term implant success.