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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Using an instrumented hammer during Summers osteotomy: an animal model.

Yasuhiro Homma1, Manon Bas Dit Nugues2, Arnaud Dubory3

  • 1CNRS, Laboratoire Modelisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 61 Avenue du General de Gaulle, 94010 Creteil, France; Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Orthopaedics, Faculty of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

Medical Engineering & Physics
|December 6, 2025
PubMed
Summary

This study introduces an instrumented hammer to predict bone damage during Summers osteotomy, a dental implant procedure. The new method enhances surgical safety by detecting damage before it occurs, reducing risks like sinus membrane perforation.

Keywords:
Dental implantImplantInstrumented hammerOsteotomySummers osteotomy

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Area of Science:

  • Oral Surgery
  • Biomedical Engineering
  • Dental Implantology

Background:

  • Summers osteotomy is crucial for dental implants, aiming to increase bone height and density.
  • Excessive impacts during osteotomy pose risks, including sinus membrane perforation and benign paroxysmal vertigo.
  • Careful modulation of impacts is essential for safe Summers osteotomy.

Purpose of the Study:

  • To evaluate an instrumented hammer's ability to predict bone damage during Summers osteotomy before complete osteotome protrusion.
  • To develop and validate an algorithm for early detection of bone damage.

Main Methods:

  • 35 lamb palate osteotomies were performed using a force-sensor-equipped hammer.
  • Signal processing identified a parameter (τ) related to impact force variations.
  • A damage detection algorithm was developed based on τ changes over impact number.

Main Results:

  • The algorithm consistently detected bone damage before total osteotome protrusion.
  • Damage was detected with high accuracy, with NVideo - NCrit > -2 in 97% of cases and NSurg - NCrit > -2 in 94% of cases.
  • The system predicted damage almost one impact prior to visual or surgeon identification.

Conclusions:

  • An instrumented hammer and developed algorithm can reliably predict bone damage during Summers osteotomy.
  • This technology offers a promising approach to enhance the safety of dental implant procedures.
  • Early damage detection minimizes surgical risks, paving the way for safer osteotomy techniques.