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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.
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.
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.
