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Updated: Jul 5, 2025
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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
15.5K
Functionality testing of an innovative biomechanically optimized and surface-modified orthodontic mini-screw-a
Kathrin Duske1, Billan Turan2, Cornelia Prinz3
1Department of Orthodontics, University Dental School, Rostock University Medical Center, Strempelstr. 13, 18057, Rostock, Germany. kathrin.duske@med.uni-rostock.de.
Summary
Newly designed orthodontic mini-screws with surface coatings demonstrated high success rates in beagle dogs. These stable implants show promise for improving orthodontic treatment outcomes.
Area of Science:
- Orthodontic research
- Biomaterials science
- Veterinary dentistry
Background:
- Orthodontic mini-screw failure is linked to primary stability and insertion torque.
- Surface modification of mini-screws may reduce failure rates.
Purpose of the Study:
- To evaluate the stability of a novel surface-modified orthodontic mini-screw in vivo.
- To compare the performance of DOTIZE® and DOTIZE®-copper coatings.
Main Methods:
- Newly designed mini-screws with DOTIZE® or DOTIZE®-copper coatings were implanted in beagle dog mandibles for 8 months.
- Insertion and removal torques were measured and compared to artificial bone.
- Bone-to-implant contact and bone-between-threads were examined.
Main Results:
- High success rates: 95.3% for DOTIZE® and 90.5% for DOTIZE®-copper.
- No significant difference in insertion/removal torque between coatings.
- Torque limitation of 20 Ncm was required during insertion; bending occurred in the thread-free portion without limitation.
Conclusions:
- Surface coatings show potential to enhance orthodontic mini-screw performance.
- The study confirmed high success rates and stability of the tested mini-screws.
- Further research is warranted to fully elucidate the benefits of these surface modifications.
