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A new method to quantify wear using implant supported restorations.

H W Wiskott1, J Perriard, S S Scherrer

  • 1Department of Prosthodontics, School of Dentistry, University of Geneva, 19, rue Barthélemy-Menn, 1205 Geneva, Switzerland. anselm@wiskott.com

Dental Materials : Official Publication of the Academy of Dental Materials
|April 14, 2000
PubMed
Summary

This study introduces a new method for measuring wear in dental restorations. The technique achieves high accuracy, with a measurement error of approximately 5 microns, ensuring reliable wear assessment.

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Prosthodontics

Background:

  • Assessing wear in prosthodontic veneering materials is crucial for long-term restoration success.
  • Existing methods may lack the precision required for accurate wear quantification.

Purpose of the Study:

  • To develop and validate a novel technique for measuring the wear of prosthodontic veneering materials.
  • To evaluate the accuracy and reproducibility of the measurement system, including intraoral transfer.

Main Methods:

  • A novel system utilizing an octagonal connector (ITI implant system) for precise repositioning.
  • Integration of an x-y table and a z-axis LVDT displacement gauge for surface profiling.
  • Custom PC-based software controlled the measurement process, with data analyzed using commercial software.

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Main Results:

  • Repeated profile tracings demonstrated a measurement error of less than 2 microns.
  • When the calibration surface was removed between measurements, simulating clinical trials, the error increased to approximately 5 microns.

Conclusions:

  • The developed measurement technique, including transfer to and from the oral cavity, exhibits a measurement error of +/- 5 microns.
  • This novel method offers a reliable approach for assessing wear in prosthodontic restorations.