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Updated: Jul 17, 2026
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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Using implant connectors to support clinical abrasion probes: a methodological study
H W Anselm Wiskott1, Jean Perriard, Susanne S Scherrer
1Department of Prosthodontics-Biomaterials, University of Geneva, School of Dental Medicine, 19 rue Barthélemy-Menn, 1205 Geneva, Switzerland. Anselm@Wiskott.com
Summary
This study validated a clinical wear assessment technique for dental crowns. The veneering composite showed a higher wear rate than ceramic and unfilled resin, exceeding ADA guidelines.
Area of Science:
- Dental Materials Science
- Biomaterials Wear Analysis
- Prosthodontics
Background:
- Assessing the clinical wear of full crown veneering materials is crucial for long-term restoration success.
- Existing methods may lack precision or clinical applicability.
- A validated procedure is needed to accurately quantify wear rates.
Purpose of the Study:
- To validate a novel procedure for assessing the clinical wear rate of full crown veneering materials.
- To confirm the clinical applicability and alignment capacity of the ancillary profiling apparatus.
- To quantify and compare the wear rates of a composite, ceramic, and unfilled resin veneering material.
Main Methods:
- Utilized implant-supported crowns (n=14) with different veneering materials (composite, ceramic, unfilled resin).
- Employed an ancillary profiling apparatus with ITI-Straumann Octa connectors for precise contour measurements over 24 months.
- Calculated material loss by comparing initial and subsequent digitalized contour profiles.
Main Results:
- The total method error was estimated at +/-10 micrometers.
- Annual wear rates: composite (75 microm/year), ceramic (6 microm/year), unfilled resin (160 microm/year).
- Wear was predominantly observed in occlusal contact areas.
Conclusions:
- The developed technique using ITI-Straumann octagonal implant connectors is suitable for clinical wear assessment.
- The tested veneering composite exhibits a wear rate exceeding ADA guidelines for direct filling composites.
- This highlights potential longevity concerns for this specific composite material in full crown applications.
