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Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties
Published on: September 1, 2018
Surface roughness analysis of fiber post conditioning processes
C Mazzitelli1, M Ferrari, M Toledano
1Department of Dental Materials and Restorative Dentistry, Policlinico Le Scotte, University of Siena, Italy.
Journal of Dental Research
|January 26, 2008
Summary
Surface treatments enhance fiber post bonding by increasing roughness. Methods like sandblasting and chemical conditioning improve adhesion by creating micro-retentive spaces on the fiber post surface.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Dental Materials
Background:
- Fiber posts are crucial in dental restorations.
- Their bonding properties are critical for long-term success.
- Surface treatment is key to improving fiber post adhesion.
Purpose of the Study:
- To investigate how chemo-mechanical surface treatments affect fiber post bonding.
- To quantify changes in surface roughness after various treatments.
- To correlate surface modifications with improved adhesion.
Main Methods:
- Quartz fiber posts were treated using chemicals (hydrofluoric acid, potassium permanganate, sodium ethoxide) and sandblasting.
- Surface roughness was analyzed using Atomic Force Microscopy (AFM) and confocal microscopy.
- Average roughness (Ra) was measured for both fibers and the resin matrix.
Main Results:
- Several treatments, including hydrofluoric acid and sandblasting, significantly increased surface roughness (Ra).
- Surface pre-treatments modified the epoxy resin matrix.
- Hydrofluoric acid specifically altered the superficial texture of quartz fibers.
Conclusions:
- Chemo-mechanical surface treatments effectively enhance fiber post roughness.
- These treatments create micro-retentive spaces, improving the surface area for adhesion.
- Selective surface conditioning improves bonding without compromising the post's internal structure.
