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Bond strength between root dentin and three glass-fiber post systems.
Mustafa Kalkan1, Aslihan Usumez, A Nilgun Ozturk
1Department of Prosthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey.
The Journal of Prosthetic Dentistry
|July 29, 2006
Summary
Opaque and electrical glass-fiber posts show superior bond strength compared to translucent types after endodontic therapy. Bond strength is highest in the cervical portion of the root for all tested glass-fiber post systems.
Area of Science:
- Dental Materials Science
- Endodontics
- Biomaterials Engineering
Background:
- Glass-fiber posts are alternatives to metal and ceramic posts in endodontic restorations.
- Limited data exists on the bonding efficacy of newer glass-fiber post systems to root dentin.
Purpose of the Study:
- To compare the bond strengths of opaque, translucent, and electrical glass-fiber post systems.
- To evaluate bond strength in cervical, middle, and apical regions of the root canal.
Main Methods:
- In vitro push-out bond strength testing of 60 human teeth restored with three glass-fiber post systems.
- Application of self-etching primer and dual-cure resin luting agent.
- Testing at 24 hours and 1 week, with SEM analysis of cervical segments.
Main Results:
- Post system significantly impacted bond strength (P<.01), with opaque and electrical posts outperforming translucent ones.
- Root location affected bond strength, with cervical segments showing higher values for translucent and electrical posts.
- No significant difference in bond strength between 24 hours and 1 week testing intervals.
Conclusions:
- Opaque and electrical glass-fiber posts demonstrate comparable and superior bond strength to translucent posts.
- The cervical third of the root space provides the optimal location for bond strength with translucent and electrical posts.