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Updated: Jul 15, 2026
09:06
Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing
Published on: July 3, 2020
Microtensile bond strength between crown and root dentin and two adhesive systems.
Mario Fernando De Goes1, Marcelo Giannini, Richard Mark Foxton
1Department of Restorative Dentistry, Piracicaba School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil. degoes@fop.unicamp.br
The Journal of Prosthetic Dentistry
|May 15, 2007
Summary
Bonding to post space dentin significantly reduced bond strength for both tested adhesive systems. Clearfil SE Bond showed similar bond strength at the cervical finish line compared to coronal dentin.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials Engineering
Background:
- Limited data exists on the effectiveness of bonding agents on root dentin.
- Coronal substrate evaluation is insufficient for understanding root dentin bond performance.
Purpose of the Study:
- To assess and compare the bond strength of two distinct adhesive systems.
- To evaluate bond durability on coronal dentin, cervical finish line, and post space dentin.
Main Methods:
- Bovine incisor teeth were sectioned into crowns and roots.
- Post spaces and cervical finish line preparations were created in root dentin.
- Microtensile bond strength testing was performed on bonded beam specimens.
Main Results:
- Both adhesive systems exhibited reduced bond strength to post space dentin compared to coronal dentin.
- Clearfil SE Bond demonstrated comparable bond strength between coronal and cervical finish line sites.
- Single Bond showed significantly lower bond strength at the cervical finish line compared to coronal dentin.
Conclusions:
- Bonding to post space dentin compromises the integrity of the adhesive bond.
- Clearfil SE Bond offers promising bond strength at the cervical finish line, similar to coronal dentin.
- Adhesive selection is critical for achieving durable bonds in different root dentin locations.
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