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Comparison of titanium dowel retention using four different luting agents
Ali Balbosh1, Klaus Ludwig, Matthias Kern
1School of Dentistry, Department of Prosthodontics, Propaedeutics, and Dental Materials, Christian-Albrechts University at Kiel, Arnold-Heller Strasse 16, 24105 Kiel, Germany.
The Journal of Prosthetic Dentistry
|August 30, 2005
Summary
Roughening dentinal walls significantly increases prefabricated dowel retention, especially with resin cements. Artificial aging, however, decreases retention over time, impacting the long-term stability of dental restorations.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Biomaterials Engineering
Background:
- Prefabricated dowel retention is influenced by luting material, surface characteristics, and mechanical loading.
- Understanding these factors is crucial for predictable long-term success in endodontically treated teeth.
Purpose of the Study:
- To investigate the impact of dentinal wall roughening and artificial aging on the retention of prefabricated tapered titanium dowels.
- To compare the efficacy of four different luting materials under these conditions.
Main Methods:
- 128 endodontically treated teeth were used, with dowel spaces prepared in the root canals.
- Four luting agents (zinc-phosphate, glass-ionomer, resin composite, self-adhesive resin composite) were tested.
- Specimens underwent simulated aging (thermal cycling and mechanical loading) or were tested after 3 days.
Main Results:
- Roughening dentinal walls significantly enhanced dowel retention across all luting material groups.
- Resin composite luting agents demonstrated a significantly greater increase in retention when dentinal walls were roughened.
- Extended storage with simulated aging led to a significant reduction in dowel retention.
Conclusions:
- Roughening canal dentin and utilizing resin-based luting cements are effective strategies to improve prefabricated dowel retention.
- These methods offer statistically significant improvements in retention values, contributing to more durable restorations.