| Abstract | The purpose of this study was to compare the retentive strength of zinc-phosphate cement, glass-ionomer cement, and mineral trioxide aggregate (MTA) cement in the retention of prefabricated posts. The root canals of 60 bovine incisors were prepared and obturated with warm gutta-percha. Post space was prepared, the smear layer removed, and posts were luted with zinc-phosphate cement, glass-ionomer cement, or MTA. The specimens were stored at 37 degrees C and 100% humidity for 2 weeks, and then subjected to increasing axial tensile forces by an Instron machine until bond failure occurred. Data were analyzed by a one-way ANOVA and a Tukey-Kramer multiple comparison test. The retentive strengths of zinc phosphate and glass-ionomer cements were statistically equivalent, and significantly greater than MTA (p < 0.001), which suggests that zinc phosphate or glass-ionomer cement may be superior to MTA when used as luting agents for posts in endodontically treated teeth. |
| Authors | Joseph W Vargas, Frederick R Liewehr, Anthony P Joyce, Royce R Runner
(Affiliation: U.S. Army Endodontic Residency Program, Fort Gordon, GA, USA.)
|
| Journal | Journal of endodontics
(J Endod)
Vol. 30
Issue 11
Pg. 775-7
(Nov 2004)
ISSN: 0099-2399 United States |
| PMID | 15505508
(Publication Type: Comparative Study, Journal Article)
|
| Chemical References |
- Aluminum Compounds
- Calcium Compounds
- Dentin-Bonding Agents
- Drug Combinations
- Glass Ionomer Cements
- Oxides
- Root Canal Filling Materials
- Silicates
- mineral trioxide aggregate
- Zinc Phosphate Cement
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| Topics |
- Aluminum Compounds
- Analysis of Variance
- Animals
- Calcium Compounds
- Cattle
- Dental Bonding
- Dental Prosthesis Retention
- Dental Stress Analysis
- Dentin-Bonding Agents
- Drug Combinations
- Glass Ionomer Cements
- Materials Testing
- Oxides
- Post and Core Technique
- Root Canal Filling Materials
- Silicates
- Statistics, Nonparametric
- Tensile Strength
- Zinc Phosphate Cement
|
