Abstract |
This study evaluates in vitro the impact of increased abutment tooth mobility on survival of zirconia-based two-unit cantilever resin-bonded fixed dental prosthesis (RB- FDP) by long-term dynamic loading in a chewing simulator. Human maxillary central incisors (n = 32) were endodontically treated and alveolar bone loss was simulated: 0% (group B), 25% (group C), and 50% (group D). RB-FDPs were adhesively luted. Zirconia full crown two-unit FDPs served as control (group A). Specimens were exposed to simulated clinical function by two subsequent sequences of thermal-cycling (2 × 3.000) parallel to mechanical loading (1.2 × 10(6) load cycles) (TCML; first sequence: load 1-25 N; second sequence: load 1-50 N). Tooth mobility increased significantly as the simulated bone level decreased (p < 0.001). Log-rank tests revealed no significant differences between experimental groups (p = 0.479). The results support the assumption that zirconia-based two-unit cantilever RB-FDPs may be an appropriate treatment option, even if abutment tooth mobility increase because of alveolar bone loss. However, debonding of zirconia-based two-unit RB-FDPs will be a likely event, whereas fatal failures of the abutment teeth may not occur.
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Authors | Guido Sterzenbach, Rene Tunjan, Martin Rosentritt, Michael Naumann |
Journal | Journal of biomedical materials research. Part B, Applied biomaterials
(J Biomed Mater Res B Appl Biomater)
Vol. 102
Issue 2
Pg. 244-9
(Feb 2014)
ISSN: 1552-4981 [Electronic] United States |
PMID | 23997026
(Publication Type: Journal Article)
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Copyright | Copyright © 2013 Wiley Periodicals, Inc. |
Chemical References |
- Resins, Synthetic
- Zirconium
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Topics |
- Alveolar Bone Loss
- Dental Prosthesis
- Humans
- Incisor
- Male
- Resins, Synthetic
- Stress, Mechanical
- Tooth Mobility
- Zirconium
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