Sterzenbach, G. and Rosentritt, M. and Frankenberger, R. and Paris, S. and Naumann, M. (2012) Loading Standardization of Postendodontic Restorations In Vitro: Impact of Restorative Stage, Static Loading, and Dynamic Loading. OPERATIVE DENTISTRY, 37 (1). pp. 71-79. ISSN 0361-7734, 1559-2863
Full text not available from this repository. (Request a copy)Abstract
Objective: The load capability of post-restored endodontically treated teeth (ETT) can be determined at different restorative stages. It was the aim of this study to compare the load capability of ETT at these stages. Materials and Methods: Maxillary central incisors were divided into 4 groups (n=10) and endodontically treated. Specimens were restored with: (I) only glass fiber posts (GFP); (II) GFP and composite build-up with 2 mm ferrule; (III and IV) with additional adhesively luted all-ceramic crowns. Group (I) to (III) were statically loaded, and group (IV) was exposed to thermomechanical loading (TML) and subsequent static loading. Results: The lowest median load level of 73 N was determined for group (I). The maximum median load value of 331 N was found for group (III). The comparison of Fmax [N] of group (I), (II) and (III) revealed significant differences between the groups (p<0.001). The specimens of group (IV) failed at significantly lower load values (p<0.005) as similarly restored specimens of group (III) which were only statically loaded. The stage of restoration and TML loading prior to static loading had a significant impact on fracture patterns (p=0.006). Conclusion: Every additional restorative step torwards a final crown-restored ETT significantly increased the load capability. TML prior to load-to-fracture testing of the complete restorative complex, ie. post, core and crown, significantly decreased maximum load capability.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ENDODONTICALLY TREATED TEETH; FIBER-REINFORCED COMPOSITE; ALL-CERAMIC CROWNS; STRUCTURALLY COMPROMISED TEETH; FRACTURE-RESISTANCE; CORE SYSTEMS; DIFFERENT POST; MAXILLARY INCISORS; SURVIVAL RATE; CLINICAL-PERFORMANCE; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2020 11:55 |
| Last Modified: | 25 May 2020 11:55 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19569 |
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