Sterzenbach, Guido and Rosentritt, Martin and Meyer-Lueckel, Hendrik and Bitter, Kerstin and Naumann, Michael (2018) Failure loads of all-ceramic cantilever fixed dental prostheses on post-restored abutment teeth: influence of the post presence and post position. EUROPEAN JOURNAL OF ORAL SCIENCES, 126 (6). pp. 526-532. ISSN 0909-8836, 1600-0722
Full text not available from this repository. (Request a copy)Abstract
The influence of a fiber post-restored abutment tooth on the load capability of a three-unit zirconia framework cantilever fixed dental prosthesis (cFDP) was evaluated after simulated clinical function. Human lower sound premolars (n = 64) were distributed, in equal numbers, to four experimental groups: two vital abutment teeth (group I; control); mesial abutment tooth post-restored (group II); distal abutment tooth post-restored (group III); and mesial and distal abutment teeth post-restored (group IV). All specimens received an adhesively luted three-unit cFDP of veneered zirconia. Simulated clinical function was performed by two subsequent sequences of thermal-cycling (2 x 3,000 cycles) and mechanical loading (1.2 x 10(6) load cycles from 0 to 50 N) (TCML). Four specimens failed during TCML (one in each of groups I and IV and two in group II). The maximum load capability ranged from 365 to 538 N and was not significantly different between groups. Specimens with post-restored abutments failed mainly because of abutment tooth fracture of the distal abutment. The presence or position of post-restored abutment teeth has no significant impact on load capability of all-ceramic three-unit cFDPs. The risk of tooth fracture of the distal abutment teeth of a cFDP was significantly increased when one abutment tooth, irrespective of its position, was post-and-core restored.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PARTIAL DENTURES FPDS; LEAST 5 YEARS; STRESS-DISTRIBUTION; IN-VITRO; COMPLICATION RATES; OBSERVATION PERIOD; RESTORATIONS; DESIGN; IMPACT; PROSTHODONTICS; adhesive; all-ceramic restorations; dental prosthesis failure; endodontically treated teeth; zirconium oxide |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Oct 2019 06:09 |
| Last Modified: | 09 Oct 2019 06:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/13495 |
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