Naumann, M. and von Stein-Lausnitz, M. and Rosentritt, M. and Walter, C. and Meyer-Luckel, H. and Sterzenbach, G. (2018) Impact of simulated reduced alveolar bone support, increased tooth mobility, and distal post-supported, root-treated abutment tooth on load capability of all-ceramic zirconia-supported cantilever FDP. CLINICAL ORAL INVESTIGATIONS, 22 (8). pp. 2799-2807. ISSN 1432-6981, 1436-3771
Full text not available from this repository. (Request a copy)Abstract
Objectives The aim of this in vitro study was an analysis of the impact of simulated reduced alveolar bone support and post-restored, endodontically treated distal abutment tooth on load capability of all-ceramic zirconia-based cantilever-fixed dental prosthesis (CFDP). Material and methods The roots of human lower sound premolars (n = 80) were divided into five experimental groups to be restored with all-ceramic zirconia-supported three-unit CFDP regarding bone loss (BL) relative to the cement-enamel junction (CEJ): 2 mm below CEJ = 0% BL (control group), group 25% distal BL, group 50% distal BL, group 50% mesial and distal BL, and group 50% distal BL and adhesive post-supported restoration. Specimens were exposed to simulated clinical function by thermo-mechanical loading (6.000 cycles 5 degrees-55 degrees; 1.2 x 10(6) cycles 0-50 N) and subsequent linear loading until failure. Results Tooth mobility increased significantly for groups with simulated bone loss (p < 0.001). Four specimens failed during thermal cycling and mechanical loading (TCML). The maximum load capability ranged from 350 to 569 N, and did not differ significantly between experimental groups (p = 0.095). Groups with simulated bone loss revealed more tooth fractures at distal abutment teeth, whereas technical failures were more frequent in the control group (p = 0.024). Conclusions Differences of alveolar bone support and respectively increased tooth mobility between mesial and distal abutments did not influence load capability. A distal adhesively post-and-core-supported, root-treated abutment tooth did not increase risk of three-unit CFDP failure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FIXED DENTAL PROSTHESES; PARTIAL DENTURES FPDS; LEAST 5 YEARS; COMPLICATION RATES; OBSERVATION PERIOD; STRESS-ANALYSIS; TEETH; SURVIVAL; PERFORMANCE; PROSTHODONTICS; Post-and-core; Fixed dental prosthesis; Load simulation; Bone loss; Fracture resistance |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Oct 2019 08:57 |
| Last Modified: | 10 Oct 2019 08:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/13586 |
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