Naumann, Michael and Rosentritt, Martin and Preuss, Anja and Dietrich, Thomas (2006) The effect of alveolar bone loss on the load capability of restored endodontically treated teeth: A comparative in vitro study. JOURNAL OF DENTISTRY, 34 (10). pp. 790-795. ISSN 0300-5712,
Full text not available from this repository. (Request a copy)Abstract
Objectives: The aim of the present investigation was to study the influence of a reduced bone support on the fracture resistance of endodontically treated teeth restored with glass fibre-reinforced posts (FRC). Methods: 30 caries-free maxillary central incisors were divided into 3 groups (n = 10). Endodontic treatment was performed. Teeth were flattened 2 mm above the cemento-enamel junction. Group I (control) simulated a clinical situation without horizontal bone loss. In group II a horizontal bone loss of 25% and in group III of 50% was simulated. All specimens received FRC posts and composite core restorations. All-ceramic crowns were adhesively cemented. Specimens were exposed to thermal cycling and mechanical loading (TCML) and finally statically loaded until failure in a universal testing machine (v = I mm/min). Non-parametric tests were used to compare median fracture loads between groups. Fracture modes were compared using Fisher's exact test. Results: The median fracture load values (min/max) in [N] were: group I = 501 (326/561), group II = 422 (323/495); group III = 352 (266/406), p = 0.004. Two specimens in each group II and III failed during TCML. Statistical analysis revealed statistically significant differences between all test groups regarding maximum fracture load and mode of fracture. Conclusions: The fracture resistance of endodontically treated teeth restored adhesively with a FRC post, composite core, and all-ceramic crown is dependent on the level of surrounding supporting periodontal bone. Loss of alveolar bone loss due to periodontal disease may lead to an increased risk of failure. (c) 2006 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | STRUCTURALLY COMPROMISED TEETH; CORE SYSTEMS; PROSTHETIC TREATMENT; FRACTURE STRENGTH; DIFFERENT POST; SURVIVAL RATE; RECONSTRUCTED TEETH; MAXILLARY INCISORS; FIBER POSTS; DENTIN; fracture load; post and core technique; bone loss; chewing simulation; glass fibre-reinforced post |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Jan 2021 06:15 |
| Last Modified: | 20 Jan 2021 06:15 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33813 |
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