Joda, Tim Alexander; Voumard, Benjamin; Zysset, Philippe K.; Brägger, Urs; Ferrari, Marco (2018). Ultimate force and stiffness of 2-piece zirconium dioxide implants with screw-retained monolithic lithium-disilicate reconstructions. Journal of prosthodontic research, 62(2), pp. 258-263. Elsevier 10.1016/j.jpor.2017.11.002
![[img]](https://boris.unibe.ch/style/images/fileicons/text.png) |
Text
1-s2.0-S1883195817301160-main.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (1MB) |
PURPOSE
The aims were to analyze stiffness, ultimate force, and failure modes of a 2-piece zirconium dioxide (ZrO) implant system.
METHODS
Eleven 2-piece ZrO implants, each mounted with ZrO abutments plus bonded monolithic lithium disilicate (LS) restorations, were grouped for 3.3mm (A) and 4.1mm (B) diameter samples. Quasi-static load was monotonically applied under a standardized test set-up (loading configuration according to DIN ISO 14801). The ultimate force was defined as the maximum force that implants are able to carry out until fracture; stiffness was measured as the maximum slope during loading. An unpaired t-test was performed between group A and B for ultimate force and stiffness (p<0.05).
RESULTS
Force-displacement curves revealed statistically homogenous inner-group results for all samples. Failure modes showed characteristic fractures at the neck configuration of the implants independent of the diameter. Mean stiffness was 1099N/mm (±192) for group A, and significantly lower compared to group B with 1630N/mm (±274) (p<0.01); whereas mean ultimate force was 348N (±53) for group A, and significantly increased for group B with 684N (±29) (p<0.0001).
CONCLUSIONS
The examined 2-piece ZrO implant system mounted to LS-restorations seems to be a stable unit under in-vitro conditions with mechanical properties compared to loading capacity of physiological force. The metal-free implant reconstructions demonstrated high stiffness and ultimate force under quasi-static load for single tooth replacement under consideration of the dental indication of narrow and standard diameter implants.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB [discontinued] 04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology |
UniBE Contributor: |
Joda, Tim, Voumard, Benjamin, Zysset, Philippe, Brägger, Urs |
Subjects: |
500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health 600 Technology |
ISSN: |
1883-1958 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Vanda Kummer |
Date Deposited: |
18 Jan 2019 09:07 |
Last Modified: |
02 Mar 2023 23:31 |
Publisher DOI: |
10.1016/j.jpor.2017.11.002 |
PubMed ID: |
29249574 |
Uncontrolled Keywords: |
DIN ISO 14801 Dental implants Failure mode Lithium disilicate (LS(2)) Zirconium dioxide (ZrO(2)) |
BORIS DOI: |
10.7892/boris.123954 |
URI: |
https://boris.unibe.ch/id/eprint/123954 |
Actions (login required)
 |
Edit item |