Next Article in Journal
Preparation and Electrochemical Characterization of Organic–Inorganic Hybrid Poly(Vinylidene Fluoride)-SiO2 Cation-Exchange Membranes by the Sol-Gel Method Using 3-Mercapto-Propyl-Triethoxyl-Silane
Previous Article in Journal
Effect of Silica Fume in Concrete on Mechanical Properties and Dynamic Behaviors under Impact Loading
Previous Article in Special Issue
Load-Bearing Capacity of Zirconia Crowns Screwed to Multi-Unit Abutments with and without a Titanium Base: An In Vitro Pilot Study
Open AccessArticle

Improvement in Fatigue Behavior of Dental Implant Fixtures by Changing Internal Connection Design: An In Vitro Pilot Study

1
Department of Prosthodontics, School of Medicine, Ewha Womans University, Seoul 07985, Korea
2
Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Korea
3
Kim and Lee Dental Clinic, Seoul 06626, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Materials 2019, 12(19), 3264; https://doi.org/10.3390/ma12193264
Received: 9 September 2019 / Revised: 3 October 2019 / Accepted: 4 October 2019 / Published: 7 October 2019
(This article belongs to the Special Issue Dental Implant Materials 2019)
(1) Background: The stability of the dental implant–abutment complex is necessary to minimize mechanical complications. The purpose of this study was to compare the behaviors of two internal connection type fixtures, manufactured by the same company, with different connection designs. (2) Methods: 15 implant–abutment complexes were prepared for each group of Osseospeed® TX (TX) and Osseospeed® EV (EV): 3 for single-load fracture tests and 12 for cyclic-loaded fatigue tests (nominal peak values as 80%, 60%, 50%, and 40% of the maximum breaking load) according to international standards (UNI EN ISO 14801:2013). They were assessed with micro-computed tomography (CT), and failure modes were analyzed by scanning electron microscope (SEM) images. (3) Results: The maximum breaking load [TX: 711 ± 36 N (95% CI; 670–752), EV: 791 ± 58 N (95% CI; 725–857)] and fatigue limit (TX: 285 N, EV: 316 N) were higher in EV than those in TX. There was no statistical difference in the fracture areas (P > 0.99). All specimens with 40% nominal peak value survived 5 × 106 cycles, while 50% specimens failed before 105 cycles. (4) Conclusions: EV has improved mechanical properties compared with TX. A loading regimen with a nominal peak value between 40% and 50% is ideal for future tests of implant cyclic loading. View Full-Text
Keywords: dental implants; fracture strength; mechanical stress; fatigue; dental implant–abutment connection; dental implant–abutment design dental implants; fracture strength; mechanical stress; fatigue; dental implant–abutment connection; dental implant–abutment design
Show Figures

Figure 1

MDPI and ACS Style

Choi, N.-H.; Yoon, H.-I.; Kim, T.-H.; Park, E.-J. Improvement in Fatigue Behavior of Dental Implant Fixtures by Changing Internal Connection Design: An In Vitro Pilot Study. Materials 2019, 12, 3264.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop