Evaluation of the Mechanical Reliability of Different Implant-Abutment Connections for Single Crowns According to the ISO 14801 Fatigue Test Protocol

2021 ◽  
Vol 36 (1) ◽  
pp. 47-54
Author(s):  
Geninho Thomé ◽  
André Gomes ◽  
Marcos de Moura ◽  
Christian Beng ◽  
Larissa Trojan
Keyword(s):  
Fatigue Test ◽  
Mechanical Reliability ◽  
Test Protocol ◽  
Implant Abutment ◽  
Iso 14801 ◽  
Single Crowns

Mechanical Reliability Evaluation of an Oral Implant-Abutment System According to UNI EN ISO 14801 Fatigue Test Protocol

2016 ◽  
Vol 25 (5) ◽  
pp. 613-618 ◽  
Author(s):  
Enrico Marchetti ◽  
Stefano Ratta ◽  
Stefano Mummolo ◽  
Simona Tecco ◽  
Raffaella Pecci ◽  
...  
Keyword(s):  
Fatigue Test ◽  
Reliability Evaluation ◽  
Mechanical Reliability ◽  
Test Protocol ◽  
Implant Abutment ◽  
Oral Implant ◽  
Iso 14801

Evaluation of an Endosseous Oral Implant System According to UNI EN ISO 14801 Fatigue Test Protocol

2014 ◽  
pp. 1 ◽  
Author(s):  
Enrico Marchetti ◽  
Stefano Ratta ◽  
Stefano Mummolo ◽  
Simona Tecco ◽  
Raffaella Pecci ◽  
...  
Keyword(s):  
Fatigue Test ◽  
Test Protocol ◽  
Oral Implant ◽  
Implant System ◽  
Iso 14801

Fatigue Evaluation of a New Two-Piece Dental Implant, Having a Replaceable Titanium Sleeve

2020 ◽  
Author(s):  
Chaushu Liat ◽  
Chaushu Gavriel
Keyword(s):  
Dental Implants ◽  
Fatigue Test ◽  
Dental Implant ◽  
Load Level ◽  
Endosseous Implant ◽  
Fatigue Evaluation ◽  
Iso 14801 ◽  
Dynamic Fatigue

Abstract A new two-piece dental implant, having a replaceable thin titanium sleeve in its 5mm crestal part was designed. The use of a sleeve of near 0.2mm thickness reduces implant diameter by 0.4mm. Narrower diameter implants may increase the likelihood of component fracture in dental implant systems. 14 two-piece dental implants, with 25° abutment angle were subjected to a dynamic fatigue test according to DIN EN ISO 14801. The highest load at which a runout (non-failure) occurred at 5x106 cycles, amounted to 575 N. According to DIN EN ISO 14801, this load level was confirmed with n=3 samples. The Wöhler curve was determined. Accordingly, the runout at 106 cycles can be anticipated as 625N. The new two-piece Implant B™ design using a 0.2 mm sleeve is compatible with the DIN EN ISO 14801 standard for dimensions of 4.2mm diameter and 13mm length. It withstands dynamic fatigue test at least as good as any other standard endosseous implant.

Exceptional Fatigue Performances for Umbilical’s Super Duplex Seam Welded Tube Solutions

2014 ◽  
Author(s):  
Olivier Wagner ◽  
Gilles Thevenet ◽  
Jérôme Peultier ◽  
Jean-Philippe Roques ◽  
Henri Romazzotti
Keyword(s):  
Fatigue Test ◽  
Innovative Technology ◽  
Internal Diameter ◽  
Test Protocol ◽  
Acceptance Criteria ◽  
Welded Tube ◽  
Weld Fatigue ◽  
Extensive Program ◽  
The Stability ◽  
Definition Of

Since the last five years, an innovative technology for umbilical’s seam welded super duplex stainless steel tubes (grade 2507, UNS S32750) has been developed in order to meet new technical challenges. An extensive program of qualification, based on 4 dimensions covering the full manufacturing range, i.e. internal diameter and wall thickness, has been set. More than 11000 test results demonstrated the efficiency and the stability of the manufacturing process. The results were also confirming the expected properties of the tubes, in term of mechanical characteristics, corrosion resistance and manufacturing tolerances. At the end of this qualification phase, a Type Approval Certificate was delivered by an independent and official certifying authority demonstrating then, the suitability of the product for offshore static applications. The next step was to confirm the fatigue performance of the product to meet the requirements of umbilicals for dynamic applications. This paper describes how a dedicated fatigue test protocol has been jointly defined between a Major O&G player and the tube supplier. This protocol has been built in order to test the 3 dimensions already produced during the first step of the qualification, considering tube samples with and without orbital weld. Fatigue test programs are known to be very sensitive to the test parameters, i.e. temperature, test frequency and dimensional properties of the samples. As a consequence, special attention is paid to the description of the testing methodology, the selection of the acceptance criteria and the definition of the testing parameters. Finally, the results of this program are presented and discussed in order to assess the capability of the product with respect to the defined acceptance criteria.

A Novel Approach to Prove Bacterial Leakage of Implant-Abutment Connections In Vitro

2016 ◽  
Vol 42 (6) ◽  
pp. 452-457 ◽  
Author(s):  
Andreas Wachtel ◽  
Tycho Zimmermann ◽  
Tobias Spintig ◽  
Florian Beuer ◽  
Wolf-Dieter Müller ◽  
...  
Keyword(s):  
Color Change ◽  
Testing Machine ◽  
Loading Test ◽  
Universal Testing ◽  
Novel Approach ◽  
Implant Abutment ◽  
Optical Indicator ◽  
Bacterial Leakage ◽  
Iso 14801

Bacterial leakage from the implant-abutment-interface (IAI) is suspected of contributing to the development of peri-implantitis. The aim of the study was to develop a straightforward test setup to evaluate the bacterial leakage of the IAI of 2-piece implant systems under laboratory conditions. A test suspension of Enterococcus faecium was injected into 7 implants (PerioType Rapid Implants) prior to abutment fixation. The IAI was covered by kanamycin aesculn azide agar (KAAA), which serves as an optical indicator for E. faecium. The specimens were cyclically loaded with a force of 120 N for up to 1 000 000 cycles in a universal testing machine in accordance with the ISO 14801:2007 standard. The color change of the KAAA was recorded. Three of the 7 implants showed bacterial leakage before the cyclic loading test started. The bacterial tightness of the IAIs of the 4 remaining implants lasted for 35 680 ± 22 467 cycles on average. The experimental setup at hand provides the means for a straightforward evaluation of the bacterial tightness of the IAI of 2-piece dental implants.

Influence of superstructure geometry on the mechanical behavior of zirconia implant abutments: a finite element analysis

2014 ◽  
Vol 59 (6) ◽  
Author(s):  
Alexander Geringer ◽  
Stefan Diebels ◽  
Frank P. Nothdurft
Keyword(s):  
Finite Element ◽  
Boundary Conditions ◽  
Mechanical Behavior ◽  
Clinical Performance ◽  
Fatigue Tests ◽  
Point Of View ◽  
Fe Model ◽  
Element Analysis ◽  
Implant Abutment ◽  
Iso 14801

AbstractTo predict the clinical performance of zirconia abutments, it is crucial to examine the mechanical behavior of different dental implant-abutment connection configurations. The international standard protocol for dynamic fatigue tests of dental implants (ISO 14801) allows comparing these configurations using standardized superstructure geometries. However, from a mechanical point of view, the geometry of clinical crowns causes modified boundary conditions. The purpose of this finite element (FE) study was to evaluate the influence of the superstructure geometry on the maximum stress values of zirconia abutments with a conical implant-abutment connection. Geometry models of the experimental setup described in ISO 14801 were generated using CAD software following the reconstruction of computerized tomography scans from all relevant components. These models served as a basis for an FE simulation. To reduce the numerical complexity of the FE model, the interaction between loading stamp and superstructure geometry was taken into account by defining the boundary conditions with regard to the frictional force. The results of the FE simulations performed on standardized superstructure geometry and anatomically shaped crowns showed a strong influence of the superstructure geometry and related surface orientations on the mechanical behavior of the underlying zirconia abutments. In conclusion, ISO testing of zirconia abutments should be accompanied by load-bearing capacity testing under simulated clinical conditions to predict clinical performance.

A proposed fatigue test protocol for generic mechanical joints

2006 ◽  
Vol 13 (1) ◽  
pp. 136-154 ◽  
Author(s):  
Chul Young Park ◽  
Alten F. Grandt
Keyword(s):  
Fatigue Test ◽  
Test Protocol ◽  
Mechanical Joints
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