Fatigue life estimation in dental implants

Ayllón, J. M.; Navarro, C.; Vázquez, Jesús; Domı́nguez, J.

doi:10.1016/j.engfracmech.2014.03.011

Cited by 36 publications

(32 citation statements)

References 13 publications

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“…22 Ayllón et al tested commercial cp-Ti G4 dental implants with the same diameter and design of the cone Morse model tested in this work. 8 Their tests were conducted with maximum loads of 220, 200, 160, 150 and 140 N, which yielded lives of 9545, 14 630, 56 398, 182 613 and 185 723 cycles, respectively. One test with 130 N was interrupted after 5 × 10 6 cycles without failure.…”

Section: Discussionmentioning

confidence: 99%

“…Relevant implications for implant life are related to the ability of the implant-abutment junction to transmit the load to the structure during mastication efforts. The stress distribution upon implantable devices relies on the interface between hard tissue and the implant-abutment junction, 7,8 but an overall approach seems reasonable, because the fatigue endurance of all components has a significant influence on the long-term performance of the devices. 4 Replacement of a single missing teeth continues to be a challenge, especially for maxillary and mandibular anterior areas where esthetic, mechanical (integrity of the implant-abutment joint) and biological requirements are amplified.…”

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confidence: 99%

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Comparative study of compressive and fatigue strength of dental implants made of nanocrystalline Ti Hard and microcrystalline Ti G4

Elias

Fernandes

Biasi

2016

Fatigue Fract Eng Mat Struct

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Over the last decades, much research has been done to improve the surface quality of dental implants, but there was no change in the materials used to manufacture the implants. The purpose of the present work is to compare the compressive strength and fatigue failure of dental implants made with a new material, nanocrystalline Ti grade 4 fabricated by Equal Channel Angular Pressing (ECAP) (Ti Hard) with a traditional material, microcrystalline Ti grade 4 (Ti G4). Machined screw‐shaped implants with three different designs (Easy, Torq and Flash) made with the two materials were subjected to static and dynamic compressive loads. Implants made with Ti Hard showed higher static compressive strength (Easy: 889.9 ± 79.4 N, Flash: 588.9 ± 74.7 N, Torq: 498.3 ± 54.6 N) than implants made with TiG4 (Easy: 776.4 ± 74.5 N, Flash: 308.8 ± 15.2 N, Torq: 410.3 ± 25.2 N) and higher fatigue strength for 5 106 cycles (Easy: 400 N, Flash: 280 N, Torq: 260 N) than implants made with TiG4 (Easy: 300 N, Flash: 200 N, Torq: 200 N). The higher fatigue strength of nanocrystalline Ti G4 is attributed to a delay in crack initiation.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Comparative study of compressive and fatigue strength of dental implants made of nanocrystalline Ti Hard and microcrystalline Ti G4

Elias

Fernandes

Biasi

2016

Fatigue Fract Eng Mat Struct

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“…These forces give masticatory force of 118.2 N in angle of approximately 75° to the occlusal plane. The FEM model was fixed at the bottom surface of bone as shown in Fig 1. J.M.Ayllon, et al [1] developed a methodology to estimate the life of an implant based on material properties and on a numerical model of the implant. He analysed the influence of different factors such as stress concentration at the external thread and the surface treatment.…”

Section: Methodsmentioning

confidence: 99%

“…FINITE ELEMENT ANALYSIS J.M. Ayllon, et al [1] in his study the geometry of the implant was defined with the software SOLIDWORKS and then exported to ANSYS where implant was meshed and solved. The purpose of this numerical model is to obtain the stresses and strains in the implant, as well as the Stress intensity factor along the path of the crack.…”

Section: IIImentioning

confidence: 99%

Fatigue Life of Dental Implant- A Review

Patil¹

2016

IOSR

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The reliability and stability of the implant abutment and implant-bone interfaces plays a great role for evaluation of the long-term success of a dental implant. In general, fatigue life depends on many factor such as implant itself, physical properties of bone as well as on other morphological characteristics that are patient dependent. This review studies the fatigue behaviour of dental implants made of commercially pure titanium alloy Ti-6Al-4V. The success or failure of an implant is determined by how the stresses at the bone-implant interface are transferred to the surrounding bones. Maximum stress concentration was presented in the connection of abutment-screw-implant as well as the first threads of the implant where the failure of implant occurs. Overload is the most common reason for implant failure. Source of the overload is due to patient parafunction habits and incorrect prosthesis design, which is responsible for creation of undesired bending moments. The prediction of fatigue life of the dental implant the finite element stress analysis with computer code of ANSYS was used. Fatigue life of dental implant is calculated based on Goodman, Soderberg, Gerber and Mean-Stress theories.

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“…The prediction of fatigue failure is important forprevention of serious medical complications. For the fatigue life P prediction of pedicle-screws was used the method proposed by Navarro [6,7,8] and comparison with other methods used in multiaxial fatigue [9]. In the work, fatigue resistance of hollow pedicle-screw and solid pedicle-screws were compared.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction of pedicle screw for spinal surgery

Major¹,

Kocour²,

Cyrus³

2015

Frattura Ed Integrità Strutturale

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This paper is dedicated to fatigue estimation of implants for spinal surgery. This article deals especially with special case of hollow pedicle screw. Implant systems utilizing specially designed spinal instrumentation are often used in these surgical procedures. The most common surgical procedure is spinal fusion, also known as spondylodesis, is a surgical technique used to join two or more vertebra. Implants are subjected to many loading cycles during their life, especially in the case of other degenerative changes in the skeleton, there are often changes in loading conditions, which often cannot be accurately determined. These changes often lead to further bending load in the thread. Hollow screws studied in this work show higher fatigue resistance than other types of implants.

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Fatigue life estimation in dental implants

Cited by 36 publications

References 13 publications

Comparative study of compressive and fatigue strength of dental implants made of nanocrystalline Ti Hard and microcrystalline Ti G4

Comparative study of compressive and fatigue strength of dental implants made of nanocrystalline Ti Hard and microcrystalline Ti G4

Fatigue Life of Dental Implant- A Review

Fatigue life prediction of pedicle screw for spinal surgery

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