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Materials (Basel). 2019 Oct 21;12(20). pii: E3444. doi: 10.3390/ma12203444.

New Dental Implant with 3D Shock Absorbers and Tooth-Like Mobility-Prototype Development, Finite Element Analysis (FEA), and Mechanical Testing.

Author information

1
Department of Cranio-Maxillofacial Surgery and Radiology, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. avram.manea@umfcluj.ro.
2
Department of Cranio-Maxillofacial Surgery and Radiology, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. gbaciut@umfcluj.ro.
3
Department of Oral Rehabilitation, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. mbaciut@yahoo.com.
4
Department of Mechanical Systems Engineering, Faculty of Machine Building, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania. pdcluj@gmail.com.
5
Department of Manufacturing Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania. dscomsa@tcm.utcluj.ro.
6
Department of Mechanical Systems Engineering, Faculty of Machine Building, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania. ovidiu.buiga@omt.utcluj.ro.
7
Department of Cranio-Maxillofacial Surgery and Radiology, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. veronicatrombitas@gmail.com.
8
Department of Medical Education, Faculty of Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. hcolosi@umfcluj.ro.
9
Department of Cranio-Maxillofacial Surgery and Radiology, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. ilmitre@yahoo.com.
10
Department of Oral Rehabilitation, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. roxana.bordea@ymail.com.
11
Department of Prosthetics and Dental Materials, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. mnole22@yahoo.com.
12
Department of Surgical specialties, Faculty of Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. lenghel.manuela@gmail.com.
13
Department of Oral Rehabilitation, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. dr_brans@umfcluj.ro.
14
Department of Cranio-Maxillofacial Surgery and Radiology, Faculty of Dental Medicine, University of Medicine and Pharmacy 'Iuliu Hatieganu', 400012 Cluj-Napoca, Romania. florin.onisor@umfcluj.ro.

Abstract

BACKGROUND:

Once inserted and osseointegrated, dental implants become ankylosed, which makes them immobile with respect to the alveolar bone. The present paper describes the development of a new and original implant design which replicates the 3D physiological mobility of natural teeth. The first phase of the test followed the resistance of the implant to mechanical stress as well as the behavior of the surrounding bone. Modifications to the design were made after the first set of results. In the second stage, mechanical tests in conjunction with finite element analysis were performed to test the improved implant design.

METHODS:

In order to test the new concept, 6 titanium alloy (Ti6Al4V) implants were produced (milling). The implants were fitted into the dynamic testing device. The initial mobility was measured for each implant as well as their mobility after several test cycles. In the second stage, 10 implants with the modified design were produced. The testing protocol included mechanical testing and finite element analysis.

RESULTS:

The initial testing protocol was applied almost entirely successfully. Premature fracturing of some implants and fitting blocks occurred and the testing protocol was readjusted. The issues in the initial test helped design the final testing protocol and the new implants with improved mechanical performance.

CONCLUSION:

The new prototype proved the efficiency of the concept. The initial tests pointed out the need for design improvement and the following tests validated the concept.

KEYWORDS:

ISO 14801; biomaterials; dental implant; fatigue test; finite element analysis; titanium

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