Single geometry abutment for narrow and extra-narrow implant systems: Survival and failure modes.

Autor: Gutierres E; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: eliezer.gutierres@usp.br., Bergamo ETP; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: edmaratatiely@gmail.com., Carvalho LF; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: laurafcarvalho@usp.br., Coelho PG; Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA. Electronic address: pgc51@med.miami.edu., Campos TMB; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil; Department of Physics, Aeronautics Technological Institute, São José dos Campos, SP, Brazil. Electronic address: moreiratiago22@gmail.com., Piza MMT; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: mariana.piza@usp.br., Lopes ACO; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: adolfo.lopes@usp.br., Benalcazar Jalkh EB; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: ernestobenalcazarj@gmail.com., Bonfante EA; Department of Prosthodontics and Periodontology, Bauru School of Dentistry, São Paulo University - USP, Bauru, SP, Brazil. Electronic address: estevam.bonfante@fob.usp.br.
Jazyk: angličtina
Zdroj: Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2023 Jul; Vol. 143, pp. 105872. Date of Electronic Publication: 2023 May 08.
DOI: 10.1016/j.jmbbm.2023.105872
Abstrakt: The use of identical prosthetic components for all implant diameters could reduce the production costs by companies and the complexity of component selection for the clinician and his team. However, it would imply in reduction of thickness of the cervical walls of tapered internal connection implants, which could compromise the reliability of narrow and extra-narrow implants. Therefore, this study aims to evaluate the probability of survival and failure modes of extra-narrow implant systems with the same internal diameter as standard-diameter implants using the same prosthetic components. It was used eigth different implant system configurations, including narrow (Ø 3.3 mm) (N) extra-narrow (Ø 2.9 mm) (EN) and extra-narrow-scalloped (Ø 2.9 mm) (ENS) implants, both with cementable abutments (Ce) or titanium bases (Tib) and one-piece implants (Ø 2.5 mm and Ø 3.0 mm) (OP) (Medens, Itu, SP, Brazil), comprising the following groups: OP 3.0; OP 2.5; N Ce; N Tib; EN Ce, EN Tib, ENS-Ce and ENS-Tib. The implants were embedded using polymethylmethacrylate acrylic resin in a 15 mm matrix. Standardized maxillary central incisor crowns were virtually designed and milled to fit on the different studied abutments and cemented using a dual self-adhesive resin cement. The specimens were submitted to SSALT (Step Stress Accelerated Life Testing) at 15 Hz in water until failure or suspension of the test, until a maximum load of 500 N. Fractographic analysis of the failed specimens were realized in scanning electron microscopy. All implant systems demonstrated high probability of survival (90-100%) for missions at 50 and 100 N and values of characteristic strength superior to 139 N. Failure modes were restricted to the abutment in all the implant configurations tested. Therefore, the use extra-narrow implants with standardized prosthetic components for different implant diameters is a viable option for the replacement of anterior teeth.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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