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10.3390/ma13122797
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Article

In Vitro Simulation of Dental Implant Bridges Removal: Influence of Luting Agent and Abutments Geometry on Retrievability

by
Andrea T. Lugas
1,2,
Mara Terzini
1,2,*,
Elisabetta M. Zanetti
3,
Gianmario Schierano
4,
Carlo Manzella
4,
Domenico Baldi
5,
Cristina Bignardi
1,2 and
Alberto L. Audenino
1,2
1
Department of Mechanical and Aerospace Engineering, Polytechnic University of Turin, 10129 Turin, Italy
2
PolitoBIOMed Lab, Polytechnic University of Turin, 10129 Turin, Italy
3
Department of Engineering, University of Perugia, 06125 Perugia, Italy
4
Department of Surgical Science, C.I.R. Dental School, University of Turin, 10126 Turin, Italy
5
Division of Prosthetic Dentistry, Department of Surgical Sciences (DISC), University of Genoa, 16132 Genoa, Italy
*
Author to whom correspondence should be addressed.
Materials 2020, 13(12), 2797; https://doi.org/10.3390/ma13122797
Submission received: 26 May 2020 / Revised: 19 June 2020 / Accepted: 19 June 2020 / Published: 21 June 2020
(This article belongs to the Special Issue Novel Load Systems for In Vitro Testing of Biomaterials and Medical Devices)
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Abstract

Implant fixed dental prostheses are widely used for the treatment of edentulism, often preferred over the screw-retained ones. However, one of the main features of an implant-supported prosthesis is retrievability, which could be necessary in the case of implant complications. In this study, the retrievability of implant-fixed dental prostheses was investigated considering two of the main factors dental practitioners have to deal with: the abutments geometry and the luting agent. Impulsive forces were applied to dental bridge models to simulate crowns’ retrievability in clinical conditions. The number of impulses and the impulsive force delivered during each test were recorded and used as retrievability indexes. One-hundred-and-five tests were conducted on 21 combinations of bridges and luting agents, and a Kruskal-Wallis test was performed on the results. The abutment geometry significantly influenced the number of impulses needed for retrieval (p < 0.05), and a cement-dependent trend was observed as well. On the other hand, the forces measured during tests showed no clear correlation with bridge retrievability. The best retrievability was obtained with long, slightly tapered abutments and a temporary luting agent.
Keywords: dental bridge; abutments geometry; luting agents; retrieval; Coronaflex dental bridge; abutments geometry; luting agents; retrieval; Coronaflex
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MDPI and ACS Style

Lugas, A.T.; Terzini, M.; Zanetti, E.M.; Schierano, G.; Manzella, C.; Baldi, D.; Bignardi, C.; Audenino, A.L. In Vitro Simulation of Dental Implant Bridges Removal: Influence of Luting Agent and Abutments Geometry on Retrievability. Materials 2020, 13, 2797. https://doi.org/10.3390/ma13122797

AMA Style

Lugas AT, Terzini M, Zanetti EM, Schierano G, Manzella C, Baldi D, Bignardi C, Audenino AL. In Vitro Simulation of Dental Implant Bridges Removal: Influence of Luting Agent and Abutments Geometry on Retrievability. Materials. 2020; 13(12):2797. https://doi.org/10.3390/ma13122797

Chicago/Turabian Style

Lugas, Andrea T., Mara Terzini, Elisabetta M. Zanetti, Gianmario Schierano, Carlo Manzella, Domenico Baldi, Cristina Bignardi, and Alberto L. Audenino. 2020. "In Vitro Simulation of Dental Implant Bridges Removal: Influence of Luting Agent and Abutments Geometry on Retrievability" Materials 13, no. 12: 2797. https://doi.org/10.3390/ma13122797

APA Style

Lugas, A. T., Terzini, M., Zanetti, E. M., Schierano, G., Manzella, C., Baldi, D., Bignardi, C., & Audenino, A. L. (2020). In Vitro Simulation of Dental Implant Bridges Removal: Influence of Luting Agent and Abutments Geometry on Retrievability. Materials, 13(12), 2797. https://doi.org/10.3390/ma13122797

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