Maria Menini1, Paolo Pesce2, Francesco Pera1, Fabrizio Barberis3, Alberto Lagazzo3, Ludovica Bertola3, Paolo Pera1. 1. Implant and Prosthetic Dentistry Unit, University of Genoa, Ospedale S. Martino (pad. 4), L. Rosanna Benzi 10, 16132 Genoa, Italy. 2. Implant and Prosthetic Dentistry Unit, University of Genoa, Ospedale S. Martino (pad. 4), L. Rosanna Benzi 10, 16132 Genoa, Italy. Electronic address: paolo.pesce@unige.it. 3. Department of Civil, Chemical and Environmental Engineering, University of Genoa, Via Montallegro, 1-16145 Genoa, Italy.
Abstract
OBJECTIVES: The aim of the present study was to investigate the biocompatibility and mechanical characteristics of dental implant frameworks made of carbon fiber composite. METHODS: The biocompatibility of intact samples and fragments was evaluated by cell count and MTT test according to EN-ISO 10993-5:2009 directions. Destructive and non-destructive mechanical tests were performed in order to evaluate: porosity, static and dynamic elastic modulus of carbon fiber samples. These tests were conducted on different batches of samples manufactured by different dental technicians. The samples were evaluated by optical microscope and by SEM. A compression test was performed to compare complete implant-supported fixed dentures, provided with a metal or carbon fiber framework. RESULTS: Carbon fiber intact and fragmented samples showed optimal biocompatibility. Manufacture technique strongly influenced the mechanical characteristics of fiber-reinforced composite materials. The implant-supported full-arch fixed denture provided with a carbon fiber framework, showed a yield strength comparable to the implant-supported full-arch fixed denture, provided with a metal framework. SIGNIFICANCE: Carbon fiber-reinforced composites demonstrated optimal biocompatibility and mechanical characteristics. They appear suitable for the fabrication of frameworks for implant-supported full-arch dentures. Great attention must be paid to manufacture technique as it strongly affects the material mechanical characteristics.
OBJECTIVES: The aim of the present study was to investigate the biocompatibility and mechanical characteristics of dental implant frameworks made of carbon fiber composite. METHODS: The biocompatibility of intact samples and fragments was evaluated by cell count and MTT test according to EN-ISO 10993-5:2009 directions. Destructive and non-destructive mechanical tests were performed in order to evaluate: porosity, static and dynamic elastic modulus of carbon fiber samples. These tests were conducted on different batches of samples manufactured by different dental technicians. The samples were evaluated by optical microscope and by SEM. A compression test was performed to compare complete implant-supported fixed dentures, provided with a metal or carbon fiber framework. RESULTS:Carbon fiber intact and fragmented samples showed optimal biocompatibility. Manufacture technique strongly influenced the mechanical characteristics of fiber-reinforced composite materials. The implant-supported full-arch fixed denture provided with a carbon fiber framework, showed a yield strength comparable to the implant-supported full-arch fixed denture, provided with a metal framework. SIGNIFICANCE: Carbon fiber-reinforced composites demonstrated optimal biocompatibility and mechanical characteristics. They appear suitable for the fabrication of frameworks for implant-supported full-arch dentures. Great attention must be paid to manufacture technique as it strongly affects the material mechanical characteristics.
Authors: Mario Dioguardi; Camilla Stellacci; Lucia La Femina; Francesca Spirito; Diego Sovereto; Enrica Laneve; Massimo Francesco Manfredonia; Alfonso D'Alessandro; Andrea Ballini; Stefania Cantore; Lorenzo Lo Muzio; Giuseppe Troiano Journal: Medicina (Kaunas) Date: 2022-07-04 Impact factor: 2.948