title: Experimental and computational investigation of Morse taper conometric system reliability for the definition of fixed connections between dental implants and prostheses.
abstract: Nowadays, dental implantology is a reliable technique for treatment of partially and completely edentulous patients. The achievement of stable dentition is ensured by implant-supported fixed dental prostheses. Morse taper conometric system may provide fixed retention between implants and dental prostheses. The aim of this study was to investigate retentive performance and mechanical strength of a Morse taper conometric system used as implant-supported fixed dental prostheses retention. Experimental and finite element investigations were performed. Experimental tests were achieved on a specific abutment-coping system, accounting for both cemented and non-cemented situations. The results from the experimental activities were processed to identify the mechanical behavior of the coping-abutment interface. Finally, the achieved information was applied to develop reliable finite element models of different abutment-coping systems. The analyses were developed accounting for different geometrical conformations of the abutment-coping system, such as different taper angle. The results showed that activation process, occurred through a suitable insertion force, could provide retentive performances equal to a cemented system without compromising the mechanical functionality of the system. These findings suggest that Morse taper conometrical system can provide a fixed connection between implants and dental prostheses if proper insertion force is applied. Activation process does not compromise the mechanical functionality of the system.
authors: Department of Neurosciences, University of Padova, Padova, Italy.
authors: Eriberto
authors: E
authors: Bressan
authors: Department of Prosthodontics, Dental Clinic, School of Dentistry, University of Milan, Milan, Italy.
authors: Diego
authors: D
authors: Lops
authors: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.
authors: Cristiano
authors: C
authors: Tomasi
authors: Department of Neurosciences, University of Padova, Padova, Italy.
authors: Sara
authors: S
authors: Ricci
authors: Department of Neurosciences, University of Padova, Padova, Italy michele.stocchero@studenti.unipd.it.
authors: Michele
authors: M
authors: Stocchero
authors: Department of Industrial Engineering, University of Padova, Padova, Italy Centre for Mechanics of Biological Materials, University of Padova, Padova, Italy.
authors: Emanuele Luigi
authors: EL
authors: Carniel
mesh_terms: D019245:Compressive Strength; D003198:Computer Simulation; D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention / Q000295:instrumentation* / Q000379:methods; D003799:Dental Stress Analysis / Q000379:methods; D055119:Elastic Modulus; D019544:Equipment Failure Analysis; D020342:Finite Element Analysis; D017276:Friction; D008962:Models, Theoretical; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013718:Tensile Strength
chemical_list: D015921:Dental Implants
keywords: Dental implantology; Morse taper conometric system; mechanical properties