The paper addresses the dimensional tolerance and assembly accuracy of prosthetic components obtained by different manufacturing processes. The success of single tooth implant replacements hangs on the stability of the hexagonal connection, but no standard control procedures are available for its evaluation. The research aims at proposing a new protocol for the dimensional assessment of implant-Abutment connections, based on non-contact measurement and statistical data processing. The procedure is applied to machined-And cast-on abutments, as well of the matching implants. Samples are measured using an optical measuring microscope and data are processed to obtain the international tolerance (IT) grade. The rotational misfit is then calculated using the apothems of the external and the internal hexagon. As to the results, all the components are classified between IT8 and IT9 and the maximum rotational misfit is around 4 for all the assemblies, inferior to the critical limits for the screw joint stability. An objective dimensional characterization of prosthetic components and assemblies is reported, which is the basis for their reliability in clinical applications. From a wider perspective, an original measuring protocol is proposed, independent of parts assembly and based on international tolerances.

Tolerance analysis for cast vs machined dental implants / Atzeni, E.; Bassoli, E.; Denti, L.; Gatto, A.; Iuliano, L.; Minetola, P.; Salmi, A.. - 33:(2015), pp. 263-268. ((Intervento presentato al convegno 9th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2014 tenutosi a ita nel 2014 [10.1016/j.procir.2015.06.047].

Tolerance analysis for cast vs machined dental implants

Bassoli E.;Denti L.;Gatto A.;Iuliano L.;
2015-01-01

Abstract

The paper addresses the dimensional tolerance and assembly accuracy of prosthetic components obtained by different manufacturing processes. The success of single tooth implant replacements hangs on the stability of the hexagonal connection, but no standard control procedures are available for its evaluation. The research aims at proposing a new protocol for the dimensional assessment of implant-Abutment connections, based on non-contact measurement and statistical data processing. The procedure is applied to machined-And cast-on abutments, as well of the matching implants. Samples are measured using an optical measuring microscope and data are processed to obtain the international tolerance (IT) grade. The rotational misfit is then calculated using the apothems of the external and the internal hexagon. As to the results, all the components are classified between IT8 and IT9 and the maximum rotational misfit is around 4 for all the assemblies, inferior to the critical limits for the screw joint stability. An objective dimensional characterization of prosthetic components and assemblies is reported, which is the basis for their reliability in clinical applications. From a wider perspective, an original measuring protocol is proposed, independent of parts assembly and based on international tolerances.
9th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2014
ita
2014
33
263
268
Atzeni, E.; Bassoli, E.; Denti, L.; Gatto, A.; Iuliano, L.; Minetola, P.; Salmi, A.
Tolerance analysis for cast vs machined dental implants / Atzeni, E.; Bassoli, E.; Denti, L.; Gatto, A.; Iuliano, L.; Minetola, P.; Salmi, A.. - 33:(2015), pp. 263-268. ((Intervento presentato al convegno 9th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2014 tenutosi a ita nel 2014 [10.1016/j.procir.2015.06.047].
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S2212827115006903-main.pdf

Open access

Tipologia: Versione pubblicata dall'editore
Dimensione 746.82 kB
Formato Adobe PDF
746.82 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1221791
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 2
social impact