The aim of this study was to evaluate the influence of implant scanbody (ISB) wear on the accuracy of digital impression for complete-arch. A polymethylmethacrylate (PMMA) edentulous mandibular model with four internal hexagonal interlocking conical connections was scanned with an extraoral optical scanner to achieve a reference file. Four cylindrical polyetheretherketone (PEEK) ISBs were scanned 30 times with IOS, and the test files were aligned to the reference file with a best-fit algorithm. For each analog linear (ΔX, ΔY and ΔZ-axis) and angular deviations (ΔANGLE) were assessed. Euclidean distance (ΔEUC) was calculated from the linear deviation, reporting a mean of 82 µm (SD 61) ranging from 8 to 347 µm. ΔANGLE error mean was 0.33° (SD 0.20), ranging from 0.02 to 0.92°. From a multivariate analysis, when ΔEUC was considered as a response variable, a significant influence of ISB wear by scan number in interaction to position for implant 3.6 was identified (p < 0.0001); when ΔANGLE was considered as a response variable, a significant effect of position 3.6 was recorded ((p < 0.0001). The obtained results showed that the ISB wear negatively influenced the accuracy of IOS, suggesting that ISB base wear could be detrimental for the seating of ISBs on angulated implants.

Influence of implant scanbody wear on the accuracy of digital impression for complete-arch: a randomized in vitro trial / Arcuri, Lorenzo; Lio, Fabrizio; Campana, Veronica; Mazzetti, Vincenzo; Federici, Francesca Romana; Nardi, Alessandra; Galli, Massimo. - In: MATERIALS. - ISSN 1996-1944. - 15:3(2022). [10.3390/ma15030927]

Influence of implant scanbody wear on the accuracy of digital impression for complete-arch: a randomized in vitro trial

Arcuri, Lorenzo
Primo
;
Federici, Francesca Romana;Galli, Massimo
Ultimo
2022

Abstract

The aim of this study was to evaluate the influence of implant scanbody (ISB) wear on the accuracy of digital impression for complete-arch. A polymethylmethacrylate (PMMA) edentulous mandibular model with four internal hexagonal interlocking conical connections was scanned with an extraoral optical scanner to achieve a reference file. Four cylindrical polyetheretherketone (PEEK) ISBs were scanned 30 times with IOS, and the test files were aligned to the reference file with a best-fit algorithm. For each analog linear (ΔX, ΔY and ΔZ-axis) and angular deviations (ΔANGLE) were assessed. Euclidean distance (ΔEUC) was calculated from the linear deviation, reporting a mean of 82 µm (SD 61) ranging from 8 to 347 µm. ΔANGLE error mean was 0.33° (SD 0.20), ranging from 0.02 to 0.92°. From a multivariate analysis, when ΔEUC was considered as a response variable, a significant influence of ISB wear by scan number in interaction to position for implant 3.6 was identified (p < 0.0001); when ΔANGLE was considered as a response variable, a significant effect of position 3.6 was recorded ((p < 0.0001). The obtained results showed that the ISB wear negatively influenced the accuracy of IOS, suggesting that ISB base wear could be detrimental for the seating of ISBs on angulated implants.
2022
accuracy; complete arch; digital impression; intraoral optical scanning; scanbody; wear
01 Pubblicazione su rivista::01a Articolo in rivista
Influence of implant scanbody wear on the accuracy of digital impression for complete-arch: a randomized in vitro trial / Arcuri, Lorenzo; Lio, Fabrizio; Campana, Veronica; Mazzetti, Vincenzo; Federici, Francesca Romana; Nardi, Alessandra; Galli, Massimo. - In: MATERIALS. - ISSN 1996-1944. - 15:3(2022). [10.3390/ma15030927]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1651502
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