Influence of age, training, intraoral scanner, and software version on the scan accuracy of inexperienced operators.

Zarauz, Cristina; Pradíes, Guillermo Jesus; Chebib, Najla; Dönmez, Mustafa Borga; Karasan, Duygu Narin; Sailer, Irena (2023). Influence of age, training, intraoral scanner, and software version on the scan accuracy of inexperienced operators. Journal of prosthodontics, 32(S2), pp. 135-141. Wiley 10.1111/jopr.13785

Text Journal_of_Prosthodontics_-_2023_-_Zarauz_-_Influence_of_age_training_intraoral_scanner_and_software_version_on_the_scan.pdf - Accepted Version Restricted to registered users only until 14 October 2024. Available under License Publisher holds Copyright. Download (965kB)

PURPOSE

To evaluate the effect of operator age on the scan accuracy (trueness and precision) of inexperienced operators when compared with experienced operators, and how training, intraoral scanner (IOS), and software version affect scan accuracy.

MATERIAL AND METHODS

Thirty-four operators were sorted into groups: G1 (operators <25 years old, no experience), G2 (operators >40 years old, no experience), and G3 (experienced IOS operators). They conducted partial-arch scans before and after a 4-session training with two IOSs (Trios 3 and True Definition) and two software versions. These scans were compared with the reference scans obtained from conventional impressions and a laboratory scanner (IScan D103i) to evaluate trueness (mean root mean square values) and precision (standard deviation of root mean square values) with a software program (Geomagic Control X). Kruskal-Wallis and post-hoc Dunn's tests were used to evaluate the effect of age on the scan accuracy of inexperienced groups when compared with experienced operators, while the effect of training, IOS, and software version on scan accuracy was evaluated with Wilcoxon or Mann-Whitney U tests (α = 0.05).

RESULTS

Before training, G1 and G2 scans had similar accuracy (p ≥ 0.065). After training, G1 scans had higher accuracy when IOS data was pooled and had higher precision with TD (p ≤ 0.004). Training increased the scan accuracy (p < 0.001), while newer software increased the trueness of inexperienced operator scans (p = 0.015).

CONCLUSIONS

Age affected scan accuracy of inexperienced operators after training, indicating that extended training may be required for older operators. Training increased the scan accuracy and newer software increased the trueness of inexperienced operator scans. This article is protected by copyright. All rights reserved.

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