Flugge TV, Att W, Metzger MC, Nelson K.Precision
of Dental Implant Digitization Using Intraoral Scanners.
International journal of prosthodontics. 2016;29(3):277-83.
The digitization of scanbodies on dental implants is required to use computer-aided design/computer-assisted manufacture
processes for implant prosthetics. Little is known about the accuracy
of scanbody digitization with intraoral scannersand dental lab scanners. This study aimed to examine the precision
of different intraoral digital impression
systems as well as a dental lab scanner
using commercially available implant scanbodies.MATERIALS AND METHODS:
Two study models with a different number and distribution of dental implant scanbodies were produced from conventional implant impressions. The study models were scanned using three different intraoral scanners (iTero, Cadent; Trios, 3Shape; and True Definition, 3M ESPE) and a dental lab scanner
(D250, 3Shape). For each study model, 10 scans were performed per scanner
to produce repeated measurements for the calculation of precision
. The distance and angulation between the respective scanbodies were measured. The results of each scanning system were compared using analysis of variance, and post hoc Tukey test was conducted for a pairwise comparison of scanning devices.RESULTS:
values of the scanbodies varied according to the distance between the scanbodies and the scanning device. A distance of a single tooth space and a jaw-traversing distance between scanbodies produced significantly different results for distance and angle measurements between the scanning systems (P < .05).CONCLUSION:
of intraoral scanners and the dental lab scanner
was significantly different. The precision
of intraoralscanners decreased with an increasing distance between the scanbodies, whereas the precision
of the dental lab scanner
was independent of the distance between the scanbodies.