Independent review places Carestream Intraoral scanner as ‘top dog’ again
In the present in vitro study, we have compared the trueness and precision of four latest generation IOS (CS3600®, Trios3®, Omnicam®, TrueDefinition®) in two different situations (in a PEM with three implants and in a FEM with six implants, respectively). Excellent results in terms of trueness and precision were achieved with all IOS, scanning the two different models. However, important findings have emerged from our present work. First, significant differences in trueness were found among different IOS: this may have important clinical implications. Since in digital dentistry modeling and milling depend essentially on the data acquired through the optical impression, the use of the most accurate IOS would seem preferable, in order to improve the quality of fit and marginal adaptation of the implant-supported prosthetic restorations. In our present study, CS 3600® gave the best trueness results, therefore it should be preferable to use it in similar clinical settings. Second, the scanning accuracy was higher in the PEM than in the FEM. This indicates that, despite the considerable progress made by the latest generation IOS, scanning a fully edentulous patient remains more difficult than to scan an area of more limited extent, and consequently the design and milling of full-arch restorations on the basis of these scanning data may still present problems. Third, no statistically significant differences were found in the precision, among the four different IOS; however, Trios 3® performed better in the transition from the partially to the fully edentulous model.