## 3 Results
reported that the digital scanner and digital impression technique used could influence the accuracy of the measurement procedure. For this purpose, the 3 Shape D800 digital scanner showed the highest truth values in full arch digital impressions, followed by the CEREC Bluecam digital scanner, while the Carestream 3500 digital scanner showed the highest accuracy results in full arch digital impressions, which was followed by the CEREC Bluecam digital scanner. However, the best compromise between working time and accuracy was provided with the 3 Shape TRIOS digital scanner [33]. [PERSON] et al. reported the Carestream CS 3500 digital scanner to have the lowest accuracy and truth results in full arch digital impressions and also reported a significantly higher working time compared to the CEREC Omnicam digital scanner and TRIOS color digital scanner [34]. In addition, [PERSON] et al. analyzed the accuracy of eight intraoral digital scanners, comparing partial-arch and full-arch digital impressions by aligning the STL digital files and measuring the differences between the normal factors of the Tessella network. The authors reported statistically significant differences (\(p<0.05\)) between the truth values of the partial-arch and total-arch digital impressions with the total-arch digital impressions found to be less accurate than the partial-arch digital impressions [35]. Therefore, in the present study, the teeth were individually segmented and re-aligned. Moreover, [PERSON] et al. reported that digital impressions are more accurate than conventional alginate impressions, suggesting a promising future for digital impressions in orthodontics [36]. It was also noted that the accuracy of the STL digital files obtained from intraoral scanners is significantly better (\(p<0.05\)) in powder-dependent scanners than non-powder-dependent scanners because translucency produces few errors in the images [37]. Therefore, in the present study, we used a power-dependent intraoral scanner. Several factors can affect the accuracy of a digital scanner, and these drawbacks can be carried over to the STL digital file, thereby increasing the cumulative error rate caused by each alignment procedure, making it essential to avoid measurement errors in segmenting and re-alignment procedures. Moreover, the density of the Tessella network provided by the digital scan device can influence the accuracy of the measurement procedure. Therefore, it is important to previously analyze the characteristics of the digital scan device before using the device to make a digital impression. A fixed lingual multibracket appliance was selected due to the relevance of cement remaining on the lingual surfaces of teeth and the difficulties related to the bonding, debonding, and polishing procedures associated with lingual orthodontics. The chosen ad hesion technique for fixed lingual multibracket appliances is considered very important in orthodontics. However, completely removing the remaining cement is still a challenge [38], especially when the visual detection of remaining cement is compromised, increasing the probability of cement remaining on the tooth and/or excessive enamel loss. In response, the morphometric technology was shown to be a repeatable and reproducible measurement technique to accurately analyze the capability to remove the remaining enamel after fixed multibracket appliance therapy debonding, thereby improving the techniques and materials actually employed to remove the remaining cement without damaging the enamel surface.