Outcome measures
piezocision
SECONDARY
The primary outcome measure was the overall alignment time (OAT) required to complete anterior alignment of the maxillary dental arch. Follow-up of this trial was considered finished when the LII was less than 1 mm (Fig. Pre and post treatment control caseThe secondary outcome measure was the accuracy of the new surgical guide which assessed by detecting the 3D deviation of the piezocisions. The preoperative (piezocision planning) and postoperative (achieved piezocision position) CBCT scans were performed with the same parameters, then overlapping by a specific algorithm, which allowed the comparison of the virtually planned and the actual piezocision positions, was applied in order to assess the values of deviation (Fig. Automated overlapping by the software