Prescription reliability of maxillary tooth movements by an orthodontic clear aligner system in children: a preliminary retrospective study

Background: The Dio Ortho navi clear aligner system was recently introduced to the market. This study aimed to confirm the reliability of the Dio Ortho navi clear aligner system by assessing the consistency between actual and predicted orthodontic tooth movements. Methods: Mixed-dentition and permanent-dentition patients were included. Sequential individualized orthodontic tooth movements were prescribed and recorded as digital images. Intraoral scans were performed at the corresponding observation periods: before treatment (T0), after 20 weeks (T1), and at the end of treatment (T2). Linear measurements were made, including changes in the arch width, tooth position of the maxillary permanent first incisors and permanent first molars, and torque of the maxillary permanent first incisors. Discrepancies between predicted and observed results were calculated. Superimposition between the predicted and achieved dental arches was performed, and the root mean square (RMS) values for the entire tooth surfaces were calculated at T2. Results: No significant differences in the linear discrepancies were observed between two groups (p > 0.05), except for intermolar width changes at T1 and torque changes. Most tooth position discrepancies ranged within 0.5 mm. The mean RMS values were 0.77 ± 0.20 mm in the mixed-dentition group and 0.92 ± 0.29 mm in the permanent-dentition group with no significant differences (p > 0.05). Conclusions: Within the limits of this study, no significant differences in the reliability of orthodontic tooth movement were observed between patients with mixed and permanent dentition. This finding suggests that the Dio Ortho navi clear aligner can be a reliable treatment option for clear orthodontic aligners.

Children; Clear orthodontic aligner; Digital dentistry; Orthodontic appliance; Reliability

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