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Predictability of Maxillary Molar Distalization and Derotation with Clear Aligners: A Prospective Study

Author

Listed:
  • Vincenzo D’Antò

    (School of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Via Pansini, 5, 80131 Naples, Italy)

  • Rosa Valletta

    (School of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Via Pansini, 5, 80131 Naples, Italy)

  • Roberto Ferretti

    (School of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Via Pansini, 5, 80131 Naples, Italy)

  • Rosaria Bucci

    (School of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Via Pansini, 5, 80131 Naples, Italy)

  • Robertas Kirlis

    (Private Practice VIC Clinic, 03162 Vilnius, Lithuania)

  • Roberto Rongo

    (School of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples Federico II, Via Pansini, 5, 80131 Naples, Italy)

Abstract

Clear aligners are employed daily for the treatment of Class II malocclusions, when a valid option involves distalization and derotation of the upper first and second molars. Evidence regarding the predictability of these movements is slight, and the treatment outcome that clinicians plan may not be achieved. Therefore, the purpose of this study is to assess the accuracy of distalization and derotation with clear aligners. Geomagic Control X, a 3D quality control software, was used to superimpose digital models of the pre-treatment, post-treatment, and virtual plan (ideal post-treatment) measurements of 16 patients (4 M, 12 F; mean age 25.7 ± 8.8 years). Linear and angular measurement tools were used to calculate the amount of tooth movement prescribed and achieved. Distal displacement of the buccal cusps had an overall accuracy of 69% for the first molar and 75% for the second molar. The accuracy of molar derotation was higher for the first molar (77.5%) than for the second molar (62.7%). The aligners were not able to achieve 100% of the ideal post-treatment result; thus, planning of refinements is often needed. However, clear aligners can be regarded as a valuable option for the distalization of first and second molars.

Suggested Citation

  • Vincenzo D’Antò & Rosa Valletta & Roberto Ferretti & Rosaria Bucci & Robertas Kirlis & Roberto Rongo, 2023. "Predictability of Maxillary Molar Distalization and Derotation with Clear Aligners: A Prospective Study," IJERPH, MDPI, vol. 20(4), pages 1-11, February.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:4:p:2941-:d:1061424
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