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Efficacy and Accuracy of Maxillary Arch Expansion with Clear Aligner Treatment

Author

Listed:
  • Gabriella Galluccio

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Adriana A. De Stefano

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Martina Horodynski

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Alessandra Impellizzeri

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Rosanna Guarnieri

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Ersilia Barbato

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Stefano Di Carlo

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

  • Francesca De Angelis

    (Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy)

Abstract

The aim of this work was to evaluate the efficacy and accuracy of maxillary arch transverse expansion using the Invisalign ® clear aligner system without auxiliaries other than Invisalign attachments. Knowing the accuracy of a movement through a clear aligner system allows the clinician to plan the treatment with greater precision and to achieve the expected result faster. The study group included 28 patients with a mean age of 17 ± 3.2 years. The treatment protocol for all the selected patients included the application of the Invisalign ® clear aligner system without auxiliaries, except for the Invisalign ® attachments; in no case were tooth extraction or interproximal enamel reduction (IPR) performed. Linear measurements of the expansion were assessed before treatment (T0), at the end of treatment (T1), and on final virtual models by ClinCheck ® (TC). A paired t -test was used to compare T0-T1 and T1-TC differences. A paired t -test was applied, and one normality was validated with the Shapiro–Wilks test. If normality was not met, the nonparametric test (Mann–Whitney U test) was applied. The level of significance was set at 5%. Statistically significant differences were found for all measurements at T0-T1. The results showed an average accuracy of efficacy of 70.88%. The differences in predictability between the various vestibular measurements (intercanine, inter-premolar, and intermolar) were not statistically significant, while they were for gingival measurements. The overall accuracy of the expansion treatment was 70%, regardless of tooth type.

Suggested Citation

  • Gabriella Galluccio & Adriana A. De Stefano & Martina Horodynski & Alessandra Impellizzeri & Rosanna Guarnieri & Ersilia Barbato & Stefano Di Carlo & Francesca De Angelis, 2023. "Efficacy and Accuracy of Maxillary Arch Expansion with Clear Aligner Treatment," IJERPH, MDPI, vol. 20(5), pages 1-9, March.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:5:p:4634-:d:1088763
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    References listed on IDEAS

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    1. Alessandra Impellizzeri & Martina Horodynski & Adriana De Stefano & Gaspare Palaia & Antonella Polimeni & Umberto Romeo & Elisabeth Guercio-Monaco & Gabriella Galluccio, 2020. "CBCT and Intra-Oral Scanner: The Advantages of 3D Technologies in Orthodontic Treatment," IJERPH, MDPI, vol. 17(24), pages 1-15, December.
    2. Alessandra Putrino & Ersilia Barbato & Gabriella Galluccio, 2021. "Clear Aligners: Between Evolution and Efficiency—A Scoping Review," IJERPH, MDPI, vol. 18(6), pages 1-19, March.
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