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Home Analysis of maxillary arch expansion in growing patients treated with early Class...

Analysis of maxillary arch expansion in growing patients treated with early Class III protocol versus RME

Authors:

  • F. d'Apuzzo
    DDS, MS, PhD, Research fellow,Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
  • L. Nucci
    DDS, PhD student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
  • A. Correra
    DDS, Postgraduate student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
  • G. Minervini
    DDS, MS, PhD student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
  • V. Quinzi
    DDS, MS, PhD, Assistant Professor, Department of Life, Health and Environmental Sciences, University of L’Aquila, Italy
  • G. Marzo
    DDS, MS, PhD, Full Professor, Director of the Postgraduate Orthodontic Program, Department of Life, Health and Environmental Sciences, University of L’Aquila, Italy
  • L. Franchi
    DDS, MS, PhD, Associate Professor, Dean of the School of Dentistry, Director of the Postgraduate Orthodontic Program, Department of Experimental and Clinical Medicine, University of Florence, Italy
  • V. Grassia
    DDS, MS, PhD, Assistant Professor, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy.

DOI:

https://doi.org/10.23804/ejpd.2023.1881

ABSTRACT


Aim

To evaluate and compare the maxillary arch expansion obtained in growing patients treated with Class III early treatment protocol (the modified SEC III protocol), or rapid maxillary expansion (RME).

Methods

This retrospective observational study included patients in the mixed dentition with maxillary constriction and/or dental crowding. The first group consisted of 30 patients (11 males and 19 females, mean age 9.4 ±1.7 years) with dentoskeletal Class III malocclusion treated with the modified SEC III protocol. The second group of 30 patients (14 males and 16 females, mean age 9.3 ±1.5 years) with Class I or II malocclusion was treated with a Hyrax-type expander applied to bands on the first upper molars. For each subject, initial (T0) and post expansion (T1) digital dental casts were collected. The intermolar and intercanine widths, the arch lengths at both cusp and gingival levels, the anteroposterior length and the palatal depth were measured at T0 and T1.

Results

At T1 there were statistically significant differences for 3-3 occlusal (OC) (P < 0.009), arch-length OC (P <0.030), anteroposterior arch-length (AP) (P <0.003), Depth (P <0.030) and Ap (P <0.000). No statistically significant T0-T1 changes were found between the modified SEC III and Hyrax groups except for Depth (P <0.011) with a mean difference of 2.3 mm between the two groups.

Conclusion

Both bonded and banded expanders, used in the modified SEC III protocol and RME treatment respectively, produced similar changes in the upper arch. The different initial dentoskeletal malocclusions of the two sample groups were not relevant to the post-expansion arch changes.

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Publication date:

June /2023

Issue:

Vol.24 – n.2/2023

Page:

133 – 138

Publisher:

Ariesdue

Topic:

Any other topic

Cite:


Harvard: F. d'Apuzzo, L. Nucci, A. Correra, G. Minervini, V. Quinzi, G. Marzo, L. Franchi, V. Grassia (2023) "Analysis of maxillary arch expansion in growing patients treated with early Class III protocol versus RME", European Journal of Paediatric Dentistry, 24(2), pp133-138. doi: 10.23804/ejpd.2023.1881
Vancouver: F. d'Apuzzo, L. Nucci, A. Correra, G. Minervini, V. Quinzi, G. Marzo, L. Franchi, V. Grassia. Analysis of maxillary arch expansion in growing patients treated with early Class III protocol versus RME. European Journal of Paediatric Dentistry [Internet]. 2023Jun.23 [cited 2025Jun.19];24(2):133-138. Available from: https://www.ejpd.eu/abstract-pubmed/analysis-of-maxillary-arch-expansion-in-growing-patients-treated-with-early-class-iii-protocol-versus-rme/
MLA: F. d'Apuzzo, L. Nucci, A. Correra, G. Minervini, V. Quinzi, G. Marzo, L. Franchi, V. Grassia Analysis of maxillary arch expansion in growing patients treated with early Class III protocol versus RME. European Journal of Paediatric Dentistry. 2023;24(2):133-138

Copyright (c) 2021 Ariesdue

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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    Cristina Calchera
    Editor in chief: dott. Luigi Paglia
    European Journal of Paediatric Dentistry © | ISSN (Online): 2035-648X
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