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Evaluation of the palatal split pattern in surgically rapid maxillary expansion—comparison of two techniques

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Abstract

Purpose

Surgically assisted rapid maxillary expansion is performed to correct transverse deficiencies of the maxilla, and it is indicated in specific clinical situations. The literature presents different opinions in several aspects, mainly regarding the effect of disjunction of the pterygoid plates. The aim of this study was to evaluate the pattern of maxillary expansion obtained with two surgical techniques, with and without disjunction of the pterygoid plates.

Methods

Twenty patients treated with surgically assisted rapid maxillary expansion for correction of transversal discrepancies were included in this retrospective study and divided into two groups: (G1) patients operated without disjunction of pterygoid plates and (G2) patients treated with release of the pterygoid plates.

Results

There were seven male and 13 female patients, and the mean age was 29.9 years. Cone beam computed tomography images obtained after final activation of the expansion device were evaluated and complete disjunction of the midpalatal suture (type I) was present in 75 % of the patients whereas incomplete disjunction of the midpalatal suture (type II) was observed in 25 %. Chi-square test showed no statistically significant difference between groups (p = 0.606).

Conclusion

No difference was found in relation to the maxillary disjunction pattern irrespective of the treatment given to pterygoid plates.

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Authors and Affiliations

  1. Division of Oral and Maxillofacial Surgery, Department of Diagnosis and Surgery, Dental School at Araraquara – Unesp, Rua: Humaitá, 1680, Araraquara, SP, 14801-903, Brazil

    Lucas Borin Moura, Marcelo da Silva Monnazzi, Marisa Aparecida Cabrini Gabrielli & Valfrido Antonio Pereira-Filho

  2. Section of Oral Radiology, Department of Dentistry, Faculty of Health, Aarhus University, Aarhus, Denmark

    Rubens Spin-Neto

  3. Department of Oral and Maxillofacial Surgery and Periodonthology, Dental School at Ribeirão Preto–USP, Ribeirão Preto, SP, Brazil

    Cássio Edvard Sverzut & Alexandre Elias Trivellato

Authors
  1. Lucas Borin Moura
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  2. Rubens Spin-Neto
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  3. Cássio Edvard Sverzut
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  4. Marcelo da Silva Monnazzi
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  5. Alexandre Elias Trivellato
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  6. Marisa Aparecida Cabrini Gabrielli
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  7. Valfrido Antonio Pereira-Filho
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Correspondence to Lucas Borin Moura.

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Moura, L.B., Spin-Neto, R., Sverzut, C.E. et al. Evaluation of the palatal split pattern in surgically rapid maxillary expansion—comparison of two techniques. Oral Maxillofac Surg 20, 255–258 (2016). https://doi.org/10.1007/s10006-016-0562-5

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  • DOI: https://doi.org/10.1007/s10006-016-0562-5

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