Fractal Perspective on the Rapid Maxillary Expansion Treatment; Evaluation of the Relationship Between Midpalatal Suture Opening and Dental Effects - 21/09/21

Doi : 10.1016/j.jormas.2021.09.002

Ufuk Ok, Assistant Professor ^a,^⁎ , Tugce Unal Kaya, Ph. D. Student ^b
^a Department of Orthodontics, Faculty of Dentistry, Istanbul Gelisim University, Istanbul, Turkey
^b Department of Orthodontics, Faculty of Dentistry, Istanbul Aydin University, Istanbul, Turkey

^⁎Corresponding author at:Department of Orthodontics, Faculty of Dentistry, Istanbul Gelisim University, Avcilar, 34310, Istanbul, Turkey.Department of OrthodonticsFaculty of DentistryIstanbul Gelisim University, AvcilarIstanbul34310Turkey

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Abstract

Objective

This retrospective study investigates the relationship between the midpalatal suture opening and the dental effects of Rapid Maxillary Expansion (RME) treatment using fractal analysis.

Methods

The participants of this study were selected from the patients who underwent Cone Beam Computed Tomography(CBCT) scans in 2019 and were treated with banded type Maxillary Expander. This study included 20 participants (with a mean age of 10.64±10.64, ranging from 8 to 13 years): 12 males and 8 females. Patients went through CBCT scan and images taken were analyzed using the ImageJ program. The following parameters were measured and analyzed before and after RME treatment: fractal dimensional value of Midpalatal suture(MPS), Distobuccal(DB), Mesiobuccal(MB), Palatal(P), Total distance, Cortical bone and linear values of External maxilla, Internal maxilla, Palatal roots, distance of Central fosses and angular values of Tipping value of 16 and 26. We used Spearman's nonparametric test for non-normal variables to investigate the correlation between changes in MPS and other variables.

Results

The results showed a strong positive correlation between the MPS and Right MB (0.34, p<0.05) and Left MB (0.59, p<0.05) variables and a strong negative correlation between the MPS and the External maxillary variables (-0.53, p<0.05).

Conclusion

The results of the study have shown a strong correlation between right and left MB and External Maxilla. RME caused a reduction in buccal alveolar bone thickness and a slight reduction in MPS thickness in growing patients. Therefore, we suggest that fractal analysis can be used to evaluate the skeletal and dental effects of RME in patients.

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Keywords : Bone density, Rapid maxillary expansion, Fractal analysis, Midpalatal suture

Plan

Introduction

Methods and materials

Patient selection, evaluation of alveolar bone and midpalatal suture thickness

Fractal calculation for alveolar bone and midpalatal suture thickness

Statistically analyses

Conflict of interest: No conflict of interest for all authors.
Authors’ contributions: None
All authors read and approved the submitted version.
Ethics approval and consent to participate: Approved by Istanbul Aydin University ethic committee with the number 2020/315.
Competing interests: The author declare that they have no competing interests
Availability of Data and Materials: The data that support the findings of this study are available from the corresponding author upon reasonable request from dtufukok@hotmail.com.
Funding's: No funding sources were used.