Effects of mini-implant assisted rapid palatal expansion on the deviated nasal septum and inferior nasal meatus: A CBCT study

Sim, Ho-Yeon; Ha, Nu-Ri; Choi, Sung-Kwon; Kang, Kyung-Hwa

doi:2023.61.2.96

J Korean Dent Assoc > Volume 61(2); 2023 > Article

ORIGINAL ARTICLE

Journal of Korean Dental Association 2023;61(2):96-111.
DOI: https://doi.org/10.22974/jkda.2023.61.2.001 Published online January 31, 2023.

미니 임플란트 지지형 급속 구개 확장이 만곡된 비중격 및 하비도에 미치는 영향 : CBCT 연구

심호연

, 하누리

, 최성권

, 강경화

원광대학교 치과대학 치과교정학교실

Effects of mini-implant assisted rapid palatal expansion on the deviated nasal septum and inferior nasal meatus: A CBCT study

Ho-Yeon Sim

, Nu-Ri Ha

, Sung-Kwon Choi

, Kyung-Hwa Kang

Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea

Correspondence: Kyung-Hwa Kang, Tel: +82-63-859-2962, Fax: +82-303-3440-2962,
Email: pigtail@wku.ac.kr

Received: 5 October 2022 • Revised: 13 October 2022 • Accepted: 20 December 2022

Abstract

Objective
The purpose of this study was to evaluate the effects of the mini-implant assisted rapid palatal expansion on the nasal septum and the inferior nasal meatus (INM) in the patients with nasal septal deviation.
Methods
The CBCT images were taken before (T0), after (T1), and more than 5 months after (T2) MARPE in 17 patients who had NSD. According to the direction of the NSD, the concave side was set as group 1 and the convex side was set as group 2 by patient. The volume of the INM, nasal septal tortuosity ratio were calculated. Also, to evaluate 3-dimensional changes of the nasal septum, distance between C point (The junction of perpendicular plate of ethmoid bone and vomer) and three vertical planes were calculated. And distance between C point and lateral wall of nasal cavity was measured.
Results
The total volume of the INM increased significantly after MARPE (p < 0.001). The distance from the C point to the vertical plane increased significantly after MARPE (p < 0.01). Also, there was a significant difference between the groups in the distance between the C point and the lateral wall of nasal cavity (p < 0.001) before and after treatment. But there was no significant difference in the increase ratio.
Conclusion
After MARPE, the volume of INM was significantly increased. The nasal septum was more displaced to the deviated side without a significant morphological change. But the increase ratio of both group was similar.

Key Words: Nasal septal deviation (NSD); Mini-implant assisted rapid palatal expansion (MARPE); Inferior nasal meatus (INM); Cone-beam computed tomography (CBCT)