[Effect of maxillary expansion combined with orofacial myofunctional therapy on the position of the tongue of children with mouth breathing]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2023 Aug;37(8):648-651. doi: 10.13201/j.issn.2096-7993.2023.08.009.
[Article in Chinese]

Abstract
in English, Chinese

Objective:This study aimed to investigate the change of the position of the tongue before and after combined treatment of maxillary expansion and orofacial myofunctional therapy in children with mouth-breathing and skeletal class Ⅱmalocclusion. Methods:A total of 30 children with skeletal class Ⅱ malocclusion and unobstructed upper airway were selected. The 30 children were divided into mouth-breathing group（n=15） and nasal-breathing group（n=15） and CBCT was taken. The images were measured by Invivo5 software. The measurement results of the tongue position of the two groups were analyzed by independent samples t-test. 15 mouth-breathing children with skeletal class Ⅱ malocclusion were selected for maxillary expansion and orofacial myofunctional therapy. CBCT was taken before and after treatment, the measurements were analyzed by paired sample t test with SPSS 27.0 software package. Results:The measurement of the tongue position of the mouth-breathing and nasal-breathing groups were compared, the differences were statistically significant（P<0.05）. The measurement of the tongue position showed significant difference after the combined treatment of maxillary expansion and orofacial myofunctional therapy in children with mouth-breathing and skeletal class Ⅱmalocclusion（P<0.05）. Conclusion:Skeletal class Ⅱ malocclusion children with mouth-breathing have low tongue posture. The combined treatment of maxillary expansion and orofacial myofunctional therapy can change the position of the tongue.

目的：研究骨性Ⅱ类错牙合伴口呼吸患儿行上颌扩弓联合口面肌功能训练后舌体位置的变化。 方法：选取30例上气道通畅的骨性Ⅱ类错牙合畸形患儿，根据呼吸方式分为口呼吸组（15例）和鼻呼吸组（15例），分别拍摄鼻呼吸组治疗前锥形束CT（cone-beam CT，CBCT）、口呼吸组上颌扩弓联合口面肌功能治疗前、后的CBCT，使用Invivo5软件对舌体位置进行测量。采用SPSS 27.0软件对鼻呼吸组和口呼吸组数据进行独立样本t检验。对口呼吸组治疗前、后数据进行配对样本t检验。 结果：口呼吸组和鼻呼吸组骨性Ⅱ类错牙合患儿，舌体距离上腭的位置存在明显的差异（P<0.05）。口呼吸组通过上颌扩弓联合口面肌功能训练后，舌背与上腭之间的距离减小，治疗前后差异有统计学意义（P<0.05）。 结论：骨性Ⅱ类错牙合伴口呼吸患儿常存在低舌位，通过上颌扩弓联合口面肌功能训练，有助于改善舌体位置。.

Keywords: maxillary expansion; orofacial myofunctional therapy; skeletal class Ⅱ malocclusion; the position of the tongue.

Publication types

  • English Abstract

MeSH terms

  • Child
  • Humans
  • Malocclusion* / therapy
  • Mouth Breathing / therapy
  • Myofunctional Therapy* / methods
  • Palatal Expansion Technique
  • Tongue

Grants and funding

广东省医学科学技术研究基金(No：20201125225840234)；深圳市高校稳定支持计划面上项目(No：20220808170713001)