Impact of Maximum Tongue Pressure in Patients with Jaw Deformities Who Underwent Orthognathic Surgery.

Koichi Koizumi,Ryo Kunimatsu,Mirai Higaki,Hideki Shiba,Shigeaki Toratani,Kazuhiro Tsuga,Kotaro Tanimoto,Yukio Yoshioka,Tomoaki Shintani,Yuki Yoshimi

doi:10.3390/diagnostics12020404

Koichi Koizumi, Ryo Kunimatsu + Show 8 more

Open Access

https://doi.org/10.3390/diagnostics12020404

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Journal: Diagnostics	Publication Date: Feb 4, 2022
Citations: 4	License type: CC BY 4.0

Affiliation: Hiroshima University, Hiroshima University Hospital

Abstract

Malocclusion and morphological abnormalities of the jawbone often affect the stomatognathic function and long-term postoperative stability in patients with jaw deformities. There are few reports on the effect of maximum tongue pressure (MTP) in these patients. We investigated the relationship between the MTP and jawbone morphology and the effect of the MTP on surgery in 42 patients with jaw deformity who underwent surgical orthodontic treatment at Hiroshima University Hospital. The MTP was measured using a tongue pressure measurement device; the average value was considered as the MTP. Based on the MTP measured before surgery, patients were classified into the high- or the low-MTP group. The clinical findings and results of the cephalometric analysis were compared. Posterior movement of the mandible in the high-MTP group was significantly lower than that in the low-MTP group. The ANB angle, overjet, and overbite in the high-MTP group were significantly smaller than those in the low-MTP group. On the other hand, there was no difference between the two groups in the measured values, indicating a labial inclination of the anterior teeth (U1 to SN, U1 to FH, IMPA, and FMIA). MTP has been suggested to affect mandibular prognathism in patients with jaw deformities.

Highlights

There are reports of decreased tongue pressure associated with oral hypoAlthough there are reports of decreased tongue pressure associated with oral hypofuncfunction in older adults, there are few reports on tongue pressure in young people, espetion in older adults, there are few reports on tongue pressure in young people, especially cially those with jaw deformities who have undergone surgical orthodontic treatment those with deformities whothe have undergonebetween surgicalMTP
We demonstrated that overjet and overbite were significantly less in the high-maximum tongue pressure (MTP) group than in the low-MTP group
We found no difference between the two groups in the measured values, indicating a labial inclination of the anterior teeth (U1 to SN, U1 to FH, IMPA, and FMIA)

Summary

Introduction

In addition to malocclusion and morphological abnormalities of the jawbone, patients with jaw deformities often show stomatognathic function [1,2,3]. In some cases, relapse is observed after surgical orthodontic treatment [4]. The causes of relapse include postoperative changes in the running of the masticatory muscles, the effects of soft tissues around the oral cavity, such as the lips and tongue, unstable occlusions, inadequate postoperative orthodontic treatment, and tongue protrusion habits [5].

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