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

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.

Is Incisor Compensation Related to Skeletal Discrepancies in Skeletal Class III? A Retrospective Cephalometric Study

“…This study was a sagittal cephalometric investigation that did not include model measurement data, vertical cephalometric measurements, or soft tissue function factors that report the relationships relative to incisor inclination. Further research could focus on these factors: extent of crowding [35], level of dental malocclusion [36], morphology of the dental arch [37], vertical facial morphology [38], presence of open bite [39], occlusal plane angle [40], deviation [41], lip pressure [42], and tongue pressure [43]. Further studies for a better understanding of incisor compensation should include these factors.…”

Skin Symptoms That Appeared after Fixation with a Titanium Plate in a Jaw Deformity Patient Suffering from Palmoplantar Pustulosis: A Case Report

“…Preoperative panoramic X-rays and intraoral photographs are shown (Figure 1A,B). The preoperative vital signs were blood pressure 140/78 mmHg, body temperature 37.4 Le Fort I osteotomy and a Wassmund maxillary alveolar osteotomy were performed on the maxilla, and a sagittal split ramus osteotomy was carried out on the mandible under general anesthesia [8]. Titanium miniplates were used for maxillary bone fixation, whereas 2.0 mm locking plates and corresponding screws were used for mandibular bone fixation (Figure 1C).…”

“…In addition to malocclusion and jawbone morphologic abnormalities, patients with jaw deformities often exhibit jaw function that requires surgical orthodontic treatment [8]. The surgery is generally performed after the age of 17 to 18, when the growth and development of the jawbone is completed, and is considered to be appropriate until the age of 25.…”