Factors related to stability following the surgical correction of skeletal open bite.

Objectives: If a skeletal anterior open bite malocclusion is treated by orthognathic surgery directed only at the mandible, the lower jaw is repositioned upward in a counter-clockwise rotation. However, this procedure has a high risk of relapse. In the present study, the key factors associated with post-surgical stability of corrected skeletal anterior open bite malocclusions were investigated.

Changes in the lip-line in asymmetrical cases treated with isolated mandibular surgery.

Objective: The aim of this study was to investigate changes in the lip-line in asymmetrical cases treated with mandibular osteotomy alone.

Design: Retrospective study.

Setting: Hiroshima University Institute of Biomedical & Health Sciences, Hiroshima, Japan

Methods: The subjects in this study consisted of 30 patients with an altered lip-line inclination who underwent isolated mandibular osteotomy (bilateral or unilateral sagittal split ramus osteotomy or intraoral vertical ramus osteotomy) as part of their surgical correction.

Enhanced increase in pharyngeal airway size in Japanese class II children following a 1-year treatment with an activator appliance.

Objective: The aim of this study was to assess the upper airway soft-tissue structures in Class IIJapanese children following activator treatment by means of cephalometric analysis.

Study Design: A lateral cephalometric radiograph was taken of each patient at Ti (prior to the placement of the activator; mean age: 11 years, 5 months) and T2 (after 1 year of activator treatment; mean age: 12 years, 5 months). Tracings of the lateral cephalometric radiographs were made on acetate paper, and several soft-tissue points and contours of the tongue, soft palate, hyoid, and pharynx were digitised.

Short-term change in occlusal function after using mandibular advancement appliance for snoring: a pilot study.

The main aim was to evaluate the influence on occlusal contact area (OCA), maximum bite force (MBF), center of occlusal load (COL), and tooth pain after the nocturnal use of different mandibular advance appliances (MAAs) for snoring. Subjects were consisted of ten adult volunteers with mild snoring in Hiroshima University Hospital. Recordings of occlusal function were performed six times for two hours, that is, immediately and 5, 15, 30, 60, and 120 minutes after the nocturnal use of MAA.

Changes in stomatognathic function induced by orthognathic surgery in patients with mandibular prognathism.

Purpose: This study was designed to investigate the changes in stomatognathic function through orthognathic treatment in patients with mandibular prognathism.

Patients And Methods: Thirty-six patients with mandibular prognathism were tested and compared with 30 healthy controls with normal occlusion. For each subject, the occlusal contact area and occlusal force were measured during maximum voluntary clenching (MVC).