Evaluation of pharyngeal airway space changes after bimaxillary orthognathic surgery with a 3-dimensional simulation and modeling program.

Introduction: The aims of this study were to use 3-dimensional simulation and modeling programs to evaluate the effects of bimaxillary orthognathic surgical correction of Class III malocclusions on pharyngeal airway space volume, and to compare them with the changes in obstructive sleep apnea measurements from polysomnography.

Methods: Twenty-five male patients (mean age, 21.6 years) with mandibular prognathism were treated with bilateral sagittal split osteotomy and LeFort I advancement.

Measurement accuracy of a computer-assisted three-dimensional analysis and a conventional two-dimensional method.

Objective: To determine the differences between manual and cephalometric measurements on different sections of the human skull, which were obtained using computer-assisted three-dimensional (3D) analysis and conventional two-dimensional (2D) techniques.

Materials And Methods: Measurements were carried out on 13 dry human skulls, then 2D cephalograms and 3D computed tomographic (CT) images were obtained. Anatomic landmarks were determined and marked with clay before CT images were taken, and the same landmarks were marked with the help of metallic balls and pins for lateral and frontal cephalograms.

Anterior segmental distraction of the hypoplastic maxilla by a tooth borne device: a study on the movement of the segment.

The aim of this study is to determine the relative movement of the teeth and bone after premaxillary distraction with a tooth-borne device constructed in the authors' centre. To evaluate the effects of this device on the anterior segment and teeth, the space formed between the anterior and posterior segments of the maxilla was measured on computerized tomography images from 10 patients. The average differences were 3.

Effects of hyperbaric oxygen during experimental tooth movement.

Objective: To determine the effects of hyperbaric oxygen (HBO) on bone remodeling during orthodontic tooth movement.

Materials And Methods: Twenty-four male, adult Sprague Dawley rats were randomly divided into two groups. HBO was administered in the first group, and the second group served as a control.

A unique treatment of finger-sucking habit in children with mental retardation: report of 2 cases.

Finger-sucking habit, or nonnutritive sucking, usually ceases spontaneously in childhood. If the habit is not broken, however, not only will dental occlusion be affected, but the shape of the finger may be altered as well. When the habit is broken, the threatening disturbances of digital growth and dental occlusion will resolve spontaneously.

Dynamic MRI evaluation of tongue posture and deglutitive movements in a surgically corrected open bite.

Tongue thrust usually develops in the presence of anterior open bite in order to achieve anterior valve function. In the literature, tongue thrust is described both as the result and the cause of open bite. If it is an adaptation to malocclusion, then tongue posture and deglutitive tongue movements should change after treatment.

Effects of interferon-gamma on bone remodeling during experimental tooth movement.

Objective: To determine the effects of interferon-gamma (IFN-gamma) on bone remodeling during orthodontic tooth movement.

Materials And Methods: Thirty adult male Sprague Dawley rats were randomly categorized into five groups. IFN-gamma was administered in three different doses (0.

Tumor necrosis factor-alpha levels during two different canine distalization techniques.

Objectives: To compare levels of tumor necrosis factor (TNF)-alpha while applying continuous and heavy interrupted forces.

Materials And Methods: A hybrid retractor was used in the first group. In the second group, rapid canine distalization through periodontal distraction was performed.

Use of zygomatic anchors during rapid canine distalization: a preliminary case report.

Rapid canine distalization is a technique involving periodontal ligament distraction. The primary aim of this technique is to distalize the canines without anchorage loss and to shorten the duration of orthodontic treatment. After the rapid canine distalization, the healing process of the periodontal ligament is similar to rapid palatal expansion and requires a consolidation period.

Mandibular distraction with MD-DOS device.

Distraction osteogenesis is an alternative treatment method for the correction of mandibular hypoplasia. In this case report, mandibular distraction with a dynamic osteosynthesis system (MD-DOS) was performed to gradually lengthen the mandible of a patient who had a severe hypoplastic mandible. The patient underwent intraoral bilateral mandibular distraction osteogenesis.

Dentofacial effects of asymmetric headgear and cervical headgear with removable plate on unilateral molar distalization.

Cervical headgear (CHG) is used widely in the treatment of Class II anomalies. Asymmetric headgear (AHG) is an alternative treatment for the correction of unilateral Class II dental relationships. The purpose of this investigation was to compare the effects of AHG with those of a CHG combined with a removable plate in unilateral first molar distalization.

Premaxillary distraction osteogenesis with an individual tooth-borne appliance.

Distraction osteogenesis defines a technique of bone generation and osteosynthesis by the distraction of native preexisting bone. The technique offers a promising treatment alternative for patients with maxillary hypoplasia and a retrognathic mandible. In this case report, the steps in the treatment of an 18.

Rapid canine distalization using distraction of the periodontal ligament: a preliminary clinical validation of the original technique.

The process of rapid canine distalization through the distraction of the periodontal ligament is similar to the process in the midpalatal suture during rapid palatal expansion. Rapid canine distalization can be achieved in three weeks with this technique. The aim of this research was to evaluate the effects of rapid canine distalization on dentoalveolar tissues during the rapid distalization of canine teeth with semirigid, individual tooth-borne distractors.