STATEMENT OF THE PROBLEM Insufficient information about the anatomical positions and structure of mandibular canal provokes unwanted damage to this important structure of mandible. PURPOSE The aim of this study was to determine the visibility and anatomical variations of mandibular canal in digital panoramic radiographs of dentulous and edentulous patients in a sample of Iranian population. ...

Study Design A descriptive experimental study. Purpose The purpose of this study was to describe the reliability and accuracy of palpable anterior neck landmarks (angle of the mandible, hyoid bone, thyroid cartilage, and cricoid cartilage) for the identification of cervical spinal levels in a slight neck-extended position as in anterior approach cervical spinal surgery. Overview of Literatu...

Developing animals must resolve the conflicting demands of survival and growth, ensuring that they can function as infants or juveniles while developing toward their adult form. In the case of the mammalian skull, the cranium and mandible must maintain functional integrity to meet the feeding needs of a juvenile even as the relationship between parts must change to meet the demands imposed on a...

Background: Odontogenic myxoma is a rare slow growing, benign, locally aggressive tumor of ectomesenchymal origin with or without odontogenic epithelium, comprising 3% to 6% of all odontogenic tumors. It appears to originate from dental papilla, follicle, or periodontal ligament in mandible and less commonly the maxilla. These usually present in second or third decades with marked female predil...

OBJECTIVE To provide anatomical information on the position, morphological variations and incidence of mental foramen (MF) and accessory mental foramen (AMF) as they are important for dental surgeons, anesthetists in nerve block and surgical procedures, to avoid injury to the neurovascular bundle in the mental foramen area. METHODS Our study was conducted on 150 adult dry human mandibles from...

BACKGROUND The use of rest surface EMG of jaw elevator muscles is still debated. The low voltage recorded in anterior temporalis muscle by electromyography (EMG) in rest position could be affected by electronic noise or by activity coming from other muscles. Our goal was to evaluate the physiological behaviour of the anterior temporalis by surface EMG at rest mandible position during open or cl...

There have been studies that investigated mandibular movements and positioning during swallowing, but the results were inconsistent, and still the exact position of the condyles during swallowing is unknown. The purpose of this investigation was to study the kinematics of the mandible and the condyles, and to determine the actual movement paths and position of mandible and condyles during the p...

BACKGROUNDS The main problem with intraoral distraction of the mandible is the inability to achieve the three-dimensional mandibular correction as planned preoperatively. We developed a technique that allows spontaneous changes in the direction of mandibular elongation using an intraoral distractor. METHODS After mandibular osteotomy, the distractor is fixed to the distal segment of the mandi...

Context Obstructive sleep apnoea (OSA) is a sleep-related breathing disorder, characterised by (intense) snoring and recurrent obstructions of the upper airway during sleep. Among other things, OSA is associated with cardiovascular complications and increased mortality. Oral appliances that move the mandible into a more anterior position, commonly known as mandibular advancement devices (MAD), ...

in this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. first, the numerical results were validated by the results of experimental test performed by an instron 8802 servo hydraulic machine. also, the effect of cutout angle (θ), cutout size, cutout position (l0/l) and cutout aspect ratios (b/a...