OBJECTIVES The aim of this study is to evaluate the position of impacted third molars based on the classifications of Pell & Gregory and Winter in a sample of Iranian patients. STUDY DESIGN In this retrospective study, up to 1020 orthopantomograms (OPG) of the patients who were referred to the radiology clinics from October 2007 to January 2011 were evaluated. Data including the age, gender, ...

STUDY DESIGN Retrospective review of prospectively collected data. SUMMARY OF BACKGROUND DATA Vertebral artery injuries (VAI) occur commonly after cervical spine trauma. No study has yet examined the association between VAI and specific variants of C2 fractures. OBJECTIVE To evaluate the incidence of VAI (as defined by magnetic resonance imaging/angiography [MRI/A]) in subtypes of C2 fractu...

OBJECTIVE: To determine the correlation between molars angulation, overbite and vertical skeletal pattern. METHODS: This descriptive cross-sectional study was conducted from June to August 2019. Pretreatment records (lateral cephalograms dental models) of 81 individuals were selected database Orthodontics Department. Overbite measured casts with a ruler values recorded in both millimeter readin...

When endovascular treatment is performed, angulation of the access route for a device can make the operative procedure difficult. We encountered a case in which we successfully completed thoracic endovascular aortic repair (TEVAR) in a patient with severely angulated aorta by applying 'double-wire technique'. The patient was an 80-year-old woman. An aneurysm with a 71-mm diameter was observed i...

OBJECTIVE To evaluate the effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength (SBS) and bond failure mode of metallic orthodontic brackets. METHODS Adhesive pre-coated metallic brackets were bonded to 72 extracted human premolars embedded in autopolymerizing acrylic resin. The teeth were randomly divided into 3 groups (n = 24 each) to undergo...

This research aimed to reduce the friction between the wire and brackets by Er:YAG laser. To measure the friction between the wires and brackets in 0° and 10° of wire angulations, 40 polycrystalline ceramic brackets (Hubit, South Korea) were divided into 8 study groups and irradiated by 100, 200, and 300 mj/s of Er:YAG laser power. Two groups of brackets were not irradiated. The friction betwee...

Method Between April 2006 March 2015, 24 patients (22 male : 2 female; Age 15 33 years) presented to our institute with symptomatic Pectus Excavatum. All presented with symptoms of dyspnoea /fatigue/dysphagia. All patients underwent Prospective evaluation of exercise and anatomical characteristics by: Spirometry; Cardiopulmonary exercise tolerance (CPEX) testing & Non-contrast axial/ sagittal C...

OBJECTIVE This study aimed to compare the frictional force (FR) in self-ligating brackets among different bracket-archwire angles, bracket materials, and archwire types. METHODS Passive and active metal self-ligating brackets and active ceramic self-ligating brackets were included as experimental groups, while conventional twin metal brackets served as a control group. All brackets were maxil...

R Mian, C Scilley. Factors affecting the emergency room treatment of boxer’s fractures. Can J Plast Surg 1996;4(2):99-100. There is considerable controversy over the point at which boxer’s fractures need to be reduced. This study characterizes the features of fractures that prompted reduction. A retrospective review of 57 consecutive patients with 57 boxer’s fractures presenting to the emergenc...