BACKGROUND Our objectives are to analyse and to compare the stress distribution and displacement of the craniofacial structures, following the application of forces from quad-helix and Nickel Titanium Palatal Expander-2 (NPE2) using finite element analysis. METHODS Three-dimensional finite element models of young dried human skull, quad-helix appliance and NPE2 were constructed, and the initi...

This study investigated the change in interproximal force (IPF) in mandibular anterior teeth during retention and the relationship between the irregularity index before orthodontic treatment and the IPF. The effect that an erupting third molar had on IPF was also examined. Forty treated patients (40 with extraction of four bicuspids) were followed for 18 months during the retention phase. The i...

We present observations of the formation, propagation and decay of vortexshaped features in coronal images from the Solar Dynamics Observatory (SDO) associated with an eruption starting at about 2:30UT on Apr 8, 2010. The series of vortices formed along the interface between an erupting (dimming) region and the surrounding corona. They ranged in size from several to ten arcseconds, and traveled...

We report exploratory experiments simulating gas-driven eruptions using the C02H20 system at room temperature as an analog of natural eruptive systems. The experimental apparatus consists of a test cell and a large tank. Initially, up to 1.0 wt % of C02 is dissolved in liquid water under a pressure of up to 735 kPa in the test cell. The experiment is initiated by suddenly reducing the pressure ...

Introduction: Odontogenictumours cover a wide and diverse spectrum of tumours. Some odontogenictumours have a varied etiopathogenesis and share a presentation very similar to hybrid odontogenictumours. Ameloblastic fibroodontoma is one such Radhika Manoj Bavle1, Makarla Soumya2, K. Paremala2, Hosthor Sreelatha S.3, M. Sudhakara2, Venugopal Reshma3 Affiliations: 1M.D.S, Professor & Head, Departm...

Aims. Coronal mass ejections or CMEs are large dynamical solar-corona events. The mass balance and kinematics of a fast limb CME, including its prominence progenitor and the associated flare, will be compared with computed magnetic structures to look for their origin and effect. Methods. Multi-wavelength ground-based and spaceborne observations are used to study a fast W-limb CME event of Decem...