Reliability of 3D dental and skeletal landmarks on CBCT images.

Objectives: To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error.

Materials And Methods: Three judges located 31 skeletal landmarks and 60 dental landmarks on the pre- and posttreatment CBCT images of 22 patients. Landmark error was determined by calculating the distance of deviation of landmark locations around their average.

Institution of Military Working Dog Physical Profile Record to Clarify Medical Readiness Category Status.

The current medical readiness category (CAT) status system used for military working dogs (MWDs) simply outlines the deployability of an MWD. This system, however, does not detail any other restrictions or the reason for assigning the current CAT status. The question is often raised as to whether the MWD can continue to work and perform everyday duties despite not being a CAT I.

A HIF-LIMD1 negative feedback mechanism mitigates the pro-tumorigenic effects of hypoxia.

The adaptive cellular response to low oxygen tensions is mediated by the hypoxia-inducible factors (HIFs), a family of heterodimeric transcription factors composed of HIF-α and HIF-β subunits. Prolonged HIF expression is a key contributor to cellular transformation, tumorigenesis and metastasis. As such, HIF degradation under hypoxic conditions is an essential homeostatic and tumour-suppressive mechanism.

American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection: Overview of a powerful tool for orthodontic research and teaching.

This article reports on the current status of the American Association of Orthodontists Foundation (AAOF) Craniofacial Growth Legacy Collection--an AAOF-supported multi-institutional project that uses the Internet and cloud computing to collect and share craniofacial images and data for orthodontic research and education. The project gives investigators and clinicians all over the world online access to longitudinal information on craniofacial development in untreated children with malocclusions of various types. It also is a unique source of control samples for testing the validity of consensually accepted beliefs about the effects of orthodontic treatment or of failure to treat.

How Frequently are "Classic" Drug-Seeking Behaviors Used by Drug-Seeking Patients in the Emergency Department?

Introduction: Drug-seeking behavior (DSB) in the emergency department (ED) is a very common problem, yet there has been little quantitative study to date of such behavior. The goal of this study was to assess the frequency with which drug seeking patients in the ED use classic drug seeking behaviors to obtain prescription medication.

Methods: We performed a retrospective chart review on patients in an ED case management program for DSB.

Effect of cephalometer misalignment on calculations of facial asymmetry.

Introduction: In this study, we evaluated errors introduced into the interpretation of facial asymmetry on posteroanterior (PA) cephalograms due to malpositioning of the x-ray emitter focal spot. We tested the hypothesis that horizontal displacements of the emitter from its ideal position would produce systematic displacements of skull landmarks that could be fully accounted for by the rules of projective geometry alone.

Methods: A representative dry skull with 22 metal markers was used to generate a series of PA images from different emitter positions by using a fully calibrated stereo cephalometer.

Centromedullary pinning of radial neck fractures: length matters!

Centromedullary pinning provides an excellent alternative to open reduction in severely displaced radial neck fractures. It has a low complication rate because it is an extra-articular and minimally invasive technique. The functional results have been shown to be good or excellent in most cases.

Joint arthroplasty, dental treatment, and antibiotics: a review.

Many patients with artificial joints seek guidance from their dental and orthopaedic surgeons on whether they should take prophylactic antibiotics for routine dental treatment. Advice on this has been conflicting in the past, and other than a joint statement from the American Academy of Orthopaedic Surgeons and the American Dental Association, there has been little official guidance. In view of the lack of consensus, we have reviewed the relevant literature and have concluded that antibiotic prophylaxis should not be routinely given to all patients undergoing dental treatment but should be reserved for those patients deemed at high risk.