Dentsply Sirona is an American dental equipment manufacturer and dental consumables producer that markets its products in over 120 countries. It has factories in 21 countries. The present company is largely the result of a merger in 1993 in which Gendex Corporation acquired Dentsply International Inc. for $590 million.As an equipment maker, it designs and manufactures laboratory and specialty products relating to dental supplies. With regards to consumable products, it specializes in anesthetics, plaque and gum disease prevention (prophylaxis) and tooth polishers. It also designs and constructs artificial teeth. It has also been cited as a key player in the future-intra oral flat panel sensor market. Because of the income disparity between wealthy and developing nations, the variety of products in demand differs from region to region (and thus subsidiary to subsidiary since many of them are regional).On January 17, 2018, Dentsply Sirona announced the appointment of Donald M. Casey Jr., formerly CEO of the Medical Segment of Cardinal Health, as CEO and a member of the board.In 2018 a Netherlands-based certification company awarded Dentsply the “Top Employer” certification.In 2019 the company joined forces with the American Association for Dental Research (AADR) to co-sponsor the Student Competition for Advancing Dental Research and its Application (SCADA). The SCADA aims to bolster students research.The company was ranked #56 by Forbes as America's Best Midsize Employers 2019.
La integración de los estudiantes con y sin necesidades educativas especiales no depende, al menos únicamente, de una pedagogía específica aplicada con determinados estudiantes modos curriculares diferenciados, sino que, sobre todo, debe tener en cuenta la capacidad de la comunidad educativa para generar un modelo de educación que proporcione, al lado de las diferentes formas educativas adaptadas, aquellos programas que fomenten el desarrollo de las actitudes y percepciones positivas de sus participantes hacia el proceso educativo iniciado. Este artículo intenta mostrar precisamente las actitudes de las personas implicadas en los procesos de enseñanza-aprendizaje, así como su influencia en las formas de integración de los estudiantes con necesidades educativas especiales. Descriptores: • Actitudes • Discapacidad • Escuela inclusiva
Rotationally symmetric components (such as gears and axels) are ubiquitous to modern devices, and their precision manufacture is necessary to keep costs and manufacture time down, as well as reduce waste and possibly hazardous component failure. The manufacturing errors, which affect the shape in the rotation axis, are grouped together into the common term “runout". Here we present a potential updated standard for characterising the runout of rotationally symmetric machined parts in three-dimensions, and evaluated using virtual instrumentation, enabling an accurate characterisation of the three dimensional (3D) surface deformation of a part from minimal surface information. For any 3D characterisation method to be widely adopted by the science, technology, engineering, and mathematics community, it must be fully compatible with previous methods and standards. As such, the proposed method produces a 3D runout vector based on four standard profile measurements. To evaluate the efficacy of the proposed runout method, a technique for evaluating the errors of commonly used virtual instruments has been developed. This evaluation technique produces a single-valued quantification of the deviation of the instrument outputs compared to the input parameters, decoupled from the errors on the instrument itself.
Introduction. Every second child and every third adult requires orthodontic care. However, the greater the extent of necessary dental intervention, the higher the risk of adverse outcomes (clinical, radiological, aesthetic, and others) ranging from 15% to 86% in probability. This systematic review analyzes the most common complications arising from maxillary expansion during orthodontic treatment. These complications result from both errors in treatment strategy and patients’ noncompliance with postoperative recommendations, among other causes. Objective. The aim of this study is to analyze documented cases of complications associated with orthodontic maxillary expansion in patients who received such treatment between 2019 and 2025, and to discuss the relevance of these findings in light of the increasing demand for orthodontic care and the consequent rise in the risk of treatment-related complications. The article is formatted and structured according to the standards for objective and transparent systematic reviews (PRISMA 2020 revision). Literature sources were obtained from official scientific electronic databases (PubMed, eLibrary.ru, CyberLeninka, The Cochrane Library). The studies included in this review met the eligibility criteria and underwent quality assessment using the Cochrane Risk of Bias tool. Results. A total of 38 sources describing complications following orthodontic maxillary expansion were selected for analysis. According to these sources, possible complications include root resorption, buccal tipping of teeth, vascular and nerve damage, as well as facial asymmetry with impaired respiration. Conclusion. Orthodontic treatment of maxillary anomalies is a highly effective method of correction; however, potential adverse outcomes must not be overlooked, as the risk of their development depends on both the clinician and the patient.
