نتایج جستجو برای: orthodontics forces
تعداد نتایج: 92386 فیلتر نتایج به سال:
orthodontic miniscrews are widely used as temporary anchorage devices to facilitate orthodontic movements. miniscrew loosening is a common problem, which usually occurs during the first two weeks of treatment. macrodesign can affect the stability of a miniscrew by changing its diameter, length, thread pitch, thread shape, tapering angle and so on. in this study, a 3-d finite element analysis wa...
An investigation on stress distribution of the anterior maxillary teeth PDL during the application of intrusive forces in midline Dr. S.M. Abtahi * - Dr. F. Heravi** * - Assistant professor of Orthodontics Dept. Faculty of Dentistry Hamedan University of Medical Sciences. ** - Assistant professor of Orthodontics Dept. Faculty of Dentistry Mashhad University of Medical Sciences. Background an...
INTRODUCTION Patients with type 1 diabetes have shown decreased bone mineral density (BMD) values. The need for orthodontic treatment in diabetic patients is usually associated with occlusal problems and the occurrence of abnormalities in the development of the jaws. The aim of this study was to analyze bone response of insulin-treated and untreated diabetic rats after applying orthodontic forc...
Authors: Surg. Cdr. (D) Sukhbir Singh Chopra, M.D.S. Classified Specialist, (Orthodontics) Research Pool O ffi cer, Armed Forces Medica l College, Pune 411 040. Mobile +91 -8055 182502 I.andl ine 26306023 E-mail : [email protected] Col. Rajat Mitra, M.D.S. Associate Professor, (Orthodontics) Armed Forces Medical College, Pune. Maj. Dinesh Chaudhary, B.D.S. Resident (Orthodontics) Armed For...
Apical root resorption is an undesirable sequela of orthodontic therapy in some patients that results in permanent loss of tooth structure from the root apex. Experimental studies done have shown that all human teeth develop resorption lacunae on the pressure side of root surface shortly after the application of orthodontic forces, and they are re________________________________________________...
Orthodontics has been developing for 282 years. We can distinguish an initial period when practitioners limited themselves to ‘‘straightening’’ teeth that were out of position. Then, under the influence of Edward Hartley Angle, they devoted their efforts to correcting ‘‘malocclusions.’’ Now, during its third period, orthodontics has divided itself into two branches. The American school believes...
The purpose of this review article is to provide the dental practitioner with an understanding of the interrelationship between periodontics and orthodontics in adults. Specific areas reviewed are how periodontal tissue reacts to orthodontic forces, influence of tooth movement on the periodontium, effect of circumferential supracrestal fiberotomy in preventing orthodontic relapse, effect of ort...
Extra-oral appliances are used in orthodontics to apply forces to the jaws, dentition or both and the popularity of these appliances is cyclical. Although the use of retraction headgear for the management of Class II malocclusion has declined over the last 20 years with the refinement of non-compliance approaches, including temporary anchorage devices, headgear still has a useful role in orthod...
PURPOSE Demineralization of a thin layer of bone over a root prominence after corticotomy surgery can optimize the response to applied orthodontic forces. This physiologic response is consistent with the regional acceleratory phenomenon process. When combined with alveolar augmentation, one is no longer strictly at the mercy of the original alveolar volume and osseous dehiscences, and fenestrat...
UNLABELLED The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment. This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage a...
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