The study results showed an average expansion in canine, premolar and molar regions of 4.4 mm, 6.8 mm and 9.4 mm, respectively, having significant difference pre-and post-treatment. Thus, it shows that maxillary expansion is efficiently possible with the application of this newly constructed device named eRME. This appliance also acts as a fixed retainer to avoid relapse, hence negating the need for a separate retainer.
The field of orthodontics in its new era is stepping ahead to newer technologic perspective. Additive manufacturing is a relatively new technology with rapidly growing range of applications in many fields of medicine and dentistry. A paradigm shift has constituted the progression from gypsum laboratory to 3-Dimensional printing. 3D printing is now easily accessible for orthodontists, being a reliable and costeffective manufacturing method, which may be used in many aspects of orthodontic practice, and its potential is still growing. The article gives necessary insight into the history, development, available technologies of additive manufacturing and provides updates of application of 3-D printing in orthodontics.
In orthodontic treatment there are so many risk factors. In this factors one is the root resorption. Now a days there is not found any discussion on the onset, severity, and management of root resorption. For the stability of the dentition long term prognosis is require, it is an encouraging reason to identify causal factors than we can minimize the risk, and reduced the amount of root resorption. The aim of this study is To evaluate root resorption as a primary outcome for a population of patients who received orthodontic treatment, in order to give the best accessible evidence upon which clinical resolution can be made for root resorption to minimize the risk and severity. A randomized clinical trial involving human subjects for orthodontic tooth movement, with fixed appliances was carried out, and root resorption during or after treatment was recorded. Pre treatment and Post treatment panoramic radiographs of 60 subjects were taken. Patients were divided into 3 groups. One group had proclination and underwent all 4 extraction. Second group had crowding of teeth and underwent all 4 extraction. And third group were treated with non extraction. It was concluded that root resorption in extraction group is significantly greater when compared with non extraction group.
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