Aim: The aim of this study is to evaluate and compare the influence of 2 types of sterilization/disinfection procedures on the tensile strength and surface topography of two orthodontic wires (Nickel-titanium (NiTi), and cupper Nickel-titanium (CuNiTi)). Materials and Methods: Sample comprised of 140 wires(100 new 0.017×0.025″ Ovoid rectangular, and 40 used 0.017×0.025″ Ovoid rectangular wires). They were randomly divided into 7 groups according to method and number of sterilization cycles,each group equally divided into 2 subgroups according to wire composition. Surface topography was examined with scanning electron microscope (SEM) and ultimate tensile strength (UTS) was tested using universal testing machine after sterilization and disinfection of the experimental groups. Result: SEM images revealed an increase in surface irregularities in CuNiTi and NiTi wires after sterilization. UTS of CuNiTi and NiTi wires after one cycle of autoclave sterilization procedure, or chemical sterilization for one or two cycles were not significantly different when compared with the control group. NiTi and CuNiTi archwires were affected after two cycles of autoclave sterilization.The mean UTS of clinically used and recycled archwires increased significantly when compared with the control group. Used and recycled archwires were affected considerably by autoclave sterilization Conclusion: Autoclave sterilization and chemical sterilization solution can be recommended for sterilization of orthodontic wires for one cycle.
The current trial proved the efficiency of the use of miniplates anchorage with FFRD in enhancement the skeletal outcomes of Class II treatment. The technique is advocated for use in Class II subjects having pre-treatment proclined lower incisors.
Objectives:The aim of this study was to evaluate the dentoskeletal effect of buccal bone graft with buccal surgically assisted rapid maxillary expansion in young adults using cone beam computed tomography. Methods: The current randomized clinical study was conducted on a total sample of 21 orthodontic patients. The sample with mean age 20 Y. CBCTs were taken before and after orthodontic expansion. The patients were divided in to three groups, group I: consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccopalatal corticotomy, group II: consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccal corticotomy only, group III consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccal corticotomy only, followed by immediately placement of bone graft directly over the decorticated plate. Results: The results showed high significant increase in buccal bone thickness in the group III. On the other hand, there was a significant decrease increase in buccal bone thickness in groups I&II. Conclusion: The buccal bone graft with surgically assisted RME in young adult leads to increase in buccal bone thickness than the other technique without bone graft. The other two techniques without bone graft showed significant reduction in buccal bone thickness.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.