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Full-Text Articles in Medicine and Health Sciences
Evaluation Of Frictional Forces Between Brackets Of Different Types At Various Angulations And An Arch Wire: With And Without Pulsating Vibration, Benjamin M. Christman
Evaluation Of Frictional Forces Between Brackets Of Different Types At Various Angulations And An Arch Wire: With And Without Pulsating Vibration, Benjamin M. Christman
Student Theses, Dissertations and Capstones
Objective: The objective of this study was to determine the effect of pulsating vibration on the sliding resistance between orthodontic brackets and stainless steel wires. Brackets were placed at two different angulations (0° and 5°) to simulate leveling of a tipped tooth during tooth movement. Pulsating vibration was delivered via the AcceleDent device.
Background: Friction is defined as a force that retards or resists the relative motion of two objects in contact, and its direction is tangential to the common boundary of the two surfaces in contact. This has been of interest to the orthodontist since the mid-20th century. Since …
Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi, Shruti Sushilkumar Sonavane
Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi, Shruti Sushilkumar Sonavane
All ETDs from UAB
Objectives: To measure retention of lithium disilicate (IPS e.max CAD, Ivoclar Viva-dent) and zirconia reinforced lithium disilicate (CELTRATM DUO, Dentsply) copings luted using resin cements and resin-modified glass ionomer cement. Methods: 110 Extracted human, non-carious mandibular 2nd premolars (n=10) were embedded in PVC cylinders with acrylic resin and placed into a lathe to produce a uni-form crown preparation (22°-convergence & 3mm-height). Following the orientation groove placement (69L bur), preparations were scanned and milled using a CEREC 3D/Sirona machine to produce e.max and CELTRATM DUO crowns. Preparations were imaged with a digital microscope (Keyence/VHX-600-20X) and the surface area of each crown …