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A comparison between two frictionless brackets and one conventional bracket : An in-vitro study

Thesis

Last updated: 06 Feb 2023

Subjects

-

Tags

Orthodontics

Authors

Manssour, Muhammad Mussttafa

Accessioned

2018-08-26 05:55:11

Available

2018-08-26 05:55:11

type

M.Sc. Thesis

Abstract

Objective: The aim of this study was to evaluate and compare, the kinetic frictional force between two recent generation of frictionless brackets (fx SWLF and Damon 3MX), and one conventional bracket (Mini 2000). Material and Methods: Seventy-two maxillary right stainless steel canine brackets, with slot size 0.022x0.028- inch, were used. The brackets were equally divided into three groups; Group І for the fx SWLF brackets, group ІІ for the Damon 3 MX (self-ligated) brackets, while group ІІІ was for Mini 2000 (conventional) brackets. Kinetic frictional resistance was measured in each group using three wires; 0.018, 0.016×0.022, and 0.018×0.025 inch stst wires. A simulating canine retraction system in which the canine can be retracted in a curved manner at the area of the first premolar which was cut from the model. A vertical force was applied at a cross-head speed of 0.5 mm/minute for 7 mm total sliding distance to evaluate the maximum frictional force between the archwire and the bracket. A universal testing machine was used to measure the kinetic frictional force. Measurements were done under a wet condition using synthetic saliva (Glandosane) to simulate the oral cavity. Results: The synergy bracket showed the least kinetic frictional force exerted among the other two brackets; regardless the size of the wire used.

Issued

1 Jan 2011

DOI

http://dx.doi.org/10.21473/iknito-space/40258

Details

Type

Thesis

Created At

28 Jan 2023