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Frictional Resistance of Two Types of Esthetic Self-Ligating Brackets
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HA Kamil *    , ShSh Taha |
| 1.Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq. , heba.Ali1203a@codental.uobaghdad.edu.iq |
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Abstract: (264 Views) |
Background and Objective: Friction between the archwire and bracket is the main problem during tooth movement. Self-ligating bracket systems have become common in recent years. The aim of this study was to investigate and compare the effect of active and passive esthetic self-ligating brackets on static frictional force with different orthodontic archwires under wet conditions.
Methods: This in vitro study included 180 ceramic self-ligating brackets, 90 passive brackets (Damon Clear), and 90 active brackets (Empower Clear), which were tested for frictional resistance using three different types of 0.018-inch archwires, namely copper NiTi archwires and two esthetic archwires (Epoxy- and rhodium-coated NiTi archwires). According to the types of brackets and archwires, six groups of ten were defined. An experimental model with three non-leveled brackets in wet condition using artificial saliva was adopted. The friction test was conducted by Instron Tinius Olsen testing device. The test was performed at a room temperature ranging from 24-25°C.
Findings: Empower clear with Cu NiTi archwire showed the highest mean value of static frictional force with the mean value of (327.85±53.43) and Damon clear with epoxy coated NiTi archwire showed the lowest mean value (58.06±10.87). There were significant differences in the static frictional forces generated in both bracket systems when coupled with the Epoxy wires (p=0.000) and when coupled with the CuNiTi and Rhodium archwires (p=0.001).
Conclusion: The result of this study showed that the Damon Clear brackets produce lower frictional forces than Empower Clear brackets and Epoxy-coated NiTi archwires can produce lower static frictional force compared to Rhodium-coated NiTi and CuNiTi archwires.
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| Keywords: Friction, Coated Archwire, Ceramic Bracket, Self-Litigating Bracket. |
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Full-Text [PDF 359 kb]
(35 Downloads)
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Type of Study: Research |
Subject:
Dentistry (Pathology)
Received: 2023/07/2 | Accepted: 2023/10/7 | Published: 2024/09/10
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