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Original Research
Open AccessSurface Roughness on the Slots and Wings of Various Ceramic SelfLigating Brackets and their Potential Concern on Biofilm Formation
Surface Roughness on the Slots and Wings of Various Ceramic SelfLigating Brackets and their Potential Concern on Biofilm Formation
1Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, Korea
2Department of Medical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
3Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
4Research Administration, Advanced Academic Programs, Krieger School of Arts and Sciences, Johns Hopkins University, Washington, DC USA
5Postgraduate Orthodontic Program, Arizona School of Dentistry & Oral Health, A.T. Still University, Mesa, AZ 85206 USA
6Graduate School of Dentistry, Kyung Hee University, Seoul, Korea
*Corresponding Author(s): Jae Hyun Park E-mail: jpark@atsu.edu
Abstract
Objective: The surface roughness of various orthodontic materials could affect biofilm formation and friction. The purpose of this study was to examine the surface roughness and chemical composition of the slots and wings of several ceramic self-ligating brackets. Study design: Four types of ceramic self-ligating brackets were separated into experimental groups (DC, EC, IC, and QK) while a metal self-ligating bracket (EM) was used as the control group. Atomic force microscopy and energy-dispersive x-ray spectroscope were used to examine the surface roughness and chemical composition of each bracket slot and wing. Results: The control group was made of ferrum and chrome while all the experimental groups were comprised of aluminum and oxide. There was a statistically significant difference in the roughness average (Sa) among the various selfligating brackets (p< 0.001 in slots and p<0.01 in the wing). The slots in the EC group had the lowest Sa, followed by the DC, IC, control, and QK groups. The wings in the IC group had the lowest Sa, followed by the EC, DC, control, and QK groups. Conclusions: There is a significant difference in the surface roughness of the slots and wings among several types of ceramic self-ligating brackets.
Keywords
Self-ligating bracket; Atomic force microscopy; Energy-dispersive x-ray spectroscope; Surface roughness; Biofilm
Cite and Share
Ki-Ho Park,Se Jik Han,Samjin Choi,Kyung Sook Kim,Steven Park,Jae Hyun Park. Surface Roughness on the Slots and Wings of Various Ceramic SelfLigating Brackets and their Potential Concern on Biofilm Formation. Journal of Clinical Pediatric Dentistry. 2020. 44(6);451-458.
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