New Criteria for Evaluating Shear Adhesion of Newly Developed Ceramic Brackets to Different Basic Designs
Youn Soo Shim1, Sang Bae Lee2, So Young Park3, Jong Bin Kim4, JiSun Shin5, Seung Woo Shin6, Jong Soo Kim7, So Youn An8
1Youn Soo Shim, Department of Dental Hygiene, Sunmoon University, Republic of Korea, East Asian.
2Sang Bae Lee, Principal Research Engineer, Yonsei University, Republic of Korea, East Asian.
3So Young Park, Department of Dental Hygiene, Wonkwang Health Science University, Republic of Korea, East Asian.
4Jong Bin Kim, Department of Pediatric Department, School of Dentistry, Dankook University, Republic of Korea, East Asian.
5Ji Sun Shin, Department of Pediatric Department, School of Dentistry, Dankook University, Republic of Korea, East Asian.
6Seung Woo Shin, Department of Pediatric Department, School of Dentistry, Dankook University, Republic of Korea, East Asian.
7Jong Soo Kim, Department of Pediatric Department, School of Dentistry, Dankook University, Republic of Korea, East Asian.
8So Youn An, Department of Pediatric Dentistry, Wonkwang University, Republic of Korea.
Manuscript received on 08 June 2019 | Revised Manuscript received on 14 June 2019 | Manuscript Published on 22 June 2019 | PP: 94-97 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H10180688S219/19©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This study is designed to provide a new evaluation criterion for the evaluation of shear adhesion of newly developed ceramic brackets to different base designs. Methods/Statistical analysis: The parentheses are selected for testing. Bracket was evaluated for a variety of design characteristics. The brackets used in the tests are W1 (World Bio Tech Co., Ltd., Korea), Clarity ADVANCED (3M Unitek, USA), and Crystaline (TOMY Inc., Japan) respectively. SEM (TM-3000, Hitachi) with lateral and surface area considering surface roughness using optical contactless surface shape measuring devices (Contour GT, Braker, USA) Findings: Our study shows that the base shape of the bracket affects shear adhesion. In the three brackets that conducted the experiment, the shear adhesion(kg/base) ranked 3m, tomy and W1. Lateral area and surface area of 3M is lower than Tomy, but the bond strength of 3M is higher than Tomy. Improvements/Applications: The size and basic design of brackets can influence the adhesion. It was assumed that the larger the bracket base size, the greater the adhesion, the different results were actually. This shows the error of the existing evaluation method, which evaluates adhesion by only a simple horizontal area. In this study, ceramic brackets from other manufacturers have significantly different underlying surface area. Therefore, the assessment of true adhesion must reflect this new criterion, the surface area, not the simple base size.
Keywords: Base Designs, Ceramic Brackets, Debonding, Mechanical Retention, Shear Bond Strength.
Scope of the Article: Mechanical Maintenance