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RISS 인기검색어
- 검색키워드
- 저자 : ( V. Magesh ) (검색결과 4 건)
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Finite element analysis of different Debonding methods in Orthodontics
( V. Magesh ),( P. Harikrishnan ) 한국감성과학회 2021 한국감성과학회 국제학술대회(ICES) Vol.2021 No.-
Orthodontic bracket is a component of fixed appliance which is bonded on the tooth surface to apply force and moments. Debonding of the orthodontic bracket is done at the end of treatment. In general, Orthodontists use few techniques to debond a bracket from tooth enamel surface namely peel, shear, compression and torsion. In this study, Finite Element Analysis (FEA) of an orthodontic bracket with a tooth was analyzed with different debonding techniques. Solid model of an orthodontic bracket was created along with the tooth and adhesive layer. Three existing debonding methods such as tension, torsion and shear on an anterior tooth were compared with new method of debonding called compression method. The principal stresses on the tooth enamel were evaluated after debonding. The maximum principal stresses were 8.15 MPa, 27.87 MPa, 35.18 MPa and 17.77 MPa in compression, tension, torsion and shear debonding methods respectively. The results showed that compression method was better for debonding than tensile, torsion and shear methods as it produced least detrimental forces to the enamel during debonding. Thus, we suggest clinicians that the compression method may be suitable for debonding with least enamel damage and patient discomfort.
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Finite element analysis of different Debonding methods in Orthodontics
( V. Magesh ),( P. Harikrishnan ) 한국감성과학회 2021 추계학술대회 Vol.2021 No.0
Orthodontic bracket is a component of fixed appliance which is bonded on the tooth surface to apply force and moments. Debonding of the orthodontic bracket is done at the end of treatment. In general, Orthodontists use few techniques to debond a bracket from tooth enamel surface namely peel, shear, compression and torsion. In this study, Finite Element Analysis (FEA) of an orthodontic bracket with a tooth was analyzed with different debonding techniques. Solid model of an orthodontic bracket was created along with the tooth and adhesive layer. Three existing debonding methods such as tension, torsion and shear on an anterior tooth were compared with new method of debonding called compression method. The principal stresses on the tooth enamel were evaluated after debonding. The maximum principal stresses were 8.15 MPa, 27.87 MPa, 35.18 MPa and 17.77 MPa in compression, tension, torsion and shear debonding methods respectively. The results showed that compression method was better for debonding than tensile, torsion and shear methods as it produced least detrimental forces to the enamel during debonding. Thus, we suggest clinicians that the compression method may be suitable for debonding with least enamel damage and patient discomfort.
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SUBCLASSES OF STARLIKE AND CONVEX FUNCTIONS OF ORDER AND TYPE WITH NEGATIVE COEFFICIENTS
N. Magesh,V. PRAMEELA 장전수학회 2013 Advanced Studies in Contemporary Mathematics Vol.23 No.2
In this paper, we define a subclass of starlike functions and obtain coefficient estimates. Further, we investigate extreme points, growth and distortion bounds, radii of starlikeness and convexity and modified Hadamard products.
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Certain subclasses of starlike and convex functions of order α with negative coefficients
N. Magesh,V. PRAMEELA 장전수학회 2013 Proceedings of the Jangjeon mathematical society Vol.16 No.3
In this paper, we define a subclass of starlike functions and obtaincoefficient estimates. Further, we investigate radii of starlikeness and convexityfor a family of integral operator and neighborhood properties.
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