The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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A COMPARATIVE OF RETENTIVE FORCE OF VARIOUS OVERDENTURES USING SEVERAL MAGNETS

수종의 Magnet를 이용한 Overdenture의 유지력에 관한 비교연구

  • Hur, Kyoung-Sook (Department of Prothodontics, College of Dentistry, Dankook University) ;
  • Hur, Song-Ju (Department of Prothodontics, College of Dentistry, Dankook University) ;
  • Cho, In-Ho (Department of Prothodontics, College of Dentistry, Dankook University)
  • 허경숙 (단국대학교 치과대학 보철학교실) ;
  • 허성주 (단국대학교 치과대학 보철학교실) ;
  • 조인호 (단국대학교 치과대학 보철학교실)
  • Published : 1991.02.01
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Abstract

The magnets were widely used to increase the retention of overdentures. The purpose of this study was to compare the break load between overdentures and edentulous models. For this study, Model former(U-402) was used for model fabrication and four different magnets were used for evaluation of break load. The artificial saliva was used between overdenture and model. Breakaway loads were tested with an Instron 1122 at a speed of 2mm/min. The results were as follows. 1. The retentivee forces complete dentures with artificial saliva were than the retentive forces of complete detures without artificial saliva. 2. Magnetic overdenture with artificial saliva showed best retentive force, magnetic overdenture without artificial saliva showed the next retentive force, and the complete denture without artificial saliva showed the worst retention. 3. As the magnetic sizes increased, the retentive forces of magnetics were increased. 4. The retentive force of nipple shape magnet is greater than the retentive force of flate shape magnet in the same size.

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