대한치과기공학회지 (Journal of Technologic Dentistry)

  • 제13권1호
  • /
  • Pages.9-13
  • /
  • 1991
  • /
  • 1229-3954(pISSN)
  • /
  • 2288-5218(eISSN)
대한치과기공학회 (Korean Academy of Dental Technology)
권호 표지

치관보철물(齒冠補綴物) 제작(製作)에 사용(使用)되는 Nickel-Chromium계(系) 합금(合金)의 치경부(齒頸部) 변록(邊綠)에 관(關)한 적합성(適合性)

The Margin Fit of Nickel-Chromium Metal Alloys used for the Production of Crown and Bridge Prosthetics

  • 이인규 (원광보건전문대학 치과기공과) ;
  • 최운재 (원광보건전문대학 치과기공과)
  • Lee, In-Kyu (Dept. of Dental Laboratory Technology Wonkwang Public Health Junior College) ;
  • Choi, Un-Jae (Dept. of Dental Laboratory Technology Wonkwang Public Health Junior College)
  • 발행 : 1991.12.01
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초록

The purpose of this study was to determine the marginal fit of recasting by used nickel-chromium metal alloys, Hi-Crown, New-Crown and CB-80. Ninety crown prosthetics were divided into eighteen groups according to new to old metal ratios. Each crown was seated on its master die and then the marginal gaps were measured under optical microscope($\times$50). All groups were showed good marginal fit, except group 3 of Hi-Crown(156$\mu$m). The results suggest that the marginal fit of Ni-Cr metal alloy casting bodies were good as without concerned to mixed ratios and metals.

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