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A new manufacturing method of all ceramic restoration using alumina tape and presentation of clinical cases

 Nam-Sik Oh  ;  Eui-Seong Kim  ;  Keun-Woo Lee  ;  Jung-Suk Han  ;  Dae-Joon Kim  ;  Myung-Hyun Lee 
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.38(6) : 800-805, 2000 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
Issue Date
All ceramic crown ; alumina tape ; flexure strength ; fithess
In an effort to facilitate fabrication procedure of all ceramic crowns, a novel preparation method for all ceramic crown using alumina tape was developed. The alumina tape having a uniform thickness was cast by using Doctor blade method. The physical properties of newly introduced alumina tape has biaxial flexure strength of 500.600 MPa. The value of toughness is 3.18~3,28 MPa.m(1/2) which corelates with facture and the linear shrinkage rate of the alumina tape is 0.44% during core production. The marginal fitness of the alumina tape all-ceramic restoration with 90degrees shoulder margin had average marginal discrepancy at 78.3micrometer and average marginal gap at 44.4micrometer. At the marginal preparation of 135degrees deep chamfer, the average marginal discrepancy at 82.1micrometer and the average marginal gap at 40.2micrometer had been reported. This fabrication procedure of all ceramic crowns with alumina tapes is easier and less technical sensitive for dental technicians. After restoration with new all ceramic crowns we followed the patients 2 years later, there were no complications as porcelain fractures or periodontal disease. We had good esthetic clinical results with new all ceramic crowns.
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2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
Lee, Keun Woo(이근우) ORCID logo https://orcid.org/0000-0002-3153-190X
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