The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 32 Issue 2
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- Pages.249-267
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- 1994
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
A STUDY ON THE FATIGUE AND PHYSICAL PROPERTIES OF TITANIUM USED IN REMOVABLE PARTIAL DENTURES
국소의치용 티나늄의 피로도 및 물리적 성질에 관한 연구
- Kim Hak-Sun (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
- Kim Kwang-Nam (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
- Chang Ik-Tae (Department of Prosthodontics, College of Dentistry, Seoul National University)
- Published : 1994.07.01
Abstract
The purpose of this study was to compare the fatigue, physical properties, flexibility and surface roughness of titanium used in removable partial dentures with those of a type IV and alloy and a cobalt- chromium alloy. Fatigue testing subjected the test specimen to rapid cycling at a given stress until failure occurred by using a small-sized, electrodynamic type bending fatigue testing machine. The S-N curves for the framework materials were generated. For tensile testing, a tensile bar as described in the ADA Specification No.14 was subjected to tensile loading until failure occurred. Load-displacement curves were generated for 18 gauge round specimen and tapered half round specimen. Then the flexibilities were calculated. The surface roughnesses were compared by analyzer. Through analyses of the data, the following conclusions were obtained. 1. The fatigue property of titanium was higher than that of a type IV gold alloy