Direct와 Indirect spruing에 의한 가철성국부의치 금속구조물의 결함에 관한 연구
A study on defects of RPD metal framework with direct and indirect spruing
광주보건전문대학논문집 1995년 20권 1호 p.337 ~ 344
소속 상세정보
임동천/Lim DC
KMID : 0615219950200010337
Abstract
The purpose of this study was to determine defects of maxillary RPD(removable partial denture) with a variety of spruing arrangements and two directions of liquid metal feeding.
A factorial experimental design, three spruing methods, two metal feeding directions, and two different weights of metal were used to cast 60 Kennedy class Ⅱ modification 1 RPDs.
The results were as follows :
1. The RPD component examined had a significant influence of the occurrence of casting defects(P<0.001).
2. The interaction between weights of metal and spruing arrangements had a significant effect on the occurrence of casting defects(P<0.05).
3. Minimal metal weight could be used successfully to produce sound., RPD frameworks.
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