금속 소부 도재관의 경우 인접면에서 접촉점의 위치가 도재 파절에 미치는 영향에 관한 연구
A Study on effect that position of contact area at adjacent side has on fractures of porcelains in case of porcelain fused to metal crown
김용원,
소속 상세정보
김용원 ( Kim Yong-Won ) - 보화치과기공소
KMID : 0362120070290020173
Abstract
There was a great problem about the deposition between materials of a different kind at the beginnings of the introduction of porcelains, however, thereafter the deposition efficiency was settlded to the sufficient level of all user thanks to effort to have studied by many scholars and clinical authorities.
But in a clinical process, as the difference of designs has an effect on fractures of porcelains, this
researcher divided them into 4 groups of A: 1 , B: 2 , C: 3 , and D: 4 , and made 40 pieces to each 10 as the test samples to consider a length axis of tooth for studies in accordance with a position of a finishing line to meet between porcelain and metal at the contact point at the adjacent side to a metal porcelain.
The sample materials are those to be use at the open market and the test samples wer completed by the same manufacturing technique to that of existent metal porcelain tube.
As a result of the strength test on fractures, the average value is as in the following, A: 1 - 8.5bar, B: 2 - 10.5bar, C: 3 - 14.3bar, and D: 4 - 15.0bar.
In case of the metal porcelain tube, the more faraway to process parts of metal and porcelain from the contact point of adjacent side has the stronger strength of fractures, Accordingly, the research shows that it had better to keep off more than 3 to consider a ledngth axis of tooth.
키워드
Porcelain fused to metal crown;Finishing line porcelain fracture;Contact area
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