31 721

Cited 0 times in

연마재 종류에 따른 금합금 소실량과 연마 정도

Other Titles
 (The) amount of loss and the degree of surface smoothness of gold alloy polishing rubber point materials 
Authors
 김명화 
Issue Date
1996
Description
치의학과/석사
Abstract
[한글]

치과용 주조수복물의 임상 조정후에는 활택한 표면이 상실되므로 재연마의 과정이 추천된다. 그러나 정확히 조정된 접촉면을 연마시에는 연마재의 종류와 연마 시간에 따른 금속의 소실에 의해 의도된 접촉 정도보다 약해진 접촉을 얻게 될 가능성이 있다. 이에 본

연구는 국내에 시판되고 있는 4개 회사 8종의 금합금 연마재로 제 2형 금합금을 연마한 후 표면조도기를 사용하여 연마시 소실된 금속의 양을 측정하고, 사용한 금합금 연마재 중 3종의 brown rubber point로 연마 시간을 달리하여 연마한 후 주사전자현미경으로 연마 정도를 관찰하였다.

연마재의 종류와 연마 시간에 따른 금합금 소실의 양과 연마면의 활택 상태를 비교하여 다음과 같은 결과를 얻었다.

1. 금합금 연마재 중 3종의 brown rubber point의 연마시 소실된 두께에 있어서는 Alphaflex brown, Shofu brown, Eveflex brown제품 순이었으며 이들은 모두 통계학적인 유의차를 보였다.

2. 금합금 연마재 중 5종의 green rubber point의 연마시 소실된 두께에 있어서는 Shofu green, Alphaflex green, Dedeco, Eveflex green, Shofu supergreen 제품 순이었으나, Alphaflex와 Dedeco제품 사이에서는 유의차가 없었다.

3. 금합금 연마재 전체 8종의 비교시는 Eveflex brown, Alphaflex green, Dedeco제품 사이에서 유의차가 없었다.

4. 금합금 연마재에 의한 1회전당 평균 금합금 소실두께는 Alphaflex brown제품이 0.329㎛으로 가장 크고 Shofu supergreen제품이 0.022㎛으로 가장 작은 값을 나타냈다.

5. 주사전자현미경을 사용하여 연마 시간에 따른 연마 정도를 비교시, Alphaflex brown제품은 20초, Shofu brown제품은 30초, Eveflex brown제품은 40초간 연마한 시편에서 green stone point로 형성된 표면 거칠기가 소실되었으나 연마재로 인한 미세한 표면 거칠기가 관찰되었다.

이상의 결과로 볼 때 금합금을 사용한 치과용 주조 수복물의 임상 조정후 사용되는 연마재는 인접면 접촉이나 교합 접촉에 영향을 미칠 수 있으므로 정확한 기공 과정을 통하여 최소한의 임상 조정이 이루어지도록 하여야 하며, 실리콘 연마재 사용 후에는 tripoli와 rouge를 사용하여 고도로 활택한 표면을 형성하여야 하겠다.

[영문]

After clinical adjustment of dental casting restoration, re-polishing procedure is recommanded because the smooth gold sureface is lost. But there is the possibility to get more loose contact than that intended by loss of gold alloy according to the kinds of polishing materials and polishing time. Therefore in this study I polished type Ⅱ gold alloy with 390gm force, 20,000rpm speed, and 8 kinds of gold alloy polishing materials, fabricated by 4 companies and then measured the amount of loss of gold alloy with Sufcorder SEF-30D and observed alloy surfaces

polished by 3 brown rubber points with SEM.

The amount of loss of gold alloys polished with 8 kinds of polishing materials and the degree of smoothness of gold alloys according to polishing time and polishing materials were compared. The following results were obtained:

1. When the amount of loss of gold alloys polished with 3 kinds of brown rubber point was compared, Alphalex brown point had the most amount of alloy loss, followed in decreasing order by Shofu brown point and Eveflex brown point. There was statistically significant difference in the amount of alloy loss according to

polishing materials.

2. When the amount of loss of gold alloys polished with 5 kinds of green rubber point was compared, Shofu green point had the most amount of alloy loss, followed in decreasing order by Alphaflex green point, Dedeco green clasp polisher, and Eveflex green point. There was statistically significant difference in the amount of alloy loss according to polishing materials except Alphaflex green point and Dedeco green clasp polisher.

3. When the amount of loss of gold alloys polished with all kinds of rubber point was compared, there was no significant difference in Eveflex brown point, Alphaflex green point, and Dedeco green clasp polisher.

4. When average amount of alloy loss per 1 revolution by polishing materials was compared, Alphalex brown point had the greatest value as 0.329㎛ and Shofu supergreen point had the lowest value as 0.022㎛.

5. When the degree of surface smoothness of gold alloy polished with 3 kinds of brown rubber point was compared, in Alphalex brown point surface roughness was completely lost after 20 seconds polishing time, in Shofu brown point 30 seconds, in Eveflex brown point 40 seconds. But in every gold alloys fine scratch formed by rubber points was observed,

Based on the results of this study, as rubber polishing materials used in polishing of dental casting restoration after clinical adjustment influenced on the tightness of occlusal or proximal contact, we should make dental casting restoration with minimum error through careful laboratory procedure and form very

smooth surface of restoration with tripoli and rouge after use of silicone polishing materials.
Full Text
https://ymlib.yonsei.ac.kr/catalog/search/book-detail/?cid=CAT000000006373
Files in This Item:
제한공개 원문입니다.
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 2. Thesis
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/118250
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links