Cited 0 times in

141 0

도재의 부식정도에 따른 접합강도에 관한 실험적 연구

Other Titles
 (An) experimental study on bond strength of etched procelain 
Issue Date
1986
Description
치의학과/석사
Abstract
[한글] 치과용 도재의 표면을 부식처리하여 접합성 composite resin으로 접착시키는 방법이 치과영역에 새로이 응용되어, 도재의 파절시 회복과 의치상 레진, 자연치아, 금속과의 접합이 개선되었으나 고농도의 불화수소산이 인체에 유해하여 구강내 사용이 어려웠다. 이에 저자는 피부와 접촉시 별다른 유해작용이 없는 5% 불화수소산에 의한 부식정도와 접합촉진제인 Silane coupling agent의 도포여부, 접합성 composite resin의 종류에 따른 도재와 전해부식된 금속과의 접합강도를 측정하여 연구하고, 도재의 부식정도와 전해부 식된 금속을 주사전자 현미경으로 관찰한 결과 다음과 같은 결론을 얻었다. 1. 5% 불화수소산에 의한 도재의 뚜렷한 부식양상이 주사전자 현미경에 의해 관찰되었다. 2. 전해부식된 금속표면에서 수지상 구조의 주변이 부식된 양상이 주사전자 현미경에 의해 관찰되었다. 3. 모든 군의 접합강도는 부식시간 경과에 따라 증가하였고 모든 군에서 유의의 차가 있었다(P <0.01). 4. Silane coupling agent도포군의 접합강도는 도포하지 않은 군보다 컸다. 5. 부식시간 경과에 따른 접합강도의 증가율은 Silane coupling agent를 도포한 군이 도포하지 않은 군보다 낮았다. 6. Comspan사용군의 접합강도가 Panavia 사용군의 접합강도보다 컸다. AN EXPERIMENTAL STUDY ON BOND STRENGTH OF ETCHED PORCELAIN, Kyung Cho, D.D.S. Department of Dental Salience, The Graduate School, Yonsei University (Directed by Professor Ho Yong lee, D.D.S., M.S.D., Ph.D.) To investigate the bond strength of etched porcelain, porcelain specimens were etched by 5% hydrofluoric acid during the time of 2.5 min., 5 min., 7.5 min., and 10 min. at 23℃ and observed by SEM. Also, electrolytically etched metal was observed by SEM. Etched porcelain specimens were treated or were not treated with Silane coupling agent and bonded to etched metals with Comspan and Panavia. The bonded specimens were stored in water at 37℃. 24 hours after blend-ing, the bond strengths were measured. There were four groups of 25 specimens each. Group 1 was bonded with Panavia. Group 2 was bonded with Panavia after treated with Silane coupling agent. Group 3 was bonded with Comspan, Group 4 was bonded with Comspan after treated with Silane coupling agent. The results were as follows: 1. The etched surfaces of porcelains were obviously observed by SEM. 2. The dendritic arms were observed in etched metal by SEM. 3. The bond strength in relation to the increase of etching time increased and an analysis of variance shows significantly different at the 0.01 level in all groups. 4. The bond strength of Silane coupling agent treated groups were higher than the untreated. 5. The ratios of increase of the bond strengths of Silane coupling agent treated groups in relation to the increase of etching time were lower than the untreated. 6. The bond strength of the groups used Comspan were higher than Panavia.
[영문] To investigate the bond strength of etched porcelain, porcelain specimens were etched by 5% hydrofluoric acid during the time of 2.5 min., 5 min., 7.5 min., and 10 min. at 23℃ and observed by SEM. Also, electrolytically etched metal was observed by SEM. Etched porcelain specimens were treated or were not treated with Silane coupling agent and bonded to etched metals with Comspan and Panavia. The bonded specimens were stored in water at 37℃. 24 hours after blend-ing, the bond strengths were measured. There were four groups of 25 specimens each. Group 1 was bonded with Panavia. Group 2 was bonded with Panavia after treated with Silane coupling agent. Group 3 was bonded with Comspan, Group 4 was bonded with Comspan after treated with Silane coupling agent. The results were as follows: 1. The etched surfaces of porcelains were obviously observed by SEM. 2. The dendritic arms were observed in etched metal by SEM. 3. The bond strength in relation to the increase of etching time increased and an analysis of variance shows significantly different at the 0.01 level in all groups. 4. The bond strength of Silane coupling agent treated groups were higher than the untreated. 5. The ratios of increase of the bond strengths of Silane coupling agent treated groups in relation to the increase of etching time were lower than the untreated. 6. The bond strength of the groups used Comspan were higher than Panavia.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/117016
Appears in Collections:
2. 학위논문 > 2. College of Dentistry (치과대학) > 석사
사서에게 알리기
  feedback
Fulltext
교내이용자 서비스로 제공됩니다.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

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

Browse