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a-TCP를 첨가한 글라스 아이오노머 시멘트의 법랑질 탈회저항성

Other Titles
 Resistance to decalcification of enamel of glass ionomer cement with α-TCP 
Authors
 강재경  ;  김희경  ;  이민영  ;  김광만  ;  김경남  ;  김명은 
Citation
 Korean Journal of Dental Materials (대한치과재료학회지), Vol.42(2) : 107-116, 2015 
Journal Title
 Korean Journal of Dental Materials (대한치과재료학회지) 
ISSN
 2384-4434 
Issue Date
2015
Keywords
Decalcification ; Glass ionomer ; α-TCP(alpha-tricalcium phosphate) ; QLF(Quantitative light-induced fluorescence)
Abstract
The aim of this study was to evaluate changes in decalcification resistance of glass ionomer containing α-TCP. Total forty cavities were prepared form extracted bovine teeth and were divided into four groups of ten each in order to evaluate decalcification resistance. The cavities of each groups were restored with glassionomer cement containing 0 %(Group1), 5 %(Group2), 15 %(Group3) and 25 %(Group4) α-TCP. After half of each specimen were treated with varnish, there were immersed in a decalcifying solution for 96 hours at 37 ℃. The mineral loss of specimens were measured by fluorescence loss values using a QLF-D. In addition, compressive strength were measured according to ISO 9917-1. According to the results, loss of fluorescence(△F, %) was –5.91 in group 1, –5.88 in group 2, –5.82 in group 3, –6.06 in group 4 (p>0.05). loss of minerals(△Q, %, ㎜2) was –245.72 in group1, –146.40 in group2, –143.50 in group3, –251.98 in group4(p>0.05). Decalcified area(area, ㎜2) was 40.75(35.3) in group1, 24.05(48.13) in group2, 23.9(22.02) in group3, 28.28(58.41) in group4(p>0.05). Loss of fluorescence, loss of minerals and decalcified area of group2 and group3 were lower than group1 and 4. But there were no significant difference among groups. Compressive strength(MPa) was 148.99 in group1, 121.12 in group2, 62.59 in group3, 19.38 in group4, decreased statistically significant(p<0.05). Although there were no significant difference to resistance of decalcification, it was showed that resistance of decalcification of glass ionomer cement containing 5 % and 15 % of α-TCP were lower than glass ionomer cement.
Files in This Item:
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DOI
10.14815/kjdm.2015.42.2.107
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/165889
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