미백보조광 조사가 치아미백의 효과에 미치는 영향
Effect of the Bleaching light on Whitening Efficacy
- 발행기관 江陵大學校 大學院
- 지도교수 趙庚謨
- 발행년도 2007
- 학위수여년월 2007. 2
- 학위명 석사
- 학과 및 전공 齒醫學科
- 세부전공 齒科保存學 專攻
- 원문페이지 4, 30 p.
- 본문언어 한국어
초록/요약
The aim of this study was to evaluate the influence of light energy on the tooth whitening effect of bleaching agent in vitro. Extracted human mandibular molars were sectioned to 2 fragments(mesial, distal) and lingual portions of crown were used in this study. All specimens were stained using a red wine for 24hours and immersed in artificial saliva. Specimens divided into four groups, group 1 and 2 light-activated by LumaCool (LED, LumaLite, Inc., Spring Valley, USA), group 3 and 4 light-activated by FlipoWhite2 (Plasma acr lamp, Lokki, Australia). Group 1 and 3 bleached with LumaWhite(LumaLite, Inc., Spring Valley, USA), group 2 and 4 bleached with Polaoffice(SDI, Victoria, Australia). Bleaching treatment performed during 10 minutes every 24 hours and repeated 6 times. During bleaching treatment , distal fragments was light-activated but mesial fragments was not. Shade assessment employed before and after bleaching treatment using spectrophotometer. The results of the change in shade was compared and analysed between mesial and distal by using paired-sample T test with 95 % level of confidence. There were no significant differences between mesial and distal fragments except in group 2, 3, 4. In group 2, a* value more change in distal fragments, in group 3, b* value more change in distal fragments, in group 4, a* value less change in distal fragments. After bleaching, L* value and ΔE increased in all groups and the value of a* and b* decreased in all groups. Within the limitation of this test conditions, the results of this study indicate that the light energy has no obvious improving impact on the tooth whitening effect of a bleaching agent
more목차
I. 서론 = 1
II. 연구재료 및 방법 = 4
III. 연구결과 = 13
IV. 총괄 및 고안 = 19
V. 결론 = 23
VI. 참고문헌 = 25
VII. 영문초록 = 28
