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The purpose of this study was to obtain information about tooth color change after applying three different carbamide peroxide concentrations for three different application periods: applying low concentration in longer period, medium concentration in intermediate period and high concentration in shorter period.

The experiment was operated on extracted human anterior tooth by applying Night White? Excel2(NW, Discus Dental Inc., USA) which contains carbamide peroxide. The controlled subject to which the bleaching agent was not applied was preserved in the thermohygrostat. The experimented subject was divided into 3 groups: the first group to which applied 10% Night White for eight hours per day, the second group with 16% NW for four hours/day and the third group with 22% NW for one hour/day. A colorimeter(CR221, Minolta, Japan) was used to measure the color of the tooth prior to the bleaching agent(baseline) and that after appling for seven weeks, once a week. CIE(Commission Internationale de l'Eclariage) L*, a*, and b* coordinates were recorded. The color difference (△E*) between the baseline and the subsequent measurements was calculated by the Hunter's formula.

The result showed that the tooth bleaching effect was greater when the low concentration was applied for the longer period of time than that when the high concentration was applied for the shorter period. And it also demonstrated that the maximum bleaching effect can be obtained in the 5th and 6th week. Therefore the general tooth bleaching treatmen

was not needed to be continued over seven weeks.

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기사명 저자명 페이지 원문 목차
티타늄 표면처리에 따른 조골세포의 반응 임영준 外著 pp.1-10

치과주조용 Ag-Pd-Zn-Sn-In 합금의 시효경화 특성 이재호 外著 pp.11-19

타액 조건에 따른 치과용 니켈-티타늄 합금의 부식 특성 김영근 ;이중배 ;최기열 pp.21-28

열수처리한 티타늄 양극산화 피막의 특성 평가 장인호 ;이광원 ;배태성 pp.29-37

Age-hardening reactions in a high-carat Au-Ag-Cu-Pd alloy 이주용 外著 pp.39-45

치과용 니켈-티타늄 합금의 갈바닉 부식 최창혁 ;최기열 ;이중배 pp.47-56

분무 열분해에 의한 Ba_1-x_Sr_x_Fe_12_O_19_계 자성 미립자의 제조 및 특성 변화 김동현 外著 pp.57-63

치과용 콤포짓트 레진의 적정중합을 위한 최소 광조사 시간 평가 임범순 外著 pp.65-73

바륨 페라이트를 함유한 알지네이트 자성 복합 입자의 제조 이덕연 外著 pp.75-79

치아미백제의 농도와 작용시간에 따른 치아 색상변화 김려수 ;임호남 pp.81-89

참고문헌 (31건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 (1995) Effect of mouthguard bleaching on enamel surface, 미소장
2 (1990) What about whiteners? Safety concern explored., 미소장
3 (1998) At-home use of 35% carbamide peroxide bleaching gel: a case report., 미소장
4 (1992) and methods used for common tooth discolorations, 미소장
5 (2000) Teaching nightguard bleaching and other tooth-whitening procedures in North American dental schools, 미소장
6 (1992) Oral soft tissue response to topically applied peroxide tooth whitener, 미소장
7 (1989) Nightguard vital bleaching, 미소장
8 (1990) effect of enamel surface texture and diffusion, 미소장
9 (1992) and effectiveness of current bleaching techniques and applications of the nightguard vital bleaching technique, 미소장
10 The Food and Drug Administration and its influence on home bleaching. 네이버 미소장
11 (1996) Six &12-month color stability after 6 month bleaching tetracycline teeth, 미소장
12 (1997) Six &12-month color stability after 6 month bleaching tetracycline teeth., 미소장
13 (1997) Vital tooth breaching with nightguard vital breaching, 미소장
14 (2000) Current status of nightguard vital bleaching, 미소장
15 (1995) Effect of bleaching agents on dentin permeability to Streptococcus faecalis, 미소장
16 (1989) An in vitro comparison of different bleaching agents in the discolored tooth, 미소장
17 (1999) Colorimetric assessment of laser and home bleaching techniques, 미소장
18 (2000) A clinical evaluation of 10 percent vs15 percent carbamide peroxide tooth- whitening agents. , 미소장
19 (1998) Use of different concentrations of carbamide peroxide for bleaching teeth: an in vitro study, 미소장
20 (1994) Effect of hydrogen peroxide and sodium perborate on the microhardness of human enamel and dentin, 미소장
21 (1998) Tooth bleaching using peroxide-containing agents: current status of safety issues., 미소장
22 (2000) Clinical evaluation of bleaching agents of different concentrations, 미소장
23 (2000) Degradation of gel in tray whitening, 미소장
24 (2002) A clinical evaluation of a bleaching agent used with and without reservoirs, 미소장
25 (1992) Alterations in human enamel surface morphology following vital bleaching, 미소장
26 (1997) Vital tooth bleaching : sensitivity and pulpal considerations. , 미소장
27 (2000) Effects of three concentrations of carbamide peroxide on the structure of enamel, 미소장
28 (1991) its effect on oral tissues, 미소장
29 (1985) Current status of shade selection and color matching, 미소장
30 (2000) Protective effect of copalite surface coating on mercury release from dental amalgam following treatment with carbamide peroxide, 미소장
31 (1987) Color stability of dental composite resin materials for crown and bridge veneers, 미소장

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