Restorative Dentistry and Endodontics

  • 제31권4호
  • /
  • Pages.312-322
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  • 2006
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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복합레진의 표면 거칠기에 따른 투명도와 표면 색상의 차이에 관한 연구

INFLUENCE OF THE SURFACE ROUGHNESS ON TRANSLUCENCY AND SURFACE COLOR OF THE DENTAL COMPOSITE RESINS

  • 조규정 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 박수정 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 조현구 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 김동준 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 황윤찬 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 오원만 (전남대학교 치과대학 보존학교실, 치의학연구소) ;
  • 황인남 (전남대학교 치과대학 보존학교실, 치의학연구소)
  • Cho Kyu-Jeong (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Park Su-Jung (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Cho Hyun-Gu (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Kim Dong-Jun (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Hwang Yun-Chan (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Oh Won-Mann (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
  • Hwang In-Nam (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University)
  • 발행 : 2006.07.01
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초록

본 연구는 복합레진의 표면 연마에 의한 표면 거칠기가 표면 색상과 투명도에 어떤 영향을 미치는가를 알아보고자 시행하였다. Charisma (Heraeus Kulzer GmbH, Domagen, Germany)의 B1과 A3, Esthet-X (DENTSPLY Caulk, Milford, USA)의 B1과 B3 레진으로 거칠기에 따른 표면 색상을 평가하기위한 직경 8 mm, 두께 5 mm의 시편을 제작하고, Sof-Lex finishing & polishing system (3M, ESPE Dental Products, St. Paul, USA)의 C, M, F 및 SF 디스크로 시편의 한쪽 면을 연마하였으며, 연마 전 Mylar strip으로 압축된 면을 대조군으로 하였다 . 거칠기에 따른 투명도의 차이를 평가하기위한 두께 1 mm의 시편을 Charisma 의 A3로 제작하여, 한쪽 면을 600, 1000. 1500 및 2000번 사포로 연마하였다. 각 시편의 연마 전과 후, 연마면의 CIE $L^{*}a^{*}b^{*}$ 값과 1 mm 시편의 백색과 흑색 배경판 상에서의 Y값을 spectrophotometer 인 Spectrolino (GretagMacbeth, Regensdorf, Switzerland)를 사용해 측정 분석하였으며, 각 시편의 연마 전과 후의 평균 표면 조도 (Ra)값을 Surface Roughness Tester SJ-301 (Mytutoyo, Tokyo, Japan)로 측정했다. $L^{*}$값은 재료와 색상에 상관없이 가장 거친 Sof-lex C 디스크로 연마한 군에서 가장 높은 값을 보였으며 (p < 0.05), Esthet-X B3군을 제외한 모든 군에서 Ra값이 감소함에 따라 $L^{*}$값도 낮아졌다. $a^{*}$값은 표면 거칠기에 따라 특정한 변화양상을 보이지 않았으며, $b^{*}$값은 Esthet-X B1군을 제외한 모든 군에서 Sof-lex SF 디스크로 연마 시 가장 높은 값을 보였으며 (p < 0.05), Charisma B1과 Esthet-X B3군에서 Ra값과 비교적 높은 상관관계를 보였다. Contrast ratio 는 1000번과 1500번 사포로 연마한 군 간을 제외한 모든 군 간에 유의한 차이를 보였으며 (p < 0.05), 표면 거칠기가 감소함에 따라 contrast ratio도 감소하였다 (R2 = 0.801).

The objectives of this study were to evaluate the effect of surface roughness on the surface color and translucency of the composite resins. Two composite resins (Esthet-X, Dentsply, Milford, USA and Charisma, Kulzer, Domagen, Germany) were used to investigate the surface color. Charisma was used to investigate the translucency. 40 disc samples (diameter: 8 mm, thickness: 5 mm) were made by each product to measure the surface color. Polymerized each sample's one side was treated by Sof-Lex finishing and polishing system (Group C, M, F, SF). 40 disc samples (diameter: 6 mm, thickness: 1 mm) were prepared to measure the opacity. 1 mm samples were ground one side with #600, #1000, #1500 and #2000 sandpapers. CIE $L^{*}a^{*}b^{*}$ values of each 5 mm thickness samples, and XYZ values of 1 mm thickness samples on the white and black background were measured with spectrophotometer (Spectrolino, GretagMacbeth, Regensdorf, Switzerland). Mean surface roughness (Ra) of all samples before and after surface treatment was measured using the Surface Roughness Tester SJ-301 (Mytutoyo, Tokyo, Japan). Regardless of type and shade of the composite resin, $L^{*}$ values measured in group C were higher than others (p < 0.05), and $L^{*}$ value decreased as the Ra value decreased except B3 shade of Esthet-X. But there were no significant difference in $a^{*}$ values among groups. In control group and SF, highest $b^{*}$ values were measured (p < 0.05), except B1 shade of Esthet-X. Contrast ratio decreased as the Ra value decreased (p < 0.05). With the above results, difference of surface roughness has influence on surface color and translucency of dental composite resins.

키워드

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피인용 문헌

  1. Surface roughness and color stability of various composite resins vol.32, pp.6, 2007, https://doi.org/10.5395/JKACD.2007.32.6.542
  2. Optical characteristics of resin composite before and after polymerization vol.36, pp.3, 2011, https://doi.org/10.5395/JKACD.2011.36.3.219