Correlation between Cutometer and Quantitative Evaluation Using Moire Topography in Age-related Skin Elasticity

Morie Topography를 이용한 피부 탄력 평가와 Cutometer 결과와의 상관성 연구

  • Ahn, Sung-Yeon (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Bae, Ji-Hyun (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Kim, Seung-Hun (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Lee, Hae-Kwang (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Moon, Seong-Joon (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Chang, Ih-Seop (Skin Research Institute, Amorepacific Corporation R&D Center) ;
  • Lee, Ok-Sub (Skin Research Institute, Amorepacific Corporation R&D Center)
  • 안성연 (태평양기술연구원 피부과학연구소) ;
  • 배지현 (태평양기술연구원 피부과학연구소) ;
  • 김승훈 (태평양기술연구원 피부과학연구소) ;
  • 이해광 (태평양기술연구원 피부과학연구소) ;
  • 문성준 (태평양기술연구원 피부과학연구소) ;
  • 장이섭 (태평양기술연구원 피부과학연구소) ;
  • 이옥섭 (태평양기술연구원 피부과학연구소)
  • Published : 2005.12.31

Abstract

As aging occurs, ow skin gets more wrinkles, becomes drier and loses its elasticity. Validating the evaluation of skin elasticity is especially important, because it is not as visible as other signs of aging such as wrinkles. Here, we identified the correlation between age and the Parameters given by Cutometer, and (we present) the parameters of that reflect the decreases in skin elasticity along with ages (Ur/Uf, Ua/Uf, Ur/Ue, Ua, $r=0.687{\sim}0.725$). Also we developed an evaluation method to quantify the difference of skin by viewing or touching. A five-grade standard of Moire topographic photo scale on face was prepared using sensory evaluation of 20 to 61 year - old women. Based on this photo standard, scoring was performed using (a) 5-grade system by three specialists to obtain the consensus score. Significant negative correlations between age and results of Cutometer $(r=-0.687{\sim}-0.725)$, Moire topography scores (r=-938) were found. Finally we have shown the significance of the correlation between the result of Cutometer and the score of Moire topography (r=0.711). Our studies using Moire topography on face have confirmed that instrumental measurements reflect the decrease in shin elasticity, which is perceived visually.

나이가 들어감에 따라 피부에 주름이 생기고 건조해지며 탄력이 감소하게 된다. 피부 탄력은 주름과 같은 다른 변화항목처럼 노화에 따른 변화를 극명하게 눈으로 확인하기 힘들어 평가 방법에 타당성을 부여하는 과정이 더욱 중요하다. 본 연구에서는 연령과 기기측정 결과인 Cutometer parameters 값 간의 상관관계를 확인하였으며, 각각의 parameters가 노화에 의한 피부 탄력 감소를 반영해준다는 사실을 확인하였다(Ur/Uf, Ur/Uf, Ur/Ue, Ua, $r=0.687{\sim}0.725)$. 또한 눈으로 보여지는 변화와 직접 피부를 만져보았을 때 느껴지는 변화를 정량평가하기 위한 평가법을 개발하였다. 50명의 건강한 여성을 대상으로 얼굴 부위에서 Moire 사진을 획득하였으며 이중 피부 탄력을 설명해줄 수 있는 다섯 단계의 Moire topographic photo scale을 선정하였다. 그 다음 동일한 조건으로 $20{\sim}61$세의 여성을 대상으로 Moire 사진을 촬영하고, 제시된 scale을 기준으로 피부 탄력정도를 평가하였다. 본 연구결과, Cutometer를 이용한 기기평가$(r=-0.687{\sim}-0.725)$와 Moire topography score (r=-938)에 의한 결과는 연령과 매우 높은 음의 상관관계를 가짐을 확인할 수 있었다. 또한 Cutometer 값과 Moire topography 점수간의 상관성도 비교 두 평가법 간의 상관관계가 높음을 알 수 있었다(r=0.711). 따라서 안면부 Moire topography를 이용한 평가는 기기측정으로 확인할 수 있었던 피부 탄력 변화를 시각적으로 나타내어 줄 수 있었다.

Keywords

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