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Digital Shade Analysis System을 이용한 전치부의 색조 특성에 관한 연구



Statement of problem : A scientific examination and understanding of overall aspects of the natural dentition is the first step involved in making a satisfactory selection in the shade of an aesthetic prosthesis. Proper natural shade selection of the prosthetic restoration that is in harmony with the remaining dentition is as important aesthetically, as harmony of form and function in the anterior dentition. Clinically, the most commonly applied method of shade selection has been visual, but because of the subjective nature inherent to this method, shade selection results are variable and can be influenced by such factors as the technician, the type of shade guide used, and the type and intensity of the lighting. Purpose : The purpose of this study was to develop a more objective and scientific approach to examining and understanding the shade of teeth, which has in turn lead to the development of a number of shade analysis devices that present a more objective method of shade analysis. Material and Method : In this study, the shades of healthy anterior teeth were examined and analyzed using the recently developed digital shade analysis of the $ShadeScan^{TM}$ System. The study examined 80 individuals in their twenties, 40 males and 40 females, presenting 6 healthy, unrestored maxillary anterior teeth. Tooth brushing and oral prophylaxis were performed prior to evaluation. The ShadeScan handpiece was used to acquire images of the 6 maxillary anterior teeth. These images were analyzed using the Vita/Classical mode of the $ShadeScan^{TM}$ Software, and shade maps of each tooth were acquired and divided into cervical, middle, and incisal thirds. The shade distribution of each third, left and right symmetry, and gender differences were investigated and analyzed. Results : The results of the study are as follows : 1. An overwhelming majority of the examined teeth were found to possess shades belong to Group A, with the greatest variations occurring at the middle and cervical thirds of the maxillary central and lateral incisors, in both male and female subjects. 2. Canines of both male and female subjects showed left and right symmetry with uniform shade distribution of A4 and C4, while the lateral and central incisors showed left-right symmetry of the incisal 1/3 with a uniform shade distribution of A2 and A3 shades 3. No significant differences in shade distribution were seen between genders in maxillary canines, whereas maxillary central and lateral incisors showed differences at the middle and cervical thirds between male and female subjects The results of this study show that with the exception of maxillary canines, maxillary anterior teeth display a diverse shade distribution as well as gender differences. Conclusion : Clinically, when making a shade selection using the existing shade guide, one must consider the fact that even a single tooth consists of a variety of shades. The results of this study show that when selecting a shade from a number of groups is difficult, shades from A group are the most consistent with the natural shade or maxillary anterior teeth.

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이 논문을 인용한 문헌 (7)

  1. Kim, Bum-Suk ; Shin, Soo-Yeon ; Lee, Jong-Hyuk 2008. "Shade comparative analysis of natural tooth measured by visual and spectrophotometric methods" 대한치과보철학회지 = The journal of Korean academy of prosthodontics, 46(5): 443~454 
  2. Kim, Tae-Jin ; Kwon, Kung-Rock ; Kim, Hyeong-Seob ; Woo, Yi-Hyung 2008. "A Study of the shade of between maxillary and mandibular anterior teeth in the Korean" 대한치과보철학회지 = The journal of Korean academy of prosthodontics, 46(4): 343~350 
  3. Lee, Seung-Taek ; Lee, Jong-Hyuk ; Shin, Soo-Yeon 2009. "Evaluation of shade guide using digital shade analysis system" 대한치과보철학회지 = The journal of Korean academy of prosthodontics, 47(1): 1~11 
  4. Chung, In-Sung ; Lee, Do-Chan 2010. "Effect of Surface Treatments and Glazing Temperatures on Bond Strength and Color Reproducibility in Titanium-Ceramic Prosthesis" 한국콘텐츠학회논문지 = The Journal of the Korea Contents Association, 10(11): 243~250 
  5. Yang, Mi-Seon ; Kim, Seok-Gyu 2011. "Influencing factors on the final color of laminate veneer restorations with various IPS Empress Esthetic$^{(R)}$ ingots" 대한치과보철학회지 = The journal of Korean academy of prosthodontics, 49(4): 308~315 
  6. Huh, Sung-Yoon ; Kim, Jae-Hong ; Son, Ho-Jung 2011. "The study on the color change according to zirconia core thickness, and build-up technique using spectrophotometer" 대한치과기공학회지 = The Journal of Korean academy of dental technology, 33(4): 313~321 
  7. Kang, Hyun-Kyung ; Lim, Hyun-Ju 2012. "The Relation between Korean Traditional Fermented Food and Discoloration on Bleached Tooth" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 13(10): 4717~4724 


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