Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지
DOI QR코드

DOI QR Code

Colorimetric Analysis of Preformed Zirconia Anterior Crowns for Esthetic Restoration

심미수복용 기성 지르코니아 크라운의 색조 평가

  • Lee, Changkeun (Department of Pediatric Dentistry and Institute of Oral Bioscience, Shool of Dentistry, Chonbuk National University) ;
  • Park, Kibong (Department of Pediatric Dentistry and Institute of Oral Bioscience, Shool of Dentistry, Chonbuk National University) ;
  • Yang, Yeonmi (Department of Pediatric Dentistry and Institute of Oral Bioscience, Shool of Dentistry, Chonbuk National University) ;
  • Lee, Daewoo (Department of Pediatric Dentistry and Institute of Oral Bioscience, Shool of Dentistry, Chonbuk National University) ;
  • Kim, Jaegon (Department of Pediatric Dentistry and Institute of Oral Bioscience, Shool of Dentistry, Chonbuk National University)
  • 이창근 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 박기봉 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이대우 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소)
  • Received : 2019.03.19
  • Accepted : 2019.04.30
  • Published : 2019.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to identify which combination of zirconia crowns and cements is most similar in color to the maxillary primary incisors by varying the color of zirconia crowns, crown thickness, and shade of cements. Prefabricated zirconia crowns in 3 shades and crowns fabricated using 6 types of zirconia blocks were used in this study. These were filled with A2-shade or translucent-shade resin cement and the $L^*$, $a^*$, and $b^*$ values were calculated using a spectrophotometer. The color differences between the natural teeth and the zirconia crowns were assessed. The shade of the final restoration was more similar to that of the natural teeth using A2-shade than translucent-shade resin cement. Application of A2-shade cement to a 0.5-mm-thick crown fabricated from a smile series 2 zirconia block resulted in the color most similar to that of the natural teeth. A2-shade resin cement is recommended for zirconia crown restoration in anterior primary teeth compared to TR-shade resin cement for more esthetic restoration. Since restorations with Nu-smile zirconia crowns were not esthetically favorable in terms of shade, improvement of the shade characteristics of the product or development of a new kind of zirconia crown is required.

이 연구의 목적은 지르코니아 크라운의 종류 및 두께와 시멘트 종류에 따른 색조를 평가하여 상악 유중절치와 가장 유사한 조합을 확인하는 것이었다. 시중에 유통되는 3가지 색조의 기성 지르코니아 크라운과 6종류의 지르코니아 블럭을 이용해 제작한 크라운이 연구에 사용되었고, A2 shade 또는 translucent shade의 레진 시멘트로 크라운 내면을 충전하였다. 분광 광도계를 이용하여 각 시편의 $L^*$, $a^*$, $b^*$ 값을 평가하여, 자연치와 지르코니아 크라운의 색 차이(ΔEn)를 평가하였다. 시편의 색조는 translucent-shade 레진시멘트를 사용했을 때 보다 A2-shade 레진시멘트를 사용하였을 때 더욱 자연치와 유사하였고, smile series 2 (SmS2) 지르코니아 블록으로 0.5 mm 두께의 크라운을 제작하여 A2-shade 레진시멘트로 채웠을 때 가장 자연치와 색 차이가 가장 작았다. 한국 어린이들의 상악 유전치부를 지르코니아 크라운으로 수복할 때, translucent-shade의 레진시멘트 보다는 A2-shade의 레진시멘트를 사용하는 것이 권장되고, 기성 지르코니아 크라운은 색조면에서 심미성이 충분하지 못하기 때문에 기성 지르코니아 크라운의 색조 개선이나 새로운 종류의 지르코니아 크라운의 개발이 필요하다.

Keywords

References

  1. Kaya G : Production and characterization of self-colored dental zirconia blocks. Ceram Int, 39:511-517, 2013. https://doi.org/10.1016/j.ceramint.2012.06.056
  2. Bae TS : Properties of dental CAD/CAM zirconia. J Korean Dent Assoc, 49:260-264, 2011.
  3. Capa N, Tuncel I, Tak O, Usumez A : The effect of luting cement and titanium base on the final color of zirconium oxide core material. J Prosthodont, 26:136-140, 2017. https://doi.org/10.1111/jopr.12377
  4. Yi SS, Jang JH, Kim JG, et al. : Color distribution analysis of maxillary primary central incisors using a spectrophotometer. J Korean Acad Pediatr Dent, 46:93-100, 2019.
  5. Kalantari MH, Ghoraishian SA, Mohaghegh M : Evaluation of accuracy of shade selection using two spectrophotometer systems: Vita Easyshade and Degudent Shadepilot. Eur J Dent, 11:196-200, 2017. https://doi.org/10.4103/ejd.ejd_195_16
  6. Karaca S, Ozbay G, Kargul B : Primary zirconia crown restorations for children with early childhood caries. Acta Stomatol Croat, 47:64-71, 2013. https://doi.org/10.15644/asc47/1/6
  7. Manicone PF, Rossi Iommetti P, Raffaelli L : An overview of zirconia ceramics: basic properties and clinical applications. J Dent, 35:819-826, 2007. https://doi.org/10.1016/j.jdent.2007.07.008
  8. Yuan K, Sun X, Chen JH, et al. : In vitro and in vivo evaluations of three computer-aided shade matching instruments. Oper Dent, 37:219-227, 2012. https://doi.org/10.2341/1559-2863-37.3.219a
  9. Hyun HK : A study of the colors of the anterior primary resin teeth. J Korean Acad Pediatr Dent, 34:639-645, 2007.
  10. Oh MH, Kim DE, Lee KH, Ra JY : Study on the colors of primary incisors using digital shade analysing system. J Korean Acad Pediatr Dent, 33:429-437, 2006.
  11. Baik BJ, Oh KS, Kim JG, Yang CH : The comparative study on the color of the deciduous teeth and restorative materials. J Korean Acad Pediatr Dent, 29:376-381, 2002.
  12. Lee EJ : Colorimetric evaluation of zirconia crowns for anterior primary teeth. Master thesis, Seoul National University, 1-28, 2015.
  13. Vichi A, Ferrari M, Davidson CL : Color and opacity variations in three different resin-based composite products after water aging. Dent Mater, 20:530-534, 2004. https://doi.org/10.1016/j.dental.2002.11.001
  14. Jose B, King NM : Early childhood caries lesions in preschool children in Kerala, India. Pediatr Dent, 25:594-600, 2003.
  15. Grewal N, Seth R : Comparative in vivo evaluation of restoring severely mutilated primary anterior teeth with biological post and crown preparation and reinforced composite restoration. J Indian Soc Pedod Prev Dent, 26:141-148, 2008. https://doi.org/10.4103/0970-4388.44028
  16. Lee BG, Lee HS, Ju HJ, Oh HW : Dental caries pattern in primary dentition among Korean children. J Korean Acad Oral Health, 38:95-104, 2014. https://doi.org/10.11149/jkaoh.2014.38.2.95
  17. Waggoner WF, Kupietzky A : Anterior esthetic fixed appliances for the preschooler: considerations and a technique for placement. Pediatr Dent, 23:147-150, 2001.
  18. Ram D, Peretz B : Composite crown-form crowns for severely decayed primary molars: a technique for restoring function and esthetics. J Clin Pediatr Dent, 24:257-260, 2000. https://doi.org/10.17796/jcpd.24.4.u1784716nx571p82
  19. Waggoner WF : Restoring primary anterior teeth: updated for 2014. Pediatr Dent, 37:163-170, 2015.
  20. Helpin ML : The open-face steel crown restoration in children. ASDC J Dent Child, 50:34-38, 1983.
  21. Stewart RE, Luke LS, Pike AR : Preformed polycarbonate crowns for the restoration of anterior teeth. J Am Dent Assoc , 88:103-107, 1974. https://doi.org/10.14219/jada.archive.1974.0018
  22. Larsson C, Wennerberg A : The clinical success of zirconia based crowns: a systematic review. Int J Prosthodont, 27:33-43, 2014. https://doi.org/10.11607/ijp.3647
  23. Komine F, Blatz MB, Matsumura H : Current status of zirconia-based fixed restorations. J Oral Sci, 52:531-539, 2010. https://doi.org/10.2334/josnusd.52.531
  24. Walia T, Salami AA, Rashid F, et al. : A randomized controlled trial of three aesthetic full-coronal restorations in primary maxillary teeth. Eur J Paediatr Dent, 15:113-118, 2014. https://doi.org/10.1007/s40368-013-0072-1
  25. Karaca S, Ozbay G, Kargul B : Primary zirconia crown restorations for children with early childhood caries. Acta Stomatol Croatica, 47:64-71, 2013. https://doi.org/10.15644/asc47/1/6
  26. Planells del Pozo P, Fuks AB : Zirconia crowns: an esthetic and resistant restorative alternative for ECC affected primary teeth. J Clin Pediatr Dent, 38:193-195, 2014. https://doi.org/10.17796/jcpd.38.3.0255q84jt2851311
  27. Corciolani G, Vichi A, Louca C, Ferrari M : Influence of layering thickness on the color parameters of a ceramic system. Dent Mater, 26:737-742, 2010. https://doi.org/10.1016/j.dental.2010.03.018
  28. Chang J, Da Silva JD, Ishikawa-Nagai S, et al. : The optical effect of composite luting cement on all ceramic crowns. J Dent, 37:937-943, 2009. https://doi.org/10.1016/j.jdent.2009.07.009
  29. Fazi G, Vichi A, Ferrari M : Influence of four different cements on the colour of zirconia structures of varying ceramic thickness. Int Dent SA, 9:54-61, 2006.
  30. King KA, deRijk WG : Variations of L*a*b* values among Vitapan classical shade guides. J Prosthodont, 16:352-356, 2007. https://doi.org/10.1111/j.1532-849X.2007.00207.x
  31. Ha HS, Lim BS, Rhee SH : Effect of resin cement color on the color of commercially available zirconia crown. Korean J Dent Mater, 45:233-242, 2018. https://doi.org/10.14815/kjdm.2018.45.4.233