The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지
DOI QR코드

DOI QR Code

Volume difference in upper central incisor preparation according to the changes of restorative design and marginal location

상악 중절치 삭제 시 수복 디자인과 변연부 위치에 따른 부피 변화

  • Kim, Chong-Hyun (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Park, Young-Bum (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Kim, Sung-Tae (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Lee, Keun-Woo (Department of Prosthodontics, College of Dentistry, Yonsei University)
  • 김종현 (연세대학교 치과대학 보철학교실) ;
  • 박영범 (연세대학교 치과대학 보철학교실) ;
  • 김성태 (연세대학교 치과대학 보철학교실) ;
  • 이근우 (연세대학교 치과대학 보철학교실)
  • Received : 2011.04.01
  • Accepted : 2011.04.15
  • Published : 2011.04.29
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: The aim of this study was to evaluate the volumetric change of teeth after preparation for various designs and margin locations through Micro CT analysis (Skyscan 1076: SKYSCAN, Konitch, Belgium). Materials and methods: The 36 artificial teeth were used to determine reduction volume of upper central incisor. According to the restorative design these 36 teeth were divided into 4 groups and according to the marginal location each group was divided into 3 subgroups. The volume of unprepared teeth was obtained by using Micro CT and the volume of prepared teeth was obtained in the same method. The CT scanned images before and after preparation were superimposed. Results: The volume difference was significantly increased as follows: traditional laminate veneer < full laminate veneer < all ceramic crown < metal ceramic crown. One-way ANOVA and Tukey multiple comparison analyses were used to analyze the data in this study. In each group the volume difference was significantly increased as follows: 1 mm above CEJ < CEJ < 1 mm below CEJ (P<.05). The % volume difference of all ceramic crown and metal ceramic crown was 31 - 48% and that of laminate veneer was 14 - 30%. The volume difference of the traditional laminate veneer was 1/3 of that of metal ceramic crown. The full laminate (1 mm below CEJ) and all ceramic crown (1 mm above CEJ) showed a similar volume difference. Metal ceramic crown showed 13.7% more volume difference than all ceramic crown. Conclusion: There exists the difference in volumetric change according to designs of restoration and margin locations of preparation.

연구 목적: 상악 중절치에 여러 가지 수복물 설계와 변연부 위치를 설정하여 치아 삭제를 하였을 때 나타나는 치아 삭제량의 변화를 평가하기 위함이다. 연구 재료 및 방법: 36개의 상악 중절치 레진 인공치가 실험에 사용되었다. 수복물의 디자인에 따라 이들은 4개의 군으로 나뉘었다. 그리고 각각의 군은 다시 변연부의 위치에 따라 3개의 세부 군으로 나뉘었다. 삭제되지 않은 치아의 부피가 미세단층촬영을 이용해 측정되었고 같은 방법으로 삭제 후의 치아의 부피가 측정되었다. 이 측정된 영상들을 서로 겹쳐서 비교함으로 삭제 전과 후의 부피 변화를 알아보았다. 결과: 수복물 설계에 따른 삭제 전과 후의 부피 변화량은 다음과 같은 순서로 변화량의 차이를 보였다: traditional laminate veneer < full laminate veneer < all ceramic crown < metal ceramic crown. One-Way ANOVA와 다중비교 Tukey로 유의수준5%에서 통계 분석한 결과 각각의 군에서는 다음과 같은 순서로 변화량의 차이를 보였다: CEJ 1 mm 상방 < CEJ < CEJ 1 mm 하방 (P<.05). 부피 변화를 백분율로 나타낸 수치를 보면 all ceramic crown과 metal ceramic crown 에서는 31 - 48% 로 나타났고 laminate veneer에서는 14 - 30%로나타났다. Laminate veneer에서 나타난 부피 변화량은 metal ceramic crown의 1/3로 나타났다. The full laminate (CEJ 1 mm 하방)와 all ceramic crown (CEJ 1 mm 상방)는 유사한 부피 변화를 보였다. Metal ceramic crown은 all ceramic crown과 비교하였을 때 13.7% 더 많은 부피 변화를 보였다. 결론: 수복물의 설계와 변연부 위치의 변화에 따라 부피 변화의 차이가 존재한다.

Keywords

References

  1. Edelhoff D, Sorensen JA. Tooth structure removal associated with various preparation designs for anterior teeth. J Prosthet Dent 2002;87:503-9. https://doi.org/10.1067/mpr.2002.124094
  2. Ericson S, Hedegard B, Wennstrom A. Roentgenographic study of vital abutment teeth. J Prosthet Dent 1966;16:981-7. https://doi.org/10.1016/0022-3913(66)90022-9
  3. Schwartz NL, Whitsett LD, Berry TG, Stewart JL. Unserviceable crowns and fixed partial dentures: life-span and causes for loss of serviceability. J Am Dent Assoc 1970;81:1395-401. https://doi.org/10.14219/jada.archive.1970.0398
  4. Doyle MG, Goodacre CJ, Munoz CA, Andres CJ. The effect of tooth preparation design on the breaking strength of Dicor crowns: 3. Int J Prosthodont 1990;3:327-40.
  5. Scherrer SS, de Rijk WG. The fracture resistance of all-ceramic crowns on supporting structures with different elastic moduli. Int J Prosthodont 1993;6:462-7.
  6. Lehner C, Studer S, Brodbeck U, Scharer P. Short-term results of IPS-Empress full-porcelain crowns. J Prosthodont 1997;6:20-30. https://doi.org/10.1111/j.1532-849X.1997.tb00061.x
  7. Sorensen JA, Choi C, Fanuscu MI, Mito WT. IPS Empress crown system: three-year clinical trial results. J Calif Dent Assoc 1998;26:130-6.
  8. Fradeani M, Aquilano A. Clinical experience with Empress crowns. Int J Prosthodont 1997;10:241-7.
  9. Christensen GJ. Has tooth structure been replaced? J Am Dent Assoc 2002;133:103-5. https://doi.org/10.14219/jada.archive.2002.0029
  10. Clyde JS, Gilmour A. Porcelain veneers: a preliminary review. Br Dent J 1988;164:9-14. https://doi.org/10.1038/sj.bdj.4806328
  11. Kress B, Buhl Y, Hahnel S, Eggers G, Sartor K, Schmitter M. Age-and tooth-related pulp cavity signal intensity changes in healthy teeth: a comparative magnetic resonance imaging analysis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007;103:134-7. https://doi.org/10.1016/j.tripleo.2006.04.007
  12. Dumfahrt H, Schaffer H. Porcelain laminate veneers. A retrospective evaluation after 1 to 10 years of service: Part II-Clinical results. Int J Prosthodont 2000;13:9-18.
  13. Ferrari M, Patroni S, Balleri P. Measurement of enamel thickness in relation to reduction for etched laminate veneers. Int J Periodontics Restorative Dent 1992;12:407-13.
  14. Goodacre CJ, Spolnik KJ. The prosthodontic management of endodontically treated teeth: a literature review. Part I. Success and failure data, treatment concepts. J Prosthodont 1994;3:243-50. https://doi.org/10.1111/j.1532-849X.1994.tb00162.x
  15. Crispin BJ. Esthetic moieties: enamel thickness. J Esthet Dent 1993;5:37. https://doi.org/10.1111/j.1708-8240.1993.tb00742.x
  16. Sorensen JA, Munksgaard EC. Relative gap formation adjacent to ceramic inlays with combinations of resin cements and dentin bonding agents. J Prosthet Dent 1996;76:472-6. https://doi.org/10.1016/S0022-3913(96)90003-7
  17. Magne P, Douglas WH. Additive contour of porcelain veneers: a key element in enamel preservation, adhesion, and esthetics for aging dentition. J Adhes Dent 1999;1:81-92.
  18. Jones JC. The success rate of anterior crowns. Br Dent J 1972;132:399-403. https://doi.org/10.1038/sj.bdj.4802852
  19. Wolf JE, Hakala PE, Kolehmainen L, Jarvinen V. A follow-up study of porcelain and acrylic jacket crowns. Proc Finn Dent Soc 1978;74:54-8.
  20. Foster LV. Failed conventional bridge work from general dental practice: clinical aspects and treatment needs of 142 cases. Br Dent J 1990;168:199-201. https://doi.org/10.1038/sj.bdj.4807133
  21. Zarone F, Epifania E, Leone G, Sorrentino R, Ferrari M. Dynamometric assessment of the mechanical resistance of porcelain veneers related to tooth preparation: a comparison between two techniques. J Prosthet Dent 2006;95:354-63. https://doi.org/10.1016/j.prosdent.2006.03.003
  22. Stappert CF, Ozden U, Gerds T, Strub JR. Longevity and failure load of ceramic veneers with different preparation designs after exposure to masticatory simulation. J Prosthet Dent 2005;94:132-9. https://doi.org/10.1016/j.prosdent.2005.05.023
  23. Guess PC, Stappert CF. Midterm results of a 5-year prospective clinical investigation of extended ceramic veneers. Dent Mater 2008;24:804-13. https://doi.org/10.1016/j.dental.2007.09.009
  24. Atsu SS, Aka PS, Kucukesmen HC, Kilicarslan MA, Atakan C. Age-related changes in tooth enamel as measured by electron microscopy: implications for porcelain laminate veneers. J Prosthet Dent 2005;94:336-41. https://doi.org/10.1016/j.prosdent.2005.08.008
  25. Murray PE, Stanley HR, Matthews JB, Sloan AJ, Smith AJ. Age-related odontometric changes of human teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;93:474-82. https://doi.org/10.1067/moe.2002.120974
  26. Peumans M, Van Meerbeek B, Lambrechts P, Vuylsteke-Wauters M, Vanherle G. ive-year clinical performance of porcelain veneers. Quintessence Int 1998;29:211-21.
  27. Morse DR. Age-related changes of the dental pulp complex and their relationship to systemic aging. Oral Surg Oral Med Oral Pathol 1991;72:721-45. https://doi.org/10.1016/0030-4220(91)90019-9