Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of the marginal and internal fit of lithium disilicate crowns fabricated by different scanning methods

다른 스캐닝 방법으로 제작된 리튬 디실리케이트 단관의 변연 및 내면 적합도 평가

  • Kim, Jae-Hong (Department of Dental Lab. Science & Engineering, College of Health Science, Graduate School, Korea University) ;
  • Kim, Woong-Chul (Department of Dental Lab. Science & Engineering, College of Health Science, Graduate School, Korea University) ;
  • Kim, Ji-Hwan (Department of Dental Lab. Science & Engineering, College of Health Science, Graduate School, Korea University)
  • 김재홍 (고려대학교 일반대학원 보건과학과 치의기공과) ;
  • 김웅철 (고려대학교 일반대학원 보건과학과 치의기공과) ;
  • 김지환 (고려대학교 일반대학원 보건과학과 치의기공과)
  • Received : 2014.04.28
  • Accepted : 2014.06.26
  • Published : 2014.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: This study was to compare adaptations of lithium disilicate CAD/CAM crowns fabricated with different scanning systems. Methods: This study selected the mandibular right first molar as an abutment for experiments and produced 10 working models. Lithium disilicate crowns appropriate for each abutment were produced by using a CEREC$^{(R)}$ CAD/CAM system. The independent t-test was then used to compare and analyze the data obtained from the two groups(${\alpha}$=0.05). Results: Mean(SD) adaptation were $86.93(22.82){\mu}m$ for the InS group, $88.42(26.77){\mu}m$ for the ExS group. They were no statistically significant differences between groups for adaptation(p>0.05). Conclusion: Within the limitations of this study, the results suggest that the accuracy of all investigated optical scanner were satisfactory for clinical use. Further assessment and improvement of the lithium disilicate ceramic for the fabrication of FPDs is evidently still required.

Keywords

References

  1. Bindl A, Mormann WH. Marginal and internal fit of all-ceramic CAD/CAM crown-copings on chamfer preparations. J Oral Rehabil, 32(6), 441-447, 2005. https://doi.org/10.1111/j.1365-2842.2005.01446.x
  2. Bindl A, Mormann WH. Clinical and SEM evaluation of all-ceramic chair-side CAD/CAM generated partial crowns. Eur J Oral Sci, 111(2), 163-169, 2003. https://doi.org/10.1034/j.1600-0722.2003.00022.x
  3. Christensen GJ. Impressions are changing: deciding on conventional, digital or digital plus in-office milling. J Am Dent Assoc, 140(10), 1301-1304, 2009. https://doi.org/10.14219/jada.archive.2009.0054
  4. Colpani JT, Borba M, Della Bona A. Evaluation of marginal and internal fit of ceramic crown copings. Dent Mater, 29(2), 174-180, 2013. https://doi.org/10.1016/j.dental.2012.10.012
  5. Davidowiz G, Kotick PG. The use of CAD/CAM in dentistry. Dent Clin North Am, 55(4), 559-570, 2011. https://doi.org/10.1016/j.cden.2011.02.011
  6. Fransson B, Olio G, Gjeitanger R. The fit of metalceramic crowns, a clinical study. Dent Mater, 1(5), 197-199, 1985. https://doi.org/10.1016/S0109-5641(85)80019-1
  7. Herrguth M, Wichmann M, Reich S. The aesthetics of all-ceramic veneered and monolithic CAD/CAM crowns. J Oral Rehabil, 32(10), 747-752, 2010.
  8. Holmes JR, Bayne SC, Holland GA, Sulik WD. Considerations in measurement of marginal fit. J Prosthet Dent, 62(4), 405-408, 1989. https://doi.org/10.1016/0022-3913(89)90170-4
  9. Jung HK. CEREC inLab system을 이용한 임상응용에 관한 연구. J Korean Acad Dent Tech, 30(2), 165-172, 2008.
  10. Kim KB, Kim WC, Kim HY, Kim JH. An evaluation of marginal fit of three-unit fixed dental prostheses fabricated by direct metal laser sintering system. Dent Mater, 29(7), e91-e96.
  11. McLean JM, von Fraunhofer JA. The estimation of cement film thickness by an in vivo technique. Br Dent J, 131(3), 107-111, 1971. https://doi.org/10.1038/sj.bdj.4802708
  12. Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent Mater J, 28(1), 44-56, 2009. https://doi.org/10.4012/dmj.28.44
  13. Molin M, Karlsson S. The fit of gold inlays and three ceramic inlay systems. A clinical and in vitro study. Acta Odontol Scand, 51(4), 201-206, 1993. https://doi.org/10.3109/00016359309040568
  14. Mormann WH. The evolution of the CEREC system. J Am Dent Assoc, 137(6), 7S-13S, 2006.
  15. Mormann WH, Bindl A. The Cerec 3 - a quantum leap for computer-aided restorations: initial clinical results. Quintessence Int, 31(10), 699-712, 2000.
  16. Rahme HY, Tehini GE, Adib SM, Rifai KT. In vitro evaluation of the "replica technique"in the measurement of the fit of Procera crowns. J Contemp Dent, 9(2), 25-32, 2008.
  17. Rekow ED. High-technology innovations and limitations for restorative dentistry. Dent Clin North Am, 37(3), 513-524, 1993.
  18. Reich S, Gozdowski S, Trentzsch L, Frankenberger R, Lohbauer U. Marginal fit of heat-pressed vs. CAD/CAM processed all-ceramic onlay using a milling unit prototype. Oper Dent, 33(6), 644-650, 2008. https://doi.org/10.2341/07-162
  19. Reich S, Gozdowski S, Lohbauer U. Measurement of cement thickness under lithium disilicate crowns using an impression material technique. Clin Oral Investig, 15(4), 521-526, 2011. https://doi.org/10.1007/s00784-010-0414-x
  20. Tsitrou EA, Northeast SE, Van NR. Evaluation of the marginal fit of three margin designs of resin composite crowns using CAD/CAM. J Dent, 35(1), 68-73, 2007. https://doi.org/10.1016/j.jdent.2006.04.008
  21. Wang H, Liao Y, Chao Y, Liang X. Shrinkage and strength characterization of an aluminaglass interpenetrating phase composite for dental use. Dent Mater, 32(9), 1108-1113, 2009.