Journal of Technologic Dentistry (대한치과기공학회지)

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

DOI QR Code

Evaluation the clinical acceptability of the marginal and internal gaps of fixed partial denture fabricated with additive manufacturing technology

적층 가공방식에 따른 고정성 치과보철물의 변연 및 내면 적합도 평가연구

  • Kim, Jae-Hong (Department of Dental Technology, Dongnam Health University) ;
  • Kim, Ki-Baek (Department of Dental Lab Technology, Daejeon Health Institute of Technology)
  • 김재홍 (동남보건대학교 치기공과) ;
  • 김기백 (대전보건대학교 치기공과)
  • Received : 2018.07.31
  • Accepted : 2018.12.07
  • Published : 2018.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: The purpose of this study was to evaluate the clinical acceptability of the marginal and internal gap of Co-Cr metal copings fabricated with stereolithography (SLA). Methods: Titanium master dies were milled after scanning of the prepared tooth (n=30). For group I, Co-Cr metal copings were made from conventional lost-wax technique(LWT, n=10). For group II, the master dies were scanned and designed with CAD system. Then, metal copings were milled with Co-Cr(SUB, n=10). For group III(ADD, n=10), the scanning and design procedures were same as group II and burn-out resins were fabricated with SLA device. The marginal and internal discrepancies were measured under an optical microscope(100x) on ten reference points and were statistically analyzed with one-way ANOVA(${\alpha}=.05$). Results: The mean total discrepancies were $53.76{\pm}12.42{\mu}m$ in the LWT group and $69.82{\pm}15.48{\mu}m$ in the ADD group. The SUB group showed the largest total mean value $110.33{\pm}13.77{\mu}m$. There was statistically significant difference between the SUB and the other groups(P<0.05). Conclusion : Co-Cr metal copings fabricated with SLA technology showed clinically acceptable value on marginal and internal gap and there was no statistically significant difference between conventional lost-wax technique and SLA.

Keywords

CGKGBM_2018_v40n4_209_f0001.png 이미지

Figure 1. Milled titanium master model

CGKGBM_2018_v40n4_209_f0002.png 이미지

Figure 2. Ten reference points for measurement

CGKGBM_2018_v40n4_209_f0003.png 이미지

Figure 3. Measurement of gaps at margin and internal gaps by optical microscope (magnification x100).

Table 1. Composition of the experimental groups

CGKGBM_2018_v40n4_209_t0001.png 이미지

Table 2. Mean±SD in(㎛) of gaps for total measurement points of the three production method

CGKGBM_2018_v40n4_209_t0002.png 이미지

References

  1. Azari A, Nikzad S. The evolution of rapid prototyping in dentistry: a review. Rapid Prototyp J, 15, 216-225, 2009. https://doi.org/10.1108/13552540910961946
  2. Bill JS, Reuther JF, Dittmann W, Kubler N, Meier JL, Pistner H, et al. Stereolithography in oral and maxillofacial operation planning. International Journal of Oral and Maxillofacial Surgery, 24, 98-103, 1995. https://doi.org/10.1016/S0901-5027(05)80869-0
  3. Borba M, Cesar PF, Griggs JA, Della Bona A. Adaptation of all-ceramic fixed partial dentures. Dent Mater, 27, 1119-1126, 2011. https://doi.org/10.1016/j.dental.2011.08.004
  4. Gateno J, Allen ME, Teichgraeber JF, Messersmith ML. An in vitro study of the accuracy of a new protocol for planning distraction osteogenesis of the mandible. Journal of Oral and Maxillofacial Surgery, 58, 985-990, 2000. https://doi.org/10.1053/joms.2000.8740
  5. Kim KB, Kim JH, Kim WC, Kim HY, Kim JH. Evaluation of the marginal and internal gap of metal-ceramic crown fabricated with a selective laser sintering technology: twoand three-dimensional replica techniques. J Adv Prosthodont, 5, 179-186, 2013. https://doi.org/10.4047/jap.2013.5.2.179
  6. 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, e91-96, 2013.
  7. McLean JW, von Fraunhofer JA. The estimation of cement film thickness by an in vivo technique. Br Dent J, 131, 107-111, 1971. https://doi.org/10.1038/sj.bdj.4802708
  8. Paniz G, Stellini E, Meneghello R, Cerardi A, Gobbato EA, Bressan E. The precision of fit of cast and milled full-arch implantsupported restorations. Int J Oral Maxillofac Implants, 28, 687-693, 2013. https://doi.org/10.11607/jomi.2990
  9. Petzold R, Zeilhofer HF, Kalender WA. Rapid protyping technology in medicine-basics and applications. Comput Med Imaging Graph, 23, 277-284, 1999. https://doi.org/10.1016/S0895-6111(99)00025-7
  10. Quante K, Ludwig K, Kern M. Marginal and internal fit of metal-ceramic crowns fabricated with a new laser melting technology. Dent Mater, 24, 1311-1315, 2008. https://doi.org/10.1016/j.dental.2008.02.011
  11. Sorensen JA. A standardized method for determination of crown margin fidelity. J Prosthet Dent, 64, 18-24, 1990. https://doi.org/10.1016/0022-3913(90)90147-5
  12. Taft RM, Kondor S, Grant GT. Accuracy of rapid prototype models for head and neck reconstruction. J Prosthet Dent, 106, 399-408, 2011. https://doi.org/10.1016/S0022-3913(11)60154-6
  13. Ucar Y, Akova T, Akyil MS, Brantley WA. Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: Laser-sintered Co-Cr crowns. The Prosthet Dent, 102, 253-259, 2009. https://doi.org/10.1016/S0022-3913(09)60165-7
  14. Werrstein F, Sailer I, Roos M, Hammerle CH. Clinical study of the internal gaps of zirconia and metal frameworks for fixed partial dentures. Eur J Oral Sci, 116, 272-279, 2008. https://doi.org/10.1111/j.1600-0722.2008.00527.x
  15. Winder J, Bibb R. Medical Rapid Prototyping Technologies: State of the Art and Current Limitations for Application in Oral and Maxillofacial Surgery. Journal of Oral and Maxillofacial Surgery, 63, 1006-1015, 2005. https://doi.org/10.1016/j.joms.2005.03.016
  16. Yan X, Gu P. A review of rapid prototyping technologies and systems. Computer-Aided Design, 28, 307-318, 1996. https://doi.org/10.1016/0010-4485(95)00035-6