Comparison of prosthetic models produced by traditional and additive manufacturing methods
2
조회
0
다운로드
9
인용
0
참고문헌
키워드
초록
PURPOSE. The purpose of this study was to verify the clinical-feasibility of additive manufacturing by comparing the accuracy of four different manufacturing methods for metal coping: the conventional lost wax technique (CLWT); subtractive methods with wax blank milling (WBM); and two additive methods, multi jet modeling (MJM), and micro-stereolithography (Micro-SLA). MATERIALS AND METHODS. Thirty study models were created using an acrylic model with the maxillary upper right canine, first premolar, and first molar teeth. Based on the scan files from a non-contact blue light scanner (Identica; Medit Co. Ltd., Seoul, Korea), thirty cores were produced using the WBM, MJM, and Micro-SLA methods, respectively, and another thirty frameworks were produced using the CLWT method. To measure the marginal and internal gap, the silicone replica method was adopted, and the silicone images obtained were evaluated using a digital microscope (KH-7700; Hirox, Tokyo, Japan) at 140X magnification. Analyses were performed using two-way analysis of variance (ANOVA) and Tukey post hoc test (α=.05). RESULTS. The mean marginal gaps and internal gaps showed significant differences according to tooth type (P<.001 and P<.001, respectively) and manufacturing method (P<.037 and P<.001, respectively). Micro-SLA did not show any significant difference from CLWT regarding mean marginal gap compared to the WBM and MJM methods. CONCLUSION. The mean values of gaps resulting from the four different manufacturing methods were within a clinically allowable range, and, thus, the clinical use of additive manufacturing methods is acceptable as an alternative to the traditional lost wax-technique and subtractive manufacturing.
Abstract
PURPOSE. The purpose of this study was to verify the clinical-feasibility of additive manufacturing by comparing the accuracy of four different manufacturing methods for metal coping: the conventional lost wax technique (CLWT); subtractive methods with wax blank milling (WBM); and two additive methods, multi jet modeling (MJM), and micro-stereolithography (Micro-SLA). MATERIALS AND METHODS. Thirty study models were created using an acrylic model with the maxillary upper right canine, first premolar, and first molar teeth. Based on the scan files from a non-contact blue light scanner (Identica; Medit Co. Ltd., Seoul, Korea), thirty cores were produced using the WBM, MJM, and Micro-SLA methods, respectively, and another thirty frameworks were produced using the CLWT method. To measure the marginal and internal gap, the silicone replica method was adopted, and the silicone images obtained were evaluated using a digital microscope (KH-7700; Hirox, Tokyo, Japan) at 140X magnification. Analyses were performed using two-way analysis of variance (ANOVA) and Tukey post hoc test (α=.05). RESULTS. The mean marginal gaps and internal gaps showed significant differences according to tooth type (P<.001 and P<.001, respectively) and manufacturing method (P<.037 and P<.001, respectively). Micro-SLA did not show any significant difference from CLWT regarding mean marginal gap compared to the WBM and MJM methods. CONCLUSION. The mean values of gaps resulting from the four different manufacturing methods were within a clinically allowable range, and, thus, the clinical use of additive manufacturing methods is acceptable as an alternative to the traditional lost wax-technique and subtractive manufacturing.
참고문헌 (29)
- Miyazaki T, "A review of dental CAD", CAM: current status and future perspectives from 20 years of experience, 2009, pp.28, 44~56
- Abduo J, "Trends in computer-aided manufacturing in prosthodontics: a review of the available streams", Int J Dent, 2014, pp.783948~ (2014)
- Colpani JT, "Evaluation of marginal and internal fit of ceramic crown copings", Dent Mater, 29, pp.174~180 (2013)
- Chuchai Anunmana, "Gap comparison between single crown and three-unit bridge zirconia substructures", The Journal of Advanced of Prosthodontics, 6(4), pp.253~258 (2014), 대한치과보철학회[DOI]
- Tamac E, "Clinical marginal and internal adaptation of CAD", CAM milling, laser sintering, and cast metal ceramic crowns, 2014, pp.112, 909~913
- Almeida e Silva JS, "Marginal and internal fit of four-unit zirconia fixed dental prostheses based on digital and conventional impression techniques", Clin Oral Investig, 18, pp.515~523 (2014)
- 송태진, "Marginal fit of anterior 3-unit fixed partial zirconia restorations using different CAD", CAM systems, 2013, pp.5(3), 219~225[DOI]
- Srikakula NK, "Comparision of marginal fit of zirconium oxide copings generated using four different CAD-CAM systems-an in vitro study", J Res Adv Dent, 3, pp.163~171 (2014)
- Sailer I, "Five-year clinical results of zirconia frameworks for posterior fixed partial dentures", Int J Prosthodont, 20, pp.383~388 (2007)
- Bornemann G, "Innovative method for the analysis of the internal 3D fitting accuracy of Cerec-3crowns", Int J Comput Dent, 5, pp.177~182 (2002)
- Stanojevic M, "Advanced investigation on rapid prototyping techniques in maxillofacial surgery and implanting preparation", J Technol Plast, 39, pp.11~20 (2014)
- Snyder TJ, "3D systems’ technology overview and new applications in manufacturing, engineering, science, and education free access", 3D Pr Addit Manuf, 1, pp.169~176 (2014)
- Sachs C, "Full-arch prostheses from translucent zirconia: accuracy of fit", Dent Mater, 30, pp.817~823 (2014)
- Quante K, "Marginal and internal fit of metal-ceramic crowns fabricated with a new laser melting technology", Dent Mater, 24, pp.1311~1315 (2008)
- Kim KB, "An evaluation of marginal fit of three-unit fixed dental prostheses fabricated by direct metal laser sintering system", Dent Mater, 29, pp.e91~e96 (2013)
- Örtorp A, "The fit of cobalt-chromium three-unit fixed dental prostheses fabricated with four different techniques: a comparative in vitro study", Dent Mater, 27, pp.356~363 (2011)
- Kim KB, "In vitro evaluation of marginal and internal adaptation of three-unit fixed dental prostheses produced by stereolithography", Dent Mater J, 33, pp.504~509 (2014)
- Huang Z, "Clinical Marginal and Internal Fit of Crowns Fabricated Using Different CAD", CAM Technologies, 2015, pp.24, 291~295
- Kokubo Y, "Clinical marginal and internal gaps of Procera AllCeram crowns", J Oral Rehabil, 32, pp.526~530 (2005)
- Nakamura T, "In vitro fitting accuracy of copy-milled alumina cores and all-ceramic crowns", Int J Prosthodont, 13, pp.189~193 (2000)
- Beuer F, "Marginal and internal fits of fixed dental prostheses zirconia retainers", Dent Mater, 25, pp.94~102 (2009)
- Pelekanos S, "Micro-CT evaluation of the marginal fit of different In-Ceram alumina copings", Eur J Esthet Dent, 4, pp.278~292 (2009)
- Neves FD, "Microcomputed tomography evaluation of marginal fit of lithium disilicate crowns fabricated by using chairside CAD", CAM systems or the heat-pressing technique, 2014, pp.112, 1134~1140
- Laurent M, "Clinical evaluation of the marginal fit of cast crowns-validation of the silicone replica method", J Oral Rehabil, 35, pp.116~122 (2008)
- Fransson B, "The fit of metal-ceramic crowns, a clinical study", Dent Mater, 1, pp.197~199 (1985)
- McLean JW, "The estimation of cement film thickness by an in vivo technique", Br Dent J, 131, pp.107~111 (1971)
- Belser UC, "Fit of three porcelain-fused-to-metal marginal designs in vivo: a scanning electron microscope study", J Prosthet Dent, 53, pp.24~29 (1985)
- Beuer F, "Marginal fit of 14-unit zirconia fixed dental prosthesis retainers", J Oral Rehabil, 36, pp.142~149 (2009)
- Boening KW, "Clinical fit of Procera AllCeram crowns", J Prosthet Dent, 84, pp.419~424 (2000)