Crystallization firing effect on the marginal discrepancy of the IPS. emax CAD crowns using two different CAD/CAM systems
Main Article Content
Abstract
Background: Marginal adaptation is critical for long – term success of crown and bridge restoration. Computer aided design / computer aided manufacture (CAD/ CAM) system is gaining more importance in the fabrication of dental restoration. Objective: The aim of this study is to evaluate the effect of crystallization firing on the vertical marginal gap of IPS. emax CAD crowns which fabricated with two different CAD/CAM systems .Materials and Methods: Twenty IPS e.max CAD crowns were fabricated. We had two major groups (A, B) (10 crowns for each group) according to the CAD/CAM system being used: Group A: fabricated with Imes - Icore CAD/CAM system; Group B: fabricated with In Lab Sirona CAD/CAM system. Each group was subdivided into two subgroups pre-crystallized (Group A1, B1) and crystallized crowns (Group A2, B2). At four points on each aspect of the crown, marginal gaps were assessed on the master metal die by using digital microscope at a magnification of (110X) and image- J program. The measurement was done twice for each crown; before and after crystallization process.Results: The lowest mean of marginal gap before and after crystallization was (29.387±2.774μm) and (70.108±5.569μm) respectively for Group A (Imes - Icore system) and the highest mean value before and after crystallization was (51.728 ±3.774μm) and (84.071 ±4.567μm) respectively for Group B (Sirona system). Paired sample t-test result showed a statistically highly significant difference in marginal gap between all groups.Conclusions: The crystallization process increases the vertical marginal gap. Imes - Icore system showed the lower marginal gap than Sirona system. The two systems have an acceptable marginal gap
Received date: 11-04-2022
Accepted date: 21-05-2022
Downloads
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
Licenses and Copyright
The following policy applies in The Journal of Baghdad College of Dentistry (JBCD):
# JBCD applies the Creative Commons Attribution (CC BY) license to articles and other works we publish. If you submit your paper for publication by JBCD, you agree to have the CC BY license applied to your work. Under this Open Access license, you as the author agree that anyone can reuse your article in whole or part for any purpose, for free, even for commercial purposes. Anyone may copy, distribute, or reuse the content as long as the author and original source are properly cited. This facilitates freedom in re-use and also ensures that JBCD content can be mined without barriers for the needs of research.
# If your manuscript contains content such as photos, images, figures, tables, audio files, videos, etc., that you or your co-authors do not own, we will require you to provide us with proof that the owner of that content (a) has given you written permission to use it, and (b) has approved of the CC BY license being applied to their content. We provide a form you can use to ask for and obtain permission from the owner. If you do not have owner permission, we will ask you to remove that content and/or replace it with other content that you own or have such permission to use.Don't assume that you can use any content you find on the Internet, or that the content is fair game just because it isn't clear who the owner is or what license applies.
# Many authors assume that if they previously published a paper through another publisher, they own the rights to that content and they can freely use that content in their paper, but that’s not necessarily the case, it depends on the license that covers the other paper. Some publishers allow free and unrestricted re-use of article content they own, such as under the CC BY license. Other publishers use licenses that allow re-use only if the same license is applied by the person or publisher re-using the content. If the paper was published under a CC BY license or another license that allows free and unrestricted use, you may use the content in your JBCD paper provided that you give proper attribution, as explained above.If the content was published under a more restrictive license, you must ascertain what rights you have under that license. At a minimum, review the license to make sure you can use the content. Contact that JBCD if you have any questions about the license. If the license does not permit you to use the content in a paper that will be covered by an unrestricted license, you must obtain written permission from the publisher to use the content in your JBCD paper. Please do not include any content in your JBCD paper which you do not have rights to use, and always give proper attribution.
# If any relevant accompanying data is submitted to repositories with stated licensing policies, the policies should not be more restrictive than CC BY.
# JBCD reserves the right to remove any photos, captures, images, figures, tables, illustrations, audio and video files, and the like, from any paper, whether before or after publication, if we have reason to believe that the content was included in your paper without permission from the owner of the content.
How to Cite
Publication Dates
References
Euán, R., Figueras‐Álvarez, O., Cabratosa‐Termes, J., et al Comparison of the marginal adaptation of zirconium dioxide crowns in preparations with two different finish lines. J Prosthodont Impl Esth Recon Dent. 2012; 21(4):291-5. DOI: https://doi.org/10.1111/j.1532-849X.2011.00831.x
Wolfart, S., Wegner, S.M., Al-Halabi, A., et al. Clinical evaluation of marginal fit of a new experimental all-ceramic system before and after cementation. Int J Prosthodont 2003; 16(6):51-55.
Gallucci, G.O., Guex, P., Vinci, D., et al. Achieving natural-looking morphology and surface textures in anterior ceramic fixed rehabilitations. Int J Perio Restor Dent 2007; 27(2):104-10.
Raigrodski, A.J. Contemporary materials and technologies for all-ceramic fixed partial dentures: a review of the literature. J Prosthet Dent 2004; 92(6):557-62. DOI: https://doi.org/10.1016/j.prosdent.2004.09.015
Shen, J.Z., Kosmač, T. Advanced Ceramics for Dentistry: Chapter 16. Advanced Dental-restoration Materials: Concepts for the Future: Elsevier Inc. Chapters; 2013. DOI: https://doi.org/10.1016/B978-0-12-394619-5.00016-X
Stappert, C.F., Att, W., Gerds, T., et al. Fracture resistance of different partial-coverage ceramic molar restorations: An in vitro investigation. JADA 2006; 137(4): 514-22. DOI: https://doi.org/10.14219/jada.archive.2006.0224
Dittmer, M.P., Borchers, L., Stiesch, M., et al. Stresses and distortions within zirconia-fixed dental prostheses due to the veneering process. Acta Biomater. 2009; 5(8): 3231-9. DOI: https://doi.org/10.1016/j.actbio.2009.04.025
Holden, J.E., Goldstein, G.R., Hittelman, E.L., et al. Comparison of the marginal fit of pressable ceramic to metal ceramic restorations. J Prosthodont Imp Esthet Recon Dent. 2009; 18(8): 645-8. DOI: https://doi.org/10.1111/j.1532-849X.2009.00497.x
Holmes, J.R., Bayne, S.C., Holland, G.A., et al. Considerations in measurement of marginal fit. J Prosthet Dent 1989; 62(4): 405-8. DOI: https://doi.org/10.1016/0022-3913(89)90170-4
Bindl, A., Mörmann, W.H. Fit of all-ceramic posterior fixed partial denture frameworks in vitro. nt Int J Periodo Restor Dent 2007;27(6):403-8.
Tinschert. J., Natt, G., Hassenpflug, S., et al. Status of current CAD/CAM technology in dental medicine. Int J Comput Dent 2004; 7(1): 25-45.
Ritter, R.G. Multifunctional Uses of a Novel Ceramic‐Lithium Disilicate. J Esthet Restor Dent 2010; 22(5):332-41. DOI: https://doi.org/10.1111/j.1708-8240.2010.00362.x
Beyari, M.M. Marginal and internal crown fit evaluation of CAD/CAM versus press-laboratory all-ceramic crown. Clin Med Diagnos. 2014; 4(A): 21-6.
Akbar, J.H., Petrie, C.S., Walker, M.P., et al. Marginal adaptation of Cerec 3 CAD/CAM composite crowns using two different finish line preparation designs. J Prosthodont 15(3):155-63.. DOI: https://doi.org/10.1111/j.1532-849X.2006.00095.x
Hamza, T.A., Sherif, R.M. In vitro evaluation of marginal discrepancy of monolithic zirconia restorations fabricated with different CAD-CAM systems. J Prosthet Dent 2017; 117(6): 762-6. DOI: https://doi.org/10.1016/j.prosdent.2016.09.011
Balkaya, M.C., Cinar, A., Pamuk, S. Influence of firing cycles on the margin distortion of 3 all-ceramic crown systems. J Prosthet Dent 2005; 93(4): 55-346. DOI: https://doi.org/10.1016/j.prosdent.2005.02.003
Dimashkieh, M. The Effect of Veneering Porcelain on the Marginal Fit of Cercon Zirconia Copings: Citeseer; 2010.
Al-Assadi, H.Z., Al-Azzawi, A.K.J. The effect of porcelain veneering on marginal fitness of zirconia copings compared to full contour zirconia crown using three different CAD/CAM systems (An In vitro study). J Gene Enviro Resources Conserv. 2015; 3(3): 205-11.
Ibraheem, A.F., Hmedat, S.J. A comparison of vertical marginal fit of three different types of all ceramic crown restorations (An In vitro study). J Gene Environ Resources Conserv. 2015; 3(1): 84-92.
Gonzalo, E., Suarez, M.J., Serrano, B., et al. Marginal fit of Zirconia posterior fixed partial dentures. Int J Prosthodont. 2008; 21(5): 761-6
Khdeir, R.M., Ibraheem, A.F. The Marginal Fitness of CAD/CAM All Ceramic Crowns Constructed by Two Typesof Direct Digitization Techniques (An In Vitro Study). J Bagh Coll Dentitsry 2016; 28(2): 30-3. DOI: https://doi.org/10.12816/0028210
Reich, S., Gozdowski, S., Trentzsch, L., et al. Marginal fit of heat-pressed vs CAD/CAM processed all-ceramic onlays using a milling unit prototype. Oper Dent 2008; 33(6): 644-50. DOI: https://doi.org/10.2341/07-162
van Steenberghe, D., Naertm, I., Andersson, M., et al. A custom template and definitive prosthesis allowing immediate implant loading in the maxilla: a clinical report. Int J Oral Maxillofac Implants. 2002; 17(5): 622-9
Komine, F., Iwai, T., Kobayashi, K., et al. Marginal and internal adaptation of zirconium dioxide ceramic copings and crowns with different finish line designs. Dent Mater 2007; 26(5): 659-64. DOI: https://doi.org/10.4012/dmj.26.659
Vigolo, P., Fonzi, F. An In Vitro Evaluation of Fit of Zirconium‐Oxide‐Based Ceramic Four‐Unit Fixed Partial Dentures, Generated with Three Different CAD/CAM Systems, before and after Porcelain Firing Cycles and after Glaze Cycles. J Prosthodont. 2008; 17(8): 621-6. DOI: https://doi.org/10.1111/j.1532-849X.2008.00366.x
Kim, J-H., Oh, S., Uhm, S-H. Effect of the crystallization process on the marginal and internal gaps of lithium disilicate CAD/CAM crowns. Biomed Res Int. 2016; 20(16): 623-30. DOI: https://doi.org/10.1155/2016/8635483
Azarbal, A., Azarbal, M., Engelmeier, R.L., et al. Marginal Fit Comparison of CAD/CAM Crowns Milled from Two Different Materials. J Prosthodont 2018; 27: 421-8. DOI: https://doi.org/10.1111/jopr.12683
Giordano, R. Materials for chairside CAD/CAM–produced restorations. JADA 2006; 137: 14S-21S DOI: https://doi.org/10.14219/jada.archive.2006.0397
Comlekoglu, M., Dundar, M., Özcan, M., et al. Influence of cervical finish line type on the marginal adaptation of zirconia ceramic crowns. Oper Dent. 2009; 34(5): 586-92. DOI: https://doi.org/10.2341/08-076-L
DeLong, R., Heinzen, M., Hodges, J., et al. Accuracy of a system for creating 3D computer models of dental arches. Dent Res J. 2003; 82(6): 438-42. DOI: https://doi.org/10.1177/154405910308200607
Beuer, F., Korczynski, N., Rezac, A., et al. Marginal and internal fit of zirconia based fixed dental prostheses fabricated with different concepts. Clin Cosm Investig Dent. 2010; 2:(5): 485-93. DOI: https://doi.org/10.2147/CCIDE.S6691
Bosch, G., Ender, A., Mehl, A. A 3-dimensional accuracy analysis of chairside CAD/CAM milling processes. J Prosthet Dent. 2014; 112(6):1425-31. DOI: https://doi.org/10.1016/j.prosdent.2014.05.012
Neves, F.D., Prado, C.J., Prudente, M.S., et al. Micro-computed tomography evaluation of marginal fit of lithium disilicate crowns fabricated by using chairside CAD/CAM systems or the heat-pressing technique. J Prosthet Dent. 2014; 112(5): 1134-40. DOI: https://doi.org/10.1016/j.prosdent.2014.04.028