Comparative Study of the Cad-Cam Technique vs. The Conventional Technique in the elaboration of Fixed Zirconia Prostheses
DOI:
https://doi.org/10.59471/ijhsc2024121Keywords:
CAD-CAM technique, conventional technique, zirconium fixed prosthesisAbstract
Background: The fabrication of fixed zirconia prostheses has experienced significant advancements with the incorporation of CAD-CAM techniques, but conventional techniques that require lower investment in specialized technology and equipment are also commonly employed. Objective: This article aims to compare CAD-CAM techniques versus conventional techniques in the development of fixed zirconia prostheses. The properties of zirconia in its use for dental restorations are identified, the technique that provides better marginal fit precision and quality in fixed zirconia prostheses is determined, and patient satisfaction regarding the aesthetics and comfort of prostheses fabricated using both techniques is assessed. Methods: A literature review was conducted by reviewing articles published in indexed academic journals within the last 5 years. Specific inclusion and exclusion criteria were applied based on PRISMA statement guidelines, in the identification, screening, eligibility, and inclusion phases. A total of 13 articles that met the quality parameters were ultimately selected. Results: The properties of zirconia oxide can be summarized as good mechanical strength, biocompatibility, aesthetics, wear and corrosion resistance, and dimensional stability. Researchers have concluded that CAD-CAM dental systems have represented a significant advancement in dentistry by providing high-quality fixed dental restorations, as this technology enables the fabrication of structures with a high level of precision. Both CAD-CAM and conventional methods can achieve a satisfactory aesthetic finish in fixed zirconia prostheses, depending on the skill and experience of the practitioner. There is no compelling evidence that one technique alters the properties of zirconium more than others. Conclusions: Although both techniques have their advantages and limitations, it is evident that CAD-CAM technology has demonstrated benefits in various aspects. It allows for better adaptation and fit of zirconia dental prostheses, which can enhance patient comfort and reduce the need for subsequent adjustments
References
Almeida E Silva JS, Erdelt K, Edelhoff D, Araújo É, Stimmelmayr M, Cardoso LC, et al. Marginal and internal fit of four-unit zirconia fixed dental prostheses based on digital and conventional impression techniques. Clin Oral Investig. 2014;18(2):515-23.
Ueda K, Watanabe F, Katsuta Y, Seto M, Ueno D, Hiroyasu K, et al. Marginal and internal fit of three-unit fixed dental prostheses fabricated from translucent multicolored zirconia: Framework versus complete contour design. J Prosthet Dent. 2021;125(2):340.e1-340.e6.
Abduo J. Fit of CAD/CAM Implant Frameworks: A Comprehensive Review. J Oral Implantol. 2014;40(6):758-66.
Naranjo V. Estudio comparativo de la precisión de ajuste marginal de coronas de disilicato de litio y zirconio hechas en CAD/CAM y cerómero por método convencional [Internet] [Tesis de Pregrado]. [Quito, Ecuador]: Unversidad Central del Ecuador; 2022. Disponible en: http://www.dspace.uce.edu.ec/bitstream/25000/28366/1/UCE-FOD-NARANJO%20VALERIA.pdf
Mello C, Lemos C, Gomes J, Verri F, Pellizzer E. CAD/CAM vs Conventional Technique for Fabrication of Implant-Supported Frameworks: A Systematic Review and Meta-analysis of In Vitro Studies. Int J Prosthodont. 2019;32(2):182-92.
Von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP. The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement: Guidelines for reporting observational studies. Int J Surg. 2014;12(12):1495-9.
Yépes J, Urrútia G, Romero M, Alonso S. Declaración PRISMA 2020: una guía actualizada para la publicación de revisiones sistemáticas. Rev Esp Cardiol. 2021;74(9):790-9.
Azpiazu-Flores FX, Lee DJ, Jurado CA, Afrashtehfar KI, Alhotan A, Tsujimoto A. Full-Mouth Rehabilitation of a Patient with Sjogren’s Syndrome with Maxillary Titanium-Zirconia and Mandibular Monolithic Zirconia Implant Prostheses Fabricated with CAD/CAM Technology: A Clinical Report. J Funct Biomater. 2023;14(4):174.
Stimmelmayr M, Groesser J, Beuer F, Erdelt K, Krennmair G, Sachs C, et al. Accuracy and mechanical performance of passivated and conventional fabricated 3-unit fixed dental prosthesis on multi-unit abutments. J Prosthodont Res. 2017;61(4):403-11.
Ha SJ, Cho JH. Comparison of the fit accuracy of zirconia-based prostheses generated by two CAD/CAM systems. J Adv Prosthodont. 2016;8(6):439.
Tasaka A, Shimizu T, Hirabayashi T, Yamashita S. Fabrication of Zirconia Abutment Crown and Clasp Under Existing Removable Partial Denture Using CAD/CAM Technology. Clin Cosmet Investig Dent. 2021;13:421-7.
Uluc IG, Guncu MB, Aktas G, Turkyilmaz I. Comparison of marginal and internal fit of 5-unit zirconia fixed dental prostheses fabricated with CAD/CAM technology using direct and indirect digital scans. J Dent Sci. 2022;17(1):63-9.
Altemimi A, Rodríguez J, Nahon M. A Combined Digital Technique for Manufacturing Functional Fixed Implant Prosthesis Prototypes Using a CAD/CAM Software. J Prosthodont. 2021;31:85-90.
Faeghinejad M, Proussaefs P, AlHelal A, Lozada J. The CAD/CAM Compound Prosthesis: Digital Workflow for Fabricating Cement-Retained Zirconia Prosthesis Over Screw-Retained Milled Titanium Bars. Int J Periodontics Restorative Dent. 2019;39(1):39-47.
Rauch A, Hahnel S, Günther E, Bidmon W, Schierz O. Tooth-Colored CAD/CAM Materials for Application in 3-Unit Fixed Dental Prostheses in the Molar Area: An Illustrated Clinical Comparison. Materials. 2020;13(24):5588.
Schepke U, Meijer HJA, Kerdijk W, Raghoebar GM, Cune M. Stock Versus CAD/CAM Customized Zirconia Implant Abutments - Clinical and Patient-Based Outcomes in a Randomized Controlled Clinical Trial. Clin Implant Dent Relat Res. 2017;19(1):74-84.
Grech J, Antunes E. Zirconia in dental prosthetics: a literature review. J Mater Res Technol. 2019;8(5):4956-64.
Li N, Wu ZK, Jian C, Zhao WQ, Yan JZ. CAD/CAM Zirconia for Dental Application. Appl Mech Mater. 2013;320:505-11.
Nemoto R, Nozaki K, Fukui Y, Yamashita K, Miura H. Effect of framework design on the surface strain of zirconia fixed partial dentures. Dent Mater J. 2013;32(2):289-95.
De Angelis P, Gasparini G, Rella E, Angelis S, Grippaudo C, D’Addona A, et al. Patient Satisfaction with Implant-Supported Monolithic and Partially Veneered Zirconia Restorations. BioMed Res Int. 2021;2021:1-8.
Zarone F, Di Mauro MI, Spagnuolo G, Gherlone E, Sorrentino R. Fourteen-year evaluation of posterior zirconia-based three-unit fixed dental prostheses: A Prospective clinical study of all ceramic prosthesis. J Dent. 2020;101:1-23.
De França DGB, Morais MHST, Das Neves FD, Barbosa GAS. Influence of CAD/CAM on the fit accuracy of implant-supported zirconia and cobalt-chromium fixed dental prostheses. J Prosthet Dent. 2015;113(1):22-8.
Svanborg P. A systematic review on the accuracy of zirconia crowns and fixed dental prostheses. Biomater Investig Dent. 2020;7(1):9-15.
Rabel K, Nold J, Pehlke D, Shen J, Abram A, Kocjan A, et al. Zirconia fixed dental prostheses fabricated by 3D gel deposition show higher fracture strength than conventionally milled counterparts. J Mech Behav Biomed Mater. 2022;135:105456.
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Copyright (c) 2024 Jenny Victoria Manosalvas Tapia, Víctor Hugo Parreño Gallo, Noemi Estefani Morales Morales, Tatiana Lucrecia Pancho Chavarrea (Author)
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