Comparison of marginal fi t of zirconia copings manufactured with the use of two CAD/CAM systems Cerec InLab (Sirona®) CAD/CAM Zirkonzahn (Zirkonzahn®) and Zirkograph 025 ECO pantographic system (manual milling system) (Zirkonzahn®)

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Publicado: nov 5, 2015
DOI: https://doi.org/10.1016/j.rodmex.2015.10.014

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María José Jiménez Suárez
Fernando Sandoval Vernimmen
Estefanía Alexandra Rodríguez Merchán

Resumen

Objective: To compare marginal fi t of zirconia copings manufactured following two different systems: CAD/CAM Cerec InLab (Sirona®) and Zirkonzahn (Zirkonzahn®) as well as a Zirkograph 025 ECO (Zirkonzahn®) pantograph system. Material and methods: A master Cr-Co model stump was manufactured; it was prepared for the zirconia crown of an upper premolar. Ten zirconia copings were manufactured for each group following manufacturer’s instructions. Control group consisted on ten metallic copings. A replication technique was followed using elite HD+ polyvinyl siloxane
(Zhermack®). Measurements were taken using a stereomicroscope at 50x magnifi cation so as to obtain marginal width in microns and thus determine absolute marginal discrepancy of each coping. Statistical analysis was conducted using IBM SPSS® software. T-test study was conducted in order to compare obtained data. Results:
Mean marginal absolute discrepancy and marginal width were
as follows: 92.14 ± 38.59 and 78.62 ± 31.33 μm for Cerec InLab (Sirona®) CAD/CAM system, 38.71 ± 12.62 and 36.91 ± 13.56 μm for Zirkonzahn (Zirkonzahn®) CAD/CAM system, 77.92 ± 38.01 and 69.42 ± 33.23 μm for Zirkograph 025 ECO (Zirkonzahn®) pantograph system. Control group made of metal copings exhibited 44.11 ± 15.36 and 43.74 ± 15.70 μm. With respect to absolute marginal discrepancy and marginal width, significant differences were observed when comparing Cerec InLab (Sirona®) and Zirkograph 025
ECO (Zirkonzahn®) with control group. Nevertheless, no signifi cant differences were observed between Zirkonzahn (Zirkonzahn®) CAD/CAM system and the control group. Overall level of statistical signifi cance was p > 0.001. Conclusions: Zirkonzahn® CAD/CAM system was the most accurate system of all. CAD/CAM Cerec InLab system (Sirona®) proved to be the less precise system.

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Jiménez Suárez, M. J., Sandoval Vernimmen, F., & Rodríguez Merchán, E. A. (2015). Comparison of marginal fi t of zirconia copings manufactured with the use of two CAD/CAM systems Cerec InLab (Sirona®) CAD/CAM Zirkonzahn (Zirkonzahn®) and Zirkograph 025 ECO pantographic system (manual milling system) (Zirkonzahn®). Revista Odontológica Mexicana Órgano Oficial De La Facultad De Odontología UNAM, 19(4). https://doi.org/10.1016/j.rodmex.2015.10.014
Biografía del autor/a

María José Jiménez Suárez

Coordinación de publicaciones.

Editora de la Revista Ódontológica Mexicana. Órgano Oficial de la Facultad de Odontología, UNAM.

Licencia Creative Commons
Revista Odontológica Mexicana por Universidad Nacional Autónoma de México se distribuye bajo una Licencia Creative Commons Atribución-NoComercial-SinDerivar 4.0 Internacional.
Basada en una obra en http://revistas.unam.mx/index.php/rom.