Fracture strength test of digitally produced ceramic-filled and unfilled dental resin restorations via 3d printing: an in vitro study

• Ansgar-Christian Schulz ^[2] ; Ahmed Othman ^[1] ; Dragan-Alexander Ströbele ^[2] ; Juliane Wagner ^[3] ; Richard Mosch ^[2] ; Constantin von See ^[1]
  1. [1] Danube Private University

     Danube Private University

     Krems an der Donau, Austria

     
  2. [2] Research Center for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria. Steiner Landstraße 124, 3500 Krems, Austria
  3. [3] Department of Oral & Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 15, Nº. 2 (February), 2023, págs. 118-124
• Idioma: inglés
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• Resumen

  • Purpose of this study was to investigate the mechanical efficiency of 3D-printed permanent and provisional implant cemented fixed bridges produced via CAD/CAM technology using an interim and a permanent ceramic filled hybrid material.

    Two groups with twenty specimens each were designed and 3D-printed via digital light processing technology (DLP). A fracture strength test was performed. Statistical analysis was performed (p>0.05) for impression distance and force.

    For the fracture resistance and impression distance no significant difference (p = 0.643) were detected. The specimens of interim resin showed a mean value of 365.90 ± 86.67 N. Whereas specimens of permanent ceramic filled hybrid material showed a mean value of 363.45 ± 87.57 N.

    In this in vitro study 3D-printed ceramic filled hybrid material and interim resin based on methacrylic acid esters showed an acceptable resistance to bite forces with no differences in fracture mechanism.