Dentistry

Hans-Christoph Lauer

Publications

• Research Article
  Scanning Electron Microscope Analysis of Cad/Cam Titanium Implant Abutments Versus Gold-Cast Ucla Abutments
  Author(s): Ali-Reza Ketabi, Sandra Ketabi, B Helmstädter, Hans-Christoph Lauer and Martin BrennerAli-Reza Ketabi, Sandra Ketabi, B Helmstädter, Hans-Christoph Lauer and Martin Brenner
  
  Purpose: The objective of the study was to investigate one-piece CAD/CAM abutments made of titanium and gold-cast UCLA-type abutments for contamination, processing marks and microgaps via scanning electron microscope.Material and Methods: Three groups with five identical abutments each were examined with a scanning electron microscope (LEO 1530 VP; Oberkochen, Germany) after cleaning using a steam jet and ethanol. Group 1 included custom CAD/CAM abutments (Atlantis™; Dentsply Implants, Mölndal, Sweden). Group 2 included UCLA-type cast bases prior to casting (Astra Tech Cast Design 4.5; Dentsply Implants). Group 3 included the identical cast bases with a cast-on abutment (gold alloy).Results: Contaminants were found on all abutments of group 1, on 3 of 5 samples in group 2 and on 1 of 5 samples in group 3. Proces.. View More»
  DOI: 10.4172/2161-1122.1000484

  Abstract PDF