Statistical Evaluation of Titanium Metal Base Dentures Used in Vivo

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  • Hosoi Toshio
    Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
  • Ohkubo Chikahiro
    Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
  • Mizuno Yukihiro
    Training Institute of Dental Technician, Tsurumi University School of Dental Medicine
  • Yamazaki Nobuo
    Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
  • Dan Tomoko
    Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine

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Abstract

A review of the statistics and outcomes related to the use of titanium dentures used at the Tsurumi University Dental Hospital between 1992 and 1998 was previously reported. This report contains details of the evaluation of the use of titanium dentures between 1999 and 2007.<br>The patients were partially or completely edentulous individuals who received prosthodontic treatment, including cast partial or complete dentures, at the Tsurumi University Department of Removable Prosthodontics between 1999 and 2007. According to the laboratory instructions at the Tsurumi University Dental Laboratory Center, the denture frameworks were classified as partial (PD) or complete (CD) and fabricated from commercially pure titanium (CPTi), a titanium alloy (Ti Alloy), a cobalt-chromium alloy (Co-Cr), and a Type IV gold alloy (Au-Pt).<br>From April 1999 to March 2007, we prepared a total of 1,470 cast metal plate dentures, 295 (20.1%) of which were made with titanium. CP Ti (Grade 3) dentures were used in 263 patients (17.9%), and Ti Alloy (Ti-6Al-7Nb) dentures were used in 32 (2.2%). The majority of the cast plates were made with Co-Cr (995, 67.7%). CP Ti is well known to be softer and more prone to wear than Ti-6Al-7Nb but is frequently used for the preparation of partial dentures at our University because of its high biocompatibility.<br>CP titanium is favorable because it rarely results in metal allergy, and is lightweight.

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