A Clinical Survey of Post and Cores, Part 4

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  • Tsubota Yuji
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Fukagawa Nao
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Nishimura Yasushi
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Ando Eriko
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Hashimoto Koh
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Iwanami Keiichi
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine
  • Fukushima Shunji
    Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine

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  • 支台築造の比較統計的観察　　第４報

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Purpose: A survey was performed in 2001 in order to grasp the actual condition regarding methods and materials of foundation restorations. The results of 3 surveys in 1977, 1986, and 1993 were compared.<BR>Materials and Methods: All abutment teeth and core buildup that were treated by foundation restoration at Tsurumi University Dental Clinic Prosthodontics Treatment Room were set as the survey target from February to April 2001. The survey items were patients, abutment teeth, and data of core buildup.<BR>Results: Core buildups of 311 teeth of 225 patients were examined. In all abutment teeth, there were 5% of vital teeth and 95% of non-vital teeth. There were many abutment teeth with little remaining tooth structure. Regarding type of core buildup, cast metal core buildups were chosen by 61% and composite resin core buildups were chosen by 39%. In composite resin core buildups, the indirect method was performed in 70% and the direct method was performed in 30%. As for luting cement, adhesive resin cement was chosen by 71% at the time of cast metal core buildup. Sand blast process ing was performed before setting in 83% at the time of cast metal core buildup. And at the time of use, 97% used an adhesive metal primer for the adhesive resin cement.<BR>Conclusions: Compared with the results of the 3 previous reports, this survey showed that many composite resin core buildups and adhesive resin cement of adhesive material were chosen. Reliable dentin adhesion can be used for dislodgement or root fracture.

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