Influence of a Vent Hole on the Retentive Force of a Cement-retained Superstructure before/after Thermocycling

DOI Web Site 参考文献15件 オープンアクセス
  • Chen JianRong
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences
  • Nagao Kan
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences
  • Tomotake Yoritoki
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences
  • Oka Kenji
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences
  • Hada Masaru
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences
  • Ichikawa Tetsuo
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, University of Tokushima Institute of Health Biosciences

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説明

Purpose: The purpose of this study was to evaluate the influence of a vent hole on the retentive force of a cement-retained superstructure to an abutment.<BR>Methods: The retentive force of superstructures with/without a vent hole, retained using one of two luting cements, was measured using a universal testing machine both before and after thermocycling<BR>Results: The retentive force of the cement-retained superstructure with the vent hole was greater than that of the cement-retained superstructure without the vent hole. While the retentive force decreased significantly after thermocycling, the size of the vent hole had little influence on the retentive force.<BR>Conclusion: It was concluded that placement of a vent hole in the superstructure is useful, with little adverse effect on the retentive force of the restoration.

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