撤去した固定性金属補綴装置の観察 : 変色について Observation of the Fixed Metal Prosthodontic Appliances Removed from the Oral Cavity : On the Discoloration

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著者

    • 田中 美保子 TANAKA Mihoko
    • 長崎大学歯学部歯科補綴学第二講座 Department of Removable Prosthodontics, Nagasaki Univeristy School of Dentistry
    • 三海 正人 MIKAI Masato
    • 長崎大学歯学部歯科補綴学第二講座 Department of Removable Prosthodontics, Nagasaki Univeristy School of Dentistry
    • 中村 茂 NAKAMURA Shigeru
    • 長崎大学歯学部歯科補綴学第二講座 Department of Removable Prosthodontics, Nagasaki Univeristy School of Dentistry
    • 小池 麻里 KOIKE Mari
    • 長崎大学歯学部歯科補綴学第二講座 Department of Removable Prosthodontics, Nagasaki Univeristy School of Dentistry
    • 藤井 弘之 FUJII Hiroyuki
    • 長崎大学歯学部歯科補綴学第二講座 Department of Removable Prosthodontics, Nagasaki Univeristy School of Dentistry

抄録

The discoloration of the fixed metal prosthodontic appliances, which had been removed from the oral cavity, was observed to obtain epidemiological and clinical suggestions to select the dental alloy. This study was performed on 396 fixed metal prosthodontic appliances which were removed from the oral cavity.<BR>The findings were as follows:<BR>1. The appliances were composed of 7 kinds of dental alloy, Au-Pd-Ag-Cu-alloy (74.4%), Ag-alloy (9.8%), Ni-Cr-alloy (9.5%), Au-alloy (4.5%), Amalgam (0.5%), Co-Cr-alloy (0.3%), Titanium alloy (0.3%), and others (0.7%). The appliances observed were full cast crowns (33.1%), bridges (21.0%), fillings or partial veneer crowns (16.7%), resin faced cast crowns (13.1%), connected crowns (6.3%), root caps (2.5%), band crowns (2.3%), porcelain-fused-to-metal-crowns (1.8%), metal cores (1.8%), and attachments (1.5%).<BR>2. The proportionof the discoloration of appliances removed was 69%, and this was about 1.7 timeshigher than before removal (p > 0.01).<BR>3. The discoloration of appliances increased with the duration of use in the oral cavity (p > 0.01), and theappliances of Ag alloy were the most discolored (88.9%, p> 0.05) among 7 kinds of alloy.<BR>4. Discoloration was frequently observed at the soldered portions, inner margin, and basal surfaces of pontic or the lower parts of connectionat the proximal embrasure (p > 0.05).<BR>5. The proximal surfaces adjoiningdiscolored appliances were more discolored than those adjoining nondiscolored appliances (p > 0.01).<BR>6. In patients whose oral prophylaxis status were better, the appliances tended to be less discolored.

収録刊行物

  • 日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society

    日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society 42(6), 1037-1044, 1998-12-10

    社団法人 日本補綴歯科学会

参考文献:  15件中 1-15件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10008171707
  • NII書誌ID(NCID)
    AN00197911
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03895386
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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