歯質の保存をめざして　クラウン辺縁部の二次う蝕形態　エナメル質残存状態との関係

• 山口 泰彦

  北海道大学歯学部附属病院特殊歯科治療部

• 内山 洋一

  北海道大学歯学部

書誌事項

タイトル別名

• Conservation of Tooth Structure. The Shape of Secondary Caries Developing from the Margin of Cast Crown. The relationship to the state of enamel remaining near the margin.
• The relationship to the state of enamel remaining near the margin
• エナメル質残存状態との関係

抄録

The purpose of this study was to clarify the relationship between the shape of secondary caries developing from the margin of cast crown and the state of enamel remaining near the margin. Ten extracted human premolar teeth were restored with cast crown. The shapes of prepared teeth were following three types. 1) The margin of cast crown and the prepared surface were set on dentine, 2) The margin and the prepared surface were set on enamel, 3) The margin was set on enamel, but the prepared surface was set on dentine. The crowns were cemented with zinc phosphate cement. In the teeth, artificial secondary caries were produced by the acid-gelatin system (pH 4.0). These specimens were sliced to serial thin sections and observed with optical microscope and microradiography. When the margin of cast crown and prepared surface were set on enamel, the development of secondary caries toward the inside of cast crown was minimal. This result leads to the conclusion that the preservation of enamel in abutment teeth is effective for prevention of secondary caries developing from the margin of cast crown.

収録刊行物

• 接着歯学

  接着歯学 15 (3), 255-261, 1997

  日本接着歯学会

キーワード

• 二次齲蝕
• クラウン
• 人工齲蝕
• エナメル質
• 支台歯形成

詳細情報

• CRID: 1390282679326867968
• NII論文ID: 130003845596
• DOI: 10.11297/adhesdent1983.15.255
• ISSN: 21859566
• ISSN: 09131655
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可