各種材料からなる歯冠へのプラーク蓄積状況

Plaque accumulation on crowns made of various materials.

抄録

固定式補綴物に使用される種々の材料上の歯垢蓄積速度を調べ，各表面に形成される歯垢の組成を評価した．エナメル質，金属，アクリルレジン，ポーセレンの各表面を調査した．歯および固定式補綴物上に形成された歯垢の量は，Silness and Loeの方法によってスコア化された．歯垢の形成速度は個人差があり，歯垢の性状や量もさまざまな材料で異なっていた．2番目の研究では，10人の患者それぞれにアクリルレジン，金属，ポーセレンクラウンを作製した．1時間後，3時間後，24時間後に各材料に吸着した歯垢の量を走査型電子顕微鏡で記録した．また，各種クラウン材に付着した24時間後の歯垢のサンプルを採取し，CHNアナライザー184で調べたところ，表面によって吸着した歯垢の化学組成に違いがあることが明らかになった．SEM検査および生化学分析の結果について報告する．

The rate of plaque accumulation on various materials used for fixed prostheses was investigated, and the composition of plaque formed on each surface was evaluated. Enamel, metal, acrylic resin, and porcelain surfaces were studied. Amounts of plaque that formed on the teeth and fixed restorations were scored using the method of Silness and Loe. Different individuals formed plaque at different rates, and the character and quantity of the plaque was different on the various materials. In a second study, acrylic resin, metal, and porcelain crowns were made for each of 10 patients. The amount of plaque absorbed onto each material after 1, 3, and 24 hours was recorded using scanning electron microscopy. The samples of dental plaque at 24 hours on each type of crown material were collected and investigated in a CHN Analyzer 184, revealing differences in the chemical composition of plaque adsorbed onto different surfaces. The results of SEM examination and biochemical analysis are presented.