従来のガラスアイオノマーセメントと新しい機械的混合セメントのフッ化物放出量の比較．

Comparison of Fluoride Release in Conventional Glass-Ionomer Cements with a New Mechanical Mixing Cement.

• Adriana A Morales-Valenzuela
• Rogelio J Scougall-Vilchis
• Edith Lara-Carrillo
• Rene Garcia-Contreras
• Elias N Salmeron-Valdes
• Lizzeth Aguillón-Sol

抄録

目的:

本論文の目的は、従来の3つの手混合型ガラスイオノマーセメント（GIC）と新しい機械混合型ガラスイオノマーセメントを比較することであった。

PURPOSE: The aim of this paper was to compare three conventional hand mixing glass-ionomer cements (GICs) and a new mechanical mixing glass-ionomer cement.

材料と方法:

サンプルは1、2、6、10、31、90および180日目に測定された。32日目と181日目のモニタリング後，2%フッ化ナトリウムゲル1mlを使用してサンプルを再充電した．

MATERIALS AND METHODS: Samples were measured on days 1, 2, 6, 10, 31, 90 and 180. After 32 and 181 days of monitoring, the samples were recharged by using 1 ml of 2% sodium fluoride gel.

結果:

フッ化物の放出は、初日から全てのGICで高濃度で始まり、GIIIでは32.6ppmとなった。2日目からは、GIIを除いてゆっくりと着実に減少し、3.2ppmと顕著な減少を示した。分散分析(ANOVA)検定では、最初の24時間における4つの材料のフッ化物量の間に統計的に有意な差が認められた。I群(t = -16.95, p = 0.000)とIV群(t = -2.644, p = 0.26)のフッ化物放出量を比較したところ、統計的に有意な差が認められた。

RESULTS: The fluoride release started in high concentration during the first day for all GICs, with a value for GIII of 32.6 ppm. From the 2nd day, a slow, steady decline, with the exception of GII, which showed a marked decline to a value of 3.2 ppm. Analysis of variance (ANOVA) test showed statistically significant differences between the amounts of fluoride of the four materials in the first 24 h. Student t test was used to compare the fluoride release between the first and second recharge in each one of the study groups. Statistically significant differences were found when we compared the fluoride release in groups I (t = -16.95, p = 0.000) and IV (t = -2.644, p = 0.26).

結論:

機械的な混合はより一定したフッ化物の放出の材料であり、再充電の後でそれを臨床医のための重要な利点にさせる最も高いフッ化物の放出を示した。

CONCLUSIONS: A mechanical mixing was the material with the more constant fluoride release and after recharge showed the highest fluoride release which make it an important benefit for clinicians.