Miller B H, Komatsu H, Nakajima H, Okabe T
Department of Biomaterials Science, Baylor College of Dentistry, Dallas, Texas 75266-0677, USA.
Am J Dent. 1995 Aug;8(4):182-6.
To determine the amount of fluoride released from several glass ionomer products [Fuji Cap II, Fuji Ionomer Type II, Ketac-Silver, Chelon-Silver, and Miracle Mix (hand-mixed and encapsulated)], and to compare them between triturated (5, 10, 15 seconds) encapsulated and hand-mixed glass ionomers.
The amount of fluoride released at 1, 2, 3, 7, 14, 21 and 28 days after the start of immersion in deionized-distilled water at 37 degrees C was determined with a fluoride ion selective electrode. Rates of fluoride release and cumulative amounts of fluoride release were calculated.
Each glass ionomer released the greatest amount of fluoride during the first 24-hour period. Although there was some variation between products, generally the hand-mixed specimens released significantly (P < 0.05) less fluoride than those prepared by mechanical trituration (10 and 15 seconds). The cumulative amounts of fluoride released from the mechanically triturated glass ionomers were significantly (P < 0.05) greater than the amounts released from the hand-mixed glass ionomers. No significant differences in the cumulative amounts of fluoride released from triturated materials were found among the different trituration times.
测定几种玻璃离子产品[Fuji Cap II、Fuji Ionomer Type II、Ketac-Silver、Chelon-Silver和Miracle Mix（手工混合和封装）]释放的氟化物量，并比较研磨（5、10、15秒）后的封装玻璃离子和手工混合玻璃离子之间的差异。
使用氟离子选择性电极测定在37℃的去离子蒸馏水中浸泡开始后1、2、3、7、14、21和28天释放的氟化物量。计算氟化物释放速率和氟化物释放累积量。
每种玻璃离子在最初24小时内释放的氟化物量最大。虽然产品之间存在一些差异，但一般来说，手工混合的样本释放的氟化物明显（P < 0.05）少于机械研磨（10和15秒）制备的样本。机械研磨的玻璃离子释放的氟化物累积量显著（P < 0.05）大于手工混合的玻璃离子释放的量。不同研磨时间的研磨材料释放的氟化物累积量之间未发现显著差异。
