Asano K, Kawamoto R, Iino M, Fruichi T, Nojiri K, Takamizawa T, Miyazaki M
Oper Dent. 2014 Mar-Apr;39(2):159-65. doi: 10.2341/13-034-L. Epub 2013 Jun 26.
To determine the effect of pre-reacted glass-ionomer (PRG) filler extraction solution on the demineralization of bovine enamel by measuring changes in the ultrasound transmission velocity.
The specimens were prepared by cutting bovine teeth into enamel blocks. The specimens were immersed in buffered lactic acid solution for 10 minutes twice a day, and then stored in artificial saliva. Other specimens were stored in PRG filler extraction solution for 10 minutes, followed by 10-minute immersion in the buffered lactic acid solution twice a day. The propagation time of longitudinal ultrasonic waves was measured by a pulser receiver. Six specimens were used for each condition, and analyses of variance followed by Tukey tests (α=0.05) were done.
No changes in sonic velocity were found for specimens stored in the PRG filler extraction solution, indicating that the PRG extraction solution had an effect on inhibiting the demineralization of bovine enamel.
The results obtained with the use of an ultrasound measurement technique suggested that PRG filler extraction solution has the ability to prevent demineralization of enamel.
通过测量超声传播速度的变化，确定预反应玻璃离子（PRG）填料提取液对牛牙釉质脱矿的影响。
将牛牙切成牙釉质块制备标本。标本每天两次浸泡在缓冲乳酸溶液中10分钟，然后保存在人工唾液中。其他标本先在PRG填料提取液中保存10分钟，然后每天两次浸泡在缓冲乳酸溶液中10分钟。用脉冲接收器测量纵向超声波的传播时间。每种情况使用6个标本，并进行方差分析，随后进行Tukey检验（α=0.05）。
保存在PRG填料提取液中的标本声速未发现变化，表明PRG提取液对抑制牛牙釉质脱矿有作用。
使用超声测量技术获得的结果表明，PRG填料提取液有预防牙釉质脱矿的能力。
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