Mishima N, Yatani H, Kondo Y, Yokoyama T, Yamashita A
Nihon Hotetsu Shika Gakkai Zasshi. 1989 Apr;33(2):466-74. doi: 10.2186/jjps.33.466.
The authors devised a new handy apparatus for iontophoresis in order to prevent pulp irritation caused by tooth reduction. This study was intended to observe the ability of the device. 8% zinc chloride solution was iontophoresed in the dentin of extracted human and bovine teeth by the device. Then, the dye and microbial invasion tests were carried out to investigate how effectively it could seal the dentinal tubules. The following conclusions were drawn: 1. By the zinc iontophoresis, the zinc briefly penetrated into the deep portion of the dentin. 2. The zinc iontophoresis by using the new device showed enough ability to decrease the coloring and bacterial invasion into the dentin, although all of the dentinal tubules were not sealed. 3. The tensile strengths of an adhesive luting resin 'Panavia EX' to the bovine dentin decreased significantly by the zinc iontophoresis. This phenomenon could be partly due to the lack of resin tag formation into the dentinal tubules.
作者设计了一种用于离子导入的新型便捷装置，以防止因牙齿磨除引起的牙髓刺激。本研究旨在观察该装置的性能。通过该装置将8%的氯化锌溶液导入拔除的人牙和牛牙的牙本质中。然后，进行染色和微生物侵入试验，以研究其封闭牙本质小管的效果。得出以下结论：1. 通过锌离子导入，锌可短暂渗透到牙本质深部。2. 使用新装置进行锌离子导入显示出足够的能力来减少牙本质的着色和细菌侵入，尽管并非所有牙本质小管都被封闭。3. 锌离子导入使粘结性粘结树脂“Panavia EX”对牛牙本质的拉伸强度显著降低。这种现象部分可能是由于牙本质小管中缺乏树脂突形成。
