Pashley D H, Stewart F P, Galloway S E
Arch Oral Biol. 1984;29(5):379-83. doi: 10.1016/0003-9969(84)90164-x.
The effects of evaporation produced by air blasts of 0, 0.5, 2 or 5 min to dentine in vitro were evaluated by measuring dentine hydraulic conductance before and after each trial. When the tubules were filled with water, even prolonged evaporation had no effect on dentine permeability. Tubules filled with physiological salt solution produced a time-dependent decrease in dentine permeability. Tubules filled with 1.5 per cent albumin in water gave the largest reductions in dentine permeability. These effects were more marked in unetched as opposed to acid-etched dentine. The results suggest that part of the reduction in dentine sensitivity produced clinically by prolonged air blasts may be due to precipitation of organic and inorganic constituents of dentinal fluid at the surface.
通过在每次试验前后测量牙本质的水力传导率，评估了体外0、0.5、2或5分钟的气吹产生的蒸发对牙本质的影响。当牙本质小管充满水时，即使长时间蒸发也不会对牙本质渗透性产生影响。充满生理盐溶液的小管使牙本质渗透性呈时间依赖性降低。充满1.5%水白蛋白的小管使牙本质渗透性降低幅度最大。这些影响在未酸蚀的牙本质中比酸蚀牙本质中更明显。结果表明，临床上长时间气吹导致的牙本质敏感性降低部分可能是由于牙本质液的有机和无机成分在表面沉淀所致。
