Galloway S E, Pashley D H
J Periodontol. 1987 Jul;58(7):464-9. doi: 10.1902/jop.1987.58.7.464.
The effects of a constant blast from the Prophy-Jet directed at enamel, dentin, and cementum over 5-, 10-, 15-, 20-, 30-, 40-, 50- and 60-second periods were evaluated to determine what effects the spray had on tooth structure. There was no visible effect on enamel when the spray was directed at the surface for as long as 60 seconds. It was shown, however, that as little as 5 seconds of continuous spray caused a substantial loss of structure when the spray was directed at dentin and cementum. This structural loss was linearly related to the amount of time the area was subjected to the spray. Substitution of flour of pumice for the Prophy-Jet powder resulted in approximately the same rate of loss of root structure. The results suggest that the manufacturers should provide more explicit warnings regarding the abrasiveness of the device on exposed dentin and cementum areas.
评估了使用Prophy-Jet持续喷射5秒、10秒、15秒、20秒、30秒、40秒、50秒和60秒对牙釉质、牙本质和牙骨质的影响，以确定喷雾对牙齿结构的影响。当喷雾对准表面长达60秒时，对牙釉质没有可见影响。然而，结果表明，当喷雾对准牙本质和牙骨质时，连续喷雾短短5秒就会导致大量结构损失。这种结构损失与该区域接受喷雾的时间量呈线性相关。用浮石粉替代Prophy-Jet粉末导致牙根结构的损失率大致相同。结果表明，制造商应就该器械对暴露的牙本质和牙骨质区域的磨蚀性提供更明确的警告。
