Brännström M, Johnson G, Nordenvall K J
J Am Dent Assoc. 1979 Oct;99(4):612-8. doi: 10.14219/jada.archive.1979.0337.
With the exception of direct electrical stimulation, it seems that all procedures known to produce dentinal pain may mechanically distort the structure of pain-sensitive nerves in the pulp and predentinal area and that this effect is mediated by a hydrodynamic link. Nature may contribute to insensitive dentin by: production of irregular, atubular dentin at the pulpal wall; obliteration of dentinal tubules by sclerosis; and mineralization of a superficial layer, pellicle or plaque, at the exposed surface. Few clinical methods are capable of accelerating these mechanisms. A technique of resin impregnation for the desensitization of exposed dentin has been presented. After proper pretreatment, that includes drying the dentin surface, resin tags can be obtained in the outer part of the dentinal tubules and may immediately and permanently relieve dentinal pain. This technique seems to be a good alternative to other methods, especially for patients with occlusal or incisal exposures caused by abrasion, grinding, or fracture, in which other methods cannot provide immediate and long-lasting desensitization.
除直接电刺激外，似乎所有已知会产生牙本质疼痛的操作都可能机械性地扭曲牙髓和前期牙本质区域中痛觉敏感神经的结构，并且这种效应是由流体动力联系介导的。自然因素可能通过以下方式导致牙本质敏感：在牙髓壁产生不规则的无小管牙本质；通过硬化使牙本质小管闭塞；以及在暴露表面的表层、薄膜或菌斑矿化。很少有临床方法能够加速这些机制。本文介绍了一种用于使暴露牙本质脱敏的树脂浸渍技术。经过适当的预处理，包括干燥牙本质表面，可以在牙本质小管的外部获得树脂标签，并可立即且永久地缓解牙本质疼痛。对于其他方法无法提供即时和持久脱敏效果的患者，尤其是因磨损、磨耗或骨折导致咬合面或切缘暴露的患者，该技术似乎是其他方法的良好替代方案。
