Addy M, Pearce N
Department of Periodontology, Dental School, University of Wales College of Medicine, Cardiff.
Arch Oral Biol. 1994;39 Suppl:33S-38S. doi: 10.1016/0003-9969(94)90186-4.
If the hydrodynamic theory of stimulus transmission across dentine is valid, sensitive dentine has tubules open at the surface and patent to the pulp. Direct and indirect evidence supports this supposition. Factors that result in dentine exposure remove the covering enamel or periodontal tissues (gingival recession). Epidemiological and clinical data for the distribution of exposed cervical dentine indicate that chronic trauma from physical and chemical factors is the most significant aetiological factor. Brushing with a toothpaste may not open dentinal tubules. It is more likely that toothpaste ingredients, when brushed on dentine, would create a smear layer. Exposure of tubules by erosion is probably the major initiator of sensitivity. An increase in our understanding of the aetiological factors involved in dentine hypersensitivity is essential if a sound approach to its management is to evolve. Such information could emanate from epidemiological studies, clinical investigations and laboratory experiments.
如果关于刺激穿过牙本质传递的流体动力学理论是正确的，那么敏感牙本质具有在表面开放且通向牙髓的小管。直接和间接证据都支持这一假设。导致牙本质暴露的因素会去除覆盖的釉质或牙周组织（牙龈退缩）。暴露的颈部牙本质分布的流行病学和临床数据表明，物理和化学因素造成的慢性创伤是最重要的病因因素。用牙膏刷牙可能不会打开牙本质小管。更有可能的是，牙膏成分刷在牙本质上时会形成一层玷污层。因酸蚀导致小管暴露可能是敏感性的主要引发因素。如果要形成合理的牙本质过敏管理方法，深入了解其病因因素至关重要。此类信息可来自流行病学研究、临床调查和实验室实验。
