DENTIN HYPERSENSITIVITY - THE EFFECT OF TOOTHBRUSHING AND DIETARY COMPOUNDS ON DENTIN INVITRO - AN SEM STUDY
DENTIN HYPERSENSITIVITY - THE EFFECT OF TOOTHBRUSHING AND DIETARY COMPOUNDS ON DENTIN INVITRO - AN SEM STUDY
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DOI：
10.1111/j.1365-2842.1992.tb01086.x
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发表时间：
1992-03-01
影响因子：
2.9
通讯作者：
ADAMS, D
中科院分区：
文献类型：
--
作者：
ABSI, EG;ADDY, M;ADAMS, D
当牙本质小管在牙本质表面上开放并且对活髓开放时，发生牙本质过敏。 牙本质过敏症的病因学研究还很有限。 特别是，很少有人知道有关的代理商，删除牙本质玷污层暴露小管。 刷牙当然会暴露牙本质，但牙刷本身是否有打开牙本质小管的作用还没有确定。 这项体外研究的目的是确定牙刷是否可以去除或产生玷污层。 此外，还评估了刷牙和饮食液对牙本质的综合影响。 通过扫描电子显微镜观察刷牙，以去除和重建牙本质标本上的玷污层。 然而，这个过程需要相当长的时间，在正常刷牙的条件下，后者不太可能在打开小管中发挥直接的病因作用。 实际上，与牙膏一起，刷牙更可能通过机械地形成涂抹层而具有治疗作用。 相反，重要的是，在食用酸的存在下刷牙增强了玷污层的去除。 这一发现提出了一个问题，即牙科专业人员是否应该建议在饭前刷牙，而不是像通常那样在饭后刷牙。
Dentine hypersensitivity occurs when dentinal tubules are open on the dentine surface and patent to a vital pulp. There has been limited interest in the aetiology of dentine hypersensitivity. In particular, little is known about agents that remove the dentine smear layer to expose tubules. Toothbrushing certainly may expose dentine, but whether a toothbrush per se has the effect of opening tubules has not been established. The aim of this study in vitro was to determine whether a toothbrush could remove or create a smear layer. In addition, the combined effects of toothbrushing with dietary fluids on dentine was assessed. Toothbrushing was observed, by scanning electron microscopy, both to remove and to recreate a smear layer on dentine specimens. However, the processes took a considerable time, and under conditions of normal toothbrushing it is unlikely that the latter plays a direct aetiological role in opening tubules. Indeed, together with toothpaste it is more likely that brushing has a therapeutic action by mechanically forming a smear layer. Conversely, and importantly, toothbrushing in the presence of dietary acids enhanced smear layer removal. This finding raises the question of whether the dental profession should be advising that teeth be brushed before meals rather than after, as is often the case.