Yaacob H B, Park A W
Dental Faculty, University of Malaya, Kuala Lumpur.
J Nihon Univ Sch Dent. 1990 Sep;32(3):175-80. doi: 10.2334/josnusd1959.32.175.
Among 350 inhabitants of two villages, 31 (8.9%) cleaned their teeth using table salt and charcoal applied to their forefinger or a Melastoma brush. As a result, all had distinct forms of abrasion cavity on the labial surfaces of their teeth. All of the above three agents are highly abrasive and injurious to both the hard and soft oral tissues. This dying practice is only popular among a very small number of persons in the older age group, and should be discouraged.
在两个村庄的350名居民中，有31人（8.9%）使用食盐和用食指蘸取的木炭或野牡丹属植物刷子清洁牙齿。结果，所有人的牙齿唇面都有明显的磨损腔。上述三种物质都具有很高的研磨性，对口腔软硬组织都有损害。这种逐渐消失的做法只在老年人群体中极少数人里流行，应该予以劝阻。
