Heath J R, Davenport J C, Jones P A
J Oral Rehabil. 1983 Mar;10(2):159-175. doi: 10.1111/j.1365-2842.1983.tb00110.x.
The physical removal of plaque from dentures by brushing is important in the maintenance of oral health. However, there is a danger that brushing will abrade acrylic resin. A machine using a rotary brushing action was therefore utilized for laboratory tests of possible cleaning pastes, employing a toothbrush with good access and adaptability to denture surfaces. Crest toothpaste produced the most abrasion on acrylic resin, Dentu-Creme the least. An experimental paste produced an appreciably lower abrasion rate. Self-cured specimens wore more than heat-cured ones. The rate of abrasion decreased as the temperature was raised. Brushing with water alone, or with a 10% solution of soap, did not produce detectable wear. The wear produced by proprietary cleaners when hand brushing the lingual flanges of dentures and flat blanks of heat-cured acrylic was also measured. Boots denture cleaning paste produced the greatest abrasion, Dentu-Creme the least. The wear measured by reference to a glass plane was at least twice that recorded by the decrease in depth of a groove. The machine did not quantitatively produce the same abrasion as hand brushing, nor did it qualitatively rank the pastes in the same order of abrasiveness. The clinical relevance of these results is discussed.
通过刷牙物理去除假牙上的牙菌斑对维持口腔健康很重要。然而，刷牙存在磨损丙烯酸树脂的风险。因此，使用一种具有旋转刷牙动作的机器对可能的清洁膏进行实验室测试，该机器使用的牙刷能够很好地接触假牙表面并与之适配。佳洁士牙膏对丙烯酸树脂的磨损最大，洁齿灵牙膏的磨损最小。一种实验性牙膏的磨损率明显较低。自凝标本比热凝标本磨损更多。随着温度升高，磨损率降低。仅用水或用10%的肥皂溶液刷牙不会产生可检测到的磨损。还测量了使用专利清洁剂手动刷洗假牙舌侧边缘和热凝丙烯酸平板时产生的磨损。博姿假牙清洁膏产生的磨损最大，洁齿灵牙膏的磨损最小。以玻璃平面为参照测量的磨损至少是通过凹槽深度减小记录的磨损的两倍。该机器在磨损量上与手动刷牙不同，在磨损性排序上也与手动刷牙对牙膏的排序不同。本文讨论了这些结果的临床相关性。
