Ruben Jan L, Truin Gert-Jan, Loomans Bas A C, Huysmans Marie-Charlotte D N J M
Department of Dentistry, Radboud University Medical Center;
Department of Dentistry, Radboud University Medical Center.
J Vis Exp. 2018 Feb 2(132):56400. doi: 10.3791/56400.
Chewing, drinking, and occasional tooth grinding will result in physiological tooth wear during a lifetime. Extreme challenges, such as bruxism or habitual chewing on foreign objects, may lead to excessive wear. Recently, the role of erosion in accelerating mechanical tooth wear has been recognized, but the interplay between chemical and mechanical wear processes has not been extensively studied. Our laboratory recently introduced a novel oral wear simulation device, the Rub&Roll, that enables the user to perform wear and loading studies separately or simultaneously in an erosive and/or abrasive environment. This manuscript describes an application of the device: the combined mechanical and erosive loading of extracted human (pre)molars in a simulated chewing movement, with a controlled application of force, velocity, fluid, and time, and the application of non-contact profilometry in visualizing and measuring the resulting wear pattern. The occlusal morphology that was created in the experiment with the highest loading level is very similar to the clinical presentation of erosive wear.
在人的一生中，咀嚼、饮水以及偶尔的磨牙都会导致生理性牙齿磨损。诸如磨牙症或习惯性咀嚼异物等极端情况可能会导致过度磨损。最近，人们已经认识到侵蚀在加速机械性牙齿磨损中的作用，但化学磨损和机械磨损过程之间的相互作用尚未得到广泛研究。我们实验室最近推出了一种新型口腔磨损模拟装置——Rub&Roll，它能让使用者在侵蚀性和/或磨蚀性环境中分别或同时进行磨损和加载研究。本文描述了该装置的一种应用：在模拟咀嚼运动中对拔除的人类（前）磨牙进行机械和侵蚀性联合加载，同时控制力、速度、流体和时间，并应用非接触轮廓测量法来可视化和测量由此产生的磨损模式。在最高加载水平实验中形成的咬合形态与侵蚀性磨损的临床表现非常相似。
