余大爷已过古稀之年,打从最后一颗牙齿“下岗”后,就与牙刷“拜拜”了。可自从没有刷牙后,嘴里总觉得苦苦的,出气也有一缕异味。他到医院检查,没查出什么大问题,医生建议他继续刷“牙”。余大爷心头很纳闷:牙都没有了,还刷啥呢?生活中像余大爷这样的老年人绝非鲜见,他们将刷牙? Grandpa Yu has passed the age of seventies, hit the last tooth from the “laid-off”, with the toothbrush “bye”. Since there is no brushing, the mouth always feel hard, there is also a smell of gas. He went to the hospital for examination, did not find out any major problems, the doctor advised him to continue brushing “teeth.” Yu uncle my heart is wondering: teeth are gone, but also brush what? Life like Uncle elders such elderly are not uncommon, they will brush your teeth?