Can you shout it out when you put on a drooling ball?

I can't. According to Sohu News, saliva plays a very important role in the oral cavity. On the one hand, it can ensure the moist environment of the mouth, so that the flora can reach a balanced state, on the other hand, it can ensure that the teeth are not dry and not eroded by bacteria, and you can't talk with a saliva ball on.