If you smoke or use smokeless tobacco, your dentist or dental hygienist can show you where a sore, spot, patch or lump is most likely to appear.

• 如果你吸烟或者无烟烟草，你的牙医或牙科保健师会告诉你哪里很可能会出现溃疡，斑片，碎屑或者肿块。