咬こう耗もう

noun

attrition; occlusal wear

Dental term for tooth wear caused by tooth-to-tooth contact, such as from grinding or normal aging.

• 咬こう耗もうが進すすむと、歯はが短みじかくなることがあります。

  As attrition progresses, teeth may become shorter.

• 歯はぎしりは咬こう耗もうの原げん因いんの一ひとつです。

  Teeth grinding is one cause of occlusal wear.