詞語:odontolith
odontolith的意思
odontolith 牙垢;齒石;牙積石;牙石;
odontolith的參考例句
1.What are dental calculus and odontolith? 什麼是牙垢和牙石?
2.Can we prevent dental calculus and odontolith? 牙垢和牙石可以預防嗎?
3.How to remove the dental calculus and odontolith? 怎樣除去牙垢和牙石呢?