halitosis also called B.O. (bad odor/ bad breath), it's everyone's trouble, i guess. until now i just know what the cause of its smell comes from and nowadays the toothbrush we use usually has the device to clean the waste element on our tongue, just flip brush turndown there are some strips to scrape the dirty remains.
by the way i googled some knowledge about tooth in english which i found some words about that: incisor, cannine, and motar that our tooth's name according to its function; baby teeth, also called milk teeth or deciduous teeth, and wisdom teeth which are according to its growth item of time. another words like false tooth, means its one unit of artificied tooth, and denture which represents one row of false teeth arrangment.
however, tooth theme is also a big knowledge, no wonder people do some adjustment for their teeth which needs to spend lots of money to pay.
besides i specially stood in front of mirror to count my teeth reflecting my upper teeth and hand-calculating my under teeth. by that i knew my teeth total up to 30 after all between the maximun 32 and the minimun 28. event i heard someone got the third row teeth who have one milionth rate of the whole population.woo, that's so amazing.