Today’s #kanji is 歯 which makes its own radical of #はへん（歯）. It used to be written as 齒. The bottom half which represents teeth in a mouth is its semantic element and the top half 止 is the phonetic element.

Meaning: teeth
Reading: シ、は（ば）

歯科医（シカイ）: a dentist, a dental surgeon (formal)
永久歯（エイキュウシ）: a permanent tooth, the second teeth
義歯（ギシ）: denture, false teeth
臼歯（キュウシ）: a molar
乳歯（ニュウシ）: a milk tooth, a baby tooth

歯（は）: tooth, teeth
歯医者（はいしゃ）: a dentist, a dental surgeon (colloquial)
歯車（はぐるま）: a gear wheel, a gear, a cogwheel
入（い）れ歯（ば）: a false tooth, a denture, a plate
奥歯（おくば）: a molar, a back tooth (colloquial)
前歯（まえば/ゼンシ）: a fore-tooth, a front tooth, an incisor

Please visit my JLPT N3 Kanji list for more JLPT N3 kanji characters. At least 2 links are added each week.