入れ歯（いれば、ireba）
- denture

The Japanese word 入れ歯, pronounced いれば (ireba), refers to dentures. These are removable dental appliances used to replace missing teeth. 入れ歯 can be partial or complete, depending on the number of teeth missing. They are designed to restore a person's ability to chew, speak, and smile with confidence.

⚫︎おばあさんは総入れ歯］です。 Translation: My grandmother has complete dentures. ⚫︎食事の前に入れ歯］を洗います。 Translation: I wash my dentures before eating. ⚫︎入れ歯］の調子はどうですか？ Translation: How are your dentures doing?

You use 入れ歯 when discussing dentures or false teeth. It's a common and straightforward term in Japanese. It can be used in conversations with dentists, family members, or friends when talking about someone's dental health.

入れ歯 is typically written in kanji and hiragana: 入れ歯. The kanji 入れ (ire) means "to put in" or "to insert," and the kanji is not so often used. 歯 (ha) means "tooth." The hiragana 歯 (ha) is used. There are no variations in the okurigana for this word.

There aren't many direct synonyms for 入れ歯. However, you might sometimes hear it referred to more casually as 義歯 (gishi), which also means "artificial teeth" or "dentures," though 入れ歯 is more common.

There aren't direct antonyms for 入れ歯. The opposite concept would be having a complete set of natural teeth, but there isn't a single word to express this.

母は部分入れ歯］を使って食べ物を噛みます。 ・Translation: My mother uses partial dentures to chew food. ・Explanation: This sentence describes someone using partial dentures, which replace some missing teeth.

歯医者さんは新しい入れ歯］を作ってくれました。 ・Translation: The dentist made me new dentures. ・Explanation: This sentence explains that a dentist provided a new set of dentures for someone.

The word 入れ歯 is a compound word. 入れ (ire) derives from the verb 入れる (ireru), meaning "to put in" or "to insert." 歯 (ha) means "tooth." Therefore, 入れ歯 literally means "inserted teeth" or "teeth that are put in," accurately describing their function.