牙套 [－－]

Jyutping ngaa4 tou3
Pinyin yá tào

Definitions (CC-CEDICT)
  1. orthodontic brace
  2. (dental) crown
Definitions (粵典–words.hk)
  1. 名詞
    又​叫​人造​牙冠​，​車細​隻​牙​之​後​，​固定​喺​隻​牙​上面
    dental crown; tooth cap
Definitions (Wiktionary)
  1. noun
    braces (device for straightening teeth)
    (syn.) 牙箍