A combined teeth unit includes a body, a bite unit, a tooth neck unit, and a root unit. The body unit includes a body, the body having an upper surface, a lower surface, and a plurality of side surfaces between the upper and lower surfaces. The bite unit includes a plurality of bite member disposed on the upper surface. The tooth neck unit includes a plurality of tooth neck member disposed in the side surfaces. The root unit includes a plurality of root member disposed on the lower surface. The bite unit, the tooth neck unit, and the root unit cooperate combination to form the shape of a teeth, and the frame encloses the body.一種組合式牙齒包含一本體單元、一咬合單元、一牙頸單元,及一牙根單元。本體單元包括一本體,該本體具有一上表面、一相反的下表面,及複數介於該上、下表面的側面。該一咬合單元包括複數可分離地設置於該上表面的咬合體。該牙頸單元包括複數可分離地設置於該側面的牙頸體。該牙根單元包括複數可分離地設置於該下表面的牙根體,該咬合單元、該牙頸單元,及該牙根單元的外觀組合形成一牙齒的形狀,且將該本體框圍起來。3‧‧‧本體單元31‧‧‧本體311‧‧‧上表面312‧‧‧下表面313‧‧‧側面41‧‧‧咬合體51‧‧‧牙頸體61‧‧‧牙根體7‧‧‧組合單元71‧‧‧第一組合體72‧‧‧第二組合體73‧‧‧連接段
