| 摘要 |
A dental impression tray assembly includes an upper tray and a lower tray operable with the upper tray, and the lower tray in-cludes a first piece configured to measure jaw relations of a patient's mouth and a pair of second pieces de-tachably attachable to the first piece. The first piece of the lower tray is in-serted into the patient's mouth inde-pendently of the pair of second pieces of the lower tray to measure the jaw relations and to obtain a bite registra-tion. After the first piece is connected to the pair of second pieces, the as-sembly allows a final gum impression of the patient's lower gum to be ob-tained. |
