root of tooth的用法和樣例：
例句
- Considering the time-variant mesh stiffness, the calculated results demonstrated the change of tooth root bending stress in one engagement period.
計算結果揭示了由于時(shí)變嚙合剛度的影響齒根彎曲應力在一個(gè)嚙合周期的變化規律。 - The 28-year-old male got his amputated molar tooth lost in the submandibular space when receiving tooth extraction.
患者于接受智齒拔除時(shí)，牙齒齒根掉入下頷下間隙，經(jīng)手術(shù)取出，無(wú)合并癥發(fā)生。
