近中午時(shí), 顧客們絡(luò)繹而來.Later in the morning, the customers came fast and furious.向作戰(zhàn)目標(biāo)順利推近中.Progressing steadily toward the operation target.方法: 選取40個(gè)下頜磨牙近中頰側(cè)彎曲根管,隨機(jī)分為兩組,每組20個(gè)根管.Method: 40 curved mesial - buccal canals in mandibu...