题型:单项选择题 A3/A4型题 29岁男性患者,左上前牙不慎撞断1天,冷热刺激痛,要求修复。口腔检查示左上2外伤冠折露髓,远中及舌侧缺损至龈下1.5~2mm,松(-),叩(+),龈缘红肿。左上3近中邻面浅龋,余牙牙周情况良好。下列哪项修复前准备是不必要的()A.脱敏治疗B.根管治疗C.邻牙去腐充填D.冠延长术E.选磨调 查看答案
题型:选择题 Although the wind has________,the rain remains steady,so you still need a raincoat.[ ]A.turned up B.gone backC.died down D.blown out 查看答案