多年来临床上对牙体大面积缺损患者往往都是进行完善的根管治疗后,需要用桩核塑形,最后冠修复,使得最终完成的修复体可以承载正常的力。而制作桩核的材料一般采用各种金属。随着多年的临床应用,金属桩的缺陷显 For many years, many patients with large defects in dental implants tend to have perfect root canal treatment. They need to use post-core plastic and finally the crown to make the final prosthesis can carry the normal force. The production of post-core materials generally use a variety of metals. With many years of clinical application, the defect of the metal pile is obvious