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随机抽样复查用核全冠修复严重缺损的无髓牙35例42个牙，男21例，女14例，平均年龄42岁。包括铸造桩核、银汞合金核和光固化树脂核；全冠为热凝塑料全冠、铸造或预成合金全冠。经1年以上临床观察表明，经过完善根管治疗的严重缺损的无髓牙，采用桩核结构的全冠修复体时，只要桩核与人工牙冠设计合理，制作精良，就能获得足够的固定力与抗力，恢复功能，预防基牙根纵折、龈炎与继发龋的发生，成功地保存患牙。
A random sample of 35 cases with non-obliterated teeth with nuclear crown restoration 42 cases of 42 teeth, 21 males and 14 females, mean age 42 years old. Including casting post core, silver amalgam nucleus and photocurable resin core; full crown for the thermosetting plastic crown, casting or preformed alloy crown. After more than 1 year of clinical observation shows that after the perfect root canal treatment of non-dental pulp defects, the use of post-core crown full-corneal prosthesis, as long as the post-core and artificial crown design is reasonable, well-made, you can get enough Fixation force and resistance, restore function, prevention of vertical root fracture of the abutment, gingivitis and secondary caries, the successful preservation of the affected teeth.