近代主张用临床技术来加强结构脆弱的牙齿,但这些技术尚未对照公认的实验标准进行测验。本文对传统的粘固铸造桩和核修复体与用针和(或)桩及复合树脂一次修复的牙齿进行了比较,并测试其对拉力、剪力和扭力的抗移位性,以便评定这些新技术的固位可靠性。用铸造检、核和牙冠来重建一个牙齿其牙根应能承受咀嚼力。虽成品桩仍被采用,而铸造检和核的修复体比成品桩的固位更好。但不是一切牙根都能适应铸造桩和核的 Modern advocated the use of clinical technology to strengthen the structure of fragile teeth, but these techniques have not yet been tested against the accepted experimental standards. In this paper, we compare the traditional cementitious cast-in-place and nuclear prostheses with one-time repaired teeth with needles and / or piles and composite resins and test their resistance to tensile, shear and torsional forces to assess these Retention of new technology reliability. To reconstruct a tooth with cast inspection, nucleus and crown, the root should be able to withstand the chewing force. While finished piles are still being used, foundry and core prostheses retain better retention than finished piles. But not all roots can adapt to casting piles and cores