gutta percha

This paper introduces a new shape memory material gutta percha shape memory polymer material and an experimental study on its mechanics properties shape memory effect. Keywords gutta-percha, shape memory, crosslinking-degree.

介绍了一种新的形状记忆材料&杜仲胶形状记忆材料，并对其力学特性及形状记忆效应进行了研究。

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Methods: 80 extracted human teeth with single root were prepared using Profile rotary instruments, stainless steel ( SS) RT hands files, shaper sonic files, ultrasonic K files and filled with traditional lateral condensation and warm gutta percha lateral condensation respectively.

方法：本实验采用机动镍钛器械Profile、手用不锈钢器械、声波及超声波器械预备80颗人单根管离体牙后，分别以传统侧压和热侧压充填根管。

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The result indicated that the irritation of the MPU 03 material on periapical tissue was less than the root canal sealer and Gutta percha ( P < 0.01).

结果显示：MPU－03材料对根尖周组织的刺激性明显轻于常规的糊剂牙胶尖充填材料（P＜0.01）。

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