METHODS: The divaricated molar tooth canals were prepared and impressed then the different canals were waxed separately.One or two parallel canals were built-up and cast with core.

• 方法:通过牙体预备和取模,在模型上进行桩核制作,将一个根或两个平行根与核一起铸造,然后将另外一个单独根分别铸造并穿过核中央,在口内试合后黏固到残根或残冠上。