Weine F S
Loyola University of Chicago.
Compendium. 1994 Sep;15(9):1130, 1133-6 passim; quiz 1140.
Molar teeth present more problems during endodontic therapy than do bicuspid or anterior teeth. The major reasons for this are that molars can have complicated canal systems with unexpectedly large numbers of teeth with four canals, and they often have quite curved canals, which are more difficult to prepare and fill. The mandibular second molar generally is the easiest of these difficult teeth to treat, but they do have some areas of complication, too. The mesial root almost always has two--not one--canals and a rarely described condition, the C-shaped canal system, may be present.
与双尖牙或前牙相比，磨牙在牙髓治疗过程中会出现更多问题。主要原因在于，磨牙的根管系统可能很复杂，有数量出乎意料的四根管牙齿，而且它们的根管通常相当弯曲，更难以预备和充填。下颌第二磨牙通常是这些难治疗牙齿中最容易治疗的，但它们也确实存在一些复杂区域。近中根几乎总是有两根而非一根根管，并且可能存在一种很少被描述的情况，即C形根管系统。
