Juhl M
Scand J Dent Res. 1983 Apr;91(2):90-5. doi: 10.1111/j.1600-0722.1983.tb00782.x.
Nuva Seal replicas of pits and fissures from surgically removed unerupted human third molars and premolars, and from erupted premolars extracted for orthodontic reasons, were examined in the scanning electron microscope. The results confirm that the morphology on occlusal surfaces of third molars is extremely variable with numerous pits of considerable length positioned at various angles relative to the fissures. In contrast, the morphology of unerupted and erupted premolars is simpler with fewer and shorter pits positioned perpendicular to the fissure. It is pointed out that fine details of the morphology are lost when reconstructions of the occlusal morphology are made from serial ground sections. However, such reconstructions seem to be less reliable in third molars than in premolars.
对从外科手术移除的未萌出人类第三磨牙和前磨牙，以及因正畸原因拔除的已萌出前磨牙上的窝沟进行了Nuva Seal复制，并在扫描电子显微镜下进行了检查。结果证实，第三磨牙咬合面的形态极具变异性，有许多长度可观的窝，它们相对于裂隙呈不同角度分布。相比之下，未萌出和已萌出前磨牙的形态更简单，垂直于裂隙的窝更少且更短。需要指出的是，从连续磨片制作咬合形态重建时，形态的细微细节会丢失。然而，这种重建在第三磨牙中似乎不如在前磨牙中可靠。
