Gaspersic D
Faculty of Medicine, Department of Stomatology, University of Ljubljana, Slovenia.
J Oral Pathol Med. 1995 Apr;24(4):153-8. doi: 10.1111/j.1600-0714.1995.tb01157.x.
The aim of this study was to investigate the enamel microhardness and the histological features of eight enamel pearls of various size. The microhardness of the pearl enamel ranged from 272.4 to 407.2 Vickers microhardness values (VMV) and resembled that of the enamel of the carrier teeth (277.1-424.3). A histological resemblance between the tissues of the enamel pearls and those of the carrier teeth was also found. The resemblance was more pronounced in larger pearls, which showed a variability of the enamel microhardness and structure in the occlusal-cervical direction typical of the tooth crown. Large pearls also exhibited a root and a pulp. Some histological features of the enamel pearls were probably caused by pressures exerted on the developing pearl by its surroundings. It is suggested that the histogenesis of small and large pearls is based on the ability of the developing root of the carrier tooth to behave in part as a new tooth germ.
本研究的目的是调查8颗不同大小釉珠的釉质显微硬度和组织学特征。釉珠釉质的显微硬度在272.4至407.2维氏显微硬度值（VMV）之间，与载体牙釉质的显微硬度（277.1 - 424.3）相似。还发现釉珠组织与载体牙组织之间存在组织学相似性。这种相似性在较大的釉珠中更为明显，较大釉珠在咬合 - 颈部方向上表现出典型牙冠的釉质显微硬度和结构变化。大釉珠还呈现出牙根和牙髓。釉珠的一些组织学特征可能是由其周围环境对发育中的釉珠施加的压力所致。有人提出，小釉珠和大釉珠的组织发生是基于载体牙发育中的牙根部分表现为新牙胚的能力。
