Johnson M, Harkness M
Department of Oral Sciences and Orthodontics, School of Dentistry, University of Otago, Dunedin.
N Z Dent J. 1997 Sep;93(413):84-6.
This report describes a coronal radiolucency in an unerupted mandibular premolar. This anomaly, which most frequently involves the mandibular second molars, has been variously attributed to dental caries, dentine hypoplasia, inclusions of uncalcified enamel matrix, and resorption. The present instance was considered to be due to external resorption. Because these lesions may enlarge rapidly, frequent radiographic monitoring of an affected tooth is recommended. Early restorative treatment has been shown to be successful even in affected teeth with small pulp exposures.
本报告描述了一颗未萌出的下颌前磨牙的冠状透射区。这种异常最常累及下颌第二磨牙，其病因有多种，包括龋齿、牙本质发育不全、未钙化釉质基质的包埋以及吸收。本例被认为是由于外部吸收所致。由于这些病变可能迅速扩大，建议对患牙进行频繁的影像学监测。即使在牙髓暴露较小的患牙中，早期修复治疗也已被证明是成功的。
