摘要牙中牙（dens in dente）,又称牙内陷（dens invaginatus）是一种牙齿发育畸形,是牙齿发育期间成釉器出现皱褶向内陷入牙乳头所致,根据内陷程度不同表现为畸形舌窝、畸形舌尖、畸形舌沟和牙中牙等。多见于上颌侧切牙。牙体表面的内陷结构容易滞留食物残渣和细菌,可导致牙髓感染和根尖周炎的发生。
4Hulsmann M. Dens invaginatus: aetiology, classification, prevalence, diagnosis, and treatment considerations [J]. Int Endod J, 1997, 30(2): 79-90.
5Oehlers FA. Dens invaginatus (dilated composite odontoma). I. Variations of the invagination process and associated anterior crown forms [J]. Oral Surg Oral Med Oral Pathol, 1957, 10(1 i): 1204-1218.
6Bishop K, Alani A. Dens invaginatus. Part 2: clinical, radiographic features and management options[J]. Int Endod J, 2008, 41(12): 1137-1154.
7Alani A, Bishop K. Dens invaginatus. Part 1: classification, prevalence and aetiology[J]. Int Endod J, 2008, 41(12):1123-1136.
8Gaitonde P, Bishop K. Apexification with mineral trioxide aggregate: an overview of the material and technique [J]. Eur J Prosthodont Restor Dent, 2007, 15(1): 41-45.
9Kirzioglu Z, Ceyhan D. The prevalence of anterior teeth with dens invaginatus in the western Mediterranean region of rurkey[J].International Endodontic Journal, 2009, 42(8): 727-734.
10Lagravere MO, Carey J, Toogood RW, et al. Three-dimensional accuracy of measurements made with software on cone-beam computed tomography images[J]. American Journal of Orthodontics and Dentofacial Orthopedics, 2008, 134(1): 112-116.
