Radiographic examination of mesiodens and their associated complications

J. I. Asaumi, Y. Shibata, Y. Yanagi, M. Hisatomi, H. Matsuzaki, Hironobu Konouchi, K. Kishi

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


Objectives: To examine mesiodens with regard to their status, their influence on adjacent teeth and their alteration during the follow-up period. Methods: From retrospective reviews of all patients who visited our institution from 1990-2001, we identified 200 patients (256 mesiodentes) who were shown to have mesiodentes on the basis of a periapical radiograph, a panoramic radiograph or an axial radiograph. Results: The number of supernumerary teeth was one in 146 cases (73%), two in 52 cases (26%) and three in 2 cases (1%). Of 256 mesiodentes, the direction of the crown of the mesiodens was inverted in 172 (67%), in a normal direction in 69 (27%) and in a horizontal direction with regard to the tooth axis in 15 (6%). Of the 147 mesiodentes for which axial radiography was performed, 131 (89%) were located at a palatal site against the dental arch, 16 (11%) overlapped the dental arch and none were at a labial site. Of our 200 cases, a delay of eruption of the permanent central incisor was seen in 12 (6%), malposition or rotation of the central incisor in 5 (2.5%) and dentigerous cyst formation arising from mesiodens in 22 (11%). Marked movement of the mesiodens was seen in 10 cases during the follow-up period of 5-7 years. Some complication arising from mesiodens was seen in 19.5% of all cases in our research. Conclusion: Although mesiodentes are not caused by malocclusion, they may cause it. A long period of impaction of mesiodentes may bring about dentigerous cyst formation or movement of the mesiodentes.

Original languageEnglish
Pages (from-to)125-127
Number of pages3
JournalDentomaxillofacial Radiology
Issue number2
Publication statusPublished - Mar 2004


  • Complication
  • Dentigerous cyst
  • Mesiodens
  • Unerupted

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Radiology Nuclear Medicine and imaging
  • Dentistry(all)


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