A new type of dental anomaly: Molar-incisor malformation (MIM)

Hyo Seol Lee, Soo Hyun Kim, Seong Oh Kim, Jae Ho Lee, Hyung Jun Choi, Han Sung Jung, Je Seon Song

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A molar-incisor malformation (MIM) is a newly discovered type of dental anomaly of the permanent first molars, deciduous second molars, and permanent maxillary central incisors. MIM anomalies of the permanent first molars and deciduous second molars may include normal crowns with a constricted cervical region and thin, narrow, and short roots, whereas the affected maxillary central incisors may exhibit a hypoplastic enamel notch near the cervical third of the clinical crown. Although the etiology of MIM remains to be determined, it is thought to be attributable to an epigenetic factor linked to brain- and central nervous system-related systemic diseases at around age 1 to 2 years. MIM teeth are associated with clinical problems such as impaction, early exfoliation, space loss, spontaneous pain, periapical abscess, and poor incisor esthetics. Children with MIM teeth should be observed closely with respect to their medical history, and dentists should formulate a wider-ranging treatment plan.

Original languageEnglish
Pages (from-to)101-109.e3
JournalOral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Volume118
Issue number1
DOIs
Publication statusPublished - 2014 Jul

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oral Surgery
  • Pathology and Forensic Medicine
  • Dentistry (miscellaneous)
  • Radiology Nuclear Medicine and imaging

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