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

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

doi:10.1016/j.oooo.2014.03.014

Cited by 46 publications

(120 citation statements)

References 32 publications

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“…24 In the present study, all of the patient's permanent first molars exhibited root malformation. It was suspected that the premature exfoliation and space loss of the upper deciduous second molars was caused by MIM of those teeth.…”

Section: Discussionmentioning

confidence: 45%

“…The teeth of this patient were diagnosed as having MIM based on the definition of this malformation provided by Lee et al 24 Those authors studied 12 patients with molar root and incisor malformation and defined MIM as a newly discovered type of dental anomaly with root malformations of the permanent first molars and deciduous second molars and crown defects in the incisors, which were associated with neurologic systemic disease at the age of 1 to 2 years after birth. 24 In the present study, all of the patient's permanent first molars exhibited root malformation.…”

Section: Discussionmentioning

confidence: 99%

“…There is also agreement regarding the symmetric location involving the permanent first molars. In addition, Lee et al 24 analyzed multiple cases and concluded that the lower permanent first molars are always involved and that in 50% of cases, there are associated symptoms in the deciduous second molars and upper central incisors. Both Witt et al 23 and the present study found hypermineralized tissues in a thickened pulpal floor and observed the tissues using SEM and transmission electron microscopy.…”

Section: Oral and Maxillofacial Pathology Oooomentioning

confidence: 99%

“…Witt el al. 23 reported a distinct form of root malformation associated with a cervical mineralized diaphragm (CMD), and Lee et al 24 named this condition molareincisor malformation (MIM), based on their discovery in 12 patients of a dental anomaly that was characterized by root malformation of the permanent first molars and deciduous second molars and a cervical notch in the permanent maxillary central incisors. The etiology of these symptoms is thought to be systemic diseases contracted at or medications taken at 1 to 2 years of age.…”

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confidence: 99%

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Microscopic analysis of molar–incisor malformation

Lee

Kim

et al. 2015

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Section: Discussionmentioning

confidence: 45%

Section: Discussionmentioning

confidence: 99%

Section: Oral and Maxillofacial Pathology Oooomentioning

confidence: 99%

mentioning

confidence: 99%

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Microscopic analysis of molar–incisor malformation

Lee

Kim

et al. 2015

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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“…In 2014, Witt et al described two cases of a new type of dental abnormality that radiographically resembled DD‐1b but only affected the permanent first molars. Later, Lee et al described 12 cases of this dental abnormality, which they named molar‐incisor malformation (MIM). Since its initial description, several reports and series have documented additional MIM cases involving the permanent first molars, permanent central incisors, and also other teeth …”

Section: Introductionmentioning

confidence: 99%

Molar‐incisor malformation: Eight new cases and a review of the literature

Vargo

Reddy

Costa

et al. 2019

Int J Paed Dentistry

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Background Molar‐incisor malformation (MIM) is a recently described dental abnormality. While MIM mimics dentin dysplasia, it presents in a localized pattern. Furthermore, it is speculated that MIM is caused by significant early‐life medical history. Aim The purpose of this study is to present a series of MIM cases and compare the findings with the literature. Design An extensive search of all published cases of MIM in the English‐language literature was conducted. Additionally, an institutional review board‐approved retrospective search was performed within the University of Florida oral pathology biopsy service archives. Radiographic consultation cases were also included. Cases lacking radiographs were excluded. Results Seventy‐nine cases were identified in the literature, and eight cases were identified in our retrospective search. All but one case involved the permanent first molars. The average age at diagnosis was 9 years. Many patients reported significant early‐life medical histories. Conclusions MIM usually affects the permanent first molars and may be linked to early‐life medical conditions or interventions. Oral healthcare providers, especially paediatric dentists, should be aware of MIM to avoid misdiagnosing it as dentin dysplasia. Long‐term follow‐up studies with thorough medical history documentation are essential to understand the pathogenesis and aetiology and to create treatment guidelines.

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