Abstract
Molar-incisor malformation (MIM) or molar root-incisor malformation (MRIM) is a dental anomaly that affects molar teeth and maxillary central incisors. Even though, the etiology is not exactly known, it has been reported that several factors such as staphylococcal infection in the neonatal period, neurological diseases such as meningitis and hydrocephalus, ongoing medications, infectious diseases and premature delivery were effective. In this case report, the clinical and radiographic characteristics of 3 cases with MIM were specified. Early diagnosis and follow up of MIM is of great importance and there is a need for a multidisciplinary treatment approach in MIM.
Highlights
Dental anomalies may affect crown and roots separately or together
The prevalence of Molar-incisor malformation (MIM) has not been definitely identified yet and it commonly appears in first permanent molars (PFMs), it may emerge in the primary second molar teeth, rare (Neo et al, 2019).The typical findings of molar teeth with MIM are malformed roots that appear hypoplastic, incomplete or short and narrowed, and narrowed crowns from the cervical portion, reduced ceiling-floor distance in pulp chamber and a slit-shaped image of pulp chamber in the radiography
Roots of the PFMs and left mandibular second primary molars were shortened and narrowed, pulp chambers were slit-shaped and their crowns showed a sudden narrowing on the cervical portions (Figure 2)
Summary
Dental anomalies may affect crown and roots separately or together. They may occasionally impact complete denture as well as they may emerge in a single tooth or multiple teeth simultaneously. Molar-incisor malformation (MIM) (Lee et al, 2014) or molar root-incisor malformation (MRIM) (Wright et al, 2016) is a dental anomaly that has been first described in 2014 in the literature and that affects molar teeth and maxillary central incisors. Narrowed crowns of maxillary central teeth towards cervical portion and/or groove-like enamel defects may appear (Lee et al, 2014; Wright et al, 2016; Neo et al, 2019; Vargo et al, 2020). Clinical and radiographic features of 3 cases with MIM are presented
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