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2026, 19(2):
129-135.
DOI: 10.19538/j.kq.2026.02.001
Molar-root incisor malformation（MRIM）is a dental development anomaly，primarily characterized by developmental defects in the roots of affected molars and the cervical region of anterior tooth crowns，which not only compromise anterior esthetics but also lead to clinical complications，such as pulp and periapical diseases. Currently，the etiology of MRIM remains undetermined. In clinical practice，personalized treatment plans should be developed for each case，involving sequential treatment through multidisciplinary collaboration. This article provides a comprehensive overview of the etiology，clinical and radiographic characteristics，histological features，diagnostic criteria，and management strategies for MRIM，aiming to offer evidence-based recommendations for clinical diagnosis and treatment.
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