Effect of Orthodontic Treatment on Delayed Polydonia in Rare Molar Area: A Case Report

doi:10.13701/j.cnki.kqyxyj.2026.02.013

Abstract

Abstract: Late-developing supernumerary teeth (LDST) refer to extra teeth that develop later than permanent teeth. They are rare in clinical practice and often occur in the premolars area. This article reports a rare case of LDST in the mandibular molar area. The tooth embryo was discovered after orthodontic treatment. Through one-year follow-up and imaging analysis, it was found that orthodontic force might affect its development by altering the local biomechanical environment. This study combines the mechanism of bone remodeling and clinical observation, and proposes that imaging monitoring should be strengthened for suspected cases, and individualized treatment plans should be adopted according to the position and development stage of the tooth germ.

Key words: late-developing supernumerary tooth, biomechanics, image analysis, malocclusion, tooth germ

QIN Jia, HOU Xianggang, YANG Jie, CAO Yani, LIU Chao, WU Jiaye, BAI Minghai. Effect of Orthodontic Treatment on Delayed Polydonia in Rare Molar Area: A Case Report[J]. Journal of Oral Science Research, 2026, 42(2): 157-161.

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