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Treatment of the Ectopic Eruption of the Mandibular First Permanent Molar With D-Loop: A Case Report
Qiannan Deng1, Zhengyuan Chen1, Yao Meng1
1Department of Orthodontics Shenzhen Children's Hospital Shenzhen Guangdong China.
Clinical Case Reports
|October 13, 2025
Abstract:
Early diagnosis and timely intervention in ectopic eruption of permanent first molars can prevent premature loss of second primary molars. The novel spring named "D-loop" offers a simple, lab-free, and effective method for molar distalization, preserving arch integrity even in cases with significant root resorption.

