Mishra, S., Kumar, M., Goyal, M., & Kushwah, A. (2021). Determination of Optimal Loading Conditions Using Lever Arm and Mini- Implant System for En-masse Retraction in Lingual Orthodontics – A FEM Study. UNIVERSITY JOURNAL OF DENTAL SCIENCES, 7(1). https://doi.org/10.21276/ujds.2021.7.1.2