Katragadda, D. S., Y. pudi, D. K. K. DODDA, and D. J. R. Bitra. “Cephalometric Evaluation of Lip Strain and Nasolabial Angle Changes Following Orthodontic Treatment With First Premolar Extractions”. UNIVERSITY JOURNAL OF DENTAL SCIENCES, Vol. 10, no. 4, Nov. 2024, doi:10.21276/ujds.2024.10.4.4.