eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2017-09-25 10 3 1379 1383 10.13005/bpj/1242 16255 article Laishram Monisha 1 Waikhom Arvind 2 Orthodontics and Dentofacial Orthopedics. Oral and Maxillofacial Surgery. The most important question to the clinician is whether it is warranted to extract a single lower incisor in borderline cases. In the present case report, in order to resolve the minor crowding, a lingually placed lower incisor has been extracted and also the soft tissue profile was maintained. Lower incisor extraction is indicated in the carefully selected cases,especially where space requirement do not call for greater dento-alveolar movement. https://biomedpharmajournal.org/vol10no3/wilson-quad-helix-expansion-and-uncommon-extraction-of-mandibular-incisor-a-case-report/ Asymmetric extraction Crowding Cross Elastics Lower incisor Quad Helix