TY - BOOK AU - Nagani, Nasreen Iqbal AU - Ahmed, Imtiaz ED - Dow University of Health Science TI - Effectiveness of two types of fixed lingual retainers in preventing mandibular incisor relapse: a randomized clinical trial SN - 9789696850915 PY - 2019/// CY - Karachi KW - Master of Dental Surgery KW - Orthodontics ER -