Ramamurthy S, Ramaswamy S, Thirunavukarasu S, Sujithsivarajan D. Management of maxillary midline diastema in early mixed dentition by 2×2 appliance. POJ [Internet]. 2011 Dec. 31 [cited 2026 Feb. 12];3(2):65-8. Available from: https://www.poj.org.pk/index.php/poj/article/view/52