Ramamurthy, S., Ramaswamy, S., Thirunavukarasu, S. and Sujithsivarajan, D. (2011) “Management of maxillary midline diastema in early mixed dentition by 2×2 appliance”, Pakistan Orthodontic Journal, 3(2), pp. 65–68. Available at: https://poj.org.pk/index.php/poj/article/view/52 (Accessed: 9 April 2026).