Santoso, D. S., C. Christnawati, and C. A. Farmasyanti. “The Difference Between Begg and Straightwire Appliances on Molar Position, Occlusal Plane Angle, and Anterior and Posterior Facial Height Changes”. Dental Journal, vol. 53, no. 4, Dec. 2020, pp. 223-8, doi:10.20473/j.djmkg.v53.i4.p223-228.