A two-year comparative assessment of retention of arch width increases between modified vacuum-formed and Hawley retainers: a multi-center randomized clinical trial

by Ashari A.; Nik Mustapha N.M.; Yuen J.J.X.; Saw Z.K.; Lau M.N.; Xian L.; Syed Mohamed A.M.F.; Megat Abdul Wahab R.; Yeoh C.K.; Deva Tata M.; Sinnasamy S.
Published in Progress in Orthodontics (2022)