LIAO Lan a,SHI Lian-shui a,WANG Jun b,ZHU Hong-shui a,ZHOU Ru-jun a(a.Department of Prosthodontics,the Affiliated Hospital of Stomatology;b.Department of Stomatology,the Second Affiliated Hospital,Nanchang University,Nanchang 330006,China)
Abstract：Objective To investigate the force changes of the retention of cast clasps,resin clasps and wire embedding resin clasps in virto.Methods The cast clasps,resin clasps and wire embedding resin clasps were made.The tribrachia clasp retainer in the distal of
2008, Vol. 9 