Objective: To evaluate effects of the nylon composite resin periodontal splint(NCR) and the fiber-reinforced composite periodontal splint(FRC) on fixing the labial loosen teeth.

• 目的:评价尼龙丝加复合树脂牙周夹板和超强玻璃纤维加流动树脂牙周夹板在前牙松牙固定术中的临床效果。