In designing the fixed bridge supported by tooth-implant, we can design telescope retainer on implant to reduce the stress of bone tissues around the implant and to prevent damages to bone tissues.
The comparative study of fixed versus removable retainer 36 patients were selected and comparative study which include periodontal implications and stabilizing effects was performed.
选取矫治将要结束病例36例，着重从牙周卫生与保持效果两个方面对活动与固定保持进行对比研究。
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ObjectiveThe full crown is mostly used for the tooths repair and retainer of fixed partial denture (FPD) in the clinical practice of prosthodontics.