Objective to investigate the effect of labial periodontal of PFM crown after clinical tooth preparation used by dental magnifier.
目的本研究旨在探讨使用牙科放大镜临床牙体预备后对金瓷冠唇侧牙周状况的影响。
Objective: To evaluate the clinical of using prefabricated cylindrical root canal pin to lengthen the clinical crown and restoring anterior tooth and premolar defect with PFM.
目的：评价应用预成圆柱形根管钉对前牙牙体缺损患者冠再接后烤瓷修复体的临床效果。
Abstract: Objective to explore the clinical efficacy of making union crown restoration with adjacent tooth after hemisection to repair and retain molar teeth.
摘要目的探讨牙半切除术后与邻牙联冠修复保留磨牙的临床疗效。
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