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Objective to evaluate the effects of reformatory PFM in clinic.
目的探讨改良式烤瓷冠的临床应用效果。
The PFM technology includes two kinds modes: constant width PFM and SWFM.
脉冲频率调制又包括了两种方式,即等宽pfm和SWFM。
Methods To reproduce the PFM with surface stain technique and watch results.
方法:对烤瓷冠采用外源性染色技术进行再加工,观察临床效果。
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