The function one case exfolicate,one case black line of gingival.Conclusion Select adaptabitility rationally,the restorative procedure of PFM is better in reparing pth...

• 结论:在合理选择适应证的前提下,金属烤瓷是修复各种病变上前牙的理想方法,可以获得良好的牙体形态、功能及美观。