Types of crowns include the full porcelain crown, the porcelain-fused-to-metal crown, and the all-metal crown.
牙冠类型包括全瓷牙冠、陶瓷金属结合牙冠和全金属牙冠。
Porcelain crown deposition compared to other all-ceramic crowns before the biggest advantages is the precision and the best combination of strength, the results would be better looking.
瓷沉积冠相比以前其他全瓷牙冠最大的优点就是精密性和强度大的最好结合，美观效果也比较好。
Objective To compare the esthetic effect and the change of periodontal tissue in restoring anterior teeth with porcelain fused to metal crown and all ceramic crown.
四环素变色牙、釉质发育不全、死髓变色牙、牙体间隙及牙体缺损缺失等因素均能够影响牙体或牙列的功用和美观，后者在前牙区尤其突出。
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