Any of various brightly colored tropical Marine fishes, especially of the family Scaridae, having fused teeth resembling a parrot's beak.
多中亮色的热带海鱼中的任一种，尤指鹦嘴鱼科的鱼，长有类似鹦鹉喙的牙齿。
Objectives: To observe the result of the application of the porcelain-fused-metal removable partial dentures (PFMRPD) for anterior teeth.
目的：观察烤瓷熔附金属可摘局部义齿(PF MRPD)在前牙修复中应用的临床效果。
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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