Etching machine in normal operation, the first I put a feeding trial with engraved stainless steel plate, it will slow conveyor belt into the machine.
蚀刻机运转正常后，先在入料口放一块试刻用的不锈钢板，传送带会把它缓慢的送入机器内部。
Objective: To examine the adhere strength when using different etching agent in clinical operation.
目的：验证临床操作中不同酸蚀剂是否影响复合树脂对牙齿的粘结强度。
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