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【单选题】
关于牙本质龋细菌侵入层,以下说法错误的是:( )
A.
牙本质扩张，可排列成串珠状
B.
此层细菌量较少
C.
受损的相互融合形成大小不等的坏死灶
D.
坏死灶内充满坏死的基质残屑和细菌
E.
牙本质小本质
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