A.上皮過(guò)度,已角化B.基底層液化變性,固有層淋巴細(xì)胞呈帶狀浸潤(rùn)C.顆粒層明顯,棘層肥厚D.上皮釘突呈不規(guī)則延長(zhǎng),有時(shí)呈鋸齒狀
A.解剖性根尖孔B.生理性根尖孔C.根尖分歧D.側(cè)支根管
A.2mmB.1.5mmC.1mmD.0.5mm