磨牙Ⅱ度根分叉病变指在多根牙的一个或一个以上的根分叉区内已有骨吸收,但因为分叉区尚有未吸收的牙槽骨,使病变尚未与对侧相通。Ⅱ度根分叉病变是临床最常见的磨牙根分叉病变,刮治、根面平整刮治及根面平整是牙周病治疗的基础。但根分叉区域的刮治效果较差,这和此区域的局部解剖有关[1]。根分叉区域存在窄小的缝隙及根面凹,这些窄小的分 Molar II degree root bifurcation refers to the presence of bone resorption in one or more root bifurcation areas of multiple teeth, but because the bifurcated area has unabsorbed alveolar bone, the lesion has not yet been communicated with the contralateral side. Ⅱ degrees of root bifurcation lesions is the most common clinical root bifurcation lesions, cure, root surface scraping and root formation is the basis for treatment of periodontal disease. However, the root bifurcation of the poor cure, which is related to the regional anatomy [1]. Root fork area there is a narrow gap and root concave, these narrow points