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上颌窦底壁的分嵴是上颌窦底壁皮质骨的突起,把上颌窦底壁分成两个或多个窦腔。该分嵴有可能起源于上颌窦和牙齿的生长发育阶段,称之为原发性分嵴;也可能是牙齿缺失后上颌窦气化导致上颌窦底壁形态的改变所致,称炎为继发性分嵴。不同学者用不同的方法研究了这一结构,发现大约13%到35.3%的上颌窦底壁存在分嵴,该分嵴可以存在于上颌窦底壁的任意位置,高度在2.5mm到12.7mm之间,也有学者报告了上后牙缺失后上颌窦底壁的分嵴发生率大于没有缺失上后牙。上颌窦底壁分嵴这一解剖结构在种植牙的上颌窦提升术中有重要意义,手术方案应充分考虑到这一解剖结构的影响。
The ridge of the maxillary sinus wall is the protrusion of the cortical bone of the maxillary sinus floor, dividing the maxillary sinus wall into two or more sinuses. The ridge may originate in the maxillary sinus and tooth growth and development stage, called the primary ridge; may also be caused by maxillary sinus gasification after maxillary sinus gasification caused by changes in the shape of the bottom wall, said inflammation following Hairline ridge. Different scholars have studied this structure in different ways and found that about 13% to 35.3% of the maxillary sinus wall exists sub-ridge, the ridge can exist in any position of the bottom wall of the maxillary sinus with a height of 2.5mm to 12.7mm Between, there are also scholars reported on the maxillary sinus floor after the loss of posterior crista of the division of the incidence of ridges than the absence of the upper teeth. The anatomical structure of maxillary sinus basal cristae is of great importance in maxillary sinus augmentation for dental implants. The surgical plan should fully consider the influence of this anatomical structure.