當病人在上顎後牙區骨頭沒有足夠的高度或厚度植牙時，就需要做鼻竇增高術，這個術式有很高的成功率，但也有很多的併發症，最常見的就是鼻竇穿孔，特別是上顎竇中隔存在時，因此，了解鼻竇中隔解剖結構及處理方式是相當重要的，如果不慎發生鼻竇穿孔，根據孔洞大小可以選擇修補及繼續手術，或是放棄手術，然而，在進行鼻竇增高術及同步植牙時，穿孔的鼻竇對植牙存活率是一個負面因子。

lift is a necessary procedure when patients do not have a sufficient quantity of bone tissue height or thickness for the placement of dental implants in the posterior maxilla. The procedure has a high percentage of success, but it presents a number of complications. The most frequent complication is the membrane perforation, especially in the presence of a maxillary sinus with septa. Therefore, it is important to understand the anatomy and handling of sinus septa. If a perforation exists, we can choose to repair the membrane and to proceed with the intervention, or to abandon the procedure, depending on the size of a perforation. However, it is a negative factor for survival rate when implants are placed in sinus lifts with perforated membrane.