Severe alveolar bone resorption is also usually possible to make dentures and wear dentures. However, before making dentures, it is necessary to do alveolar synostosis reconstruction and labiobuccal sulcus extension, etc., so that the denture can get enough retention to exercise normal chewing function. 1. Alveolar reconstruction: Severe alveolar bone resorption is often due to insufficient bone volume, which does not allow the denture to obtain good retention. Alveolar synostosis reconstruction can increase the width and height of the jawbone through alveolar synostosis reconstruction, provide supporting hard tissues for the denture, restore the intermaxillary distance and ideal facial features, and make the denture well retained. 2. Lip and cheek groove extension: also known as lip and cheek groove deepening. It is to surgically change the attachment position of the mucosal muscle and move it towards the base of the alveolar process, which is equivalent to increasing the height of the alveolar ridge, so that the contact area between the denture base and the alveolar process can be increased, which increases the retention and stability of the denture. When serious alveolar bone resorption patients need to make dentures, they should consult the doctor in time, and then make denture after corresponding treatment under the guidance of professional doctors, in order to get good retention and function.