Abstract: Maxillary sinus lifting is an effective method to solve the lack of bone volume in the maxillary posterior area. At present, there are many classification methods of maxillary bone volume deficiency, but they cannot directly guide the clinical operation of maxillary sinus lifting. Plasmatrix is a kind of autologous blood extract, which can effectively improve the effect of tissue regeneration and is widely used in the field of maxillofacial tissue regeneration. In this review, we talk about the existing classification of maxillary posterior bone volume deficiency, introduce new classification of maxillary posterior bone volume deficiency based on clinical operation, and the application of plasmatrix in different types of maxillary sinus lifting and the augmentation of maxillary posterior bone defect, to providing a new solution for oral clinicians in maxillary sinus floor lifting.

Key words: sinus floor elevation, Plasmatrix, maxillary posterior area, bone defects classification