Clinical trials

The goal of this study is to investigate the clinical efficacy of different maxillary sinus floor elevation procedures based on maxillary sinus anatomy. The main questions it aims to answer are: * How does the anatomical morphology of maxillary sinus affect postoperative bone resorption? * How to select the appropriate maxillary sinus floor elevation procedure based on maxillary sinus anatomy? Preoperative, immediate postoperative, and six-month postoperative CBCT images of patients undergoing translateral maxillary sinus floor elevation or hydraulic transcrestal maxillary sinus floor elevation will be measured.

This goal of this single-blind, simple randomized, positive-controlled prospective study is to evaluate the effects of additive-manufactured personalized titanium mesh and traditional titanium mesh in guided bone regeneration for large alveolar bone defects. The study will assess the short-term and long-term efficacy, safety, and incidence of complications of the additive-manufactured personalized titanium mesh, along with an analysis of risk factors. Participants will be followed up for two years after surgery with free-of-charge clinical and radiographic examinations.