ABSTRACT
BACKGROUND: Removable partial denture is the main way of repairing dentition defects, and its casting materials mainly include pure titanium, cobalt-chromium al oy and Vital um 2000. OBJECTIVE: To analyze the biocompatibility of removable partial dentures made of different materials in repair of dentition defects. METHODS: Total y 120 patients with dentition defects, aged 24-68 years old, were enrol ed and underwent repair with removable partial dentures. Among these patients, 40 patients were treated with cobalt-chromium al oy-casted removable partial dentures, 40 patients with pure titanium-casted removable partial dentures, and 40 patients with Vital ium 2000 casted removable partial dentures. Al patients were fol owed up for 2 years. The chewing efficiency, coagulation, thrombosis, alveolar bone loss, patient satisfaction, and the incidence of adverse reactions, such as abutments periodontal disease and secondary caries were compared between these three groups. RESULTS AND CONCLUSION: (1) Chewing efficiency and patient satisfaction rate: Vital um 2000 group > titanium group > cobalt-chromium al oy group (P < 0.05). (2) Coagulation, thrombosis, the incidence of alveolar bone loss: Vital um 2000 group < titanium material group < cobalt-chromium al oy group (al P < 0.05). (3) Incidence of adverse reactions: Vital um 2000 group < titanium group