Abstract
BACKGROUND: To explore the correlation between restoration and retention of magnetic attachment overdenture and masticatory ability in elderly patients. METHODS: 200 elderly patients with most defects of dentition undergoing denture repair were selected, and with magnetic attachment retention repair in group A (n=70), with Taiji buckle attachment denture retention repair in group B (n=65), with removable partial denture repair in group C (n=65). The masticatory ability, abutment related indexes and the incidence of denture repair related complications in the three groups were compared, and the masticatory efficiency of patients with different magnetic attachment retention and repair effects before and after treatment was compared. RESULTS: The bite force, retention and masticatory efficiency of group A were higher than group B and C (P<0.05). After treatment, gingival index, bleeding index and mobility in group A were higher than group B and C, plaque index in group B were higher than group A and C (P<0.05). The masticatory efficiency of patients with good retention and repair effect of magnetic attachment before and after treatment of patients with general effect were better than patients with poor effect and there was a positive correlation (r=0.320, 0.398, P<0.05). CONCLUSIONS: Magnetic attachment overdenture is effective and safe in most elderly patients with dentition defects.