Abstract: Abstract: Objective To explore the clinical efficacy of sterngold attachment denture restoration of dentition defect.Methods 150 cases of patients with dentition defect in Department of Stomatology of our hospital from August 2008 to August 2011 were selected,and were divided into experimental group,control group 1 and control group 2 with 50 cases in each group using the random number table method.Patients of the experimental group were given sterngold attachment dentures,patients of control group 1 were given titanium alloy casting frame removable denture,and patients of control group 2 were given the ball type attachment denture.Before treatment and after 3,6,12,24 months were selected as the time nodes when the masticatory efficiency and the abutment periodontal index (gingival index and plaque index) of 3 groups of patients were tested and compared.Results There was no significant difference among masticatory efficiency,gingival index and plaque index of the 3 groups before treatment (P >0.05).At each time node after the treatment,the masticatory efficiency of 3 groups was significantly higher than that before treatment.There was no significant difference between control groups (P >0.05),while masticatory efficiency in the experimental group was significantly higher than that in both control groups,showing statistically significant difference (P <0.05).With the extension of time,chewing efficiency in two control groups decreased,while the experimental group did not decrease obviously.At each time node after treatment,the gingival index and plaque index in all groups increased significantly.The control groups showed no significant difference (P >0.05).The increase in the experimental group was not as much as that in control groups,and the difference was statistically significant (P <0.05).Conclusions Restoring dentition defect with sterngold attachment denture shows good masticatory function,which affects little the abutment periodontal tissue and has good tissue compatibility,is worthy of clinical application.

Key words: dentition defects, sterngold attachment denture, masticatory function, periodontal lesion