Objective To summarize and to evaluate the clinical effect of planting overdentures about the application of different types of attachments. Methods Twenty-eight cases of edentulous patients were chosen, who used attachments with the types of magnetic, lever cassette, telescopic crown and cap-type, and to evaluate the clinical effect of the attachments. All of the patients were followed up. X-ray and intra-oral examination were performed to observe the bone resorption of the implant and the condition of soft tissue. The satisfaction and complication of patients, who used four different types of attachment, was investigated by means of questionnaire. Results All plants were stabilization, except one patient with magnetic attachments. Statistical analysis showed that there were no significant differences in the resorption of bone, gingival index and the evaluation with different types of attachments﹙P＞0.05﹚. There were significant differences in total satisfaction of the problems of retention and stability of dentures, masticatory efficiency and comfort（P＜0.05﹚. Conclusion All types of attachment with support of plants are stabilization and comfort, masticatory function enhanced and the evaluation of satisfaction improved. It also elevates the edentulous patients’quality of survival.
