[Clinical study of masticatory efficiency of removable partial denture with SJ-1 type bolt attachment].

OBJECTIVE: Measurement and analysis of patients wearing dentures with SJ-1 type bolt attachments. METHODS: Select sixteen patients with free end edentulous spaces, restore with removable dentures using SJ-1 type bolt attachments,measure the masticatory efficiency using light-absorption method,and compare them with those of normal occlusion and traditional removable partial dentures. RESULTS: (1)One week after the dentures delivered,the average absorption value of these sixteen patients was 0.876,three weeks later 0.859,one month later 0.985. There was no significant difference among them. (2)Compared with those of normal occlusion, P>0.05,no significant difference;with those wearing traditional dentures, P<0.01,high significant difference. CONCLUSION: The matiscatory efficiency of the patients wearing dentures with SJ-1 type bolt attachments was much better than those of tradition al removable partial dentures.