ABSTRACT
Objective:To study the characteristics of condylar path in the patients with severe dental attrition.Methods:Using D5A De nar fully adjustable articulator and the Pantronic recording system, the kinemat ic character of condylar paths of 15 patients with severe occlusal attrition was investigated. In addition, the effects of posterior condylar determinants on oc clusal rehabilitation were studied in 5 cases. Results: The mean intercondylar distance of the patients was (60.72?4.40) mm, and the immediate side shift (ISS) was 1.35 mm(right)and 1.24 mm(left),the progressive si de shift (PSS) were 14.65 degrees (right) and 17.11 degrees (left),respectively. The Pantronic protrusive condylar guidance (PRO) were 23.45 degrees (right) and 26.85 degrees (left); The Pantronic nonworking path (ORB) was 26.50 degrees and the Fisher angle was present between protrusive path and nonworking path. In th e 5 cases of occlusal rehabilitation ISS, PSS and Panotronic reproducibility ind ex (PRI) were decreased.Conclusion: Occlusal rehabilitation main ly affect ISS, PSS and PRI.