[Protrusive condyle path in edentulous patients].
The inclinations of condyle path of 32 edentulous patients were measured by taking protrusive relation record at the protrusive positions of 2, 4, 6, and 8 mm. The relations between the condylar shift and the protrusive distance were analysed. It was found that the inclination of condyle path was varied with individual, sex and protrusive distance. The shape of protrusive condyle path was like a section of parabola curved forward and downward. The results demonstrate that a small free gliding area in centric occlusion is necessary in complete dentures to fit the physiological movement of temporomandibular joints. The position of rotation center of protrusive movement requires further study.
Shi
S G
SG
School of Stomatology, Fourth Military Medical University, Xian.
D000368:Aged; D016302:Centric Relation; D003767:Dental Occlusion, Balanced; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D007575:Jaw, Edentulous / Q000473:pathology* / Q000503:physiopathology; D008297:Male; D008335:Mandibular Condyle / Q000473:pathology*; D008409:Mastication / Q000502:physiology; D008875:Middle Aged; D013704:Temporomandibular Joint / Q000502:physiology*