Mathematical outline-analysis of eminence and fossa of the TMJ of Cercopithecus aethiops (Cercopithecidae, primates, Mammalia).
The contours of the eminence and the fossa of the temporomandibular joint (TMJ) of Cercopithecus aethiops, a monkey species, are analyzed in sagittal-vertical sections. The functionally relevant contours can be approximated by catenates for both the eminence as the protrusive guidance and the fossa as the retrusive guidance. This study reveals the more general character of the contour formula y = a cosh(x/a) - a. This may be true because all these catenates are similar to one another and since they can be found in the guiding contours of the components of the stomatognatic system in man as well as in Cercopithecus aethiops.
Department of Orthodontics, University of Göttingen, FRG.
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D
Kubein-Meesenburg
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R
Ewers
H
H
Nägerl
A
A
Jäger
R J
RJ
Radlanski
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G
Sattler
D000818:Animals; D002521:Cercopithecus / Q000033:anatomy & histology*; D002522:Chlorocebus aethiops / Q000033:anatomy & histology*; D008433:Mathematics; D013704:Temporomandibular Joint / Q000033:anatomy & histology*