. The Dental cosmos. half that size,that is to say, 20 degrees. The sliding face of the palatal sur-face of the upper incisors stands alsoin relation to the condyle path and tothe compensation angle. A sliding sur-face of 80 degrees corresponds to a pathof half that size, viz, 40 degrees, and acompensation angle of one-quarter, viz,20 degrees; The overbite of the incisors is also A MO EDO.—OCCLUSION AND THE CONDYLE PATH. 411 subordinated to the same angles. A pathof 40 degrees corresponds with a lap-ping-over of the incisors of 2£ mm. When there is no inclination of thecondyle path—that is to
. The Dental cosmos. half that size,that is to say, 20 degrees. The sliding face of the palatal sur-face of the upper incisors stands alsoin relation to the condyle path and tothe compensation angle. A sliding sur-face of 80 degrees corresponds to a pathof half that size, viz, 40 degrees, and acompensation angle of one-quarter, viz,20 degrees; The overbite of the incisors is also A MO EDO.—OCCLUSION AND THE CONDYLE PATH. 411 subordinated to the same angles. A pathof 40 degrees corresponds with a lap-ping-over of the incisors of 2£ mm. When there is no inclination of thecondyle path—that is to say, when thecondyle executes the protrusive move-ment horizontally, the incisors will ar-ticulate end-to-end, without overbite. masticatory surface of the upper oneswill be inclined toward the cheeks, andthose of the lower ones toward the pal-ate. (See Fig. 3.) These anatomical data are accountedfor by the physiology of the dentalarches. Thus, when the subject make- amovement of prehension with the in- Fig. Protruding movement of the jaw. The condyle has come down from the glenoidcavity and has come forward, bringing the meniscus* with it, so that themovement has taken place in the menisco-temporal articulation. The sec-ond lower molar has also come down and forward, and is in contact withthe distal portion of the first molar. The lower incisors have also comedown and forward and their cutting edges are in contact with those of theupper incisors. The other teeth do not occlude in this protruding move-ment; the left side of the articulation and of the dental arches presentsimultaneously the same disposition. (These three points of contact ofthe teeth were discovered bv Bonwill.) The molar cusps and the direction oftheir occlusal surfaces stand also in directrelation to the condyle path. A veryinclined path corresponds with longcusps; the upper ones have their occlu-sal surfaces very much inclined outwardand downward, and the lower ones up-ward and inward; that is to sa
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
