A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . Upper and lower jaws of a negro skull, showing considerableprognathism. The illustration Fig. 14 is from a slide kindly loaned by Dr. I. N. Broomell,from a photograph of a negro skull which is in his possession. The reason forshowing this picture is the fact that various authors give it as an illustration ofnormal occlusion of the teeth, omitting to state that it is from the negro race—in 70 PART III. BASIC PRINCIPLES OF PRACTICE other words, that it belongs to a race more or le
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . Upper and lower jaws of a negro skull, showing considerableprognathism. The illustration Fig. 14 is from a slide kindly loaned by Dr. I. N. Broomell,from a photograph of a negro skull which is in his possession. The reason forshowing this picture is the fact that various authors give it as an illustration ofnormal occlusion of the teeth, omitting to state that it is from the negro race—in 70 PART III. BASIC PRINCIPLES OF PRACTICE other words, that it belongs to a race more or less prognathic. The occlusion ofthe anterior teeth shows that it belongs to this type of skull; it is a fine specimen,except that the upper second and third molars do not occlude typically with thelower third molars, even according to the negro type. Fig. 15 is a side view made from an almost perfect skull of a white teeth are so nearly typical in occlusion that but a fev/ persons have foundany fault with the specimen. The incisor teeth may possibly protrude too much Fig. Side view of upper and lower jaws of a Caucasian skull, showing typical occlusionof the teeth. to be in harmony with some Caucasian faces. The teeth, especially the anteriorones, must be in harmony with the general ovitline of the face and lips. In thegeneral occlusion it will be found that each tooth of the upper jaw comes intocontact with two teeth of the lower jaw, except the third molar, while each toothof the lower jaw comes into contact with two of the upper teeth, except the cen-tral incisors. The interlocking of the premolars and the molar teeth is ideal. Some orthodontists speak of moving the teeth inward, outward, forward,or backward, as though they were dealing with plain porcelain teeth set up inwax on a mechanical articulator, without taking into consideration the anatomy,physiology, or pathological conditions presented in the jaws or the general system. The writer can readily unde
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
