The etiology of osseous deformities of the head, face, jaws and teeth . Fig. Fig. 199. 198.) If the cuspids erupt simultaneously the pressure exertedis uniform, and there is less liability to irregularity. One mayerupt normally while the other may be abnormal in position. IRREGULARITIES PRODUCED BY THE MALPOSITION OFBICUSPIDS. The shape of the crown of the bicuspid particularly endan-gers it to irregularities of position. The antero-posteriordiameter of its outer cusp is greater in proportion than thatof the inner, having a wedge-shaped space on the palatal side. 446 ETIOLOGY OF OSSEOUS
The etiology of osseous deformities of the head, face, jaws and teeth . Fig. Fig. 199. 198.) If the cuspids erupt simultaneously the pressure exertedis uniform, and there is less liability to irregularity. One mayerupt normally while the other may be abnormal in position. IRREGULARITIES PRODUCED BY THE MALPOSITION OFBICUSPIDS. The shape of the crown of the bicuspid particularly endan-gers it to irregularities of position. The antero-posteriordiameter of its outer cusp is greater in proportion than thatof the inner, having a wedge-shaped space on the palatal side. 446 ETIOLOGY OF OSSEOUS DEFORMITIES OF This causes it to touch at one point the tooth in front and backof it, and makes rotation upon its axis easy. Irregularitiesare chiefly limited to the second bicuspid for reasons thatbecome apparent when we consider their causes. Like irregularities of other teeth, irregularities of bicus-
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjecthead, bookyear1894
