| Popis: |
Many sites contribute to the multidirectional growth of the nasomaxillary complex, a three-dimensional mosaic of bones and cavities. In these three dimensions of space, however, the nasomaxillary complex grows differentially in both time and rate and is closely correlated with growth of the mandible. Additional sites of growth for the maxillary complex are the maxillary tuberosities and sutures which are found only in the skull. A number of nonsurgical and surgical experiments, conducted primarily on young and some adult animals, were designed to assess growth changes in relation to the nasomaxillary complex. Lateral cephalometric radiographs were taken on the Broadbent-Bolton cephalometer at monthly intervals. The zygomaticotemporal and zygomaticomaxillary sutures were related to anteroinferior movement, and the frontomaxillary and frontozygomatic sutures contributed most to the downward movement of the face. The chapter talks about normal growth and contrasts the gross differential effect of surgical trauma upon postnatal growth with respect to the nasal bones and to the cartilaginous nasal septum. |
