“…The mandible itself, however, is subjected to strains more typical of the postcranial skeleton (Throckmorton et al, 1992). Bone of dermal origin also differs from bone of endoskeletal origin in its behavior as a grafting material (Smith and Abramson, 1974;Zins and Whitaker, 1983;Kusiak et al, 1985;Moskalewski et al, 1988Moskalewski et al, , 1991Scott and Hightower, 1991;Scott et al, 1994;Sasano et al, 1995) (Baylink et al, 1993). For example, cultured human mandibular osteoblasts produce more fibroblast growth factor and insulin-like growth factor, but less transforming growth factor beta, than human iliac cells (Kasperk et al, 1995).…”