“…However, only a few clinical 18,19,24,25,27,29,39,58 and experimental 12,21,26,34,[43][44][45][50][51][52] imaging studies have been published that attempt to quantify the process of bone regeneration by DO in the craniofacial skeleton. At the contrary, the orthopaedic DO literature provides a variety of objective imaging techniques 23 to quantify the mineralization process in the regenerate, such as photo densitometry of standard X-rays 3,15,42 , digital radiography 28 , quantitative computer tomography (QCT) 4,22,36,41,53,54 , dual-photon absorptiometry 35,55 and dual-energy X-ray absorptiometry (DEXA) 11,[14][15][16][17]20,31,36,37,56 , ultrasonography 10,15,30,38,57 , quantitative technetium scintigraphy 5,33,…”