Bite mark (Fig. 8.1) evidence found on the skin of a living person or a dead body and on objects may be of great importance in criminal and legal investigations (Vale 1986). The method for comparing the bite marks is well recognized and includes measurement and analysis of the pattern, size, and shape of teeth against similar characteristics observed in an injury on skin or a mark left on an object (ABFO 1995). The most frequent analysis methods are used to produce life-sized comparison overlays from a suspect’s teeth to detect similarities or differences with the bite mark. Various methods exist to produce these overlays; in most techniques, the perimeter of the biting edges of the suspect’s teeth are hand-traced directly from dental study casts or from wax bite exemplars, or indirectly from xerographic images produced with office ­photocopiers that are calibrated to produce life-sized final images. But these methods cannot avoid the bias innate in observer subjectivity, and significant errors incorporated in the overlays may make it difficult to reach conclusions with a high degree of confidence in court and medical legal proceedings. Therefore, the AFBO has proposed an objective method using Adobe Photoshop® (ABFO 1995). Since biting is a forceful procedure involving three moving systems—the maxilla, the mandible and the victim’s reaction—most recent research has focused on analyzing how these factors affect the bite mark with the application of 3D procedures (Thali et al. 2003; Martin-de las Heras et al. 2005). The functional tools within Photoshop® can be used to detect and correct for certain angular distortions. This is an extremely important step, as it forms the foundation for the comparison procedures that follow (Johansen and Bowers 2003).