Evidence Collection of a Tooth Mark in a Crime Scene: Importance of the Dental Materials in Forensic Dentistry

Accuracy of bite mark analysis from food substances: A comparative study

“…[ 10 ] The physical characteristics of bite mark which contributes to uniqueness include the shape of the dental arch, distance between canines, presence of a tooth out of alignment, spacing between teeth, rotation of teeth, missing teeth, the curves of biting edges and wear patterns. [ 1 3 ] Hence, the premise of bite mark analysis is that human dentition is unique and that this asserted uniqueness[ 11 ] is replicated on the bitten substrate in sufficient detail to enable a match[ 12 ] to the individual under suspicion.…”

“…The bitten food substance was then stored in a refrigerator in a sealed plastic bag[ 1 ] within an hour. Then, the impression of the bite mark on apple, cheese and chocolate was made using light body addition silicone (Affins) by gently injecting from a center point to periphery[ 1 3 4 ] using the plastic gun. It was then picked up with a heavy body silicone (Affins) and poured with die stone (Samit) to obtain the positive replica of the bitten surface[ 1 3 4 ] on apple [ Figure 1 ], cheese [ Figure 2 ] and chocolate [ Figure 3 ].…”

The Role of Forensic Dentistry for Identification of a Criminal Sexual Assault: A Casework Report

“…After was collected the impression of the bite mark area ( Figure 3) with two different consistency of a silicone material, the light consistency and the putty consistency, the last one to avoid the deformation of the light elastomeric consistency material that gives the definition of the dental details of the bite mark [5].…”

“…Intra oral examination included the examination of tongue for size and function, periodontal examination and condition of teeth were noted [6] (Figure 5). Two impressions of each arch with ADA (American Dental Association) specified material is followed by obtaining dental casts with type II stone [5].…”

The Effect of Mixing Technique and Methods on Some Physical Properties of Dental Stone

“…(1) The dental impression and model materials are very important to preserve the physical evidence present on crime scene such as shoeprints tire marks and inanimate materials such as cheese to later on compare with the teeth of a suspected and make a conclusion. (2)(3)(4) For casting threedimensional prints, two main techniques for mixing the dental stone with water are usually applied:…”