Jaw mechanism modeling and simulation

An update about artificial mastication

“…A second example of a mechatronic chewing device is of particular relevance since it can reproduce the entire suite of complex functions and movements involved during mastication, encompassing most of oral applications [16,17]. The main objective of this device was to propose a 'chewing robot' (Figure 2a) able to reproduce a molar trajectory in actual dimensions [18,19,20 ]. Aside from the area of food science, dentistry and specialists in dental materials developed tools to evaluate fatigue, resistance, wear or behaviour of restorative pieces under mechanical testing as close as possible to in vivo oral conditions [21][22][23].…”

Development and validation of a mastication simulator

“…Others oriented towards mechanical properties make no attempt to reproduce the conditions in which foods are prepared within a closed mouth (Hoebler et al, 2002;Usui et al, 2003;Conserva et al, 2008). Mathematical models have also been proposed (Kato et al, 1988;Peleg and Normand, 1982;Van der Bilt et al, 1992;Daumas et al, 2005;Pap et al, 2005).…”

The action of the masticatory muscles and cranial changes in pigs as results of domestication

“…The sum of these lines of action in both the masseter and temporalis are always divergent in all mammals due to general skull morphology (Daumas, Xu and Bronlund 2005). The purpose of this study is not to identify these lines of action, but to see if, due to their general direction -the result of these lines of action -the chewing force differentially applied for harder of softer foods may affect jaw deformation (Langenbach and van Eijden 2001;Langenbach et al 2002) in the case of wild pigs and domestic pigs.…”

“…Although there are many muscles involved to one degree or another in the process of mastication (Daumas, Xu, and Bronlund 2005;Fehrenbach and Herring 2002;Ghetie 1971, Gorniak 1985, we have focused on the two muscles whose action elevates the mandible: 1) the masseter, which is the largest, most powerful, and most active masticatory muscle, and, 2) the temporalis, which, due to its origin, is the masticatory muscle directly related to the cranial region.…”