A low‐cost, easy‐to‐build, and portable bite‐force transducer for birds

2021 ◽  
Author(s):  
Julieta Carril ◽  
Federico J. Degrange ◽  
Ricardo S. De Mendoza ◽  
Claudia P. Tambussi
Keyword(s):  
Low Cost ◽  
Force Transducer ◽  
Bite Force

Jaw Bite Force Measurement Device

2012 ◽  
Vol 38 (4) ◽  
pp. 361-364 ◽  
Author(s):  
Dennis Flanagan ◽  
Horea Ilies ◽  
Brendan O'Brien ◽  
Anne McManus ◽  
Beau Larrow
Keyword(s):  
Dental Implant ◽  
Force Measurement ◽  
Low Cost ◽  
Cost Effective ◽  
Force Transducer ◽  
Bite Force ◽  
Prosthetic Design ◽  
Diagnostic Aid ◽  
Size Number ◽  
Implant Size

We describe a cost-effective device that uses an off-the-shelf force transducer to measure patient bite force as a diagnostic aid in determining dental implant size, number of implants, and prosthetic design for restoring partial edentulism. The main advantages of the device are its accuracy, simplicity, modularity, ease of manufacturing, and low cost.

Bite force and jaw biomechanics in the subterranean rodent Talas tuco-tuco (Ctenomys talarum) (Caviomorpha: Octodontoidea)

2011 ◽  
Vol 89 (4) ◽  
pp. 334-342 ◽  
Author(s):  
Federico Becerra ◽  
Alejandra Echeverría ◽  
Aldo Iván Vassallo ◽  
Adrià Casinos
Keyword(s):  
Cross Section ◽  
Force Transducer ◽  
Bite Force ◽  
Adult Males ◽  
Subterranean Rodent ◽  
Soil Hardness ◽  
Ctenomys Talarum ◽  
Adductor Muscles ◽  
Typical Habitat

The Talas tuco-tuco ( Ctenomys talarum Thomas, 1898) is a South American subterranean rodent that digs using both forelimbs and incisors, the latter being used when animals face hard soils and fibrous roots. In this rodent, the incisors are also used during intermale competition for mates. Bite forces were measured on wild females (n = 21) and males (n = 21) (both adult and young individuals) using a force transducer. Bite force was significantly higher in adult males than in females (32 vs. 27 N, respectively). Bite forces calculated on the physiological cross-section of jaw adductor muscles in dissected specimens were slightly higher than in vivo measurements. Regressions against body mass showed that bite force scaled with positive allometry, with slopes of 0.89 (females) and 0.99 (males). No significant differences were observed, neither in the slope nor in the y intercept of both sexes’ equations; therefore intersexual differences in bite forces observed in adults should mainly be due to size dimorphism. Considering that soil hardness of C. talarum’s typical habitat averages 100 N/cm2, and taking into account incisor’s cross-section, it was assessed that the pressure exerted by jaw adductor muscles at the incisors level is three times higher than that required for soil penetration.

scholarly journals Masticatory force and electromyographic activity of the mandibular elevators muscles in different rehabilitation treatments.

2019 ◽  
Vol 22 (3) ◽  
pp. 387-394
Author(s):  
Isabela Silva Gomes Moura ◽  
Leonardo Silva Gomes Kamezawa ◽  
Eduardo Galera Da Silva ◽  
Jose Benedito Oliveira Amorim ◽  
Guilherme Schmitt De Andrade ◽  
...  
Keyword(s):  
Statistical Difference ◽  
Great Influence ◽  
Force Transducer ◽  
Bite Force ◽  
Control Group ◽  
Electromyographic Activity ◽  
Muscle Coordination ◽  
Rest Position ◽  
Human Motor ◽  
Masticatory Force

The masticatory function is one of the most complex neuropsychological mechanisms in human motor performance and it depends on several factors, such as bite force, muscle coordination, morphology, and number of teeth in occlusion. Purpose: to evaluate the influence of different rehabilitation treatments such as complete and partial dentures, masticatory forces, and the dynamics of mandibular elevator muscles. Material and Methods: the maximum bite force (force transducer) and electrical activity (superficial electromyography) associated with the masseter and temporal muscles were quantified. These factors were evaluated at rest position and isometric contraction. The data were subjected to descriptive statistics and compared based on the experimental groups, through ANOVA and Tukey’s tests. Results: for bite force, the ANOVA test showed statistical difference between groups and Tukey’s test showed that the force measured in the removable partial dentures group was 44.75% lower than that of the control group, while for complete denture wearers, there was a reduction of 74.4% in bite force in relation to the control group. For electromyographic activity, there was no statistical difference between groups. Pearson’s correlation test (α=5%) showed positive correlation between the variables of bite force and electromyographic activity only for the control group. Conclusion: it was concluded that the loss of dental elements and their replacement with either partial or complete dentures has a great influence on bite force and electromyographic activity of the masseter and temporal muscles.

Development of a bite force transducer for measuring maximum voluntary bite forces between individual opposing tooth surfaces

2020 ◽  
Vol 109 ◽  
pp. 103846
Author(s):  
L. Jansen van Vuuren ◽  
W.A. Jansen van Vuuren ◽  
J.M. Broadbent ◽  
W.J. Duncan ◽  
J.N. Waddell
Keyword(s):  
Force Transducer ◽  
Bite Force ◽  
Tooth Surfaces

scholarly journals Quantifying bite force in coexisting tayassuids and feral suids: a comparison between morphometric functional proxies and in vivo measurements

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11948
Author(s):  
Fernando L. Sicuro ◽  
Luiz Flamarion B. Oliveira ◽  
Carla D. Hendges ◽  
Carlos Fonseca
Keyword(s):  
Feeding Habits ◽  
Low Cost ◽  
Bite Force ◽  
Field Conditions ◽  
Good Correspondence ◽  
Simple Task ◽  
Measuring Tube ◽  
Feral Hogs ◽  
Brazilian Pantanal

Background Measuring mammals’ bite force in laboratory conditions is not a simple task, let alone on wild medium-sized mammals in the field. Thus, morphometric-proxies are usually used to infer morphofunctional properties of musculoskeletal features. For instance, the study of bite force-indexes suggests that different capacities to crack food items reduce the competition between coexistent collared and white-lipped peccaries (Pecari tajacu and Tayassu pecari). The presence of exotic feral hogs (Sus scrofa) in peccaries’ endemic areas gives rise to new ecological interactions between them. An example is the Brazilian Pantanal wetland, where ecomorphological mechanisms may play a role in their ecological relations. Taking this scenario as a case of study, we aimed to verify if the morphometric-proxies are de facto reliable tools, by comparing bite forces-indexes with the in vivo bite forces of these species. Methods We captured 21 collared and white-lipped peccaries and feral hogs in the Brazilian Pantanal to assess their bite force at first molar. The Bite Force Measuring Tube (BiTu) is a robust and simple mechanical device designed to be used in field conditions. Only 11 individuals successfully bit the BiTu before being released. Their body measurements were compared and correlated with their bite force. The in vivo bite forces were compared with bite force-indexes of two papers based on independent morphometric methods and datasets: Sicuro & Oliveira (2002) used classic morphometrics to infer the bite forces of these three species in the Brazilian Pantanal, and Hendges et al. (2019) used geometric morphometrics to compare bite forces-indexes and feeding habits of the extant peccary species. The results of all species were standardized (Z-curves) according to each method. Doing so, we obtained comparable dimensionless comparable values but maintaining the differences between them. Results The morphometric-proxies-based studies presented similar results: collared peccaries present weaker bites than white-lipped peccaries and feral hogs, while these two species presented no significant differences in their bite force-indexes. The in vivo bite force results suggest the same relations predicted by the morphometric models, including the high variation among the feral hogs. We found a significant correlation between the individuals’ weight (kg) and their actual bite force (N) but no significant correlations with the head length. Conclusions The BiTu proved to be a functional and low-cost tool to measure bite force in field conditions. The in vivo results presented a good correspondence with the predictions based on morphometric-proxies by Sicuro & Oliveira (2002) and Hendges et al. (2019). The results denote that these studies succeed in capturing the biomechanical signal of the three species’ skull-jaw systems. This empirical validation confirms that these morphometric-proxies analyses are reliable methods to ecomorphological and evolutionary inferences.

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