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Relationship between tooth macrowear and jaw morphofunctional traits in representative hypercarnivores.
PeerJ
November 2024
Department of Biological Sciences and Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, Tennessee, United States.
The mammalian adult dentition is a non-renewable resource. Tooth attrition and disease must be accommodated by individuals using behavioral, physiological, and/or musculoskeletal shifts to minimize impact on masticatory performance. From a biomechanical perspective, the musculoskeletal system becomes less efficient at producing bite force for a given amount of muscle input force over an individual's life, because tooth-food contact area increases as cusps wear.
View Article and Find Full Text PDFHand-Jaw Coordination as Mice Handle Food Is Organized around Intrinsic Structure-Function Relationships.
J Neurosci
October 2024
Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, 60611.
Rodent jaws evolved structurally to support dual functionality, for either biting or chewing food. Rodent hands also function dually during food handling, for actively manipulating or statically holding food. How are these oral and manual functions coordinated? We combined electrophysiological recording of muscle activity and kilohertz kinematic tracking to analyze masseter and hand actions as mice of both sexes handled food.
View Article and Find Full Text PDFDriving Stress-Induced Effects on the Orofacial Region and Its Functions and Health Behaviors in Riyadh: A Cross-Sectional Survey.
Healthcare (Basel)
August 2024
Department of Oral Maxillofacial Surgery and Diagnostic Sciences, College of Medicine and Dentistry, Riyadh Elm University, Riyadh 11681, Saudi Arabia.
Driving stress is a multifaceted phenomenon, and the experience of driving invokes stress. Driving causes the activation of stress-response mechanisms, leading to short-term and long-term stress responses resulting in physiological and behavioral changes. The aim of this study was to evaluate driving stress-initiated effects on orofacial functions and health behaviors in the Riyadh population.
View Article and Find Full Text PDFMastication and oral myofunctional status in excess weight children and adolescents: A cross-sectional observational study.
J Oral Rehabil
November 2024
Department of Biomedical and Clinical Science, University of Milan, Milan, Italy.
Background: Masticatory function seems to play a role in the aetiology of obesity. However, literature on the association between oral myofunctional status and overweight and obesity in children and adolescents is scarce and contrasting.
Objective: To compare masticatory performance, orofacial myofunctional status and tongue strength and endurance between children and adolescents with overweight and obesity and those with normal weight.
Burrowing for answers: Investigating Syrian hamster welfare through owner surveys.
Vet Rec
November 2024
Bristol Veterinary School, University of Bristol, Bristol, UK.
Background: Syrian hamsters are a relatively common pet species in the UK. However, we know very little about how they are kept. The aim of this study was to identify areas of good and poor practices among Syrian hamster owners using owner surveys.
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