Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Intermolecular Forces03:13

Intermolecular Forces

71.9K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
71.9K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

76.0K
Dipole Moment of a Molecule
76.0K
VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

85.4K
Overview of VSEPR Theory
85.4K
Molecular Shapes01:18

Molecular Shapes

62.5K
Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
62.5K
Electromotive Force02:36

Electromotive Force

30.3K
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled  that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc  with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...
30.3K
First Derivatives and the Shape of a Graph01:22

First Derivatives and the Shape of a Graph

89
In calculus, the concept of the first derivative plays a crucial role in understanding the behavior of a function over its domain. The first derivative, denoted as f’(x), provides insight into how a function changes at any given point, much like a cyclist adjusting speed along a winding trail. By analyzing the first derivative, mathematicians can determine where a function is increasing, decreasing, or reaching critical points.The first derivative provides a precise method for classifying...
89

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A taphonomic reassessment of Qafzeh 25 and its implications for violence, health and funerary practices.

Scientific reports·2026
Same author

What If the External Crown Surface of Teeth Could Predict the Pulp Chamber? A DeepSDF-Based Approach.

International endodontic journal·2026
Same author

Reconstructing Lifeways and Social Differentiation in the Pre-Pottery Neolithic B Population of Nahal Yarmuth 38, Central Israel.

American journal of biological anthropology·2026
Same author

Biomechanics of the tooth cervical region investigated using 3D digital image correlation, micro CT, and finite element analysis.

Scientific reports·2026
Same author

Previously undocumented regional variability in crab-eating macaque skull sexual dimorphism and its implications for biological and morphometric studies.

Anatomical record (Hoboken, N.J. : 2007)·2026
Same author

3D-Printed Titanium Implants with Bioactive Peptide-Polysaccharide Scaffolds for Personalized Bone Reconstruction.

Advanced healthcare materials·2026

Related Experiment Video

Updated: Feb 11, 2026

Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models
04:13

Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models

Published on: September 27, 2024

890

Human mandibular shape is associated with masticatory muscle force.

Tanya Sella-Tunis1,2, Ariel Pokhojaev1,2,3, Rachel Sarig2,3

  • 1Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.

Scientific Reports
|April 18, 2018
PubMed
Summary

Mandibular shape is influenced by masticatory muscle forces. Larger muscle size correlates with specific mandibular features, suggesting overall shape is a better indicator of muscle force than linear measurements.

More Related Videos

Temporomandibular Joint Pain Measurement by Bite Force and Von Frey Filament Assays in Mice
06:37

Temporomandibular Joint Pain Measurement by Bite Force and Von Frey Filament Assays in Mice

Published on: September 13, 2024

2.0K
Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers
11:30

Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers

Published on: June 16, 2015

26.3K

Related Experiment Videos

Last Updated: Feb 11, 2026

Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models
04:13

Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models

Published on: September 27, 2024

890
Temporomandibular Joint Pain Measurement by Bite Force and Von Frey Filament Assays in Mice
06:37

Temporomandibular Joint Pain Measurement by Bite Force and Von Frey Filament Assays in Mice

Published on: September 13, 2024

2.0K
Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers
11:30

Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers

Published on: June 16, 2015

26.3K

Area of Science:

  • Anthropology
  • Biomechanics
  • Anatomy

Background:

  • The relationship between masticatory muscle forces and mandibular morphology is crucial for understanding human evolution and clinical conditions.
  • Previous studies have explored this link, but a comprehensive analysis using advanced imaging and morphometric techniques is needed.

Purpose of the Study:

  • To investigate the influence of masticatory muscle cross-sectional areas (CSAs) on mandibular shape and dimensions.
  • To determine if overall mandibular shape or linear measurements are better predictors of masticatory muscle force.

Main Methods:

  • Computed tomography (CT) scans of 382 adults were used to measure masseter and temporalis muscle CSAs.
  • Geometric morphometric analysis was performed on 62 mandibles from young adults.
  • Two-block partial least squares analysis assessed the association between mandibular shape and muscle CSAs.

Main Results:

  • A significant association was found between larger muscle CSAs and a wider, more trapezoidal ramus, a more massive coronoid process, a rectangular body, and a curved basal arch.
  • Linear mandibular measurements showed low correlations with muscle CSAs.
  • Overall mandibular shape proved to be a more reliable indicator of muscle force than linear measurements.

Conclusions:

  • Mandibular shape is significantly influenced by the forces exerted by masticatory muscles.
  • Geometric morphometrics and overall mandibular shape are superior to linear measurements for retrodicting masticatory muscle force and loading.
  • This finding has implications for clinical, anthropological, and evolutionary studies of the mandible.