Human mandibular shape is associated with masticatory muscle force

109Citations
Citations of this article
156Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Understanding how and to what extent forces applied to the mandible by the masticatory muscles influence its form, is of considerable importance from clinical, anthropological and evolutionary perspectives. This study investigates these questions. Head CT scans of 382 adults were utilized to measure masseter and temporalis muscle cross-sectional areas (CSA) as a surrogate for muscle force, and 17 mandibular anthropometric measurements. Sixty-two mandibles of young individuals (20-40 years) whose scans were without artefacts (e.g., due to tooth filling) were segmented and landmarked for geometric morphometric analysis. The association between shape and muscle CSA (controlled for size) was assessed using two-block partial least squares analysis. Correlations were computed between mandibular variables and muscle CSAs (all controlled for size). A significant association was found between mandibular shape and muscle CSAs, i.e. larger CSAs are associated with a wider more trapezoidal ramus, more massive coronoid, more rectangular body and a more curved basal arch. Linear measurements yielded low correlations with muscle CSAs. In conclusion, this study demonstrates an association between mandibular muscle force and mandibular shape, which is not as readily identified from linear measurements. Retrodiction of masticatory muscle force and so of mandibular loading is therefore best based on overall mandibular shape.

References Powered by Scopus

Guidelines, Criteria, and Rules of Thumb for Evaluating Normed and Standardized Assessment Instruments in Psychology

7225Citations
N/AReaders
Get full text

Generalized procrustes analysis

2501Citations
N/AReaders
Get full text

Semilandmarks: A method for quantifying curves and surfaces

710Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Cone-Beam Computed Tomographic Assessment of the Mandibular Condylar Volume in Different Skeletal Patterns: A Retrospective Study in Adult Patients

43Citations
N/AReaders
Get full text

Evaluation of condylar cortical bone thickness in patient groups with different vertical facial dimensions using cone-beam computed tomography

41Citations
N/AReaders
Get full text

Genetic factors contributing to skeletal class III malocclusion: a systematic review and meta-analysis

39Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Sella-Tunis, T., Pokhojaev, A., Sarig, R., O’Higgins, P., & May, H. (2018). Human mandibular shape is associated with masticatory muscle force. Scientific Reports, 8(1). https://doi.org/10.1038/s41598-018-24293-3

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 58

73%

Researcher 10

13%

Professor / Associate Prof. 8

10%

Lecturer / Post doc 3

4%

Readers' Discipline

Tooltip

Medicine and Dentistry 29

47%

Agricultural and Biological Sciences 16

26%

Engineering 13

21%

Social Sciences 4

6%

Article Metrics

Tooltip
Social Media
Shares, Likes & Comments: 102

Save time finding and organizing research with Mendeley

Sign up for free