The effects of chewing rates on mandibular kinematics

2001 ◽  
Vol 28 (4) ◽  
pp. 328-334 ◽  
Author(s):  
G. S. Throckmorton ◽  
B. H. Buschang ◽  
H. Hayasaki ◽  
T. Phelan
Keyword(s):  
Chewing Rates ◽  
Mandibular Kinematics

scholarly journals In Vitro and In Vivo Assessment of a New Workflow for the Acquisition of Mandibular Kinematics Based on Portable Tracking System with Passive Optical Reflective Markers

2021 ◽  
Vol 11 (9) ◽  
pp. 3947
Author(s):  
Marco Farronato ◽  
Gianluca M. Tartaglia ◽  
Cinzia Maspero ◽  
Luigi M. Gallo ◽  
Vera Colombo
Keyword(s):  
Measurement Error ◽  
Tracking System ◽  
Intraclass Correlation ◽  
Optical Tracking ◽  
Optical Tracking System ◽  
Rater Reliability ◽  
Tracking Device ◽  
Mandibular Kinematics

Clinical use of portable optical tracking system in dentistry could improve the analysis of mandibular movements for diagnostic and therapeutic purposes. A new workflow for the acquisition of mandibular kinematics was developed. Reproducibility of measurements was tested in vitro and intra- and inter-rater repeatability were assessed in vivo in healthy volunteers. Prescribed repeated movements (n = 10) in three perpendicular directions of the tracking-device coordinate system were performed. Measurement error and coefficient of variation (CV) among repetitions were determined. Mandibular kinematics of maximum opening, left and right laterality, protrusion and retrusion of five healthy subjects were recorded in separate sessions by three different operators. Obtained records were blindly examined by three observers. Intraclass correlation coefficient (ICC) was calculated to estimate inter-rater and intra-rater reliability. Maximum in vitro measurement error was 0.54 mm and CV = 0.02. Overall, excellent intra-rater reliability (ICC > 0.90) for each variable, general excellent intra-rater reliability (ICC = 1.00) for all variables, and good reliability (ICC > 0.75) for inter-rater tests were obtained. A lower score was obtained for retrusion with “moderate reliability” (ICC = 0.557) in the inter-rater tests. Excellent repeatability and reliability in optical tracking of primary movements were observed using the tested portable tracking device and the developed workflow.

Ingesta particle size, food handling and ingestion in the tammar wallaby (Macropus eugenii Desmarest)

1999 ◽  
Vol 47 (1) ◽  
pp. 75 ◽  
Author(s):  
R. G. Lentle ◽  
K. J. Stafford ◽  
M. A. Potter ◽  
B. P. Springett ◽  
S. Haslett
Keyword(s):  
Particle Size ◽  
New Zealand ◽  
Particle Size Distribution ◽  
Stomach Contents ◽  
Tammar Wallaby ◽  
Food Handling ◽  
Macropus Eugenii ◽  
Food Particles ◽  
Chewing Rates ◽  
Free Ranging

The particle size distribution of stomach contents from 25 tammar wallabies (Macropus eugenii Desmarest) shot in the Okataina State Forest and adjoining farmland near Rotorua, New Zealand, were determined. There was a greater percentage of finer, and a smaller percentage of larger, particles than reported in the stomach contents of larger macropods. The chewing and biting activities of four free-ranging tammars fitted with radio-microphone collars were monitored. Chewing rates (chews per minute) were similar to those of other small herbivorous vertebrates. There were significantly lower rates of chewing and higher chew-to- bite ratios when browsing than when grazing. Observations of browsing by three captive tammars showed inefficient handling by mutually opposed palms and digitopalmar grip, resulting in low rates of ingestion. We suggest that tammars lower the time necessary for fermentation of food by reducing the size of food particles, and that their choice between graze and browse is influenced by food handling and chewing investment.

Chewing Rates Resistant to Age-Related Slowing and may be Novel Rehabilitation Technique for Rhythmic Cuing

2018 ◽  
Vol 99 (10) ◽  
pp. e99
Author(s):  
Brittany Samulski ◽  
Jessica Prebor ◽  
Cortney Armitano ◽  
Steven Morrison
Keyword(s):  
Age Related ◽  
Chewing Rates

A method for measuring three-dimensional mandibular kinematics in vivo using single-plane fluoroscopy

2012 ◽  
Vol 42 (1) ◽  
pp. 20110326-20110326 ◽  
Author(s):  
C.-C. Chen ◽  
C.-C. Lin ◽  
Y.-J. Chen ◽  
S.-W. Hong ◽  
T.-W. Lu
Keyword(s):  
Three Dimensional ◽  
Single Plane ◽  
Mandibular Kinematics

Mandibular kinematics associated with simulated low-velocity rear-end impacts

2006 ◽  
Vol 33 (8) ◽  
pp. 566-575 ◽  
Author(s):  
I. A. HERNANDEZ ◽  
K. R. FYFE ◽  
G. HEO ◽  
P. W. MAJOR
Keyword(s):  
Low Velocity ◽  
Mandibular Kinematics

Mandibular kinematics represented by a non-orthogonal floating axis joint coordinate system

2003 ◽  
Vol 36 (2) ◽  
pp. 275-281 ◽  
Author(s):  
Joseph K. Leader ◽  
J.Robert Boston ◽  
Richard E. Debski ◽  
Thomas E. Rudy
Keyword(s):  
Coordinate System ◽  
Joint Coordinate System ◽  
Mandibular Kinematics

scholarly journals Additive Manufacturing and Dentistry: Designing a Semi-Physiological Articulator

2018 ◽  
Vol 6 (1) ◽  
pp. 1-9
Author(s):  
François-Xavier Santolalla ◽  
Etienne Debarre ◽  
Philippe Hivart
Keyword(s):  
Additive Manufacturing ◽  
Rapid Prototyping ◽  
Second Generation ◽  
Time Constraint ◽  
Dental Office ◽  
Effective Use ◽  
Mandibular Kinematics

Introduction: The use of second generation semi-adjustable articulators for the reproduction of the mandibular kinematic often proves to be a technical and time constraint for the dentist. Therefore, its use, however essential within the dental office, is frequently forsaken. Materials and methods: The possibility of reproducing complex anatomical forms using rapid prototyping technologies can induce a more attractive and effective use of such a modified articulator. Results & Conclusion: Indeed, these replicas substitute for mechanical adjustments and thereby make the metrology on the patient an unnecessary element, both sources of the approximation of the kinematic. The aim of this study is to report on designing and manufacturing a semi-physiological articulator and on its pertinence through the comparison of the mandibular kinematics movement reproducibility on the two types of articulator.

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