Results 81 to 90 of about 92,493 (309)

Antagonistic interaction between Ezh2 and Arid1a coordinates root patterning and development via Cdkn2a in mouse molars

open access: yeseLife, 2019
Patterning is a critical step during organogenesis and is closely associated with the physiological function of organs. Tooth root shapes are finely tuned to provide precise occlusal support to facilitate the function of each tooth type.
Junjun Jing   +9 more
doaj   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Accurate Finite Element Modeling Method of Herringbone Gear based on Multipoint Constraint Method

open access: yesJixie chuandong, 2022
A sufficiently refined mesh at the stress position is the basis for finite element analysis of gears to obtain accurate tooth surface contact stress and tooth root bending stress.
Guanwang Geng, Wei Liu, Qingsong Zhang
doaj  

The relationship between form and function of the carnivore mandible

open access: yesThe Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Biomechanical Analysis Of Maxillary Posterior Tooth Intrusion By Clear Aligners

open access: yesInternational Dental Journal
Aim or purpose: To analyze the stress concentration region and tooth displacement in maxillary posterior tooth intrusion by clear aligners. Materials and methods: A finite element model of maxillary dentition, periodontal ligaments, and clear aligners ...
Houwen Pan, Lingyong Jiang
doaj   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part I Reproducibility of diet inference using different instruments

open access: yesThe Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has become a well‐established method for dietary inference and reconstruction in both extant and extinct mammals and other tetrapods. As the volume of available data continues to grow, researchers could benefit from combining published data from various studies to perform meta‐analyses.
Daniela E. Winkler, Mugino O. Kubo
wiley   +1 more source

A influência de dentifrícios com agente dessensibilizante na dor induzida por clareamento dental de consultório [PDF]

open access: yes, 2012
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Programa de Pós-Graduação em OdontologiaO objetivo deste estudo foi avaliar se o uso de dentifrícios dessensibilizantes antes e após as sessões de clareamento ...
Thiesen, Carlos Henrique
core  

Horizontal/Oblique Root Fractures in the Palatal Root of Maxillary Molars with Associated Periodontal Destruction: Case Reports

open access: yes, 2011
Aim To report two cases of palatal root fracture in maxillary molars that were successfully managed in the short term by root canal treatment and root amputation. Summary In the first case, a 48-year-old woman with bony destruction and a deep periodontal
林秋君;蔡宜玲;李偉明;林俊彬;鄭景暉   +1 more
core   +1 more source

Micro-CT study of the influence of orthodontic force on the root resorption and orthodontic tooth movement

open access: yes口腔疾病防治, 2016
Objective To analyze the tooth movement distance and root resorption in rats under different orthodontic forces, to explore the effect of orthodontic force on the root resorption during orthodontic tooth movement.Methods 64 male Sprague Dawley (SD) rats ...
WU Chang-jing
doaj   +1 more source

Tooth row allometry in domestic rabbits and nondomestic lagomorphs: Evidence for a decoupling of body and tooth row size changes in evolutionary time

open access: yesThe Anatomical Record, EarlyView.
Domestic rabbits of different body sizes differ disproportionately in the length of their tooth row or the length of their diastema. Abstract In various domestic mammals, smaller breeds tend to have proportionally larger teeth, whereas this is not a universal trend across mammals.
Ursina L. Fasciati   +3 more
wiley   +1 more source

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