Results 111 to 120 of about 88,414 (284)

Shaping the human face: Periosteal bone modeling across ontogeny

open access: yesThe Anatomical Record, EarlyView.
Abstract Facial morphology is a defining aspect of Homo sapiens that distinguishes our species from fossil ancestors and plays a central role in estimating age, sex, and ancestry in both past and present populations. Understanding how the face develops during postnatal ontogeny is essential for interpreting adult facial variation.
Sarah E. Freidline   +5 more
wiley   +1 more source

Effect of Ovariectomy on Orthodontic Tooth Movement in Rats

open access: yesJournal of Islamic Dental Association of Iran, 2016
Background and Aim: Estrogen affects the metabolism in females. This study aimed to assess the effect of absence of estrogen on orthodontic tooth movement in rats.
Mohammad Amin Mackie   +5 more
doaj  

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

open access: yesThe Anatomical Record, EarlyView.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman   +11 more
wiley   +1 more source

Wood wasp inspired space and earth drill [PDF]

open access: yes, 2010
In this chapter, we explain why the low gravity encountered on Mars or on the Moon and the low mass of the probes, landers and rovers that carry drilling devices limit classical drilling techniques.
Coste, Pierre   +3 more
core  

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Post Oral Administration of Epigallocatechin Gallate from Camelia sinensis Extract Enhances Vascular Endothelial Growth Factor and Fibroblast Growth Factor Expression during Orthodontic Tooth Movement in Wistar Rats [PDF]

open access: yesJournal of Krishna Institute of Medical Sciences University, 2020
Background:East Java green tea leaf (Camelia sinensis) possesed active compound such as Epigallocatechin Gallate (EGCG) is well known for enhancing the bone remodelling through enhancement of Vascular Endothelial Growth Factor (VEGF) and Fibroblast ...
Fidiyah Inayati   +4 more
doaj  

A Hemispherical Contact Model for Simplifying 3D Occlusal Surfaces [PDF]

open access: yes, 2018
Statement of problem Currently, dental articulators can recreate mandibular movements and occlusal contacts. However, whether virtual articulators can also provide information about occluding dental surfaces, functional movements, and the mandibular ...
Carranza-Cañadas, Pilar   +4 more
core   +1 more source

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

open access: yesThe Anatomical Record, EarlyView.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey   +3 more
wiley   +1 more source

Accelerated Orthodontic Treatment using Biomodulation: A Randomized Clinical Trial

open access: yesJournal of Pharmacy and Bioallied Sciences
BackgroundOrthodontic treatment often spans several months or even years, which can be burdensome for patients. Biomodulation techniques have emerged as potential strategies to expedite orthodontic tooth movement.
Avirachan Tara V   +4 more
doaj   +1 more source

A new orthodontic force system for moment control utilizing the flexibility of common wires: Evaluation of the effect of contractile force and hook length

open access: yesJournal of the Formosan Medical Association, 2018
The application of an appropriate force system is indispensable for successful orthodontic treatments. Second-order moment control is especially important in many clinical situations, so we developed a new force system composed of a straight orthodontic ...
Wei-Jen Lai   +7 more
doaj   +1 more source

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