Results 61 to 70 of about 56,019 (269)

Root Resorption in Relation to Orthodontic Tooth Movement

open access: yesActa Medica, 2006
Root resorption is an undesirable sequela of orthodontic tooth movement. The odontoclasts are responsible for root resorption and the process of hyalinization is known to preceed the orthodontic root resorption.
Chaitra Ramanathan, Zdeněk Hofman
doaj   +1 more source

Hydrogen isotopic evidence for early oxidation of silicate Earth [PDF]

open access: yes, 2019
The Moon-forming giant impact extensively melts and partially vaporizes the silicate Earth and delivers a substantial mass of metal to Earth's core. Subsequent evolution of the magma ocean and overlying atmosphere has been described by theoretical models but observable constraints on this epoch have proved elusive.
arxiv   +1 more source

A Bio‐Inspired Perspective on Materials Sustainability

open access: yesAdvanced Materials, EarlyView.
This perspective discusses natural materials as inspiration for sustainable engineering designs and the processing of materials. First, circularity, longevity, parsimony, and activity are presented as essential material paradigms. The perspective then uses many examples of natural and technical materials to introduce principles such as oligo ...
Wolfgang Wagermaier   +2 more
wiley   +1 more source

Aggregation in carbon dots

open access: yesAggregate, Volume 3, Issue 6, December 2022., 2022
Carbon dots (CDs) has excellent photoluminescence properties. Aggregation plays an important role in both the formation of CDs and their fluorescence, yet is seldom studied in detail. This review aims to fill this knowledge gap. We first discuss how aggregation leads to the formation of different types of CDs, and the impact on morphology, luminescence,
Yi Ru   +2 more
wiley   +1 more source

Root Resorption in Orthodontics

open access: yesTurkish Journal of Orthodontics, 2016
Root resorption has been the subject of many studies, and it can be caused by many factors such as the mechanics used during orthodontic treatment, factors related to the type and magnitude of the force, and other factors related to treatment such as the
Furkan Dindaroğlu, Servet Doğan
doaj   +1 more source

Orthodontic movement in deciduous teeth

open access: yesDental Press Journal of Orthodontics, 2015
Deciduous teeth exfoliate as a result of apoptosis induced by cementoblasts, a process that reveals the mineralized portion of the root while attracting clasts. Root resorption in deciduous teeth is slow due to lack of mediators necessary to speed it up;
Alberto Consolaro
doaj   +1 more source

Bone Remodeling as a Spatial Evolutionary Game [PDF]

open access: yesarXiv, 2016
Bone remodeling is a complex process involving cell-cell interactions, biochemical signaling and mechanical stimuli. Early models of the biological aspects of remodeling were non-spatial and focused on the local dynamics at a fixed location in the bone.
arxiv  

Strategies for Controlling Emission Anisotropy in Lead Halide Perovskite Emitters for LED Outcoupling Enhancement

open access: yesAdvanced Materials, EarlyView.
The rise of lead halide perovskite semiconductors has enabled high‐performance LEDs with internal quantum efficiencies approaching 100%. In order to further enhance the external quantum efficiencies limited by light outcoupling effects, in this account, the strategies for reducing energy dissipation through the substrate, waveguide, and evanescent ...
Tommaso Marcato   +2 more
wiley   +1 more source

Influence of alveolar bone thickness and bucco-palatal inclination on root resorption of lateral incisors in unilateral maxillary impacted canines: a retrospective observational study

open access: yesBMC Oral Health
Background This study aimed to investigate the potential associations between alveolar bone thickness, bucco-palatal inclination of maxillary lateral incisors, and lateral incisor root resorption in patients with unilateral maxillary impacted canines ...
Weiman Sun   +4 more
doaj   +1 more source

A phase field approach to trabecular bone remodeling [PDF]

open access: yesarXiv, 2017
We introduce a continuous modeling approach which combines elastic responds of the trabecular bone structure, the concentration of signaling molecules within the bone and a mechanism how this concentration at the bone surface is used for local bone formation and resorption.
arxiv  

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