Results 121 to 130 of about 65,220 (299)

Different post-curing methods influence dimensional accuracy of additively manufactured permanent crowns

open access: yes
Purpose / Aim: To evaluate the influence of different post-curing methods, type of light curing machines and temperatures on the dimensional accuracy of additively manufactured (3D-printed) permanent crown resins.
Liu, X   +4 more
core   +1 more source

Catalysis by a Metastable Photoswitchable Cage

open access: yesAngewandte Chemie International Edition, EarlyView.
A self‐assembled heteroleptic cage is formed by isomerizing a photoswitchable ligand to its metastable Z‐isomeric form (Z‐1) using green light and combining with a non‐switchable ligand (2) and palladium(II) ions. The metastable [Pd2(Z‐1)2(2)2]4+ cage is an out‐of‐equilibrium self‐assembled catalyst, and can be reversibly assembled and disassembled ...
Simona S. Capomolla   +6 more
wiley   +1 more source

Investigation of the Effects of Different Polishing Methods on Tooth Surfaces in Smokers: An In Vitro Study

open access: yesGalician Medical Journal
Introduction. This in vitro study aimed to compare the enamel and root surfaces of teeth between smokers and non-smokers after scaling with hand instruments and to evaluate surface characteristics of smokers’ teeth after applying different polishing ...
Ezgi Gurbuz   +3 more
doaj   +1 more source

Marginal fit of all-ceramic crowns fabricated using two extraoral CAD/CAM systems in comparison with the conventional technique

open access: yes, 2017
Fawaz Alqahtani1,2 1Department of Prosthodontics, 2Higher Education and Scientific Research, School of Dentistry, Prince Sattam Bin Abdul-Aziz University, Al-kharj, Saudi Arabia Objective: The purpose of this study was to determine the effect of two ...
Alqahtani F
core  

The Effectiveness of Zirconia Crowns Versus Metal Crowns in Anterior Teeth: In vitro Study

open access: yes
Background: The selection between Zirconia crowns and metal crowns for anterior teeth restorations is pivotal in prosthodontics due to their distinct properties.
Naji Ahmad Alharethi
core   +1 more source

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

open access: yesThe Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

The Crystal Crown [PDF]

open access: yesMayo Clinic Proceedings, 2019
Hasan Ahmad Hasan Albitar   +1 more
openaire   +2 more sources

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

open access: yesThe Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro   +1 more
wiley   +1 more source

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