Results 81 to 90 of about 1,392,043 (408)

Prevalence of Dental Anomalies in Orthodontic Patients

open access: yesČeská Stomatologie a Praktické Zubní Lékařství, 2013
Aim: The aim of the present study was to assess the prevalence of dental anomalies and associations among them in Czech orthodontic patients and to verify possible association between the prevalence of dental anomalies and gender.
P. Černochová, L. Izakovičová Hollá
doaj   +1 more source

Prevalence of Third Molar Agenesis: Associated Dental Anomalies in Non-Syndromic 5923 Patients

open access: yesPLoS ONE, 2016
The aim of this study was to investigate the prevalence of third molar agenesis and other associated dental anomalies in Bangladeshi population and to investigate the relationship of other dental anomalies with the third molar presence/agenesis.
M. Sujon, M. Alam, S. Rahman
semanticscholar   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Les dents moustériennes de la grotte Boccard, lieu-dit Bas-de-Morant (commune de Créancey, Côte-d'Or, Bourgogne)

open access: yesBulletins et Mémoires de la Société d’Anthropologie de Paris, 2008
The Boccard cave is located in the Créancey municipality of the Côte-d’Or. A clear stratigraphy has been defined with a Mousterian layer in which three human permanent teeth were discovered: a lateral upper left incisor, an upper second right premolar ...
Bruno Maureille   +4 more
doaj   +1 more source

Dental Tissue and Stem Cells Revisited: New Insights From the Expression of Fibroblast Activation Protein-Alpha

open access: yesFrontiers in Cell and Developmental Biology, 2020
Fibroblast activation protein-α (FAPα) is a membrane protein with dipeptidyl-peptidase and type I collagenase activity and is expressed during fetal growth.
Ronald B. Driesen   +19 more
doaj   +1 more source

Comparative Wear and Friction Analysis of Sliding Surface Materials for Hydrostatic Bearing under Oil Supply Failure Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
Hydrostatic bearings excel in high‐precision applications, but their performance hinges on a continuous external supply. This study evaluates various material combinations for sliding surfaces to mitigate damage during supply failures or misalignment and to discover the most effective materials identified for enhancing the reliability and efficiency of
Michal Michalec   +6 more
wiley   +1 more source

Dental caries characteristics in the first permanent molar in school age children.

open access: yesMedisur, 2009
Background: Dental caries is one of the main health problems in children. The first permanent molar presents caries more frequently than any other. Objective: To describe the characteristics of dental caries in the first permanent molars in children ...
Yoel González Beriau   +3 more
doaj  

EVALUATION OF THE APICAL SEALING ASSOCIATED WITH MAXILLARY FIRST MOLARS RADICULAR MORPHOLOGY USING CONE BEAM COMPUTED TOMOGRAPHY

open access: yesCumhuriyet Dental Journal, 2020
Objectives: To evaluate the grade of apical sealing associated with the root morphology of‬ maxillary ‬first ‬molars with ‬conventional endo-treatments ‬using cone bean computed tomography (‬CBCT).‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬
Luis Arriola-guillén   +5 more
doaj   +1 more source

Temperature-dependent thermal expansivities of silicate melts: The system anorthite-diopside [PDF]

open access: yes, 1992
The temperature-dependent thermal expansivities of melts along the join anorthite-diopside have been determined on glassy and liquid samples using a combination of calorimetry, dilatometry, and Pt double bob Archimedean densitometry.
Dingwell, Donald B.   +2 more
core   +1 more source

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