Results 171 to 180 of about 44,878 (304)

Loss of Tooth Structure After Successive Removal of Temporary Restorative Materials by Dental Students Between Endodontic Treatment Sessions: An In Vitro Study

open access: yesEuropean Journal of Dental Education, EarlyView.
ABSTRACT Objective The aim of this study was to evaluate the loss of tooth structure after the removal of temporary restorative materials between endodontic treatment sessions performed by undergraduate students. Methods Twenty human molar teeth underwent endodontic coronal access and were randomly divided into two groups.
Márcia Cunha   +5 more
wiley   +1 more source

Dynamic Capacity and Surface Fatigue Life for Spur and Helical Gears [PDF]

open access: yes
A mathematical model for surface fatigue life of gear, pinion, or entire meshing gear train is given. The theory is based on a previous statistical approach for rolling-element bearings. Equations are presented which give the dynamic capacity of the gear
Coy, J. J.   +2 more
core   +1 more source

Assessing the Credibility of ChatGPT on Temporomandibular Disorders

open access: yesEuropean Journal of Dental Education, EarlyView.
ABSTRACT Introduction Large Language Models such as ChatGPT are increasingly used in dental education; however, their credibility in clinical contexts remains uncertain. This study is aimed to analyse the credibility and efficacy of responses given by ChatGPT about temporomandibular disorders among dentists and dental students.
Hilal Yilanci   +2 more
wiley   +1 more source

Evaluation of physical, chemical, and color‐matching properties of monochromatic resin composites: An in vitro study

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract The objectives of this study are to evaluate, in vitro, the microhardness, sorption, solubility, color stability, and color‐matching ability of monochromatic resin composites: Palfique Omnichroma / Tokuyama (Mono1) and Vittra APS Unique / FGM (Mono2) compared with the conventional resin composite: Filtek Z250 XT / Solventum (Conv).
Ericka dos Santos Lopes   +5 more
wiley   +1 more source

Application of traction drives as servo mechanisms [PDF]

open access: yes
The suitability of traction drives for a wide class of aerospace control mechanisms is examined. Potential applications include antenna or solar array drive positioners, robotic joints, control moment gyro (CMG) actuators and propeller pitch change ...
Loewenthal, S. H.   +2 more
core   +1 more source

In situ evaluation of the bleaching efficacy of experimental hydrogen peroxide hydrogel with MnO‐doped Biosilicate activated by violet LED light

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract Hydrogen peroxide (HP) at 35% is effective for dental bleaching but may reduce enamel mineral content and induce structural changes. This study developed a bleaching‐hydrogel containing 6%HP and manganese‐oxide–doped Biosilicate (MnO_BioS), activated by violet LED, under in situ conditions.
Rafael Dascanio   +5 more
wiley   +1 more source

Identification and proposed control of helicopter transmission noise at the source [PDF]

open access: yes
Helicopter cabin interiors require noise treatment which is expensive and adds weight. The gears inside the main power transmission are major sources of cabin noise.
Coy, John J.   +6 more
core   +2 more sources

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