Results 111 to 120 of about 797,671 (382)

Systematic Comparison of Commercial Uranyl‐Alternative Stains for Negative‐ and Positive‐Staining Transmission Electron Microscopy of Organic Specimens

open access: yesAdvanced Healthcare Materials, EarlyView.
Negative‐ and positive‐staining TEM is essential for rapid nanometer‐resolution characterization of organic specimens ranging from nanoparticles to cells. Uranyl salts are widely used negative‐/positive‐stains but are radioactive and highly toxic to users and the environment.
Vera M. Kissling   +4 more
wiley   +1 more source

Biomechanical analysis of stress distribution and failure risk in mandibular incisors restored with resin-bonded fixed partial dentures using CAD/CAM materials and restoration designs

open access: yesFrontiers in Bioengineering and Biotechnology
BackgroundComputer-aided design/manufacturing (CAD/CAM) materials are widely used in resin-bonded fixed partial dentures (RBFPDs), but their suitability across different designs has not been fully assessed. This study compares the stress distribution and
Hailiang Wang   +4 more
doaj   +1 more source

An investigation of occupational stress in New Zealand dentists : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts in Psychology at Massey University [PDF]

open access: yes, 1995
The present study sought to identify the occupational stressors as well as the resultant psychological and physical stress outcomes for New Zealand dentists.
Bate, Colin
core  

Dental care use by immigrant Canadians in Ontario: a cross-sectional analysis of the 2014 Canadian Community Health Survey (CCHS) [PDF]

open access: yes, 2019
Background: Ontario is home to the largest number of immigrants in Canada. However, very little is known about their dental care utilization patterns.
Costanian, Christy   +3 more
core   +1 more source

Pyrophosphate‐Containing Calcium Phosphates Negatively Impact Heterotopic Bone Quality

open access: yesAdvanced Healthcare Materials, EarlyView.
The role of calcium pyrophosphate (Ca‐PP) in heterotopic bone formation and material degradation is investigated using calcium phosphate (CaP) compositions with varying Ca‐PP content. Results show that Ca‐PP does not impede heterotopic bone formation, minimally affects CaP degradation at non‐osseous sites, and increases phagocytosis.
Martina Jolic   +7 more
wiley   +1 more source

The stress distribution of implants made of Polyaryletherketones: A 3D Finite Element Analysis

open access: yesActa Odontologica Turcica
OBJECTIVE: To explore the stress distribution on the bone-implant structures caused by the Polyetheretherketone (PEEK), Polyetherketoneketone (PEKK), and titanium fixture/abutments by using the three-dimensional (3D) finite element analysis (FEA ...
Muhammed Bekci   +2 more
doaj   +1 more source

Assessment of the changes in the stress-related salivary cortisol levels to the various dental procedures in children

open access: yesJournal of Indian Society of Pedodontics and Preventive Dentistry, 2015
Background: Fear and pain are the factors producing stress and there is evidence that dental fear acquired in childhood may persist to influence adult behavior. Dental treatment is often considered as anxiety producing and stressful.
Sharmila J Patil   +5 more
doaj   +1 more source

A mathematical model for the progression of dental caries [PDF]

open access: yesMathematical Medicine and Biology: A Journal of the IMA,31, 4, Published: 26 June 2013 (319-337)
A model for the progression of dental caries is derived. The analysis starts at the microscopic reaction and diffusion process. The local equations are averaged to derive a set of macroscopic equations. The global system includes features such as anisotropic diffusion and local changes in the geometry due to the enamel melting.
arxiv   +1 more source

Finite element analysis of Neanderthal and early Homo sapiens maxillary central incisor [PDF]

open access: yes
Neanderthal anterior teeth are very large and have a distinctive morphology characterized by robust 'shovelshaped' crowns. These features are frequently seen as adaptive responses in dissipating heavy mechanical loads resulting from masticatory and non ...
Benazzi, Stefano   +10 more
core   +1 more source

Functional Biomaterials Derived from Protein Liquid–Liquid Phase Separation and Liquid‐to‐Solid Transition

open access: yesAdvanced Materials, EarlyView.
Protein can undergo liquid–liquid phase separation and liquid‐to‐solid transition to form liquid condensates and solid aggregates. These phase transitions can be influenced by post‐translational modifications, mutations, and various environmental factors.
Tianchen Li   +3 more
wiley   +1 more source

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