Results 11 to 20 of about 1,797,053 (297)

Ethical aspects concerning endodontic Ethical aspects concerning endodontic instrument fracture instrument fracture

open access: yesBrazilian Journal of Oral Sciences, 2016
Aim: The aim of this study was to address several ethical aspects concerning the behavior of endodontists and general dentists regarding endodontic instrument fracture during root canal treatment.
Rhonan Ferreira da Silva   +5 more
doaj   +3 more sources

The Biomechanics of Nickel Titanium Instrument Fracture in Root Canal Therapy: A Narrative Review. [PDF]

open access: yesMaterials (Basel)
The use of motorized nickel titanium instruments is an essential component in contemporaneous clinical endodontics. The mechanical properties of nickel titanium are optimal for the cleaning and shaping of root canal systems.
Ohri K, Chien PY, Peters OA.
europepmc   +2 more sources

Fracture toughness characterization of thin Ti/SiC composites [PDF]

open access: yes, 2011
Titanium based alloys reinforced uniaxially with silicon carbide fibres (Ti/SiC) are advanced and innovative materials for aerospace vehicles.
Ma, Wei
core   +6 more sources

Service availability and readiness for hip fracture care in low- and middle-income countries in South and Southeast Asia [PDF]

open access: yes, 2023
Aims: The aim of this study was to describe the current pathways of care for patients with a fracture of the hip in five low- and middle-income countries (LMIC) in South Asia (Nepal and Sri Lanka) and Southeast Asia (Malaysia, Thailand, and the ...
Joon-Kiong Lee   +18 more
core   +1 more source

Dynamic cyclic fatigue resistance of NiTi instruments in a double-curved stainless steel canal with variable distances of displacement

open access: yesFrontiers in Materials, 2023
The present study aimed to measure the number of cycles to fracture (NCF) of different instruments using pecking motion at constant and varying distances of movement at body temperature. This study included 20 files from each brand: ProTaper Universal F2,
Van-Khoa Pham
doaj   +1 more source

Causes of scatter in high rate fracture testing of polymers [PDF]

open access: yes, 2013
A method based on the measurement of failure time is being developed by the European Structural Integrity Society to determine high rate fracture toughness of polymers.
Horsfall I.   +3 more
core   +1 more source

A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]

open access: yes, 2014
This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W, Wu, Z, Zhou, X
core   +1 more source

Defects and Safety of NiTi Root Canal Instruments: A Systematic Review and Meta-Analysis

open access: yesFrontiers in Dental Medicine, 2021
Aim: To review the reported defect and fracture rates of various NiTi instrumentation systems and identify factors that may influence the chance of NiTi file separation clinically.Data Sources: PubMed, EMBASE, and SCOPUS with controlled vocabulary and ...
Madeline Jun-yu Yon   +3 more
doaj   +1 more source

Risk factors for falls with severe fracture in elderly people living in a middle-income country: a case control study. [PDF]

open access: yes, 2008
BACKGROUND: Fracture after falling has been identified as an important problem in public health. Most studies of risk factors for fractures due to falls have been carried out in developed countries, although the size of the elderly population is ...
Coutinho, Evandro SF   +11 more
core   +2 more sources

The Open-Fracture Patient Evaluation Nationwide (OPEN) study : epidemiology of open fracture care in the UK. [PDF]

open access: yes, 2022
AIMS: Understanding of open fracture management is skewed due to reliance on small-number lower limb, specialist unit reports and large, unfocused registry data collections. To address this, we carried out the Open Fracture Patient Evaluation Nationwide (
Trompeter, A   +24 more
core   +1 more source

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