Results 31 to 40 of about 2,886,370 (294)

Fracture resistance of endodontically treated teeth after instrumentation with different nickel titanium systems

Endodontology, 2020
Aim: To compare the vertical root fractures (VRFs) resistance of teeth instrumented with ProTaper Universal, ProTaper Next, HyFlex CM and HERO Shaper nickel titanium (NiTi) rotary systems and obturated with compatible gutta-percha cones using the single ...
Sameer Ahmed Khan, Rajni Nagpal, Udai Pratap Singh, Nida Mehmood, Meenal Agarwal, Zaid Nabi Khan   +5 more
doaj   +1 more source

Evaluation of fracture resistance and mode of failure of premolars restored with nanohybrid composite, ORMOCER and ceramic inlays

Journal of Oral Biology and Craniofacial Research, 2018
Objectives: To evaluate the fracture resistance and mode of failure of maxillary premolars restorations restored with nanohybrid Composite, ORMOCER and Ceramic Inlays. Materials and method: 100 extracted first maxillary premolar were collected.
Mohit. K. Gunwal, Pratima R. Shenoi, Tanvee Paranjape, Sonal Dhote, Ravish Tongya, Magesh Kumar, Sanjay Rastogi   +6 more
doaj   +1 more source

Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study

International Journal of Dentistry, 2023
Objectives. The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars. Materials and Methods. A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups (n = 12
Sara Koosha, Mahdieh S. Jebelizadeh, Azam S. Mostafavi   +2 more
doaj   +1 more source

Comparison of Reverse Sandwich Restorations Versus Composite Fillings for the Restoration of External Cervical Resorptions: An In-Vitro Study

European Endodontic Journal, 2023
Objective: The aim was to compare the 'reverse sandwich restoration' to resin composite restorations re- garding marginal adaptation, fracture resistance, favourable/unfavourable fractures in the management of external cervical resorption. Methods: Forty-
Thilla Sekar Vinothkumar, Krisha Doshi, Nivedhitha Malli Sureshbabu, Jayalakshmi Somasundaram, Anandhi Sekar Arthisri, Frank C. Setzer, Venkateshbabu Nagendrababu   +6 more
doaj   +1 more source

Evaluation of the fracture resistance of root filled thin walled teeth restored with different post systems

Biomedical Journal, 2019
Background: Restoration of the teeth with extensive root canals with different post systems is a challenge for clinicians. Evaluation of these systems is important for clinical success.
Caner Öztürk, Serdar Polat, Makbule Tunçdemir, Fehmi Gönüldaş, Emre Şeker   +4 more
doaj   +1 more source

Towards the understanding of fracture resistance of an ultrahigh-strength martensitic press-hardened steel

Journal of Materials Research and Technology, 2023
Identifying the fracture resistance capabilities and gaining a deeper understanding of the controlling damage mechanisms are important to the development of press-hardened steels (PHS) for automotive applications.
Qingquan Lai, Zixuan Chen, Yuntao Wei, Qi Lu, Yi Ma, Jianfeng Wang, Guohua Fan   +6 more
doaj   +1 more source

DETERMINATION OF THE FRACTURE ENERGY AND THE FRACTURE RESISTANCE OF INTERFACES

Le Journal de Physique Colloques, 1985
The basic concept and the fracture mechanics methods for determination of the fracture energy and the fracture resistance of interfaces between semi-brittle materials are reviewed. The interfacial fracture energy is derived from the global energy balance concept for crack propagations in an interface, whereas the fracture resistance parameter is based ...
Suga, T., Elssner, G.
openaire   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Influence of proximal box depth associated with deep margin elevation and restorative materials on fracture resistance and repairability of endodontically treated teeth: an in vitro study

BMC Oral Health
Background To evaluate the effects of different restorative materials under proximal box depth conditions associated with proximal deep margin (PDM) on fracture resistance and fracture mode on fracture resistance and fracture mode of endodontically ...
Ecem Karakoyunlu, Merve Sari, Kübra Gürler, Gubina Mıdoglu, Koray Yilmaz   +4 more
doaj   +1 more source

Ethical Foreground and Background in Adult Educator Work

New Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Adult educators work in a complex ethical environment. The very act of contributing to the learning of another is fraught with moral overtones. In this paper we consider the ethical dimensions of adult educator practice by distinguishing the ethical features of the context or ‘background’ of practice from the ethical capabilities and decision ...
Steven Hodge, Sonal Nakar
wiley   +1 more source