Results 51 to 60 of about 802,468 (284)

Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques

Dental Research Journal, 2021
Background: This study compared microleakage of Class II cavities restored using bonded-base and bulk-fill techniques with different bases.Materials and Methods: In this in vitro study, in 60 extracted human molars, standardized (4 mm × 2 mm × 8 mm ...
Atiyeh Feiz, Marzieh Sajedi, Niloufar Jafari, Edward J. Swift   +3 more
doaj   +1 more source

From Fiber Bundles to Architected Membranes: Triply Periodic Minimal Surface Architectures for Biohybrid Artificial Lungs

Advanced Materials, EarlyView.
Additively manufactured triply periodic minimal surface (TPMS) membranes offer an architecture‐driven alternative to hollow fiber bundles in artificial lungs. Multiphysics simulations and endothelialized prototypes show that the 3D‐printable membrane architecture improves gas exchange, blood flow distribution, and hemocompatibility, enabling ...
Michael Pflaum, Kai P. Barbian, Florian Neuhaus, Gerrit Sitarz, Carolin Nölke, Sebastian V. Jansen, John Linkhorst, Lukas T. Hirschwald, Sebastian Brosch, Christian Certa, Ulrich Steinseifer, Matthias Wessling, Jutta Arens, Arjang Ruhparwar, Bettina Wiegmann   +14 more
wiley   +1 more source

Microleakage of Amalgam Restorations after Exposure to Electromagnetic Fields of a Commercial Hair Dryer: An Ex-Vivo Study [PDF]

Journal of Biomedical Physics and Engineering
Background: Dental amalgam is a popular restorative material used in posterior teeth. Hair dryers can emit electromagnetic fields (EMFs) that may affect the microleakage of the amalgam-tooth interface.Objective: The aim of this experimental study was to ...
Maryam Paknahad, Ali Dehghani, Iman Khaleghi, Mahsa Eghildespour, Ghazal Mortazavi, Seyed Mahammad Javad Mortazavi   +5 more
doaj   +1 more source

Ultrathin Hydrogel Membranes Inspired by Soap Films Enable Physiologically Relevant Breathing Lung Models

Advanced Materials, EarlyView.
A soap‐film inspired strategy enables the fabrication of ultrathin yet robust GelMA‐PAAm membranes for breathing lung culture. The hydrogel membrane supports long‐term cyclic deformation under air‐liquid interface conditions, enabling physiologically relevant breathing motions of engineered lung tissue culture. ABSTRACT Breathing continuously stretches
Yunji Lee, Gwang Myeong Kim, Wookyeom Kim, Fenny Soetanto, Gyungin Ryu, Taehun Chung, Youn Soo Kim, Junmin Lee, Hwa‐Rim Lee, Sungjune Jung   +9 more
wiley   +1 more source

Bacterial microleakage in endodontically treated teeth following two methods of postspace preparation at two-time intervals: An in vitro study

The Journal of Indian Prosthodontic Society, 2022
Aims: The goal of this study was to analyze the bacterial microleakage following two methods (heat vs. rotary) of postspace preparation after two-time intervals (immediate vs. 1 week later). Setting and Design: In vitro-comparative study.
Azam S Mostafavi, Mahsa Rasoulzadehsheikh, Naghmeh Meraji, Maryam Pourhajibagher   +3 more
doaj   +1 more source

[Marginal leakage in dental restorations].

Avances en odontoestomatologia, 1990
We make a review of the factors contributing to microleakage around dental restorations and the biological effects that this produces. We also make an evaluation of the existing methods for its research. We analize the behaviour of the different restorative materials, in relation to microleakage, and we set the rules to minimize this inevitable event ...
J, Garro Barrio, J, Linaza Peña, R, Triana Triana, P, Barrio Fernández   +3 more
openaire   +1 more source

3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice

Advanced Materials Technologies, EarlyView.
We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona, Andrea Slézia, András Dávid, Ábel Petik, Dániel Hillier, István Ulbert, Attila Kaszás   +6 more
wiley   +1 more source

Oral Health-Related Complications of Breast Cancer Treatment: Assessing Dental Hygienists’ Knowledge and Professional Practice

, 2014
Purpose: Approximately 200,000 women are diagnosed with breast cancer in the U.S. every year. These patients commonly suffer from oral complications of their cancer therapy.
Inglehart, Marita Rohr, Taichman, L. Susan, Gomez, Grace   +2 more
core   +1 more source

Palatable‐Food–Driven Top‐Down Circuit Inhibits PVNCRF Activity to Mitigate Stress Via Peri‐PVNCRFR1 Neurons

Advanced Science, EarlyView.
Palatable food alleviates stress and prevents anxiety. This study uncovers a dedicated neural pathway: dopamine release in the PFC activates D1R neurons, whose projections to the peri‐PVN engage a population of anxiolytic CRFR1 neurons. These neurons then inhibit stress‐induced hyperactivity of PVNCRF neurons, providing a circuit‐level explanation for ...
Yuchuan Hong, Shirui Jun, Tianjiao Deng, Gaojie Shao, Dan Liu, Yi Sun, Yan Chen, Qian Xiao, Jie Shao, Sheng Wang, Tianwen Huang, Fan Yang, Jie Tu   +12 more
wiley   +1 more source

A Comparative Investigation of the Microleakage of Biodentine and Mineral Trioxide Aggregate as Coronal Barrier in Nonvital Bleaching

Journal of Mazandaran University of Medical Sciences, 2020
Background and purpose: Internal bleaching is recommended to correct the discoloration of pulpless teeth. This study aimed to compare the microleakage of biodentine and mineral trioxide aggregate (MTA) used as an intracanal barrier in non-vital bleaching.
Marjan Bolbolian, Farnaz Ghorbani, Mostafa Ghandi, Maryam Ghashami, Baharan Ranjbar Omidi, Monirsadat Mirzadeh   +5 more
doaj