We use time-domain electrostatic force spectroscopy (TD-EFS) for characterising the dynamics of mobile ions in a partially crystallised LiAlSiO4 glass ceramic, and we compare the results of the TD-EFS measurements to macroscopic electrical conductivity measurements. While the macroscopic conductivity spectra are determined by a single dynamic process with an activation energy of 0.72 eV, the TD-EFS measurements provide information about two distinct relaxation processes with different activation energies. Our results indicate that the faster process is due to ionic movements in the glassy phase and at the glass-crystal interfaces, while the slower process is caused by ionic movements in the crystallites. The spatially varying electrical relaxation strengths of the fast and of the slow process provide information about the nano- and mesostructure of the glass ceramic.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/b418501c | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Shear bond strength and ARI scores of metal brackets to glazed glass ceramics and zirconia: an in vitro study investigating surface treatment protocols.
BMC Oral Health
December 2024
Faculty of Dentistry, Innovative Dental Materials and Interfaces Research Unit (URB2i), UR 4462, Paris Cité University, 1 rue Maurice Arnoux, Montrouge, 92120, France.
Objective: To evaluate the shear bond strength (SBS) and adhesive remnant index (ARI) scores of metal brackets to glazed lithium disilicate reinforced glass-ceramics and zirconia according to various surface treatment protocols.
Methods: A total of 240 lithium disilicate ceramic (LD) and 240 zirconia (Zr) blocks were randomly divided according to sandblasting, hydrofluoric acid (HF) etching, universal primer use, and the adhesive system applied. A maxillary canine metal bracket was bonded to each sample with resin cement (Transbond XT, TXT).
Microstructural and Surface Texture Evaluation of Orthodontic Microimplants Covered with Bioactive Layers Enriched with Silver Nanoparticles.
J Funct Biomater
December 2024
Department of Maxillofacial Orthopaedics and Orthodontics, Pomeranian Medical University in Szczecin, Al. Powst. Wlkp. 72, 70111 Szczecin, Poland.
Bacterial infections are a common cause of clinical complications associated with the use of orthodontic microimplants. Biofilm formation on their surfaces and subsequent infection of peri-implant tissues can result in either exfoliation or surgical removal of these medical devices. In order to improve the properties of microimplants, hybrid coatings enriched with silver nanoparticles, calcium, and phosphorus were investigated.
View Article and Find Full Text PDFEndocrown: A Minimally Invasive Alternative to Conventional Fixed Prosthesis.
Cureus
November 2024
Conservative Dentistry and Endodontics, Mahe Institute of Dental Sciences and Hospital, Mahe, IND.
Endodontically treated teeth with compromised coronal tooth structure often require core build-ups with the support of radicular posts. In certain cases, the traditional post and core approach may not be possible due to various anatomical and clinical contraindications. Such cases require more meticulous planning and alternative treatment approaches for successful outcomes.
View Article and Find Full Text PDFInvestigation of Antibiotic-Releasing Biodegradable Composite Bone Cements for Treating Experimental Chronic Maxillofacial Bone Infection.
J Biomed Mater Res A
January 2025
Department of Periodontics, Dr. R. Ahmed Dental College and Hospital, Kolkata, West Bengal, India.
Chronic osteomyelitis of the maxillofacial bones (i.e., jaw bones) is a persistent infection that requires effective treatment.
View Article and Find Full Text PDF[Analysis of the effect and influencing factors of glass fiber post and zirconia all ceramic crown in repairing tooth defects].
Shanghai Kou Qiang Yi Xue
October 2024
Department of Stomatology, Shandong Provincial Chronic Disease Hospital (Shandong Rehabilitation Center). Qingdao 266000, China. E-mail:
Purpose: To analyze the repair effect of glass fiber post combined with zirconia all ceramic crown in tooth defects and explore the relevant factors affecting the therapeutic effect.
Methods: A total of 100 patients(142 teeth) with dental defects admitted to Shandong Provincial Chronic Disease Hospital from January 2018 to January 2021 were selected as the study subjects. They were divided into an experimental group (glass fiber post combined with zirconia all ceramic crown restoration) with 70 patients(98 teeth) and the control group (metal post combined with zirconium dioxide all ceramic crown) with 30 patients (44 teeth).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!