Abstract Background and Objective In recent years, various laser systems have been introduced into the field of laser‐assisted endodontic therapy. The aim this study was to evaluate bactericidal effect Nd:YAG, Er:YAG, Er,Cr:YSGG radiation, antimicrobial photodynamic therapy (aPDT) in experimentally infected root canals compared with standard treatment 5.25% sodium hypochlorite (NaClO) irrigation. Materials Methods Two hundred twenty from extracted human teeth (contaminated Enterococcus...

Several previous studies have shown that oral microbial disorders may be closely related to the occurrence and development of type 2 diabetes mellitus (T2DM). However, whether function microorganisms their metabolites changed in patients with T2DM who not suffered from any diseases has been reported. We performed metagenomic analyses nontargeted metabolic analysis saliva supragingival plaque samples normal controls. found periodontal pathogens such as Porphyromonas gingivalis Prevotella...

Abstract Aim Previous studies have shown the important relationships between Enterococcus faecalis and Candida albicans in post‐treatment endodontic disease (PTED). However, fungal–bacterial interactions their possible functional routes are less understood. In this study, we investigated effect of extracellular vesicles (EVs) derived from C. on E. growth pathogenicity. Methodology EVs were isolated a yeast nitrogen base (YNB) medium, morphology, size distribution, protein concentration...

Objective: The purpose of this study was to evaluate the effect laser-activated irrigations (LAI) by using Erbium: Yttrium Aluminum Garnet (Er:YAG) laser and Erbium Chromium: Scandium Gallium (Er,Cr:YSGG) on removing smear layer (SL) from root canal wall. Background data: LAI has been proposed as an adjuvant conventional protocols endodontic treatment enhance disinfection, which is a promising protocol for SL removal. Materials methods: generated preparing canals extracted human teeth...

This study was to evaluate the bactericidal effect of Er:YAG laser-activated sodium hypochlorite irrigation (Er:YAG + NaOCl) on biofilms Enterococcus faecalis clinical isolate.It reported that NaOCl had effective laboratory-adapted E. strain, while no has its isolate.Eighteen strains were isolated from 39 root-filled teeth with periapical lesions, and their biofilm formation abilities evaluated using crystal violet staining method. Extracted human root canals prepared a 40#/.04 K3 instrument...

Objective: The aim of this study was to compare the bactericidal effect various laser irradiation systems on Enterococcus faecalis biofilms in dentinal tubules by using a novel dentin infection model and confocal scanning microscopy (CLSM). Background data: Laser-activated irrigations have been proposed as an adjuvant conventional protocols root canal treatment enhance smear layer removal, which is promising protocol for disinfection. Materials methods:E. were centrifuged into tubules,...

TGF-β1 (Transforming growth factor-β1) plays an important role in the regeneration and repair of pulp-dentin complex. However, biological function on odontoblastic differentiation remains unclear, mainly due to processes were controlled by complex signaling pathways. This study aimed investigate pathways involved regulating early dental pulp stem cells (DPSCs) their functional role. DPSCs treated with 1 ng/mL Western blotting was conducted examine activation protein kinase B (AKT), small...

This study evaluated the bactericidal effect of Er:YAG laser radiation combined with sodium hypochlorite (NaOCl) irrigation in treatment Enterococcus faecalis deep inside dentinal tubules. The was activated, respectively, at 0.3, 0.5 and 1.0 W for either 20 or 30 s; 52.5 g l− 1 NaOCl normal saline were used control groups. Root canals before after treatments examined using scanning electron microscopy (SEM). Bacterial reductions both on root canal walls 100, 200, 300, 400 500 μm tubules...

Objective: This study was to evaluate the potential of Erbium:Yttrium Aluminum Garnet laser-activated sodium hypochlorite irrigation (Er:YAG + NaOCl) for minimally invasive endodontics (MIE). Background data: Er:YAG laser irradiation can dramatically enhance penetration NaOCl, which may be a promising protocol MIE. Methods: Extracted human teeth were contaminated with Enterococcus faecalis 4 weeks. The infected canals then shaped different apical terminal working widths (ATWW, 15#/0.04,...

This study aimed to predict the fracture resistance of a mandibular first molar (MFM) with diverse endodontic cavities using finite element analysis (FEA).Five experimental models representing natural tooth (NT) and 4 endodontically treated MFMs were generated. Treated MFM traditional cavity (TEC) minimally invasive (MIE) cavities, including guided (GEC), contracted (CEC) truss (TREC). Three loads applied, simulating maximum bite force 600 N (N) vertically normal masticatory 225 laterally....

The odontoblastic differentiation of dental pulp stem cells (DPSCs) contributes to pulp-dentin regeneration. Enamel matrix derivative (EMD) is considered be a critical epithelial signal induce cell during odontogenesis and has been widely applied clinical periodontal tissue purpose this study was explore the effect EMD on DPSCs proliferation differentiation, as well underlying mechanisms. We conducted in vitro vivo researches get comprehensive understanding EMD. In phase: assessed by...

Development of quaternized mono-dispersed bioactive and biocompatible nanospheres as potential substrates for long-term antibacterial endodontic sealers.

Person search (PS) aims to jointly localize and identify a query person from natural, uncropped images. Existing works unintentionally adopt pedestrians (with similar poses unchanging clothing) as the restrict application scenarios in surveillance. This is due that most PS datasets are collected surveillance cameras with limited diversity of views, scenes, appearances, etc. In this paper, we study more general realistic task wild, where aim target persons much higher degree diversity. To...

AimThe current study evaluated the antibacterial activity of a newly developed quaternary ammonium polymethacrylate (QAPM)-containing bioactive glasses (BGs) via two-step method by our group, namely BGs-HAEMB, and explored its cytotoxicity biocompatibility.Methodology: The effects BGs-HAEMB against planktonic bacteria, bacterial biofilm formation, experimental root canal biofilms persistent pathogens (Enterococcus faecalis, Streptococcus sanguis Porphyromonas endodontalis) associated with...

This paper introduces an intelligent computational approach for extracting salient objects from images and estimating their distance information with PTZ (Pan-Tilt-Zoom) cameras. cameras have found wide applications in numerous public places, serving various purposes such as security management, natural disaster monitoring, crisis alarms, particularly the rapid development of Artificial Intelligence global infrastructural projects. In this paper, we combine Gauss optical principles camera's...

A new concept of quantum secret sharing is introduced, in which collaboration among participants are encourage. And the dealer can ask to send back their share and revoke before a predefined date or event, i.e. so-called seal property. We also give two concrete constructions CE-QSS-Seal (Collaboration-Encouraging Quantum Secret Sharing with Seal property) scheme. The first one unconditional secure achieve optimal bound second improve by introducing post-quantum computational assumption.

Objective: To study the effect of various laser-activated irrigation protocols on endodontic sealer penetration into dentinal tubules. Background data: Laser-activated is helpful for smear layer removal and thus might increase Methods: Forty-eight mandibular premolars with straight canals were instrumented divided four groups: C-I group, conventional needle sodium hypochlorite (NaOCl) followed by ethylenediaminetetraacetic acid (EDTA); Er:YAG-I, Er,Cr:YSGG-I, Nd:YAP-I groups, NaOCl EDTA...

Fused teeth usually involve several complications, such as the development of caries in groove between fused crowns, tooth impaction, diastemas, aesthetic and periodontal problems, pulpal pathosis, due to complex anatomical structure teeth. A thorough diagnosis is paramount forming an accurate treatment plan obtaining a favourable prognosis. With advent cone-beam computed tomography (CBCT), 3-dimensional images their surrounding dentoalveolar structures can now be readily obtained,...

In this work, the effects of ammonia addition on morphology evolution, nanostructure and oxidation reactivity soot particles in ethylene laminar diffusion flame were investigated. Soot sampling was performed using a thermophoresis probe morphological evolution observed by transmission electron microscopy. addition, high resolution microscopy, Raman spectroscopy thermogravimetric analysis adopted to study sampled quartz plate samples. The experimental results show that increases height...