Silanized aluminum borate whiskers (ABWs) of 4 wt%, silanized zirconium dioxide nanoparticles (nano-ZrO2) 2 wt% were mixed with polymethyl methacrylate (PMMA) powder to get ZrO2-ABWs/PMMA composites. Titanium (TiO2), silver-supported titanium (Ag/TiO2), phosphate (Novaron) and tetrapod-like zinc oxide (T-ZnOw) antibacterial agents 3 composites respectively fabricate standard specimens. Plaque biofilms on the specimens surface investigated for colony-forming units (CFUs). In addition,...

The aim of this study was to investigate the hybrid effects ZrO₂ nanoparticles (nano-ZrO₂) and aluminum borate whiskers (ABWs) on flexural strength surface hardness denture base resin, polymethyl methacrylate (PMMA). Both nano-ZrO₂ ABWs were modified by silane coupling agent (Z6030) before being mixed with PMMA. Various amounts silanized PMMA prepare ZrO₂-ABW/PMMA composites. Flexural evaluated using three- point bending test Vickers respectively. Fractured surfaces also observed scanning...

The aims of this in vivo investigation were to compare the marginal and internal fit single-unit crowns fabricated using a selective laser melting (SLM) procedure with two CAD/CAM grinding procedures, evaluate influence tooth type on parameters measured.A total 270 evaluated, including 90 SLM metal-ceramic (group B), zirconium-oxide-based ceramic L), lithium disilicate C). gaps recorded replica technique silicone indicator paste stabilized light-body silicone. gap specimen sectioned...

This study investigated the effects of luting cement type and thickness on stress distribution within all-ceramic crowns using finite element analysis.An crown restoration mandibular right first molar was prepared according to standard dental processes scanned micro-computed tomography. Eight 3D FE models were then developed that accounted for two adhesive systems, each with 60 μm, 90 120 150 μm. The subjected four loading conditions, stresses in veneer core layers evaluated.The maximum...

The aim of this study was to investigate the mechanical and thermal properties denture polymethyl methacrylate (PMMA) reinforced with aluminum borate whiskers (ABWs). To improve bonding between ABWs PMMA matrix, surface modified a silane coupling agent. Varied contents silanized —ranging 1 20 wt%— were mixed into resin matrix prepare ABW/PMMA composites, which subjected three-point bending test, Vickers hardness analysis. Silanized improved flexural strength, hardness, stability PMMA....

Deep venous thrombosis (DVT) is a kind of vascular obstruction, that commonly and widely occurs in lower limbs. Due to the lack obvious symptoms early stage, rate misdiagnosis missed diagnosis high. This study evaluated expression significance lncRNA ASB16-AS1 (ASB16-AS1) DVT aiming identify novel biomarker for its screening monitoring. There were 77 patients 62 healthy individuals included this study. Plasma level was using PCR compared between groups. The diagnostic prognostic values...

Conventional radiographic methods are widely used to evaluate the clinical accuracy of implant position. However, such require a second computerized tomography (CT) scan and manual registration between presurgical postsurgical CT data. The alignment errors cannot be calculated.The purpose this study was introduce completely digital method then compared with in evaluating accuracy. Some produced procedures were recorded.A total 32 implants from 19 patients sufficient bone volume enrolled...

Physical interaction between the microgel and hydrogel matrix is a key issue in rational design of reinforced hydrogels. A pentaerythritol‐crosslinked poly(acrylic acid) (PAAc) microgel, named Carbopol, composited with polyacrylamide (PAAm) hydrogel. The toughness significantly improved by constructing an interpenetrating network Carbopol PAAm. Chain entanglements within result strain‐hardening phenomenon efficient stress transfer from PAAm to sacrificing Carbopol. Hydrogen bonds PAAc can be...

The aim of this study was to compare the clinical outcomes four-implant-supported overdentures retained by stud or bar attachments for patients with an edentulous maxilla.From January 2008 December 2014, maxillary edentulism were enrolled in retrospective study. insertion four dental implants followed restoration either stud-retained bar-retained overdentures. characteristics subjects and recorded. Implant survival rates, marginal bone loss, peri-implant parameters, prosthetic maintenance...

Abstract Purpose This retrospective study investigates the accuracy of freehand implant placement and whether factors presence an adjacent tooth, quadrant, number missing teeth, location site influence direction angulation deviations. Materials Methods According to specific inclusion exclusion criteria, a total 112 implants from 75 partially edentulous patients were recruited for this study. The inserted using approach by one experienced clinician (right‐handed). full thickness flap was...

The preparation of CaSiO 3 –PMMA nanocomposite denture matrix was reported. We investigated the optimal amount nano-particles modified by silane coupling agent (Z-6030) on strengthen flexural strength and surface hardness (Knoop hardness) nano-CaSiO /PMMA composite materials. results indicated that 1.5% could enable to have maximum (90.50±4.86) MPa(increasing nearly 40% contrast blank group), while 2.0% made a Knoop hardness(24.59±0.98) MPa (augmenting with 24% compared group). Furthermore,...

To analyze the stress distribution of all-ceramic endocrown with different base materials and thicknesses using three-dimensional finite element analysis.A endodontically treated maxillary premolar was scanned by micro-CT, a model fluid resin as material divided into control (0 mm), 1 mm, 2 3 mm groups according to thickness. Three kinds conventional were used glass ion group (A), (B), nanocomposite (C), 1.0 thickness established. A static loading axial 45° direction applied each model, part...

The aim of this study was to evaluate the properties sustained release and antibacterial activity ornidazole-drug-loaded membranes using poly[(ethylene glycol)-caprolactone-lactide] (PCLA2575) as membrane material. Ornidazole-loaded were prepared by solvent casting method with proportion 5 wt%, 8 10 respectively. In vitro drug determined ultraviolet spectrophotometric method. activities against Streptococcus mutans Fusobacterium nucleatum in observed on solid culture medium. had high...

Objectives: Deep-venous thrombosis (DVT) refers to abnormal blood clotting in the deep vein cavity, and post-thrombotic syndrome (PTS) is most frequent complication. The study explored impact of microRNA 181b-5p on DVT progression based human umbilical endothelial cells (HUVECs).

This study was aimed at alleviating shortcomings in the treatment of periodontitis by preparation a biopolymer membrane loaded with minocycline hydrochloride (MH) inserted into periodontal pockets to treat infections. Monomethoxy-poly (ethylene glycol)-poly (ε-caprolactone-co-L-lactide) (mPEG-PCLA) is biocompatible and biodegradable amphiphilic block copolymer. It, therefore, has attracted considerable attention drug delivery systems treatment. We chose it as material for MH-drug loading....