Mechanics of ceramic-epoxy interpenetrating phase composites engineered with TPMS and spinodal topologies

Composites Science and Technology, Journal Year: 2024, Volume and Issue: 253, P. 110632 - 110632

Published: April 26, 2024

Language: Английский

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Does the Type of Resin Luting Material Affect the Bonding of CAD/CAM Materials to Dentin?

Dentistry Journal, Journal Year: 2025, Volume and Issue: 13(1), P. 41 - 41

Published: Jan. 19, 2025

Background/Objectives: This study aimed to investigate the microtensile bond strength (µTBS) of composite-based (Cerasmart), polymer-infiltrated (Vita Enamic), and feldspathic (Cerec) CAD/CAM blocks luted dentin using a dual-cure resin cement (LinkForce), as well micro-hybrid (G-aenial) flowable composites (G-aenial Universal Flo), evaluate microhardness (HV) luting materials through blocks. Methods: Cerasmart, Enamic, Cerec were three materials; LinkForce, G-aenial, Flo (n = 5). For HV, 117 disk-shaped specimens from 13) polymerized 3 mm thick CAD/CAM. Thirty-nine light-cured without used control. Following 24 h storage, µTBS HV evaluated. Data analyzed two-way ANOVA post hoc Tukey tests (p < 0.05). Results: The significantly influenced by type material material. With all materials, LinkForce exhibited similar that > Compared with control group, values decreased Conclusions: Heavily filled exhibit bonding effectiveness cements. All showed when

Language: Английский

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Smart dental materials for antimicrobial applications

Bioactive Materials, Journal Year: 2022, Volume and Issue: 24, P. 1 - 19

Published: Dec. 9, 2022

Smart biomaterials can sense and react to physiological or external environmental stimuli (e.g., mechanical, chemical, electrical, magnetic signals). The last decades have seen exponential growth in the use development of smart dental for antimicrobial applications dentistry. These biomaterial systems offer improved efficacy controllable bio-functionalities prevent infections extend longevity devices. This review article presents current state-of-the-art design, evaluation, advantages, limitations bioactive stimuli-responsive autonomous materials applications. First, importance classification are discussed. Second, categories bioresponsive antibacterial systematically itemized based on different stimuli, including pH, enzymes, light, field, vibrations. For each category, their mechanism, applications, examples Finally, we examined obstacles required develop clinically relevant these appealing technologies.

Language: Английский

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Urchin-like multiscale structured fluorinated hydroxyapatite as versatile filler for caries restoration dental resin composites

Bioactive Materials, Journal Year: 2024, Volume and Issue: 35, P. 477 - 494

Published: Feb. 19, 2024

Caries is one of the most prevalent human diseases, resulting from demineralization tooth hard tissue caused by acids produced bacteria, and can progress to pulpal inflammation. Filling restoration with dental resin composites (DRCs) currently common treatment for caries. However, existing DRCs suffer low fracture strength lack comprehensive anti-caries bioactivity including remineralization, pulp protection, anti-cariogenic bacteria effects. In this study, inspired plant roots' ability stabilize improve soil, fluorinated urchin-like hydroxyapatite (FUHA) a three-dimensional whisker structure bioactive components calcium, phosphorus, fluorine was designed synthesized dynamic self-assembly method. Furthermore, versatile FUHA particles different loading fractions were used as functional fillers fabricate methacrylate-based DRCs, where (UHA) filled commercial (Z350XT BEAUTIFIL II) served control groups. The results demonstrated that 50 wt% in matrix endowed DRC (F5) excellent physicochemical properties, dentin remineralization property, cell viability, promotion stem cells mineralization, antibacterial properties. Meanwhile, F5 also presented good clinical handling aesthetic characteristics. Therefore, structure/functional-integrated have potential promising strategy bioactivity.

Language: Английский

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Shear properties and failure mechanisms of adhesive bonded composite joint: Effect of glass particle reinforcement

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(11), P. 9977 - 9994

Published: April 22, 2024

Abstract High‐performance composite structures and effective joining processes are important for shipbuilding, aerospace sectors to perform better in challenging situations. The importance of this study is analyze the effect glass powder‐modified adhesive techniques such as co‐curing (CC), co‐bonding (CB), secondary bonding (SB) on flexural, shear, free vibrational characteristics natural frequency damping factor fiber‐reinforced polymer (GFRP) composites. Results revealed that, compared SB CB joints, 1 wt.% CC single lap joints (SLJ) enhanced shear properties by 103.04% 111.74%, respectively, due rougher surface formation layer. As a result, it fiber's adhesion matrix. On other hand, bonded with powder exhibited highest flexural strength (85.99 Mpa). experimental analysis showed that had high frequency, whereas higher increased matrix fiber interaction. current research reveals technique provided significant improvement adhesively composite's mechanical characteristics. Highlights Four distinct were used prepare sonication. SLJ fabricated through CC, CB, Maximum found at powder. behavior. Failure was conducted using FE‐SEM images.

Language: Английский

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Cariogenic Microbiota and Emerging Antibacterial Materials to Combat Dental Caries: A Literature Review

Pathogens, Journal Year: 2025, Volume and Issue: 14(2), P. 111 - 111

Published: Jan. 23, 2025

Dental caries is the most common oral disease in world and a chronic infectious disease. The cariogenic microbiome plays an important role process of caries. ecological imbalance microbiota leads to low pH, which causes Therefore, antibacterial materials have always been hot topic. Traditional such as cationic agents, metal ion some natural extract agents good effects. However, they can cause bacterial resistance poor biological safety when used for long-term purposes. Intelligent materials, pH-responsive nanozymes, photoresponsive piezoelectric living are emerging nano-strategies that respond microenvironment or other specific stimuli exert Compared with traditional these less prone resistanceand safety. This review summarizes characteristics materials. These accurately act on microenvironment, showing intelligent effects providing new ideas management.

Language: Английский

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Mechanical properties of modern restorative “bioactive” dental materials - an in vitro study

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 28, 2025

This study aimed at assessing the mechanical properties and degradation of commercial bioactive materials. The materials (Activa Bioactive Restorative, Beautifil Flow Plus F00, F03, Predicta Bulk Bioactive) composite resin Filtek Supreme were submitted to flexural diametral tensile strength tests (FS, DTS), modulus elasticity (ME) evaluation, analysis aging in 70% ethanol saliva on their hardness sorption. results for DTS ranged from 33.16 MPa (Beautifil F03) 47.74 (Filtek Flow). highest FS was 120.40 (Predicta Bioactive), while lowest values 86.55 Restorative). Activa Restorative showed ME, as well water sorption both alcohol artificial saliva. Moreover, induced a significant decrease (p < .01). Alcohol storage caused all .0001). All tested met basic requirements light-curing terms FS. However, higher than saliva, decreased significantly after 30 days. presented parameters, initial hardness,

Language: Английский

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Towards the Standardization of Artificial Aging Protocols for Dental Composites: Evaluation of Proposed Methods

Journal of Functional Biomaterials, Journal Year: 2025, Volume and Issue: 16(2), P. 49 - 49

Published: Feb. 4, 2025

In restorative dentistry, there are no standardized in vitro accelerated aging methods to evaluate the long-term stability of dental composites. Current research aimed at extending clinical success restorations emphasizes need for post-aging evaluation. This study represents final stage assessing three selected protocols that utilize a 0.1 M sodium hydroxide solution as primary agent accelerate degradation processes. Twelve resin-based composites, categorized into five types, were evaluated flexural strength (FS), diametral tensile (DTS), hardness (HV), and fracture toughness (FT) both before after aging. The proposed significantly degraded mechanical properties most materials, highlighting effectiveness NaOH medium hydrolytic testing. Materials with high filler content (approximately 80 wt.%) notably prone degradation, underscoring importance optimizing coupling agent. findings suggest incorporating thermocycling may enhance development evaluation innovative work contributes establishing foundation protocols, supporting accurate assessment composites vitro.

Language: Английский

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Microstructural investigation of hybrid CAD/CAM restorative dental materials by micro-CT and SEM

Dental Materials, Journal Year: 2024, Volume and Issue: 40(6), P. 930 - 940

Published: May 9, 2024

An increasing number of CAD/CAM (computer-aided design/computer-aided manufacturing) hybrid materials have been introduced to the dental market in recent years. In addition, for additive manufacturing (AM) are becoming more attractive digital dentistry. Studies on material microstructures using micro-computed tomography (µ-CT) combined with scanning electron microscopy (SEM) only available a limited extent so far. One three-dimensional- (3D-) printable (VarseoSmile Crown plus) and two millable (Vita Enamic; Voco Grandio), as well one direct composite (Ceram.x duo), were included present study. Cylindrical samples diameter 2 mm produced from each investigated by means synchrotron radiation µ-CT at voxel size 0.65 µm. Different same materials, obtained cutting polishing, SEM. The 3D-printed showed some agglomerations irregular distribution fillers, visible layered macrostructure few spherical pores due printing process. revealed homogenous ceramic particles. multiple air bubbles microstructural irregularities based manual processing. SEM analysis different even though they belong class materials. It could be shown that imaging valuable tools understand microstructure related mechanical properties

Language: Английский

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Antibacterial Agents Used in Modifications of Dental Resin Composites: A Systematic Review

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(9), P. 3710 - 3710

Published: April 26, 2024

Introduction: Resin-based composites (RBCs) are very common and often applicable in dentistry. Their disadvantage is susceptibility to secondary caries due the formation of bacterial biofilm at interface with patient’s tissues. Antimicrobial additive incorporation into RBCs seems be a justified method alleviate above-mentioned negative phenomenon. The aim this review provide juxtaposition strategies results on topic antimicrobial composites. It also provides insights future research prospects for clinical applications. Methods: This summarizes literature from 2017 2024, describing potential agents incorporated dental methodology involved systematic search using Population/Intervention/Comparison/Outcome (PICO) structure selecting articles databases such as Pubmed, ScienceDirect, Elsevier, which allowed an in-depth substances utilized antibacterial modification RBCs. Results: A total 159 were identified, 43 met inclusion criteria. Conclusions: summary novel approaches field materials science. show variety modifying efficacy. worth underlining that there significant difficulty comparing studies selected review. related different modifiers used compositions. Unfortunately, still lack standardized approach give them biocidal character simultaneously maintain stability their mechanical chemical properties.

Language: Английский

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