keyword
https://read.qxmd.com/read/38537024/evaluation-the-stress-distribution-in-root-canals-by-3d-finite-element-analysis-after-the-materials-used-in-reattaching-the-vertically-root-fractured-fragments
#1
JOURNAL ARTICLE
Senem Yiğit Özer, Salih Danişman, Törem Özer
The aim was to evaluate the effect of stress distribution on vertical, horizontal, and oblique forces on the tooth model after reattaching the fragments of the maxillary incisor with vertical root fracture (VRF) using different materials, by 3D finite element analysis (FEA). Tooth with a root canal, spongious, and cortical bone models were designed. VRF was modeled on a tooth with 4 different re-attachment models: Group 1: dual-cure cement (DC)+fiber reinforced composite (FRC), Group 2: DC+polyethylene fiber, Group 3: DC+glass fiber, and Group 4:DC...
2024: Brazilian Dental Journal
https://read.qxmd.com/read/38537023/comparative-study-of-physical-chemical-properties-of-bioactive-glass-ionomer-cement
#2
JOURNAL ARTICLE
Nádia Buzignani Pires Ramos, Klissia Romero Felizardo, Sandrine Bittencourt Berger, Ricardo Danil Guiraldo, Murilo Baena Lopes
This study analyzed the physical-chemical properties of bioactive ionomer materials. Cention N bioactive materials were evaluated chemically activated (CN) and light-cured (CN-LC), Equia Forte Fill (EQUI); conventional resin composite Filtek Z350 XT (Z350); resin glass ionomer cement Riva light Cure (RIVA) and flowable resin composite Filtek Bulk Fill Flow (BULK-F) were evaluated. Sixty specimens (n=10) were prepared for sorption (SR), solubility (SL), flexural strength (FS), shrinkage stress (SS), conversion degree (CD), microhardness (MI), and surface roughness (SR) tests...
2024: Brazilian Dental Journal
https://read.qxmd.com/read/38537020/surface-treatments-of-the-zirconia-reinforced-lithium-disilicate-ceramic-in-the-adhesion-to-the-resin-cement
#3
JOURNAL ARTICLE
Mirko A R Aguilera, Américo C Bortolazzo, Lourenço Correr-Sobrinho, Rafael L X Consani
This study verified the effect of surface treatments of the zirconia-reinforced lithium disilicate ceramic bonded to resin cement. Ceramic blocks were divided according to treatments (n=10): FA+SRX (Fluoric acid + silane RX), FA+MDP (Fluoric acid + MDP), FA+SCF+MDP (Fluoric acid + silane CF + MDP), FA+MEP (Fluoric acid + MEP), and MEP (Self-etch primer). Resin cement cylinders were made in the ceramic blocks, photoactivated with 1,200 mW/cm² for 40s, stored in water at 37°C for 24h, and evaluated by the microshear strength test, optical failure descriptive analysis (%), surface characterization (SEM) and contact angle (Goniometer)...
2024: Brazilian Dental Journal
https://read.qxmd.com/read/38537017/preheated-acid-associated-with-silane-and-electric-current-in-the-adhesion-of-the-resin-cement-to-ceramic
#4
JOURNAL ARTICLE
Gustavo Belmiro Casaburi, Marcos Henrique Ramos da Silva, Lourenço Correr-Sobrinho, Rafael Leonardo Xediek Consani
This study verified the effect of the combination of preheated hydrofluoric acid/silane/electric current in the adhesion of the resin cement to ceramic. IPS E.max Press ceramic discs embedded in PVC rigid tubes were divided into four groups associating preheated hydrofluoric acid and silane applied with electrical current (n=10): Ha+S (Heated acid + silane); Ha+S+Ec (Heated acid + silane + electrical current); A+S (Acid + silane) and A+S+Ec (Acid + silano + electrical current). Resin cement/ceramic samples were stored in water at 37°C for 24h...
2024: Brazilian Dental Journal
https://read.qxmd.com/read/38537011/effect-of-zro2-paste-surface-treatments-and-storage-on-weibull-characteristics-and-resin-bond-strength-to-zirconia
#5
JOURNAL ARTICLE
Anne Heloyse Teixeira Crispim, Sarah Emille Gomes da Silva, Fernanda Gurgel de Gois Moreira, Bianca Cristina Dantas da Silva, Amanda Maria de Oliveira Dal Piva, Liliana Gressler May, Natália de Freitas Daudt, Rodrigo Othávio Assunção Souza
The objective is to evaluate the effect of different surface treatments and storage on the shear strength of ultratranslucent zirconia. 36 blocks of ultra-translucent zirconia were fabricated (7x7x2mm) and sintered. Then, divided into 12 groups according to the "surface treatment" (C -Primer; Al -Sandblasting with Al2O3 + Primer; Si -Silicate + Primer; Gl -Glaze + HF + Primer; Z -Zirlink; Zp -Zirlink + Primer) and "storage" factors (ST-with 150 days/37º and without). After surface treatment, five cylinders (Ø=2mm; h=2...
2024: Brazilian Dental Journal
https://read.qxmd.com/read/38536146/stresses-in-premolars-restored-using-different-post-and-core-and-crown-materials-an-fea-study
#6
JOURNAL ARTICLE
Tatjana Maravić, Claudia Mazzitelli, Allegra Comba, Uros Josic, Federico Del Bianc, Annamaria Forte, Darko Vasiljević, Larisa Blažić, Lorenzo Breschi, Annalisa Mazzoni
PURPOSE: The aim of the present study was to investigate the influence of three post-and-core systems and two crown materials on stresses in restored premolars using Finite Element Analysis (FEA). MATERIALS AND METHODS: A maxillary second premolar 3D model was created in SolidWorks 2014 (Dassault Systémés). Severe loss of tooth structure was simulated with six restorative options: 1) glass-fiber-reinforced composite post and composite core (GFRC)+CAD/CAM leucite-reinforced glass-ceramic crown (LRC); 2) carbon-fiberreinforced composite post and composite core (CFRC)+LRC; 3) metal cast post-and-core (MPC)+LRC 4) GFRC+CAD/CAM composite resin crown (CC); 5) CFRC+CC; 6) MPC+CC...
March 22, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38535672/effect-of-n-c-s-h-on-hydration-and-reinforcement-of-mineral-powder-cement-system-at-low-temperatures
#7
JOURNAL ARTICLE
Wei Li, Chunxiang Qian, Qingchao Li, Kehan Wang, Chunyang Zheng, Yanli Zhang
This paper investigated the effect of nano-calcium silicate hydrate (n-C-S-H) on the early compressive strength of mineral powder-cement systems under low-temperature curing conditions (5 °C). The hydration mechanism of n-C-S-H in the mineral powder-cement system at different dosages was analyzed by combining it with XRD, DSC-TG, MIP, and other techniques. The results show that n-C-S-H significantly enhances the early compressive strength of the mineral powder-cement system under low-temperature curing conditions, with optimal results observed at a dosage of 1...
March 15, 2024: Nanomaterials
https://read.qxmd.com/read/38535264/bonding-pretreatment-of-aesthetic-dental-cad-cam-materials-through-surface-etching-with-a-mixed-aqueous-solution-of-ammonium-fluoride-and-ammonium-hydrogen-sulfate
#8
JOURNAL ARTICLE
Yusaku Nishizawa, Tatsuo Kawamoto, Hiroshi Ikeda
Hydrofluoric acid (HF) is commonly used as an etchant for the pretreatment of dental computer-aided design/computer-aided manufacturing (CAD-CAM) materials, such as glass-ceramics and resin composites. Despite its effectiveness, the harmful and hazardous nature of HF has raised significant safety concerns. In contrast, ammonium fluoride (AF) is known for its relatively low toxicity but has limited etching capability. This study explored the potential of ammonium hydrogen sulfate (AHS), a low-toxicity and weak acid, to enhance the etching ability of aqueous AF solutions for the bonding pretreatment of CAD-CAM materials...
March 14, 2024: Journal of Functional Biomaterials
https://read.qxmd.com/read/38534867/effect-of-immediate-dentin-sealing-on-the-bonding-performance-of-indirect-restorations-a-systematic-review
#9
REVIEW
Fusun Ozer, Zeynep Batu Eken, Jessica Hao, Nuray Tuloglu, Markus B Blatz
The popular immediate dentin sealing (IDS) technique is used to improve the bond strength of indirect restorations. This systematic review assessed whether bond strength is affected by the type of aging conditions, bonding agents, flowable resin composites, impression materials, temporary materials, and/or resin cement used within the IDS procedure. A comprehensive database search of PubMed, Embase, Scopus, Ovid Medline, Web of Sciences, Cochrane Library, Dentistry & Oral Sciences Source, and ProQuest was carried out up to 30 January 2024 without publication year or language limitations...
March 17, 2024: Biomimetics
https://read.qxmd.com/read/38534792/inheritance-of-stress-responses-via-small-non-coding-rnas-in-invertebrates-and-mammals
#10
REVIEW
Maria C Ow, Sarah E Hall
While reports on the generational inheritance of a parental response to stress have been widely reported in animals, the molecular mechanisms behind this phenomenon have only recently emerged. The booming interest in epigenetic inheritance has been facilitated in part by the discovery that small non-coding RNAs are one of its principal conduits. Discovered 30 years ago in the Caenorhabditis elegans nematode, these small molecules have since cemented their critical roles in regulating virtually all aspects of eukaryotic development...
December 19, 2023: Epigenomes
https://read.qxmd.com/read/38534561/the-impact-of-defect-size-on-bone-healing-in-critical-size-bone-defects-investigated-on-a-rat-femur-defect-model-comparing-two-treatment-methods
#11
JOURNAL ARTICLE
Andreas Kammerer, Frederik Alexander Hartmann, Christoph Nau, Maximilian Leiblein, Alexander Schaible, Jonas Neijhoft, Dirk Henrich, René Verboket, Maren Janko
Critical-size bone defects up to 25 cm can be treated successfully using the induced membrane technique established by Masquelet. To shorten this procedure, human acellular dermis (HAD) has had success in replacing this membrane in rat models. The aim of this study was to compare bone healing for smaller and larger defects using an induced membrane and HAD in a rat model. Using our established femoral defect model in rats, the animals were placed into four groups and defects of 5 mm or 10 mm size were set, either filling them with autologous spongiosa and surrounding the defect with HAD or waiting for the induced membrane to form around a cement spacer and filling this cavity in a second operation with a cancellous bone graft...
March 19, 2024: Bioengineering
https://read.qxmd.com/read/38534487/influence-of-bioceramic-cements-on-the-quality-of-obturation-of-the-immature-tooth-an-in-vitro-microscopic-and-tomographic-study
#12
JOURNAL ARTICLE
Raya Al-Rayesse, Ossama Al-Jabban, Ammar Eid, Alaa Kabtoleh, Frédéric Addiego, Davide Mancino, Youssef Haikel, Naji Kharouf
The present in vitro study focuses on the filling ability of three different bioceramic cements with or without the addition of a bioceramic sealer in an open apex model on the marginal apical adaptation, tubule infiltrations, and void distributions as well as the interface between the cement and the sealer materials. To this end, sixty mandibular premolars were used. MTA-Biorep (BR), Biodentine (BD), and Well-Root Putty (WR) were used to obturate the open apex model with or without the addition of a bioceramic sealer, namely TotalFill® BC sealer™ (TF)...
February 23, 2024: Bioengineering
https://read.qxmd.com/read/38534301/comparing-zirconium-crown-marginal-adaptation-in-preparations-with-two-different-occlusal-reductions
#13
JOURNAL ARTICLE
Ali Khekan, Bernd Kordaß
This study aimed to assess and contrast the effects on the vertical marginal fit of full contour CAD/CAM-generated monolithic zirconia crowns at pre- and post-cementation levels with various occlusal reduction schemes (planar and flat) and cements. Forty sound human maxillary first premolars were sampled for this study. The samples were divided into two main groups with twenty samples in each group according to the occlusal reduction scheme as follows: Group A included a chamfer finishing line design with a planar occlusal reduction scheme and Group B included a chamfer finishing line design with a flat occlusal reduction scheme...
March 19, 2024: Dentistry Journal
https://read.qxmd.com/read/38534278/the-impact-of-nano-and-micro-silica-on-the-setting-time-and-microhardness-of-conventional-glass-ionomer-cements
#14
JOURNAL ARTICLE
Zeynep A Güçlü, Şaban Patat, Nichola J Coleman
The objective of this study was to investigate the effect of the incorporation of 2, 4 or 6 wt% of amorphous nano- or micro-silica (Aerosil® OX 50 or Aeroperl® 300 Pharma (Evonik Operations GmbH, Essen, Germany), respectively) on the net setting time and microhardness of Ketac™ Molar (3M ESPE, St. Paul, MN, USA) and Fuji IX GP® (GC Corporation, Tokyo, Japan) glass-ionomer cements (GICs) (viz. KM and FIX, respectively). Both silica particles were found to cause a non-linear, dose-dependent reduction in setting time that was within the clinically acceptable limits specified in the relevant international standard (ISO 9917-1:2007)...
February 27, 2024: Dentistry Journal
https://read.qxmd.com/read/38534097/single-crown-restorations-supported-by-6-mm-implants-in-the-resorbed-posterior-mandible-a-10-year-prospective-case-series
#15
JOURNAL ARTICLE
Felix L Guljé, Gerry M Raghoebar, Barzi Gareb, Arjan Vissink, Henny J A Meijer
PURPOSE: To assess marginal bone level changes, implant and restoration survival, condition of the peri-implant mucosa, and the patient's satisfaction with the single restoration supported by a 6-mm long implant in the posterior mandible after 10 years in function. MATERIALS AND METHODS: Twenty-one consecutive patients missing premolars or molars in the posterior mandible, with a bone volume consisting of a width of at least 6 mm and an estimated height of 8 mm between the top of the ridge and alveolar nerve, were included...
March 27, 2024: Clinical Implant Dentistry and related Research
https://read.qxmd.com/read/38533141/the-effect-of-tranexamic-acid-with-or-without-tourniquet-on-blood-loss-in-total-knee-arthroplasty-at-a-community-hospital
#16
JOURNAL ARTICLE
Elise N Ketelaar, Michael Wagner, Adam Lorenzo, Robert Comrie, Carolina Restini, Grace D Brannan, Roger Corvasce, Saad Mohammad
Tourniquets have long been used in total knee arthroplasty due to the theoretical improvement of bleeding control, integration of cement-bone interface, visibility, and efficiency of the overall surgery. However, this has become increasingly disputed. Comparative studies in total knee arthroplasty employing chemical prophylaxis, i.e., tranexamic acid, have been conducted. This retrospective cohort study evaluated the effect of tranexamic with or without a tourniquet on mean blood loss, hemoglobin, and length of stay in total knee arthroplasty patients...
February 2024: Curēus
https://read.qxmd.com/read/38532413/influence-of-screw-channel-angulation-on-reverse-torque-value-and-fracture-resistance-in-monolithic-zirconia-restorations-after-thermomechanical-cycling-an-in-vitro-study
#17
JOURNAL ARTICLE
Amir Alireza Khaledi, Shouka Shalileh, Maryam Hejazi, Rashin Giti
BACKGROUND: While the concept of angled screw channels has gained popularity, there remains a scarcity of research concerning the torque loss and fracture strength of monolithic zirconia restorations with various screw channel angulations when exposed to thermomechanical cycling. This in-vitro study aimed to evaluate the reverse torque value and fracture resistance of one-piece screw-retained hybrid monolithic zirconia restorations with angulated screw channels after thermomechanical cycling...
March 26, 2024: BMC Oral Health
https://read.qxmd.com/read/38532126/utilizing-an-antibiotic-eluting-articulated-cemented-spacer-in-the-two-stage-management-of-infected-total-hip-arthroplasty-a-technical-note
#18
JOURNAL ARTICLE
Aditya L Kekatpure, Aashay L Kekatpure, Jae Youn Yoon, Pil Whan Yoon, Jun-Ki Moon
Two-stage revision is generally preferred to eradicate chronic periprosthetic infections after total hip arthroplasty (THA) because of its good infection control and promising results. During two-stage revision, a temporary antibiotic-impregnated cement spacer was initially used for the local delivery of antibiotics, thereby reducing the risk of infection recurrence. Many researchers have reported various techniques for fabricating cemented spacers; however, there is no established standard technique. We share our cost-effective and easily reproducible technique for creating an articulated cemented spacer for managing infected THA...
March 26, 2024: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://read.qxmd.com/read/38531354/antibiotic-bone-cement-accelerates-diabetic-foot-wound-healing-elucidating-the-role-of-rock1-protein-expression
#19
JOURNAL ARTICLE
Chenglan Yang, Dali Wang
Clinical studies indicate antibiotic bone cement with propeller flaps improves diabetic foot wound repair and reduces amputation rates, but the molecular mechanisms, particularly key proteins' role remain largely unexplored. This study assessed the efficacy of antibiotic bone cement for treating diabetic foot wounds, focusing on molecular impact on ROCK1. Sixty patients were randomized into experimental (EXP, n = 40) and control (CON, n = 20) groups, treated with antibiotic bone cement and negative pressure...
April 2024: International Wound Journal
https://read.qxmd.com/read/38531127/cement-based-solidification-of-nuclear-waste-mechanisms-formulations-and-regulatory-considerations
#20
REVIEW
Salim Barbhuiya, Bibhuti Bhusan Das, Tanvir Qureshi, Dibyendu Adak
This review paper provides a comprehensive analysis of cement-based solidification and immobilisation of nuclear waste. It covers various aspects including mechanisms, formulations, testing and regulatory considerations. The paper begins by emphasizing the importance of nuclear waste management and the associated challenges. It explores the mechanisms and principles in cement-based solidification, with a particular focus on the interaction between cement and nuclear waste components. Different formulation considerations are discussed, encompassing factors such as cement types, the role of additives and modifiers...
March 25, 2024: Journal of Environmental Management
keyword
keyword
78021
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.