6,296 results match your criteria tukey test


Photobiomodulation of oral fibroblasts stimulated with periodontal pathogens.

Lasers Med Sci 2021 May 15. Epub 2021 May 15.

School of Dentistry, University of Birmingham, Birmingham, UK.

Photobiomodulation (PBM) utilises light energy to treat oral disease, periodontitis. However, there remains inconsistency in the reporting of treatment parameters and a lack of knowledge as to how PBM elicits its molecular effects in vitro. Therefore, this study aimed to establish the potential immunomodulatory effects of blue and near infra-red light irradiation on gingival fibroblasts (GFs), a key cell involved in the pathogenesis of periodontitis. Read More

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The effect of different micro-osteoperforation depths on the rate of orthodontic tooth movement: A single-center, single-blind, randomized clinical trial.

Korean J Orthod 2021 May;51(3):157-165

Department of Orthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Atakum, Samsun, Turkey.

Objective: This study aimed to identify the clinical effectiveness of two different penetration depths of micro-osteoperforations (MOPs) on the rate of orthodontic tooth movement.

Methods: Twenty-four patients requiring the removal of the upper first premolar teeth were selected and randomly divided into two groups. The control group participants did not undergo MOPs. Read More

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Effect of high-fluoride dentifrice and bracket bonding composite material on enamel demineralization adjacent to orthodontic brackets .

J Clin Exp Dent 2021 May 1;13(5):e493-e498. Epub 2021 May 1.

Restorative Dentistry Department, Federal University of Piauí, Teresina, Brazil.

Background: There is a lack of information about the association of high-fluoride dentrifrice and fluoride-containing bonding material to prevent enamel white spot lesions development adjacent to brackets. The aim of this in vitro study was to evaluate the effect of high-fluoride dentifrice and fluoride-containing bonding material on enamel demineralization adjacent to orthodontic brackets.

Material And Methods: Forty-eight enamel specimens with 7x7x2 mm were obtained from bovine incisors. Read More

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Comparative Evaluation of Effectiveness of Tell-Play-Do, Film Modeling and Use of Smartphone Dental Application in the Management of Child Behavior.

Int J Clin Pediatr Dent 2020 Nov-Dec;13(6):682-687

Department of Pedodontics and Preventive Dentistry, Bharati Vidyapeeth Dental College, Sangli, Maharashtra, India.

Aim: To evaluate the effectiveness of three different behavioral modification techniques: tell-play-do (TPD), film modeling, and use of smartphone dental app in the management of child behavior.

Settings And Design: Seventy-five children aged between 6 years and 9 years who were on their first dental visit were randomly divided into three groups. The study was conducted into two visits. Read More

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Maternal ingestion of cocoa causes constriction of fetal ductus arteriosus in rats.

Sci Rep 2021 May 11;11(1):9929. Epub 2021 May 11.

Fetal Cardiology Unit, Institute of Cardiology/FUC, Avenida Princesa Isabel, 370, Porto Alegre, CEP 90620-000, Brazil.

Maternal consumption of polyphenol-rich foods has been associated with fetal ductus arteriosus constriction (DAC), but safety of chocolate exposure in fetal life has not been studied. This experimental study tested the hypothesis that maternal cocoa consumption in late pregnancy causes fetal DAC, with possible associated antioxidant effects. Pregnant Wistar rats, at the 21st gestational day, received by orogastric tube cocoa (720 mg/Kg) for 12 h, indomethacin (10 mg/Kg), for 8 h, or only water, before cesaren section. Read More

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Application of an auto-edge counting method for quantification of metal artifacts in CBCT images: a multivariate analysis of object position, field of view size, tube voltage, and metal artifact reduction algorithm.

Oral Surg Oral Med Oral Pathol Oral Radiol 2021 Mar 28:4600. Epub 2021 Mar 28.

Dental Sciences Research Center, Department of Biostatistics, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.

Objective: The objective was to assess the effects of object position, field of view (FOV) size, peak kilovoltage (kVp), and a metal artifact reduction (MAR) algorithm on metal artifacts in cone beam computed tomography (CBCT) as measured with an auto-edge counting method.

Study Design: A titanium implant and a stainless steel intracanal post in a root were inserted in bovine rib blocks. CBCT scans were acquired with changes in object position (incisor, canine, and premolar-molar areas), FOV, kVp, and MAR (on or off) mode. Read More

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Diffusion Tensor Imaging Reveals Whole-Brain Microstructural Changes in the P301L Mouse Model of Tauopathy.

Neurodegener Dis 2021 May 11:1-12. Epub 2021 May 11.

Institute for Biomedical Engineering, ETH & University of Zurich, Zurich, Switzerland.

Introduction: Increased expression of hyperphosphorylated tau and the formation of neurofibrillary tangles are associated with neuronal loss and white matter damage. Using high-resolution ex vivo diffusion tensor imaging (DTI), we investigated microstructural changes in the white and grey matter in the P301L mouse model of human tauopathy at 8.5 months of age. Read More

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LSVT BIG® and long-term retention of functional gains in individuals with Parkinson's disease.

Physiother Theory Pract 2020 Jun 17:1-8. Epub 2020 Jun 17.

Physical Therapy, University of Findlay, Findlay, OH, USA.

Purpose: The purpose of this study was to determine the long-term effects of LSVT BIG® on the function of individuals with Parkinson's Disease (PD).

Methods: Eighteen participants gave informed consent, and met the inclusion criteria. Time since diagnosis of PD ranged from . Read More

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Impact of Intensive Gait Training With and Without Electromechanical Assistance in the Chronic Phase After Stroke-A Multi-Arm Randomized Controlled Trial With a 6 and 12 Months Follow Up.

Front Neurosci 2021 22;15:660726. Epub 2021 Apr 22.

Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden.

Movement related impairments and limitations in walking are common long-term after stroke. This multi-arm randomized controlled trial explored the impact of training with an electromechanically assisted gait training (EAGT) system, i.e. Read More

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Effect of sintering and aging processes on the mechanical and optical properties of translucent zirconia.

J Prosthet Dent 2021 May 5. Epub 2021 May 5.

Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Bolu Abant Izzet Baysal University, Bolu, Turkey.

Statement Of Problem: Sintering holding times and aging conditions may affect the optical, mechanical, and structural properties of polychromatic multitranslucent zirconia. However, a consensus on the ideal sintering condition for this material is lacking.

Purpose: The purpose of this in vitro study was to investigate the effect of different sintering holding and autoclave aging times on the flexural strength (FS), grain size, and translucency parameter (TP) of a translucent zirconia. Read More

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The effect of rim preparation, labral augmentation and labral reconstruction on the suction seal of the hip.

Arthroscopy 2021 May 5. Epub 2021 May 5.

Section of Young Adult Hip Surgery, Division of Sports Medicine, Department of Orthopedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, IL.

Purpose: To evaluate the biomechanical properties of the labral suction seal in the native labrum and after rim preparation, labral augmentation, and labral reconstruction.

Methods: Eight hemi-pelvises were dissected to the level of labrum and mounted for biomechanical testing. Each specimen was tested in axial distraction starting with the native labrum and then sequentially following rim preparation from 12-3 o'clock, labral augmentation, and segmental labral reconstruction using iliotibial band allograft. Read More

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Temporary cement residues affect the bond strength and dentin penetration of self-adhesive resin cement in fiberglass post cementation.

Microsc Res Tech 2021 May 7. Epub 2021 May 7.

Department of Restorative Dentistry, Araraquara Dental School, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.

This study evaluated the persistence of eugenol-containing (PR, Provy) or eugenol-free (RT, Relyx Temp, and TB, Temp Bond) temporary cement residues and its effects on push-out bond strength and dentinal penetration of the self-adhesive resin cement (Relyx U200). Eighty human roots were endodontically treated and post space prepared. Fourty specimens were distributed in four groups (n = 10): Control (CO), without any clinical procedure, PR, RT, and TB, where a metallic post was cemented with one of the temporary cements. Read More

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Comparison of Orthodontic Bracket Debonding Force and Bracket Failure Pattern on Different Teeth In Vivo by a Prototype Debonding Device.

Biomed Res Int 2021 17;2021:6663683. Epub 2021 Apr 17.

Orthodontic Division, Preventive Dentistry Department, College of Dentistry, Jouf University, Sakaka, Saudi Arabia.

Objective: To compare the orthodontic bracket debonding force and assess the bracket failure pattern clinically between different teeth by a validated prototype debonding device. . Thirteen (13) patients at the end of comprehensive fixed orthodontic treatment, awaiting for bracket removal, were selected from the list. Read More

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Game Spacing and Density in Relation to the Risk of Injuries in the National Hockey League.

Orthop J Sports Med 2021 Apr 19;9(4):2325967121999401. Epub 2021 Apr 19.

Department of Neurology, Renaissance School of Medicine, Stony Brook University, Stony Brook, New York, New York, USA.

Background: Ice hockey has significant workload demands. Research of other sports has suggested that decreased rest between games as well as an increased workload may increase the risk of injuries.

Purpose: To evaluate whether condensed game schedules increase the frequency and severity of injuries in the National Hockey League (NHL). Read More

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Surface roughness of enamel and root surface after scaling, root planning and polishing procedures: An in-vitro study.

J Oral Biol Craniofac Res 2021 Apr-Jun;11(2):287-290. Epub 2021 Feb 27.

Pre-Doctoral Clinics, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA.

Objectives: The aim of this study was to evaluate enamel and root surface roughness on exracted human teeth by using different tecniques (ultrasonic scaler, hand instruments, polishing paste, pumice and air powder system).

Materials And Methods: A total of 200 samples were divided into two groups (enamel and root) randomly with 100 samples for each enamel and root groups. The groups were divided into 5 subgroups: Group I: ultrasonic scaler, group II: hand instruments, group III: polishing paste, group IV: pumice, group V: air-powder. Read More

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February 2021

Comparatıve assessment of thermal ınjury ınduced by bıpolar electrocautery systems ın a porcıne model.

Surg Neurol Int 2021 8;12:146. Epub 2021 Apr 8.

Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia, United States.

Background: Bipolar electrocautery systems used during neurosurgical procedures have been shown to induce thermal injury to surrounding tissue. The goal of this study was to compare the thermal injury induced by two different systems commonly used in neurosurgical procedures (Silverglide by Stryker Corporation and SpetzlerMalis by Codman Neuro), with that of a newly introduced device (TRIOwand by NICO Corporation).

Methods: A farm swine underwent craniectomy and durotomy with subsequent exposure of cortical brain tissue. Read More

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Effects of Forming Parameters on Fatigue Life in Incremental Sheet Punching.

Materials (Basel) 2021 Apr 29;14(9). Epub 2021 Apr 29.

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266525, China.

In order to investigate the effects of main forming parameters on the fatigue life in incremental sheet punching, wavelength and amplitude were selected as factors, and fatigue life of truncated pyramids and virgin material was selected as indicator. The effects of the parameters were identified whereby the design of full factorial experiment, fatigue comparative test, analysis of variance, Tukey test, and -test. It was found that wavelength and amplitude significantly affect the fatigue life. Read More

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Speeding up the clinical routine: Compressed sensing for 2D imaging of lumbar spine disc herniation.

Eur J Radiol 2021 Apr 29;140:109738. Epub 2021 Apr 29.

Philips Healthcare Germany, Hamburg, Germany.

Purpose: Increasing economic pressure and patient demands for comfort require an ever-increasing acceleration of scan times without compromising diagnostic certainty. This study tested the new acceleration technique Compressed SENSE (CS-SENSE) as well as different reconstruction methods for the lumbar spine.

Methods: In this prospective study, 10 volunteers and 14 patients with lumbar disc herniation were scanned using a sagittal 2D T2 turbo spin echo (TSE) sequence applying different acceleration factors of SENSE and CS-SENSE. Read More

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Comparative evaluation of color stability of three commercially available provisional restorative materials: An study.

J Indian Prosthodont Soc 2021 Apr-Jun;21(2):161-166

Department of Prosthodontics, Bangalore Institute of Dental Sciences and Research Centre, Bengaluru, Karnataka, India.

Aim: Esthetics of the provisional restorations is of prime importance to the patients especially in long term in the esthetic zone. Discolouration of these restorations may result in patient dissatisfaction and an additional expense for their replacement. LuxaCrown provisional material being new in market and claimed to be semi-permanent by the company needs to be evaluated for its colour stability. Read More

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Correlation of Mast Cell and Angiogenesis in Oral Lichen Planus, Dysplasia (Leukoplakia), and Oral Squamous Cell Carcinoma.

Rambam Maimonides Med J 2021 Apr 29;12(2). Epub 2021 Apr 29.

Oral and Maxillofacial Surgery, Asan Memorial Dental College and Hospital, Keerapakkam Village, Asan Nagar, Chengalpattu, India.

Objective: The aim of this study was to compare and correlate mast cell density (MCD) and microvessel density (MVD) between normal oral mucosa, oral lichen planus, various grades of dysplasia, and oral squamous cell carcinoma (OSCC).

Materials And Methods: The study comprised a total of 75 samples, of which 65 were archival tissue blocks of histopathologically confirmed cases, which included 10 cases of oral lichen planus, 25 cases of dysplasia (mild [n=10], moderate [n=10], and severe [n=5]), and 30 cases of OSCC (well differentiated [n=10], moderately differentiated [n=10], and poorly differentiated [n=10]), and 10 samples of normal oral mucosa. All the sections were immunohistochemically stained with anti-CD34 and counterstained with toluidine blue stain. Read More

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ISO 4049 versus NIST 4877: Influence of stress configuration on the outcome of a three-point bending test in resin-based dental materials and interrelation between standards.

Authors:
Nicoleta Ilie

J Dent 2021 Apr 30;110:103682. Epub 2021 Apr 30.

Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestr. 70, D-80336, Munich, Germany. Electronic address:

Objectives: The study aimed to find a relationship between the most common standards used in testing resin-based materials (RBC) in a three-point bend test - ISO 4049 and NIST 4877 - using a size-strength relationship defined by the Weibull model. The direct comparison of calculated and measured data is used for validation.

Methods: 280 (n = 20) specimens were prepared from seven different light-cured RBCs. Read More

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NMR-based leaf metabolic profiling of V. planifolia and three endemic Vanilla species from the Peruvian Amazon.

Food Chem 2021 Feb 23;358:129365. Epub 2021 Feb 23.

Pontificia Universidad Católica del Perú, Departamento de Ciencias - Química, CERMN, Av. Universitaria 1801, Lima 32, Peru. Electronic address:

The fruit of Vanilla planifolia is broadly preferred by the agroindustry and gourmet markets due to its refined flavor and aroma. Peruvian Vanilla has been proposed as a possible source for genetic improvement of existing Vanilla cultivars, but, little has been done to facilitate comprehensive studies of these and other Vanilla. Here, a nuclear magnetic resonance (NMR) metabolomic platform was developed to profile for the first time the leaves - organ known to accumulate vanillin putative precursors - of V. Read More

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February 2021

Is Cam Morphology Found in Ancient and Medieval Populations in Addition to Modern Populations?

Clin Orthop Relat Res 2021 04 29. Epub 2021 Apr 29.

R. W. Liu, Department of Pediatric Orthopaedics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH, USA.

Background: Cam morphology is thought to originate near puberty and reflects a response of the peripheral aspect of the proximal femoral physis to increased local load. Participation in particular sports activities has been associated with cam morphology in contemporary patient populations; however, it is unclear whether cam is a recent phenomenon. There are limited data regarding the frequency of its occurrence and the general deviations in femoral anatomy in different historical populations. Read More

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Color stability of an artificially aged nanofilled composite resin post-cured with different techniques.

J Dent Res Dent Clin Dent Prospects 2021 13;15(1):53-58. Epub 2021 Feb 13.

Department of Clinical Dentistry, Faculty of Dentistry, Federal University of Bahia, Brazil.

Post-cured composite resins exhibit improvements in physical and mechanical properties due to additional polymerization conversion. However, the post-curing techniques might influence the color stability of composite resin materials. Thus, this study evaluated the color stability of a nanofilled composite resin (Filtek Z350 XT - 3M ESPE) subjected to different post-curing techniques. Read More

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February 2021

Comparative evaluation of compressive and flexural strength, fluoride release and bacterial adhesion of GIC modified with CPP-ACP, bioactive glass, chitosan and MDPB.

J Dent Res Dent Clin Dent Prospects 2021 13;15(1):16-21. Epub 2021 Feb 13.

Department of Conservative Dentistry and Endodontics, Adhiparasakthi Dental College & Hospital, Melmaruvathur, India.

This study evaluated the incorporation of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), calcium sodium phosphosilicate bioactive glass (BAG), chitosan (CH), and methacryloyloxydodecylpyridinium bromide (MDPB) on the compressive and flexural strength, fluoride (F ) release, and bacterial adhesion of conventional glass-ionomer cement (C-GIC). Modifications were implemented by adding CPP-ACP, BAG, and CH to the glass powder, while MDPB-GIC was prepared by incorporating MDPB to the liquid of C-GIC. Custom-made molds were used for specimen preparation. Read More

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February 2021

Biochemical Profiling for Antioxidant and Therapeutic Potential of Pakistani Chickpea ( L.) Genetic Resource.

Front Plant Sci 2021 13;12:663623. Epub 2021 Apr 13.

Nuclear Institute for Agriculture and Biology College, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan.

In Pakistan, chickpeas ( L.) are the largest grown legume crops, especially in desert areas. Along with an excellent source of nutrition, chickpea seeds have discernible medicinal and antioxidant characteristics. Read More

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Effect of Multi-Strain Probiotic Supplementation on URTI Symptoms and Cytokine Production by Monocytes after a Marathon Race: A Randomized, Double-Blind, Placebo Study.

Nutrients 2021 Apr 27;13(5). Epub 2021 Apr 27.

Department of Bioscience, Universidade Federal de São Paulo, Santos 11015-020, Brazil.

(1) Purpose: Performing strenuous exercises negatively impacts the immune and gastrointestinal systems. These alterations cause transient immunodepression, increasing the risk of minor infections, especially in the upper respiratory tract. Recent studies have shown that supplementation of probiotics confers benefits to athletes. Read More

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Statistical Evaluation of the Material-Source Effects on the DSR Rheological Properties of Plant-Mix Extracted Asphalt-Binders.

Materials (Basel) 2021 Apr 13;14(8). Epub 2021 Apr 13.

Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA.

The work presented in this paper was carried out to statistically evaluate and quantify the material-source effect on the asphalt-binder's rheological properties using Analysis of Variance (ANOVA) and Tukey's Honestly Significant Difference (Tukey´s HSD) test. The study focused on the Asphalt-Binders' high-temperature rheological properties, namely, the G*, δ, G*/Sin(δ) and G*/(1 - (1/Tan(δ)Sin(δ))) parameters, measured using the Dynamic Shear Rheometer (DSR) device. The DSR data analyzed in the study were extracted from the Texas flexible pavements and overlays database, namely, the Texas Data Storage System (DSS), covering two Asphalt-Binders (ABs), performance grade (PG) 64-22 and PG 76-22 plant-mix extracted ABs that were treated as rolling thin film oven (RTFO) residue, and sourced from 14 different suppliers. Read More

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Biological Response Induced in Primary Human Gingival Fibroblasts upon Exposure to Various Types of Injectable Astringent Retraction Agents.

Materials (Basel) 2021 Apr 20;14(8). Epub 2021 Apr 20.

Department of Molecular and Cellular Biology, Wroclaw Medical University, 50-556 Wroclaw, Poland.

Traditional chemo-mechanical retraction/displacement materials can impact the gingival margin tissues. This study was undertaken to analyze biological responses induced in human gingival fibroblasts (HGFs) upon application of injectable astringent-based agents used in the cordless retraction technique. HGFs were exposed to hemostatic agents (five gels, three pastes, and one foam) based on aluminium chloride, aluminium sulphate and ferric sulphate. Read More

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Estradiol Priming Potentiates the Kisspeptin-Induced Release of LH in Ovariectomized Cows.

Animals (Basel) 2021 Apr 25;11(5). Epub 2021 Apr 25.

Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo 05508-270, Sao Paulo, Brazil.

The present study examined whether priming with estradiol benzoate (EB) for 12 h increased both the peak and duration of LH release in response to kisspeptin (KISS1, KP) in cows. In a Latin square design, ovariectomized Nelore cows ( = 8) received: Control, i.m. Read More

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