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Dental composite

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https://www.readbyqxmd.com/read/28713512/laboratory-evaluation-of-the-effect-of-unfilled-resin-after-the-use-of-self-etch-and-total-etch-dentin-adhesives-on-the-shear-bond-strength-of-composite-to-dentin
#1
Ehsan Baradaran Nasseri, Sara Majidinia, Davood Aghasizadeh Sharbaf
BACKGROUND: Based on the frequent application of composite resins as tooth-colored fillings, this method is considered a viable alternative to dental amalgam. However, this method has the low bond strength of the composite to dentin. To solve this issue, various dental adhesive systems with different characteristics have been developed by dentistry experts. AIM: To assess the effect of an additional layer of unfilled resin in self-etch and total-etch dentin adhesives on the shear bond strength (SBS) of composite to dentin...
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28713119/adhesive-bonding-to-computer-aided-design-computer-aided-manufacturing-esthetic-dental-materials-an-overview
#2
Mohamed Moustafa Awad, H Alqahtani, A Al-Mudahi, M S Murayshed, A Alrahlah, Shilpa H Bhandi
AIM: To review the adhesive bonding to different computer-aided design/computer-aided manufacturing (CAD/CAM) esthetic restorative materials. BACKGROUND: The use of CAD/CAM esthetic restorative materials has gained popularity in recent years. Several CAD/ CAM esthetic restorative materials are commercially available. Adhesive bonding is a major determinant of success of CAD/ CAM restorations. Review result: An account of the currently available bonding strategies are discussed with their rationale in various CAD/ CAM materials...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28713111/effect-of-hydrogen-and-carbamide-peroxide-in-bleaching-enamel-morphology-and-mineral-composition-in-vitro-study
#3
Carmen Llena, Irene Esteve, Leopoldo Forner
AIM: The aim of the study was to evaluate the bleaching effect, morphological changes, and variations in calcium (Ca) and phosphate (P) in the enamel with hydrogen peroxide (HP) and carbamide peroxide (CP) after the use of different application regimens. MATERIALS AND METHODS: Four groups of five teeth were randomly assigned, according to the treatment protocol: HP 37.5% applied for 30 or 60 minutes (HP30, HP60), CP 16% applied for 14 or 28 hours (CP14, CP28). Changes in dental color were evaluated, according to the following formula: ΔE = [(La-Lb)(2)+(aa-ab)(2) + (ba-bb)(2)](1/2)...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28713085/-the-dependence-of-the-marginal-adaptation-of-composite-fillings-in-caries-cavities-of-class-ii-by-black-on-the-state-of-oral-hygiene-and-intensity-of-caries
#4
Елена В Павленкова, Ирина М Ткаченко, Алла И Сидорова, Светлана А Павленко
INTRODUCTION: The problem of treatment of dental caries by fillings in dentistry is the key point in dentistry. Thus the main issue is the long-term functioning of the restorations. Particularly acute, this problem in the reduction of cavities class II according to Black, where the pressure on the filling is sufficiently high. MATERIALS AND METHODS: It was examined and treated 87 patients with different levels of oral hygiene of oral cavity and caries of varying intensity and whom 186 defects of hard tissues of teeth class II Black were fitted...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28711894/-markers-of-dental-children-s-health-in-the-application-of-therapeutic-orthodontic-equipment
#5
Аліса В Пачевська, Аліна В Білошицька
INTRODUCTION: Treatment of teeth anomalies using removable and non-removable orthodontic devices in children leads to complications such as caries, gingivitis, periodontitis, oral mucosa hyperplasia. Etiopathogenetical of these diseases can be associated with biochemical changes in the composition of saliva. AIM: To determine the activity of lysozyme and amylase in oral fluid in children when using a fixed and removable orthodontic devices. MATERIALS AND METHODS: Amylase and lysozyme were studied in oral fluid...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28711338/in-vitro-cytocompatibility-of-dental-resin-monomers-on-osteoblast-like-cells
#6
Dominik Kraus, Markus Wolfgarten, Norbert Enkling, Ernst-Heinrich Helfgen, Matthias Frentzen, Rainer Probstmeier, Jochen Winter, Helmut Stark
OBJECTIVES: Dental resin-based materials are widely used in modern dentistry. Especially, resin cements enjoy great popularity and are utilized in many applications. Nevertheless, monomers could be released from the resinous matrix, thus interact with surrounding tissues, cause adverse biological reactions and may lead in cases of implant retained restorations to peri-implant bone destruction. Hence, we performed an in-vitro study to determine cytotoxicity of resin monomers on osteoblast-like cells...
July 12, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28705510/the-chemical-composition-of-the-pharmacologically-active-thymus-species-its-antibacterial-activity-against-streptococcus-mutans-and-the-antiadherent-effects-of-t-vulgaris-on-the-bacterial-colonization-of-the-in-situ-pellicle
#7
Gesche Schött, Stefanie Liesegang, Franziska Gaunitz, Alexandra Gleß, Sabine Basche, Christian Hannig, Karl Speer
The pharmacological active genus Thymus L. comprises over 200 species. Besides its traditional pharmacological use, thyme may reduce the risk of caries disease, however, there is very little respective literature. The pharmacological effects can be attributed to the secondary plant metabolites. The composition of the essential oil and the polyphenols is important for the evaluation of the pharmacological activity. Nevertheless, there are no studies regarding a comparative analysis of the different pharmacological thyme species...
July 10, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28700083/torsional-resistance-of-xp-endo-shaper-at-body-temperature-compared-with-several-nickel-titanium-rotary-instruments
#8
A M Elnaghy, S E Elsaka
AIM: To compare the torsional resistance of XP-endo Shaper (XPS; size 30, 0.01 taper, FKG Dentaire, La Chaux-de-Fonds, Switzerland) instruments at body temperature with TRUShape (TRS; size 30, 0.06 taper, Dentsply Tulsa Dental Specialties, Tulsa, OK, USA), ProFile Vortex (PV; size 30, 0.04 taper, Dentsply Tulsa Dental Specialties), and FlexMaster (FM; size 30, 0.04 taper, VDW GmbH, Munich, Germany) nickel-titanium rotary instruments. METHODOLOGY: A metal block with a square-shaped mould (5 mm × 5 mm × 5 mm) was positioned inside a glass-container...
July 12, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28698331/efficacy-of-conventional-treatment-with-composite-resin-and-atraumatic-restorative-treatment-in-posterior-primary-teeth-study-protocol-for-a-randomised-controlled-trial
#9
Nathalia Miranda Ladewig, Cíntia Saori Sahiara, Laysa Yoshioka, Isabel Cristina Olegário, Isabela Floriano, Tamara Kerber Tedesco, Fausto Medeiros Mendes, Mariana Minatel Braga, Daniela Procida Raggio
INTRODUCTION: Despite the widespread acceptance of conventional treatment using composite resin in primary teeth, there is limited evidence that this approach is the best option in paediatric clinics. Atraumatic restorative treatment (ART) using high-viscosity glass ionomer cement has gradually become more popular because it performs well in clinical studies, is easy to handle and is patient friendly. Therefore, the aim of this randomised clinical trial study is to compare the restoration longevity of conventional treatment using composite resin with that of ART in posterior primary teeth...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28691459/periodontal-microbioma-and-rheumatoid-arthritis-the-role-of-porhyromonas-gingivalis
#10
L Azzi, S Rania, R Vinci, F Spadari, F Croveri, C Scognamiglio, D Farronato, L Tettamanti, A Tagliabue, J Silvestre-Rangil, C Bellintani
Rheumatoid Arthritis is a disease, which can be described as an autoimmune response after molecular mimicry caused by infective agents. The current study aims at evaluating the correlation between Rhematoid Arthritis (RA) and Periodontal Disease (PD), with special attention to the microbioma detected in the gums. Thirty-four patients with RD were recruited into the current study. Among rheumatic parameters, Rheumatoid Factor (RF), anti-citrullinated protein antibody (CCP), HLA-BDR1 and DAS28 were collected...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28691235/outcomes-of-the-conventional-and-biological-treatment-approaches-for-the-management-of-caries-in-the-primary-dentition
#11
Alaa BaniHani, Monty Duggal, Jack Toumba, Chris Deery
BACKGROUND: In the last few years, conventional restorations including complete removal of carious tissue (CT) with or without pulp therapy for the treatment of carious lesions (CL) in primary teeth have been challenged and a more biological approach has been suggested. This approach involves the use of less invasive techniques which alter the environment of the CL isolating it from the cariogenic biofilm and substrate. Two of these treatment approaches that are becoming increasingly widely accepted and used in paediatric dentistry are the Hall Technique and indirect pulp capping (IPC)...
July 9, 2017: International Journal of Paediatric Dentistry
https://www.readbyqxmd.com/read/28691101/advancing-discontinuous-fiber-reinforced-composites-above-critical-length-for-replacing-current-dental-composites-and-amalgam
#12
Richard C Petersen
Clinicians have been aware that posterior dental particulate-filled composites (PFCs) have many placement disadvantages and indeed fail clinically at an average rate faster than amalgam alloys. Secondary caries is most commonly identified as the chief failure mechanism for both dental PFCs and amalgam. In terms of a solution, fiber-reinforced composites (FRCs) above critical length (Lc) can provide mechanical property safety factors with compound molding packing qualities to reduce many problems associated with dental PFCs...
February 2017: Journal of Nature and Science
https://www.readbyqxmd.com/read/28688180/effect-of-silver-diamine-fluoride-sdf-on-the-dentin-pulp-complex-ex-vivo-histological-analysis-on-human-primary-teeth-and-rat-molars
#13
Glenda Rossi, Aldo Squassi, Patricia Mandalunis, Andrea Kaplan
The aim of this study was to determine the effect of SDF on the dentin-pulp complex using two models: teeth after SDF application (ex vivo) and experimental animal molars. A descriptive study was performed using two models. In the first model, primary teeth (ex vivo) with enamel-dentin caries, without pulp involvement and previously treated with 38% SDF, were evaluated by means of two techniques: (a) Scanning Electron Microscopy (SEM) and energy-dispersive X-ray detector (EDS) to determine qualitative and quantitative composition, and (b) brightfield optical microscopy (OM) after decalcification...
April 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28678973/translucency-and-color-stability-of-resin-composite-and-dental-adhesives-as-modeling-liquids-a-one-year-evaluation
#14
José Augusto Sedrez-Porto, Eliseu Aldrighi Münchow, Maximiliano Sérgio Cenci, Tatiana Pereira-Cenci
The aim of this study is to evaluate the influence of modeling liquids on the translucency and color shade of resin composites (RCs) after one year of storage. RC specimens were prepared using either a conventional insertion technique (control; without modeling liquid) or a restorative dental modeling insertion technique (RDMIT) with dental adhesives as modeling liquids (Scotchbond™ Multi-Purpose [SBMP; 3M ESPE] or Adper™ Single Bond 2 [SB; 3M ESPE]). The initial colors of the specimens were obtained with a digital spectrophotometer and the CIEL*a*b* color system, after which specimens were stored (37°C) in distilled water or red wine for 12 months...
July 3, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28678838/the-oral-bacterial-microbiome-of-occlusal-surfaces-in-children-and-its-association-with-diet-and-caries
#15
Apoena Aguiar Ribeiro, Maria Andrea Azcarate-Peril, Maria Belen Cadenas, Natasha Butz, Bruce J Paster, Tsute Chen, Eric Bair, Roland R Arnold
Dental caries is the most prevalent disease in humans globally. Efforts to control it have been invigorated by an increasing knowledge of the oral microbiome composition. This study aimed to evaluate the bacterial diversity in occlusal biofilms and its relationship with clinical surface diagnosis and dietary habits. Anamneses were recorded from thirteen 12-year-old children. Biofilm samples collected from occlusal surfaces of 46 permanent second molars were analyzed by 16S rRNA amplicon sequencing combined with the BLASTN-based search algorithm for species identification...
2017: PloS One
https://www.readbyqxmd.com/read/28677589/regeneration-of-periapical-lesions-post-endodontic-treatment-and-periapical-surgeries-in-experimental-animals-utilizing-thermo-responsive-nano-%C3%AE-tricalcium-phosphate-chitosan-hydrogel-a-proof-of-concept
#16
Wafa I Abdel-Fattah, Salma Hassan El Ashry, Ghareib W Ali, Mohamed Aiad Abdel Hamid, Amina Gamal El-Din, Bassma El-Ashry
Using phosphate nanoparticles/polymeric hydrogels presents an interesting approach, especially concerning the reduced particle migration and enhanced biocompatibility. The current work aims to achieve a proof of concept for the development of a thermo-sensitive nano β-tricalcium phosphate (β-TCP)/chitosan (Cs)/glycerophosphate (Gl)/glyoxal (Gly) hydrogel to be applied in periapical surgeries post endodontic treatment. Physicochemical characterization using x-ray powder diffraction, Fourier transform infrared, TEM and SEM was performed...
July 5, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28676434/multifunctional-bioactive-glass-and-glass-ceramic-biomaterials-with-antibacterial-properties-for-repair-and-regeneration-of-bone-tissue
#17
REVIEW
João S Fernandes, Piergiorgio Gentile, Ricardo A Pires, Rui L Reis, Paul V Hatton
Bioactive glasses (BGs) and related glass-ceramic biomaterials have been used in bone tissue repair for over 30years. Previous work in this field was comprehensively reviewed including by their inventor Larry Hench, and the key features and properties of BGs are well understood. More recently, attention has focused on their modification to further enhance the osteogenic behaviour, or further compositional changes that may introduce additional properties, such as antimicrobial activity. Evidence is emerging that BGs and related glass-ceramics may be modified in such a way as to simultaneously introduce more than one desirable property...
July 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28668961/single-nucleotide-polymorphism-in-the-aetiology-of-caries-systematic-literature-review
#18
Paula Piekoszewska-Ziętek, Anna Turska-Szybka, Dorota Olczak-Kowalczyk
Recent progress in the field of molecular biology and techniques of DNA sequence analysis allowed determining the meaning of hereditary factors of many common human diseases. Studies of genetic mechanisms in the aetiology of caries encompass, primarily, 4 main groups of genes responsible for (1) the development of enamel, (2) formation and composition of saliva, (3) immunological responses, and (4) carbohydrate metabolism. The aim of this study was to present current knowledge about the influence of single nucleotide polymorphism (SNP) genetic variants on the occurrence of dental caries...
July 1, 2017: Caries Research
https://www.readbyqxmd.com/read/28668306/periodontal-status-in-18-year-old-lithuanian-adolescents-an-epidemiological-study
#19
Eglė Bendoraitienė, Jūratė Zūbienė, Ingrida Vasiliauskienė, Kristina Saldūnaitė, Vilija Andruškevičienė, Nomeda Basevičienė, Eglė Slabšinskienė
OBJECTIVE: The aim of this study was to investigate the periodontal and oral hygiene status of 18-year-old Lithuanian adolescents. MATERIALS AND METHODS: Cross-sectional data were collected by a multistage sampling approach that was used to draw a representative sample of 1063 adolescents attending schools. In total, 20 schools from the alphabetical list of educational institutions in Lithuania agreed to participate. Periodontal status was evaluated using the Periodontal Screening and Recording (PSR) index...
June 23, 2017: Medicina
https://www.readbyqxmd.com/read/28665777/longevity-of-anterior-composite-restorations-in-a-general-dental-practice-based-network
#20
K Collares, N J M Opdam, M Laske, E M Bronkhorst, F F Demarco, M B Correa, M C D N J M Huysmans
This practice-based study investigated the performance of a large set of anterior composite restorations placed by a group of 24 general practices. Based on data from electronic patient files, the longevity of 72,196 composite restorations was analyzed, as placed in 29,855 patients by 47 general dental practitioners between 1996 and 2011. Annual failure rates (AFRs) were calculated, and variables associated with failure were assessed by multivariate Cox regression analysis with shared frailty for 2 age groups (5 to 24 y and ≥25 y)...
June 1, 2017: Journal of Dental Research
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