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Bulk fill composites

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https://www.readbyqxmd.com/read/29928832/amalgam-alternatives-cost-effectiveness-and-value-of-information-analysis
#1
F Schwendicke, G Göstemeyer, M Stolpe, J Krois
We aimed to assess the cost-effectiveness of amalgam alternatives-namely, incrementally placed composites (IComp), composites placed in bulk (BComp), and glass ionomer cements (GIC). In a sensitivity analysis, we also included composite inlays (CompI) and incrementally placed bulk-fills (IBComp). Moreover, the value of information (VOI) regarding the effectiveness of all strategies was determined. A mixed public-private-payer perspective in the context of Germany was adopted. Bayesian network meta-analyses were performed to yield effectiveness estimates (relative risk [RR] of failure)...
June 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29899634/comparative-evaluation-of-wear-resistance-of-cast-gold-with-bulk-fill-composites-an-in-vitro-study
#2
Arvind Kumar, A Sheerin Sarthaj, Dipak S Majumder
Aim: The aim of this study was to compare the wear resistance of cast gold with condensable bulk fill and a fiber reinforced bulk-fill composite. Materials and Methods: The 5 mm × 4 mm stainless steel molds were prepared for wear resistance. Forty-five samples were divided into three groups (n = 15). The samples were restored as follows: Group I: cast gold alloy (d. SIGN 98; Ivoclar Vivadent), Group II: fiber reinforced composite (Ever X Posterio; r GC Corp.), and Group III: condensable bulk-fill composite (Tetric N Ceram; Ivoclar Vivadent)...
May 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29899631/a-comparison-of-dentin-bond-strength-and-degree-of-polymerization-of-bulk-fill-and-methacrylate-based-flowable-composites
#3
Ozcan Karatas, Yusuf Ziya Bayindir
Objective: This study aimed to evaluate the dentin bond strength and degree of polymerization of bulk-fill and methacrylate-based flowable composites. Materials and Methods: Dentin bond strength of composites was evaluated using the microtensile bond strength (μTBS) test. Five different composites were applied on flat dentin surfaces with self-etch and etch-and-rinse adhesives. Twenty microspecimens with a 1 mm2 cross-sectional area were prepared for each group ( n = 20)...
May 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29857989/modification-of-the-restoration-protocol-for-resin-based-composite-rbc-restoratives-conventional-and-bulk-fill-on-cuspal-movement-and-microleakage-score-in-molar-teeth
#4
I Politi, L E J McHugh, R S Al-Fodeh, G J P Fleming
OBJECTIVE: To modify the resin-based composite (RBC) restoration protocol for standardised Class II cavities in third molar teeth restored using conventional RBCs or their bulk fill restorative counterparts. Employing cuspal deflection using a twin channel deflection measuring gauge (during) and microleakage to determine marginal integrity (following) RBC restoration, the modified restoration protocol results were compared with traditional (oblique) restoration of Class II cavities. METHODS: Thirty-two sound third molar teeth, standardised by size and morphology, were subjected to standardised Class II cavity preparations and randomly allocated to four groups...
May 29, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29850499/effects-of-fibers-on-color-and-translucency-changes-of-bulk-fill-and-anterior-composites-after-accelerated-aging
#5
Ali Riza Tuncdemir, Mehmet Esad Güven
The aim of this study was to determine the effects of glass and polyethylene fibers on the color and translucency change of bulk-fill and anterior composites before and after artificial accelerated aging (AAA). Two types of teflon molds were used to fabricate samples which were 13 mm in diameter and, respectively, 2 mm and 4 mm in height. Polyethylene fiber (PF) and glass fiber (GF) were incorporated in the middle of the composite samples. Color and translucency changes of each composite were evaluated before and after AAA with spectrophotometer...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29801683/effect-of-light-curing-units-on-the-polymerization-of-bulk-fill-resin-based-composites
#6
Carlos Alberto Kenji Shimokawa, Míriam Lacalle Turbino, Marcelo Giannini, Roberto Ruggiero Braga, Richard Bengt Price
OBJECTIVE: To determine the potential effect of four different light curing units (LCUs) on the curing profile of two bulk fill resin-based composites (RBCs). METHODS: Four LCUs (Bluephase 20i, Celalux 3, Elipar DeepCure-S and Valo Grand) were used to light cure two RBCs (Filtek Bulk Fill Posterior Restorative and Tetric EvoCeram Bulk Fill). The effective tip diameter, radiant power, radiant emittance, emission spectrum and light beam profile of the LCUs were measured...
May 22, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29793795/effect-of-selective-carious-tissue-removal-on-biomechanical-behavior-of-class-ii-bulk-fill-dental-composite-restorations
#7
Paula Fernanda Damasceno Silva, Lais Rani Sales Oliveira, Stella Sueli Lourenço Braga, Cácia Signori, Steve R Armstrong, Carlos José Soares, Maximiliano Sérgio Cenci, André Luis Faria-E-Silva
OBJECTIVES: This study aimed to develop a method to induce carious lesions in the pulpal floor dentin of a class II cavity preparation, and to determine the effects of this carious lesion on the biomechanical behavior of the dental composite restoration. METHODS: The pulpal floor dentin of class I cavities in sound third molars were demineralised with acetic acid for 35days followed by a 7-day exposure to pooled human saliva biofilm and demineralization was verified by micro-CT...
May 21, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29783839/doping-zno-electron-transport-layers-with-mos2-nanosheets-enhances-the-efficiency-of-polymer-solar-cells
#8
Yi-Jiun Huang, Hsiu-Cheng Chen, Hsi-Kuei Lin, Kung-Hwa Wei
In this study, we incorporated molybdenum disulfide (MoS2) nanosheets into sol-gel processing of zinc oxide (ZnO) to form ZnO:MoS2 composites for use as electron transport layers (ETLs) in inverted polymer solar cells featuring a binary bulk heterojunction active layer. We could effectively tune the energy band of the ZnO:MoS2 composite film from 4.45 to 4.22eV by varying the content of MoS2 up to 0.5 wt%, such that the composite was suitable for use in bulk heterojunction photovoltaic devices based on poly[bis(5-(2-ethylhexyl)thien-2-yl)benzodithiophene-alt-(4-(2-ethylhexyl)-3-fluorothienothiophene)-2-carboxylate-2,6-diyl)] (PTB7-TH):phenyl-C71-butryric acid methyl ester (PC71BM)...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29777311/sufficiency-of-curing-in-high-viscosity-bulk-fill-resin-composites-with-enhanced-opacity
#9
Nicoleta Ilie
OBJECTIVES: The study aims analyzing if improved opacity in modern high-viscosity bulk-fill resin composites (BF-RBC) contradicts with the sufficiency of curing and to assess material's tolerance to less ideal curing conditions. MATERIALS AND METHODS: Simulated large cavities (10 × 6) mm were filled in one increment with three BF-RBCs (Filtek One, FO; Tetric Evo Ceram Bulk Fill, TEC-BF; SonicFill2, SF2). One central and two peripheral (4 mm apart from the center) micromechanical property line-profiles (HV, Vickers hardness; YHU , indentation modulus) were measured in 0...
May 18, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29732015/push-out-bond-strength-of-intra-orifice-barrier-materials-bulk-fill-composite-versus-calcium-silicate-cement
#10
Taha Özyurek, Gülşah Uslu, Koray Yilmaz
Background. The aim of this study was to compare the push-out bond strengths of calcium silicate-based ProRoot MTA and Biodentine cements and SureFil SDR and EverX Posterior bulk-fill composite resins. Methods. Twenty-four single-rooted maxillary central incisors were sectioned below the cementoenamel junction, and the root canals were instrumented using rotary files. Thereafter, a parallel post drill was used to obtain a standardized root canal dimension. The roots were randomly assigned to one of the following groups with respect to the intra-orifice barrier used: ProRoot MTA; Biodentine; SureFil SDR; EverX Posterior...
2018: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/29719754/single-crystalline-feco-nanoparticle-filled-carbon-nanotubes-synthesis-structural-characterization-and-magnetic-properties
#11
Rasha Ghunaim, Maik Scholz, Christine Damm, Bernd Rellinghaus, Rüdiger Klingeler, Bernd Büchner, Michael Mertig, Silke Hampel
In the present work, we demonstrate different synthesis procedures for filling carbon nanotubes (CNTs) with equimolar binary nanoparticles of the type Fe-Co. The CNTs act as templates for the encapsulation of magnetic nanoparticles and provide a protective shield against oxidation as well as prevent nanoparticle agglomeration. By variation of the reaction parameters, we were able to tailor the sample purity, degree of filling, the composition and size of the filling particles, and therefore, the magnetic properties...
2018: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/29714704/depth-of-cure-of-proximal-composite-resin-restorations-using-a-new-perforated-metal-matrix
#12
Duke P Nguyen, Nancy C Motyka, Erik J Meyers, Kraig S Vandewalle
The purpose of this study was to compare the depths of cure of a proximal box preparation filled in bulk with various approaches: filled with a bulk-fill or conventional composite; placed with a new perforated metal matrix, a traditional metal matrix, or a clear matrix; and polymerized with either occlusal-only or tri-sited light curing. After tri-sited curing, the use of the new perforated metal matrix band resulted in a depth of cure that was not significantly different from that achieved with the use of metal bands (removed during curing) or transparent matrix bands...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29714702/effect-of-fiber-inserts-on-gingival-margin-microleakage-of-class-ii-bulk-fill-composite-resin-restorations
#13
Fereshteh Shafiei, Maryam Doozandeh, Vahid Karimi
This study evaluated the effect of fiber inserts combined with composite resins on enamel and dentin margin microleakage. The fiber inserts were used with high- (x-tra fil) and low-viscosity (x-tra base) bulk-fill composite resins and as well as conventional composite resins (Grandio and Grandio Flow). In 96 sound, recently extracted molars, 2 standardized Class II cavities were prepared. The teeth were randomly divided into 8 groups of 12 teeth each, based on composite resin type and presence or absence of fiber inserts: groups 1 and 2, x-tra fil with and without fiber inserts, respectively; groups 3 and 4, x-tra base with and without fiber inserts; groups 5 and 6, Grandio with and without fiber inserts; and groups 7 and 8, Grandio Flow liner (gingival floor)/Grandio (remainder of cavity) with and without fiber inserts...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29689648/qualitative-analysis-of-the-margins-of-restorations-made-with-different-filling-resins
#14
Monika Ostapiuk, Bożena Tarczydło, Barbara Surowska, Mirosław Orłowski, Barbara Tymczyna, Teresa Bachanek, Anna Rzepecka, Anna Mróz
PURPOSE: In this study the comparative results obtained from examinations of two different restorative composites with different cavities filling method are presented. Micro-CT was used for the evaluation of the marginal integrity and quality of composite fillings in connection with microstructural investigations made by both optical and scanning electron microscopy. MATERIALS AND METHODS: The examinations of dental tooth filings in bulk-fill technique were based on micro-CT and microscopy observations...
April 24, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29689293/molar-cusp-deformation-evaluated-by-micro-ct-and-enamel-crack-formation-to-compare-incremental-and-bulk-filling-techniques
#15
Laís Rani Sales Oliveira, Stella Sueli Lourenço Braga, Aline Arêdes Bicalho, Maria Tereza Hordones Ribeiro, Richard Bengt Price, Carlos José Soares
OBJECTIVES: To describe a method of measuring the molar cusp deformation using micro-computed tomography (micro-CT), the propagation of enamel cracks using transillumination, and the effects of hygroscopic expansion after incremental and bulk-filling resin composite restorations. METHODS: Twenty human molars received standardized Class II mesio-occlusal-distal cavity preparations. They were restored with either a bulk-fill resin composite, X-tra fil (XTRA), or a conventional resin composite, Filtek Z100 (Z100)...
July 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29676977/flared-roots-reinforced-with-bulk-fill-flowable-composite-case-report
#16
R Braz, V A Mergulhão, L R Oliveira, M S Alves, C A Canto
This article presents a case report for the treatment of a patient with a flared root. The patient was treated with a bulk-fill flowable composite. This innovative approach seems to be efficient in reinforcing flared roots. The advantages and disadvantages of the technique are presented.
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29627738/polymerization-shrinkage-stress-of-resin-based-dental-materials-a-systematic-review-and-meta-analyses-of-composition-strategies
#17
REVIEW
Carine Tais Welter Meereis, Eliseu Aldrighi Münchow, Wellington Luiz de Oliveira da Rosa, Adriana Fernandes da Silva, Evandro Piva
PURPOSE: A systematic review was conducted to determine whether there were composition strategies available to reduce and control polymerization shrinkage stress development in resin-based restorative dental materials. DATA SOURCES: This report was reported in accordance with the PRISMA Statement. Two reviewers performed a literature search up to December 2016, without restriction of the year of publication, in seven databases: PubMed, Web of Science, Scopus, SciELO, LILACS, IBECS, and BBO...
June 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29594827/cytotoxic-and-biological-effects-of-bulk-fill-composites-on-rat-cortical-neuron-cells
#18
Hakan Kamalak, Aliye Kamalak, Ali Taghizadehghalehjoughi, Ahmet Hacımüftüoğlu, Kemal Alp Nalcı
The aim of this study was to investigate potential cellular responses and biological effects of new generation dental composites on cortical neuron cells in two different exposure times. The study group included five different bulk-fill flow able composites; Surefil SDR Flow, X-tra Base Flow, Venus Bulk Flow, Filtek Bulk Flow and Tetric-Evo Flow. They were filled in Teflon molds (Height: 4 mm, Width: 6 mm) and irradiated for 20 s. Cortical neuron cells were inoculated into 24-well plates. After 80% of the wells were coated, the 3 µm membrane was inserted and dental filling materials were added...
March 28, 2018: Odontology
https://www.readbyqxmd.com/read/29594349/clinical-performance-of-bulk-fill-and-conventional-resin-composite-restorations-in-posterior-teeth-a-systematic-review-and-meta-analysis
#19
Sirley Raiane Mamede Veloso, Cleidiel Aparecido Araújo Lemos, Sandra Lúcia Dantas de Moraes, Belmiro Cavalcanti do Egito Vasconcelos, Eduardo Piza Pellizzer, Gabriela Queiroz de Melo Monteiro
OBJECTIVES: The purpose of this systematic review was to compare the clinical performance of bulk-fill resin composites with conventional resin composites used for direct restorations of posterior teeth. METHODS: This review followed the PRISMA statement. This review was registered at PROSPERO (registration number CRD42016053436). A search of the scientific literature was performed by two independent reviewers using the PubMed/MEDLINE, Embase, The Cochrane Library, and Web of Science databases from commencement until January 2018...
March 28, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29576574/efficiency-of-light-curing-units-in-a-government-dental-school
#20
Hani M Nassar, Reem Ajaj, Fatin Hasanain
The light intensity of a light-curing unit is a crucial factor that affects the clinical longevity of resin composites. This study aimed to investigate the efficiency of light-curing units in use at a local governmental dental school for curing conventional and bulk-fill resin materials. A total of 166 light-curing units at three locations were examined, and the brand, type, clinic location, diameter of curing tip, tip cleanliness (using a visual score), and the output (in mW/cm2 using a digital radiometer) were recorded...
2018: Journal of Oral Science
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