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Composite resin fillings

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https://www.readbyqxmd.com/read/29324684/comparative-effect-of-self-or-dual-curing-on-polymerization-kinetics-and-mechanical-properties-in-a-novel-dental-resin-based-composite-with-alkaline-filler-running-title-resin-composites-with-alkaline-fillers
#1
Nicoleta Ilie
Dental bulk-fill restorations with resin-composites (RBC) are increasing in popularity, but doubts concerning insufficient curing in depth still disconcert clinicians. An alternative might be offered by modern dual-cured RBCs, which additionally provide bioactive properties. This study assessed the impact of additional light-curing on polymerization kinetics, the degree of conversion (DC) and mechanical properties of a novel, dual-cured RBC with alkaline fillers. Since the bioactivity of a material often implies a release of compounds, the mechanical stability in simulated clinical environments was also evaluated...
January 11, 2018: Materials
https://www.readbyqxmd.com/read/29322626/restorations-in-primary-teeth-a-systematic-review-on-survival-and-reasons-for-failures
#2
REVIEW
Luiz Alexandre Chisini, Kauê Collares, Mariana Gonzalez Cademartori, Luísa Jardim Corrêa de Oliveira, Marcus Cristian Muniz Conde, Flávio Fernando Demarco, Marcos Britto Corrêa
BACKGROUND: Several restorative materials with specific indications are used for filling cavities in primary teeth. AIM: To systematically review the literature in order to investigate the longevity of primary teeth restorations and the reasons for failure. DESIGN: Electronic databases were screened, and eligible studies were hand-searched to find longitudinal clinical studies evaluating the survival of restorations (class I, class II, and crown) placed with different materials in primary teeth with at least one year of follow-up...
January 10, 2018: International Journal of Paediatric Dentistry
https://www.readbyqxmd.com/read/29306395/application-of-solid-phase-adsorption-toxin-tracking-spatt-devices-for-the-field-detection-of-gambierdiscus-toxins
#3
Mélanie Roué, Hélène Taiana Darius, Jérôme Viallon, André Ung, Clémence Gatti, D Tim Harwood, Mireille Chinain
Ciguatera fish poisoning is a food-borne illness caused by the consumption of seafood contaminated with ciguatoxins (CTXs) produced by dinoflagellates in the Gambierdiscus genus. Since most surveillance programs currently rely on the survey of Gambierdiscus cell densities and species composition, supplementary toxin-based methods allowing the time- and spatially integrated sampling of toxins in ciguateric environments are needed for a more reliable assessment and management of the risks associated with Gambierdiscus proliferation...
January 2018: Harmful Algae
https://www.readbyqxmd.com/read/29284100/cuspal-deflection-in-premolar-teeth-restored-with-bulk-fill-resin-based-composite-materials
#4
M M Elsharkasi, J A Platt, N B Cook, G H Yassen, B A Matis
The present study investigated the effect of three high-viscosity bulk-fill resin-based composite materials on cuspal deflection in natural teeth. Thirty-two sound maxillary premolar teeth with large slot mesio-occlusal-distal cavities were distributed into four groups (n=8). Three groups were restored with bulk-fill resin composite materials (Tetric EvoCeram Bulk Fill, Ivoclar Vivadent, Schaan, Liechtenstein; x-tra fil, VOCO, Cuxhaven, Germany; and SonicFill, Kerr, Orange, CA, USA) in a single 4-mm increment...
January 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29284075/atraumatic-restorative-treatment-versus-conventional-restorative-treatment-for-managing-dental-caries
#5
REVIEW
Mojtaba Dorri, Maria José Martinez-Zapata, Tanya Walsh, Valeria Cc Marinho, Aubrey Sheiham Deceased, Carlos Zaror
BACKGROUND: Dental caries is a sugar-dependent disease that damages tooth structure and, due to loss of mineral components, may eventually lead to cavitation. Dental caries is the most prevalent disease worldwide and is considered the most important burden of oral health. Conventional treatment methods (drill and fill) involve the use of rotary burs under local anaesthesia. The need for an electricity supply, expensive handpieces and highly trained dental health personnel may limit access to dental treatment, especially in underdeveloped regions...
December 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29251454/effects-of-cigarette-smoking-on-color-stability-of-dental-resin-composites
#6
Xiaoyi Zhao, Filippo Zanetti, Shoaib Majeed, Jie Pan, Hans Malmstrom, Manuel C Peitsch, Julia Hoeng, Yanfang Ren
PURPOSE: To evaluate the effect of simulated toothbrush abrasion on the surface gloss, the surface roughness and the color stability of incrementally-filled and bulk-fill composites. METHODS: 48 dimensionally standardized composite specimens (n= 8/group) were made from four incrementally-filled composites (Tetric EvoCeram, IPS Empress Direct Enamel, Ceram X mono and Arabesk) and two bulk-fill composites (Quix fil and Tetric EvoCeram Bulk). Before and after toothbrushing simulation the surface gloss was measured by a glossmeter, the surface roughness was evaluated with a profilometer, and the color was measured using a spectrophotometer...
December 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29248963/effects-of-occlusal-cavity-configuration-on-3d-shrinkage-vectors-in-a-flowable-composite
#7
Dalia Kaisarly, Moataz El Gezawi, Guangyun Lai, Jian Jin, Peter Rösch, Karl-Heinz Kunzelmann
OBJECTIVE: The objective of this study was to investigate the effects of cavity configuration on the shrinkage vectors of a flowable resin-based composite (RBC) placed in occlusal cavities. MATERIALS AND METHODS: Twenty-seven human molars were divided into three groups (n = 9) according to cavity configuration: "adhesive," "diverging," and "cylindrical." The "adhesive" cavity represented beveled enamel margins and occlusally converging walls, the "diverging" cavity had occlusally diverging walls, and the "cylindrical" cavity had parallel walls (diameter = 6 mm); all cavities were 3 mm deep...
December 16, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29225652/repair-of-iatrogenic-furcal-perforation-with-mineral-trioxide-aggregate-a-seven-year-follow-up
#8
Jardel Camilo do Carmo Monteiro, Mateus Rodrigues Tonetto, Matheus Coêlho Bandeca, Alvaro Henrique Borges, José Cláudio Martins Segalla, Keren Cristina Fagundes Jordão-Basso, Cristian Fernando Sanchez-Puetate, Milton Carlos Kuga
Teeth with furcal perforation present difficult resolution and dubious prognosis. Several materials have been proposed and calcium silicate-based cements such as mineral trioxide aggregate (MTA) are the most recommended. However, its long-term clinical behavior still remains poorly understood. The present study reports a clinical case of furcal perforation repair using Angelus MTA, with a 7-year follow-up. Patient sought treatment 2 months after iatrogenic accident. First lower right molar presented clinical signs such as fistula and bone loss between mesial and distal roots...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29217962/spectrophotometric-evaluation-of-crown-fragment-a-year-after-reattachment-using-fiber-reinforced-post-a-case-report
#9
Fundaoğlu Funda Küçükekencı, Ahmet Serkan Küçükekencı
Background: Crown fracture is the most common type of fracture and frequently affects the anterior teeth. Crown fractures have been treated in several ways depending on the location and kind of fracture. This case emphasizes reattachment of fractured fragments using fiber-reinforced post. Also this case report underlines the related aesthetic concerns of reattaching of the fractured fragment. Case Report: Intraorally, examination revealed a complicated crown-root fracture of the left maxillary central (#21) and lateral incisor (#22)...
September 2017: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/29205770/effect-of-tooth-brushing-on-gloss-retention-and-surface-roughness-of-five-bulk-fill-resin-composites
#10
Catherine O'Neill, Laurent Kreplak, Frederick A Rueggeberg, Daniel Labrie, Carlos Alberto Kenji Shimokawa, Richard Bengt Price
OBJECTIVES: To determine the effects of tooth brushing on five bulk-fill resin based composites (RBCs). METHOD: Ten samples of Filtek Supreme Enamel (control), Filtek One Bulk Fill, Tetric EvoCeram Bulk Fill, SonicFill 2, SDR flow+, and Admira Fusion X-tra were light cured for 20 seconds using the Valo Grand curing light. After 24 hours storage in air at 37°C, specimens were brushed in a random order using Colgate OpticWhite dentifrice and a soft toothbrush. Surface gloss was measured prior to brushing, after 5,000, 10,000 and 15,000 back and forth brushing cycles...
December 5, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29192625/the-force-required-to-fracture-endodontically-roots-restored-with-various-materials-as-intra-orifice-barriers
#11
E Yasa, H Arslan, B Yasa, M Akcay, M Alsancak, H Hatirli
OBJECTIVE: To evaluate the effect of various materials as intra-orifice barriers on the force required fracture roots. MATERIALS AND METHODS: One hundred-thirty five mandibular premolars were decoronated and prepared up to size #40. The root canals were filled and randomly divided into two control and seven experimental groups (n = 15), as follows: Positive control group (the intra-orifice barrier cavity was not prepared), negative control group (the intra-orifice barrier cavity was prepared, but not filled), filling using glass ionomer cement, nano-hybrid composite resin, short fiber-reinforced composite, bulk-fill flowable composite, MTA Angelus, Micro Mega MTA or Biodentine...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29178766/light-energy-transmission-and-vickers-hardness-ratio-of-bulk-fill-resin-based-composites-at-different-thicknesses-cured-by-a-dual-wave-or-a-single-wave-light-curing-unit
#12
Ario Santini, Reem Khalil Naaman, Mohammed Saeed Aldossary
PURPOSE: To quantify light energy transmission through two bulk-fill resin-based composites and to measure the top to bottom surface Vickers hardness ratio (VHratio) of samples of various incremental thicknesses, using either a single-wave or dual-wave light curing unit (LCU). METHODS: Tetric EvoCeram Bulk Fill (TECBF) and SonicFill (SF) were studied. Using MARC-RC, the irradiance delivered to the top surface of the samples 2, 3, 4 and 5 mm thick (n= 5 for each thickness) was adjusted to 800 mW/cm2 for 20 seconds (16 J/cm2) using either a single-wave, Bluephase or a dual-wave, Bluephase G2 LCUs...
April 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178756/porosity-of-flowable-resin-composites-is-not-influenced-by-applicator-tip-diameter
#13
Rémy Balthazard, Stéphanie Jager, Olivier Ferry, Abdessellam Dahoun, Eric Mortier
PURPOSE: To assess the influence of applicator tip diameter on the inclusion of porosities in three different flowable resin composites. METHODS: The initial porosity of three syringes [Filtek Supreme XTE Flowable (XTE), Grandio Flow (GRF), Gradia Direct Flo (GDF)] was determined by 3D tomography. 25 samples per syringe, i.e. 75 samples in total, were prepared using five applicator tips of different diameters (n= 5). The porosity of the 75 samples was assessed by 3D tomography...
June 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178721/the-new-generation-of-conventional-and-bulk-fill-composites-do-not-reduce-the-shrinkage-stress-in-endodontically-treated-molars
#14
Laís Rani Sales Oliveira Schliebe, Stella Sueli Lourenço Braga, Renata Afonso da Silva Pereira, Aline Arêdes Bicalho, Crisnicaw Veríssimo, Veridiana Resende Novais, Antheunis Versluis, Carlos José Soares
PURPOSE: To compare flowable and regular paste bulk-fill resin composites with old and new generation conventional composites that use incremental filling techniques for direct restoration of endodontically-treated teeth. METHODS: Four resin composites produced by the same company (3M-ESPE) were used: two conventional resin composites (old formulation, Z100, and new nanofilled formulation, Filtek Supreme XT); and two bulk-fill resin composites (flowable composite, Filtek Bulk-fill Flowable associated with Filtek Supreme, and regular paste, Filtek Bulk-fill Posterior)...
December 2016: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178709/determination-of-polymerization-shrinkage-of-different-composites-using-a-photoelastic-method
#15
Inga Rullman, Michael Patyna, Bram Janssen, Brita Willershausen
PURPOSE: To investigate the polymerization shrinkage stress of different low viscous bulk composites (SDR, Venus Bulk Fill, X-tra Base, Filtek Bulk Fill) in comparison to a conventional flowable composite (Filtek Supreme XTE Flow) and to high viscous bulk and conventional composites (Filtek Supreme XTE, GrandioSO, Tetric EvoCeram, Tetric EvoCeram BulkFill, Venus Diamond, Venus Pearl), as well as to an experimental composite (Ormocer) and a sonic-activated bulk fill composite (Sonicfill), by means of photoelastic investigation...
February 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178706/stress-distribution-of-bulk-fill-resin-composite-in-class-ii-restorations
#16
Pietro Ausiello, Stefano Ciaramella, Franklin Garcia-Godoy, Massimo Martorelli, Roberto Sorrentino, Antonio Gloria
PURPOSE: To study the influence of the resin bonding layer thickness and the bulk filling material stiffness in adhesive class II mesio-occlusal-distal (MOD) restorations using numerical finite element analysis (FEA). METHODS: Four 3D-FE models of teeth restored with different filling material stiffness and resin bonding layer thickness were built-up and analyzed. The 3D model of a sound lower molar was also analyzed and compared with restored ones. The tooth tissues (enamel, dentin), dental restoration and bolus on the occlusal surface, was divided into 3D solid CTETRA elements with four grid points...
August 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29176302/influence-of-increment-thickness-on-radiant-energy-and-microhardness-of-bulkfill-resin-composites
#17
Gamze Karacolak, L Sebnem Turkun, Hayal Boyacioglu, Jack L Ferracane
Determining the energy transferred at the bottom of eleven bulk-fill resin composites, comparing top and bottom microhardness's and evaluating the correlation between microhardness and radiant energy were aimed. Samples were placed over the bottom sensor of a visible light transmission spectrophotometer and polymerized for 20 s. The bottom and top Knoop microhardness were measured. Paired t-test and correlation analysis were used for statistics (p≤0.05). In all groups, the bottom radiant energy decreased significantly with increasing thickness...
November 23, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29171163/surface-changes-of-various-bulk-fill-resin-based-composites-after-exposure-to-different-food-simulating-liquid-and-beverages
#18
Saijai Tanthanuch, Boonlert Kukiattrakoon, Kasidit Eiam-O-Pas, Kan Pokawattana, Nicha Pamanee, Wichachon Thongkamkaew, Asok Kochatung
OBJECTIVE: To evaluate surface roughness, hardness, and morphology changes of various bulk-fill resin composites eroded by different food-simulating liquids and beverages. MATERIALS AND METHODS: One hundred and thirteen specimens were fabricated in polytetrafluoroethylene cylindrical mold (10 mm in diameter and 4 mm in thickness). Before immersion, baseline data of roughness, Vicker's microhardness were recorded and surface characteristics were examined using scanning electron microscopy (SEM)...
November 24, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29164121/a-pragmatic-study-shows-failure-of-dental-composite-fillings-is-genetically-determined-a-contribution-to-the-discussion-on-dental-amalgams
#19
Alexandre R Vieira, Marília B Silva, Kesia K A Souza, Arnôldo V A Filho, Aronita Rosenblatt, Adriana Modesto
Composite resins for posterior tooth restorations have become a viable alternative to dental amalgam. Failures sometimes cannot be easily explained, and we hypothesize that a genetic component may influence longevity of restorations. We aimed to determine if there is any evidence for a difference in the performance of amalgams versus composite resin in extensive posterior restorations. We also aimed to determine if risk factors such as age, sex, smoking tobacco, alcohol drinking, diabetes status, and periodontal health status may have a role in the failures of extensive anterior composite restorations...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29153732/reinforcement-of-simulated-immature-permanent-teeth-after-mineral-trioxide-aggregate-apexification
#20
Pairoj Linsuwanont, Sirinya Kulvitit, Busayarat Santiwong
OBJECTIVES: The objectives of this study were to compare the fracture resistance of simulated human immature teeth that have undergone mineral trioxide aggregate (MTA) apexification and have been root-filled with fiber post, composite resin, MTA, or gutta-percha. METHODS: Fifty-six human permanent maxillary incisors were selected. Ten teeth received no treatment (intact teeth group). The root canals of 46 teeth were prepared to an internal diameter of 1.75 mm. Six teeth were used as simulated immature teeth group...
November 15, 2017: Journal of Endodontics
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