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composite, microleakage

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https://www.readbyqxmd.com/read/29964249/evaluation-of-marginal-leakage-after-mechanical-fatigue-cycling-of-composite-inlays-luted-with-different-cements
#1
Dario Melilli, Enzo Maria Cumbo, Paolo Baldissara, Vinicius Felipe Wandscher, Luiz Felipe Valandro, Giuseppe Gallina, Giuseppe Pizzo
This in vitro study evaluated the marginal microleakage of composite inlays luted with 3 different cement systems. The null hypothesis was that the luting materials would not influence dye penetration, showing the same degree of microleakage. Thirty-six sound molars were selected, mesio-occlusodistal cavities were prepared, and the teeth were randomly divided into 3 groups (n = 12). Composite resin inlay restorations were made and cemented using a dual-curing resin cement (Calibra), a light-curing flowable composite (Charisma Flow), or a self-adhesive resin cement (RelyX Unicem)...
July 2018: General Dentistry
https://www.readbyqxmd.com/read/29925731/effects-of-different-resin-adhesives-on-the-microleakage-in-a-new-model-with-simulated-subgingival-condition-and-pulpal-pressure
#2
Zhongjun Liu, Xinyuan Zhao, Xiongqun Zeng, Shuaimei Xu, Yu Lu, Dingming Huang
Resin adhesive restorations are susceptible to oral fluid contamination and greatly influenced by dentinal tubule fluid because of pulpal pressure, especially when the restorative cavities are near gingival tissues. This study designed a novel model to evaluate the microleakage of self-adhesive flowable composite and traditional resin adhesives under simulated subgingival cavity preparations and pulpal pressure. We applied three different adhesive systems, include Vertise Flow, Optibond all-in-one, and Optibond S, on premolars with V-shaped cavity...
June 20, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/29922341/comparison-of-composite-resin-and-porcelain-inlays-for-restoration-of-noncarious-cervical-lesions-an-in-vitro-study
#3
Hui Theng Chee, Wan Zaripah Wan Bakar, Zuryati Ab Ghani, Bennett T Amaechi
Background: Composite resin (CR) currently is one of the most commonly used material in restoring noncarious cervical lesions (NCCL) due to its strength and esthetics color but has microleakage problem. The aim of this study is to compare in vitro the microleakage depth between CR and porcelain in restoring NCCL. Materials and Methods: This an in vitro study was done by preparing cavities on the buccocervical surface of 62 extracted premolar teeth which randomly assigned to two groups ( n = 31) where Group 1 was restored with nanocomposite and Group 2 was cemented with porcelain cervical inlays...
May 2018: Dental Research Journal
https://www.readbyqxmd.com/read/29906619/effect-of-antimicrobial-photodynamic-therapy-on-microleakage-of-class-v-cavities-restored-with-composite-resin
#4
Ladan Madani, Edwin Sarkisians, Nazanin Kiomarsi, Mohammad Javad Kharazi Fard, Nasim Chiniforush
OBJECTIVES: Disinfection of enamel and dentin following cavity preparation is a necessity. Considering the possible effect of antimicrobial agents on tooth structure and dental adhesives, this study aimed to assess the microleakage of composite restorations following disinfection of cavity walls with antimicrobial photodynamic therapy (aPDT). MATERIALS AND METHODS: Standard class V cavities were prepared in the buccal surfaces of 68 extracted human premolars. The teeth were then randomly divided into four groups (n = 17) for use of different adhesive systems (Adper Single Bond 2 or One-Step Plus) and disinfection with aPDT...
June 12, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29899641/effect-of-local-anesthesia-containing-vasoconstrictor-on-sealing-ability-of-dentin-with-two-adhesive-systems-dye-leakage-and-scanning-electron-microscopy-study
#5
Rakesh Singla, Sanjay Tewari, Jigyasa Duhan, Sudhir Kumar, Gurdeep Singh Gill, Namita Jain
Objectives: To evaluate the effect of 2% lignocaine containing 1:80,000 adrenaline on the microleakage and ultrastructure of resin tooth interface using an acetone based total etch adhesive (Prime and Bond NT) and an ethanol water based self etch adhesive system (Xeno III). Materials and method: Class V cavities were prepared on buccal surfaces of 72 maxillary first premolars scheduled for orthodontic extraction. In 36 premolars procedure was performed under local anaesthesia (LA) and in other 36 teeth without LA...
May 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29881311/assessment-of-microleakage-of-class-v-restored-by-resin-composite-and-resin-modified-glass-ionomer-and-pit-and-fissure-resin-based-sealants-following-er-yag-laser-conditioning-and-acid-etching-in-vitro-study
#6
Emilie Luong, Amir Shayegan
Aim: The aim of this study was to make a comparison between microleakage of conventionally restored class V cavities using acid etchant and the ones conditioned by erbium-doped yttrium aluminum garnet (Er:YAG) laser, and also to assess and compare the effectiveness of enamel surface treatments of occlusal pits and fissures by acid etching and conditioned by Er:YAG laser-etch. Materials and methods: Seventy-two extracted third molars were used in this study. The samples were divided into two major groups: class V cavities and pit and fissure sealants...
2018: Clinical, Cosmetic and Investigational Dentistry
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
#7
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/29813001/optical-evaluation-of-enamel-microleakage-with-one-step-self-etch-adhesives
#8
Alaa Turkistani, Maha Almutairi, Nouf Banakhar, Reem Rubehan, Sulafa Mugharbil, Ahmed Jamleh, Adnan Nasir, Turki Bakhsh
OBJECTIVE: In this in vitro study, cross-polarization optical coherence tomography (CP-OCT) was used to evaluate microleakage in dental composite restorations bonded to enamel with two types of one-step self-etching (SE) adhesives. BACKGROUND DATA: One-step SE adhesives were proposed to simplify bonding of composite restorations. However, bonding of these simplified adhesive to dental enamel is still questionable. OCT is a promising diagnostic tool that allows micron-scale imaging of biological tissues and structures...
May 29, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29721224/porosity-analysis-of-mta-and-biodentine-cements-for-use-in-endodontics-by-using-micro-computed-tomography
#9
Fabricio Guerrero, Esther Berástegui
Background: The purpose of this study is to compare the porosity of two repair cements, White ProRoot® MTA and Biodentine®. These samples were analyzed by using micro-computed microtomography. Material and Methods: Sixteen samples were used in the study that were divided according to the composition of the materials used. White ProRoot® MTA (n = 8) and Biodentine® (n = 8) were the samples prepared according to the manufacturer's instructions. They were placed in silicone molds of 5 ± 0...
March 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29714702/effect-of-fiber-inserts-on-gingival-margin-microleakage-of-class-ii-bulk-fill-composite-resin-restorations
#10
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/29714697/evaluation-of-the-marginal-integrity-of-a-bioactive-restorative-material
#11
Barry M Owens, Jeffrey G Phebus, William W Johnson
This in vitro study evaluated the marginal microleakage of a bioactive restorative with other restorative materials in standard Class V preparations. Sixty previously extracted, noncarious human molars were randomly assigned to 3 experimental groups (n = 20): a bioactive composite resin, a universal hybrid composite resin, and a resin-modified glass ionomer restorative. Class V cavities were prepared on the facial or lingual surface of each tooth so that coronal margins were located in enamel and apical margins in cementum (dentin)...
May 2018: General Dentistry
https://www.readbyqxmd.com/read/29691662/microleakage-of-composite-crowns-luted-on-cad-cam-milled-human-molars-a-new-method-for-standardized-in-vitro-tests
#12
Maximiliane Amelie Schlenz, Alexander Schmidt, Peter Rehmann, Thomas Niem, Bernd Wöstmann
OBJECTIVES: To investigate debonding of full crowns made of CAD/CAM composites, CAD/CAM technology was applied to manufacture standardized test abutments to increase the reproducibility of human teeth used in in vitro studies. MATERIALS AND METHODS: A virtual test abutment and the corresponding virtual crown were designed and two STL data sets were generated. Sixty-four human third molars and CAD/CAM blocks were milled using a CNC machine. Crowns of four different composite blocks (Lava Ultimate (LU), Brilliant Crios (BC), Cerasmart (CS), Experimental (EX)) were adhesively bonded with their corresponding luting system (LU: Scotchbond Universal/RelyX Ultimate; BC: One Coat 7 Universal/DuoCem; CS: G-PremioBond/G-Cem LinkForce; EX: Experimental-Bond/Experimental-Luting-Cement)...
April 24, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29683407/effect-of-er-cr-ysgg-laser-and-ascorbic-acid-on-the-bond-strength-and-microleakage-of-bleached-enamel-surface
#13
Fahad Alkhudhairy, Abdulaziz AlKheraif, Mohammed Bin-Shuwaish, Sulieman Al-Johany, Mustafa Naseem, Fahim Vohra
BACKGROUND: The available evidence of Er,Cr:YSGG lasers on bleached enamel is limited and controversial. It is assumed that Er,Cr:YSGG laser will be effective in reversing the effect of bleaching on adhesive bond integrity of enamel to resin composite. OBJECTIVE: The study aimed to evaluate the efficacy of Er,Cr:YSGG laser on bond strength and microleakage of bleached enamel. MATERIALS AND METHODS: From the 80 samples, 60 samples were bleached (40% hydrogen peroxide) and divided into three subgroups...
April 23, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29670735/microleakage-of-porcelain-laminate-veneers-cemented-with-different-bonding-techniques
#14
Satheesh B Haralur
Background: Porcelain laminate veneers (PLV) are continued to be popular in modern dental practice due to its high aesthetic outcome and conservative tooth preparation. The composite resins are commonly used as luting agents for cementation of PLV. Polymerisation shrinkage induced marginal gap and interfacial leakage is the persistent limitation with the resin luting cements. The objective of the study was to assess the effect of various dentin bonding techniques on the microleakage after accelerated ageing in porcelain laminate veneres...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29644480/correction-to-microleakage-in-class-v-composite-and-compomer-restorations-following-exposure-to-a-colutory-prescribed-for-the-treatment-of-xerostomy
#15
Ascensión Vicente, Antonio J Ortiz, Pablo L Parra, José L Calvo-Guirado, Fernando Chiva
In the original publication of the article, one of the author names was published incorrectly as José L. Calvo. The correct name is José L. Calvo-Guirado.
April 11, 2018: Odontology
https://www.readbyqxmd.com/read/29627738/polymerization-shrinkage-stress-of-resin-based-dental-materials-a-systematic-review-and-meta-analyses-of-composition-strategies
#16
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/29603692/effect-of-at-home-and-in-office-bleaching-on-marginal-microleakage-in-composite-resin-restorations-using-two-adhesive-systems
#17
Celso A Klein, Douglas da Silva, Eduardo G Reston, Diana Lb Borghetti, Roberto Zimmer
AIM: The aim of this study is to assess marginal microleakage of cervical cavities restored with composite resins and two different adhesive techniques subjected to at-home and in-office bleaching. MATERIALS AND METHODS: In this randomized, blind laboratory experiment, 60 bovine teeth recently extracted were collected and divided into six groups (n = 10 each group). The teeth received cervical cavity preparations (2 mm × 3 mm × 1 mm) with enamel margins. Two different adhesive systems were used (Single Bond 2 and Clearfil SE Bond), in addition to composite resin (Z250)...
March 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29570027/high-bond-durability-of-universal-adhesives-on-glass-ceramics-facilitated-by-silane-pretreatment
#18
C Yao, H Yang, J Yu, L Zhang, Y Zhu, C Huang
OBJECTIVE: This study aimed to investigate the long-term effectiveness of ceramic-resin bonding with universal adhesives in non-silane-pretreated and silane-pretreated modes after 10,000 cycles of thermal aging. METHODS AND MATERIALS: All Bond Universal, Adhese Universal, Clearfil Universal Bond, and Single Bond Universal were selected. Etched lithium disilicate glass ceramics were prepared, randomly assigned to groups, and pretreated with or without ceramic primer containing silane coupling agent prior to the application of universal adhesive (ie, silane-pretreated or non-silane-pretreated mode)...
March 23, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29513233/effect-of-composite-warming-on-shear-bond-strength
#19
Thomas F McDaniel, Thomas W Sigrist, Gary M Johnson
Several manufacturers produce devices designed to warm composite resins used in restorative dentistry. Previous investigators have examined the effects of heating composite restorative resins prior to placement and polymerization. Heating has been reported to reduce viscosity, improve ease of placement, enhance monomer conversion, and reduce microleakage. The aim of the present study was to compare shear bond strengths of room temperature (22°C) and prewarmed (54°C) restorative composite resin. Extracted bovine mandibular incisors were sectioned sagittally and embedded in acrylic cylinders...
March 2018: General Dentistry
https://www.readbyqxmd.com/read/29496621/esterase-from-a-cariogenic-bacterium-hydrolyzes-dental-resins
#20
Bo Huang, Walter L Siqueira, Dennis G Cvitkovitch, Yoav Finer
OBJECTIVES: To identify and characterize specific esterases from S. mutans with degradative activity toward methacrylate-based resin monomers. METHODS: Out of several putative esterases, an esterase encoded in an Open Reading Frame as SMU_118c (The National Center for Biotechnology Information, NCBI), was found to have true hydrolase activities. SMU_118c was cloned, expressed, purified and further characterized for its respective hydrolytic activity towards ester-containing nitrophenyl substrates and the universal resin monomers bis-phenyl-glycidyl-dimethacrylate (bisGMA) and triethyleneglycol dimethacrylate (TEGDMA) at neutral (7...
April 15, 2018: Acta Biomaterialia
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