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composite, microleakage

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https://www.readbyqxmd.com/read/28070263/evaluating-the-microshear-bond-strength-and-microleakage-of-flowable-composites-containing-zinc-oxide-nano-particles
#1
Koorosh Teymoornezhad, Homayoun Alaghehmand, Ghazaleh Daryakenari, Soraya Khafri, Mitra Tabari
INTRODUCTION: Preventive resin restorations (PRR) are the conservative choice for the most common carious lesions in children. Thus, new age flowable resin composites with higher filler content are readily used. The aim of this study was to evaluate the microshear bond strength and microleakage of two flowable resin composites containing different percentages of nano zinc oxide (NZnO) particles, which have proven to have antimicrobial properties. METHODS: This experimental in-vitro study was carried out in the Dental Material Research Center of Babol University of Medical Sciences in 2015...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28052208/microleakage-evaluation-of-composite-restorations-following-papain-based-chemo-mechanical-caries-removal-in-primary-teeth
#2
Marwa Abdel Hafez, Mona Elkateb, Sonia El Shabrawy, Amel Mahmoud, Omar El Meligy
AIM: To evaluate the microleakage of composite restorations following Papain-based chemo-mechanical caries removal compared to the conventional drilling method. The characteristic of the hybrid layer was also studied using scanning electron microscopy. STUDY DESIGN: The sample included thirty freshly extracted and exfoliated primary molars with open proximal carious dentin lesions. Teeth were divided into two equal groups, according to method of caries removal. Following caries removal, cavity preparations were restored with composite resin...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/27987692/bioactive-materials-improve-some-physical-properties-of-a-mta-like-cement
#3
A Flores-Ledesma, F Barceló Santana, L Bucio, J A Arenas-Alatorre, M Faraji, A M Wintergerst
One of the main disadvantages of MTA is its long setting time which could result in higher solubility and microleakage, producing a failed treatment. Studies have shown that the addition of bioactive glass may decrease the setting time. The aim of this study is to evaluate the compressive strength, setting time, solubility and radiopacity of a MTAlike experimental cement to which different percentage of wollastonite and bioactive glass are added. White MTA Angelus® was used as control; an experimental MTA-like cement (ExpC) was prepared using white Portland cement with 20wt% of Bi2O3; three wollastonite cement composites were prepared adding 10, 20 and 30wt% of wollastonite to ExpC, and three more adding the same proportions of bioactive glass...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27965486/comparison-of-shear-bond-strength-and-microleakage-of-various-bulk-fill-bioactive-dentin-substitutes-an-in-vitro-study
#4
Fahad I Alkhudhairy, Zeeshan H Ahmad
INTRODUCTION: Various bulk-fill materials depending on their composition, viscosity, and flow ability have different physical and mechanical properties. The aim of this in vitro study was to determine and compare the shear bond strength and microleakage properties of activa restorative with other bulk-fill restorative materials surefil (SDR), Biodentine, ever X posterior. MATERIALS AND METHODS: Forty permanent premolars were selected for shear bond strength, and 20 permanent premolars were selected with class II cavities on mesial and distal side for microleakage...
December 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27829753/a-comparative-evaluation-of-microleakage-of-restorations-using-silorane-based-dental-composite-and-methacrylate-based-dental-composites-in-class-ii-cavities-an-in-vitro-study
#5
Jambai Sampath Kumar Sivakumar, A S Prasad, Saravanapriyan Soundappan, N Ragavendran, R Ajay, Krishnamoorthy Santham
AIM: The aim of this in vitro study was to evaluate and compare the microleakage of restorations using low shrinkage silorane-based dental composite and methacrylate-based dental composites in Class II cavity at the occlusal and gingival margins. MATERIALS AND METHODS: Sixty mandibular molars were collected and divided into three experimental groups and one negative control group. Class II slot cavity was prepared on the mesial surface. Experimental groups were restored with Group I: silorane-based microhybrid composite, Group II: methacrylate-based nanohybrid composite, and Group III: Methacrylate-based microhybrid composite, respectively...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27802122/shear-bond-strength-and-tooth-composite-interaction-with-self-adhering-flowable-composites
#6
C Brueckner, H Schneider, R Haak
PURPOSE: To evaluate the tooth-composite interaction (A) and shear bond strength (SBS; B) of self-adhering flowables. METHODS AND MATERIALS: (A) Thirty-two human molars with one Class V cavity were restored with Vertise Flow (VF), Fusio Liquid Dentin (FLD), an experimental self-adhering flowable (EF), or Adper Prompt-L-Pop/Filtek Supreme XT Flowable (PLP). Teeth were prepared according to laboratory standard and stored in water (24 hours, 37°C). Microleakage (ML; percentage interface length at enamel [E]/dentin [D]) and tooth-composite interaction were investigated...
January 2017: Operative Dentistry
https://www.readbyqxmd.com/read/27759413/comparative-evaluation-of-microleakage-of-a-carbomer-fluoroapatite-enhanced-glass-ionomer-cement-on-primary-teeth-restorations
#7
COMPARATIVE STUDY
K Tolidis, C Boutsiouki, P Gerasimou
AIM: Carbomer cement represents a novel glass-ionomer which gradually mineralises into fluoroapatite. Purpose of this study was to evaluate microleakage around restorations in deciduous teeth made with composite resin, conventional glass-ionomer cement, resin-modified glass-ionomer cement and carbomer/fluoroapatite-enhanced glass-ionomer cement. MATERIALS AND METHODS: A group of 40 primary upper canines, primary upper and lower molars was divided into 4 groups (n=10)...
September 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27733876/effect-of-finishing-time-on-microleakage-at-the-composite-repair-interface
#8
Fereshteh Shafiei, Nazanin Berahman, Elmira Niazi
BACKGROUND: Repair is a conservative treatment of defective composite restoration. Sealing the repair interface is a critical factor to achieve successful repaired restorations. OBJECTIVE: The aim of this study was to evaluatethe effect of three finishing times on the microleakage at the composite-repair interface. METHOD: Eighty composite specimens (Z250) were made and aged for eight weeks in water. They were randomly divided into four groups...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27689837/microleakage-of-lithium-disilicate-crown-margins-finished-on-direct-restorative-materials
#9
M Metz, M Durski, J Chou, G Crim, B Harris, W-S Lin
OBJECTIVE: For some esthetic clinical situations, it is necessary to finish crown margins on direct restorative materials to preserve tissue integrity, bonding integrity, and biological width. The purpose of this research was to investigate microleakage at the interface between bonded lithium disilicate crowns and various direct restorative materials in a class III and class V position. METHODS AND MATERIALS: Class III or class V restorations were prepared on one side of extracted incisors with either Tetric EvoCeram, Tetric Evoceram Bulk, Fuji II LC, or Tetric Evoflow...
September 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27686259/local-deformation-fields-and-marginal-integrity-of-sculptable-bulk-fill-low-shrinkage-and-conventional-composites
#10
Vesna Miletic, Dejan Peric, Milos Milosevic, Dragica Manojlovic, Nenad Mitrovic
OBJECTIVE: To compare strain and displacement of sculptable bulk-fill, low-shrinkage and conventional composites as well as dye penetration along the dentin-restoration interface. METHODS: Modified Class II cavities (N=5/group) were filled with sculptable bulk-fill (Filtek Bulk Fill Posterior, 3M ESPE; Tetric EvoCeram Bulk Fill, Ivoclar Vivadent; fiber-reinforced EverX Posterior, GC; giomer Beautifil Bulk, Schofu), low-shrinkage (Kalore, GC), nanohybrid (Tetric EvoCeram, Ivoclar Vivadent) or microhybrid (Filtek Z250, 3M ESPE) composites...
September 26, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27681395/a-comparative-microleakage-evaluation-of-three-different-base-materials-in-class-i-cavity-in-deciduous-molars-in-sandwich-technique-using-dye-penetration-and-dentin-surface-interface-by-scanning-electron-microscope
#11
Babita Niranjan, Nandihalli Devendrappa Shashikiran, Shilpy Singla, Ruchi Thakur, Aashutosh Dubey, Satish Maran
INTRODUCTION: A major objective in restorative dentistry is the control of marginal leakage, which may occur because of dimensional changes or lack of adaptation of restorative material to the cavity preparation. Numerous techniques have been advocated to overcome polymerization shrinkage in composite restorations. AIM AND OBJECTIVES: This study investigated microleakage of three different bases under composite resin in sandwich technique using dye penetration and dentin surface interface using scanning electron microscope (SEM)...
October 2016: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/27671469/shrinkage-behaviors-of-dental-composite-restorations-the-experimental-numerical-hybrid-analysis
#12
Shu-Fen Chuang, Pin-Sheng Huang, Terry Yuan-Fang Chen, Lo-Hao Huang, Ko-Chih Su, Chi-Han Chang
OBJECTIVES: To investigate the effects of light curing protocols on the shrinkage behaviors, contraction stress, and microleakage in composite restorations by an experimental-numerical hybrid analysis. METHODS: Three groups of human molars were collected to receive different light-curing protocols: vertical or oblique curing at regular intensity, and vertical curing at reduced intensity. For each tooth, the composite fillings were consecutively placed under unbonded and bonded states, and their shrinkage behaviors were examined with a digital image correlation (DIC) technique...
December 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27671178/an-in-vitroevaluation-of-microleakage-at-the-cervical-margin-between-two-different-class-ii-restorative-techniques-using-dye-penetration-method
#13
Noor-Ul-Ain Jawaed, Syed Yawar Ali Abidi, Fazal-Ur-Rehman Qazi, Shahbaz Ahmed
OBJECTIVE: To evaluate the coronal microleakage of packable composite using conventional incremental and posterior bulk fill flowable composite using Smart Dentine Replacement Single Step technique in the cervical margins of class II cavities in dentine using the dye penetration method. STUDY DESIGN: In-vitroInterventional study. PLACE AND DURATION OF STUDY: Department of Operative Dentistry, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences (DIKIOHS), Karachi, from November 2012 to April 2013...
September 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27617974/effect-of-antioxidant-on-coronal-seal-of-dentin-following-sodium-hypochlorite-and-hydrogen-peroxide-irrigation
#14
S Gupta, A Paliwal, S Patel, M Bhati, Fyi Asiri, A H Shah
Aim: Comparative analysis of the coronal microleakage of a self-etching priming dentin adhesive with the use of antioxidant (Sodium Ascorbate (SA) and herbal quercetin) after Sodium hypochloride (NaOCl) and hydrogen-peroxide (H 2O2) irrigation. Materials and Methods: Seventy single root canals were enlarged and seven different treatment protocols were applied throughout the root canal treatment. The groups 1, 2 and 3 were irrigated with NaOCl. Group 1 was used as the negative control with only NaOCl irrigation whereas in group 2, Sodium ascorbate was applied as an additional irrigation agent following NaOCl...
October 15, 2015: West Indian Medical Journal
https://www.readbyqxmd.com/read/27612323/microleakage-around-class-v-composite-restorations-after-ultrasonic-scaling-and-sonic-toothbrushing-around-their-margin
#15
Ronald E Goldstein, Suruchi Lamba, Nathaniel C Lawson, Preston Beck, Robert A Oster, John O Burgess
OBJECTIVES: To measure microleakage around class V composite restorations after piezoelectric ultrasonic scaling and sonic toothbrushing. METHODS: 3 mm × 2 mm × 1.5 mm boxes were prepared on buccal and lingual surfaces of extracted molars centered on the cementum-enamel junction. Half the preparations were beveled (0.5 mm). Preparations were restored with composite and polished. Restorations on one side of the teeth were either traced with an ultrasonic scaler (60 seconds, n = 16) or brushed in a sonic toothbrushing machine (2 hours, n = 16)...
September 9, 2016: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/27507991/effect-of-a-desensitizing-varnish-on-microleakage-of-two-self-etch-adhesives
#16
Anna Saffarpour, Aida Saffarpour, Mohammad Javad Kharazifard, Niloofar Golmohamadi
OBJECTIVES: The aim of this in-vitro experimental study was to assess the effect of application of a desensitizing varnish on the enamel and dentin marginal seal. MATERIALS AND METHODS: Seventy-two freshly extracted, intact human premolar teeth were divided into four groups (n=18). Class V cavities (3mm in length, 2mm in width and 2mm in depth) were prepared on the buccal surface of each tooth. The following sealing materials were applied in the four groups: One-step Clearfil S3 Bond (S3) self-etch adhesive, two-step Clearfil SE Bond (SE) self-etch adhesive, S3 Bond+ VivaSens desensitizing varnish (VS+S3) and Clearfil SE Bond + VivaSens (VS+SE)...
November 2015: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27504407/effects-of-preheated-composite-on-micro-leakage-an-in-vitro-study
#17
Joshua Ng Chor Yang, James David Raj, Herald Sherlin
INTRODUCTION: Resin composites have been the pinnacle of direct esthetic restorations ever since its discovery. However, it comes with its own disadvantages. Post-operative sensitivity and marginal discoloration frequently occur due to polymerization shrinkage and micro leakage, which is the major cause of failure in resin composite restorations. AIM: To evaluate the effects of preheated composite at different temperatures on microleakage. MATERIALS AND METHODS: A total of 60 extracted non-carious human premolars were collected and class 1 cavity (1...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27472905/comparison-of-total-etch-self-etch-and-selective-etching-techniques-on-class-v-composite-restorations-prepared-by-er-yag-laser-and-bur-a-scanning-electron-microscopy-study
#18
Emre Ozel, Elif Bahar Tuna, Sonmez Firatli, Erhan Firatli
The purpose of this study was to compare total-etch, self-etch, and selective etching techniques on the marginal microleakage of Class V composite restorations prepared by Er:YAG laser and bur. Class V cavities prepared on both buccal and lingual surfaces of 30 premolars by Er:YAG laser or bur and divided into six groups. The occlusal margins were in enamel, and the cervical margins were in cementum. Group-1: bur preparation(bp)+Adper Single Bond 2 (ASB)+Filtek Z550 (FZ); Group-2: laser preparation(lp)+(ASB)+(FZ); Group-3: bp + Clearfil S3 Bond Plus (CSBP)+(FZ); Group-4: lp+(CSBP) (FZ); Group-5: bp + acid etching+(CSBP)+(FZ); Group-6: lp + acid etching+(CSBP)+(FZ)...
October 2016: Microscopy Research and Technique
https://www.readbyqxmd.com/read/27460319/porosity-of-maxillofacial-silicone-elastomers-and-microleakage-pattern-of-the-commercially-pure-ti-silicone-elastomer-interface-after-hydrothermal-cycling
#19
Ioli Ioanna Artopoulou, Mark S Chambers, George Eliades
STATEMENT OF PROBLEM: Delamination of the maxillofacial silicone elastomer away from the commercially pure titanium (cpTi)-encapsulated magnets affects the long-term performance of the facial restoration. PURPOSE: The purposes of this in vitro study were to investigate the interfacial microleakage patterns of 2 maxillofacial silicone elastomers with cpTi when 3 different primers were used and to evaluate the porosity of the 2 elastomers tested. MATERIAL AND METHODS: To test the interfacial microleakage patterns of the 2 elastomers MDX4-4210 (EL1) and A-2006 (EL2) with cpTi when 3 metal primers, A-304 (PR1), A-320 bonding enhancer (PR2), Super-Bond C&B monomer (PR3), and ethyl-cyanoacrylate (Super Glue) were used, the bonded interfaces were observed using reflected light microscopy, and the percentage of the linear extent of leakage along the interface (%microleakage) was measured...
December 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27443897/effect-of-an-extra-layer-of-hydrophobic-resin-on-the-microleakage-of-cl-v-composite-resin-restorations-with-a-universal-adhesive-system
#20
Mahmoud Bahari, Narmin Mohammadi, Parnian Alizadeh Oskoee, Siavash Savadi Oskoee, Farnaz Davoodi
AIM: The aim of the present study was to evaluate the effect of the application of a hydrophobic resin on the microleakage of Cl V composite resin restorations using a universal adhesive system applied in the self-etch (SE) and etch-and-rinse (ER) modes. METHOD: Cl V cavities were prepared on the buccal surfaces of 64 human premolar teeth and divided into four groups (n = 16): ER, ER with hydrophobic resin (ERH), SE, and SE with hydrophobic resin (SEH). Microleakage at occlusal and gingival margins was evaluated using 0...
July 21, 2016: Journal of Investigative and Clinical Dentistry
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