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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/28052214/effect-of-silver-nanoparticle-added-pit-and-fissure-sealant-in-the-prevention-of-dental-caries-in-children
#2
Enid Karina Salas-López, Mauricio Pierdant-Pérez, Juan Francisco Hernández-Sierra, Facundo Ruíz, Peter Mandeville, Amaury J Pozos-Guillén
OBJECTIVE: The objective of this study was to evaluate the effects of pit and fissure sealant mixed with silver nanoparticles on dental caries, by means of monthly measurement of fluorescence with DIAGNOdent over six months. STUDY DESIGN: This study was divided in two phases: experimental and clinical. In the experimental phase, the adhesion and microleakage of the pit and fissure sealant experiment were evaluated. Two groups of 10 teeth, without serious carious lesions, were included...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28052208/microleakage-evaluation-of-composite-restorations-following-papain-based-chemo-mechanical-caries-removal-in-primary-teeth
#3
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/28032041/in-vitro-and-ex-vivo-microbial-leakage-assessment-in-endodontics-a-literature-review
#4
REVIEW
Sohrab Tour Savadkouhi, Hengameh Bakhtiar, Safoura Emami Ardestani
The aim of this study was to perform a literature review of published in-vitro and ex-vivo studies, which evaluated microbial leakage in endodontics in the past 10 years. A comprehensive electronic literature search was carried out in PubMed database for English articles published from 2005 to 2016 using the keywords "endodontics," "in vitro," "ex vivo," "microbial leakage," "microbial penetration," "saliva," "Enterococcus faecalis," "E. faecalis," "endodontic sealers," "temporary filling material," "apical plug," "mineral trioxide aggregate," and "MTA...
November 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/27987692/bioactive-materials-improve-some-physical-properties-of-a-mta-like-cement
#5
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/27974921/post-treatment-periapical-periodontitis-x-ray-versus-cbct-a-case-report
#6
REVIEW
P Perlea, C Nistor, I Suciu
Post treatment periapical periodontitis is usually caused by residual microbes, due to poorly treated root canals and microleakage. Our clinical case proved that orthograde, single-visit endodontic re-treatment is the first choice for the clinician. Cone Beam Computed Tomography (CBCT) images detect the presence and the real extension of the periapical periodontitis and the outcome of the endodontic treatment, in terms of healing the bone defect. Compared with the limited 2-D data obtained by using the radiograph, the CBCT shows a 3-D image of the tooth, the root canal, and the surrounding tissue...
January 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27966204/the-influence-of-pressure-changes-on-the-retentive-force-and-coronal-microleakage-of-different-types-of-posts-in-endodontically-treated-teeth-during-simulated-dives
#7
Gergo Mitov, Florian Draenert, Paul Schumann, Marcus Stötzer, Constantin von See
OBJECTIVES: We assessed the influence of a simulated diving environment on the interfacial microleakage and retentive forces of different post types in root-canal-filled teeth. MATERIALS AND METHODS: One-hundred-and-twenty extracted, single-rooted teeth were endodontically treated and were randomly divided into three groups according to the post and cement used: ER Post/Harvard cement (Titanium), CeraPost/DentinBuild Evo (Zirconia), DT Light Post/Calibra (FRC). Each group was randomly divided into two equal subgroups, a control group, and an experimental group, subjected to simulated dives to 456 kPa in a diving chamber...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27965486/comparison-of-shear-bond-strength-and-microleakage-of-various-bulk-fill-bioactive-dentin-substitutes-an-in-vitro-study
#8
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/27957271/in-vitro-evaluation-of-the-sealing-ability-of-three-newly-developed-root-canal-sealers-a-bacterial-microleakage-study
#9
Farnaz Jafari, Ehsan Sobhani, Hossein Samadi-Kafil, Ahmad Pirzadeh, Sanaz Jafari
BACKGROUND: The purpose of this study was to compare the sealing ability of MTA Fillapex, Apatite Root Canal Sealer and AH26 sealers. MATERIAL AND METHODS: The present in vitro study was carried out on 142 extracted single-rooted human mature teeth. The teeth were randomly divided into three experimental groups (n=44) and two control groups (n=5). Three root canal sealers were MTA Fillapex, Apatite Root Canal Sealer and AH26. The teeth in the control groups were either filled with no sealer or made completely impermeable...
December 2016: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/27942548/effect-of-self-etch-adhesives-on-self-sealing-ability-of-high-copper-amalgams
#10
Saied Mostafa Moazzami, Horieh Moosavi, Maryam Moddaber, Reza Parvizi, Mohamad Hadi Moayed, Nima Mokhber, Michael Meharry, Reza B Kazemi
STATEMENT OF THE PROBLEM: Similar to conventional amalgam, high-copper amalgam alloy may also undergo corrosion, but it takes longer time for the resulting products to reduce microleakage by sealing the micro-gap at the tooth/amalgam interface. PURPOSE: The aim of this study was to evaluate the effect of self-etch adhesives with different pH levels on the interfacial corrosion behavior of high-copper amalgam restoration and its induction potential for self-sealing ability of the micro-gap in the early hours after setting by means of Electro-Chemical Tests (ECTs)...
December 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27843251/sealing-ability-of-nano-ionomer-in-primary-teeth-an-ex-vivo-study
#11
REVIEW
Fawaz Siddiqui, Swati Karkare
INTRODUCTION: Microleakage is an important consideration in primary dentition because the floor of the cavity preparation may be close to the pulp. The added insult to the pulp caused by seepage of irritants around the restoration and through the thin dentin may produce irreversible pulp damage. AIM: The objective of this study was to evaluate and compare the sealing ability of three light cured (LC) resin-modified glass-ionomer cements (RMGICs) in primary anterior teeth...
July 2016: International Journal of Clinical Pediatric Dentistry
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
#12
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/27813625/observations-of-mineralized-tissues-of-teeth-in-x-ray-micro-computed-tomography
#13
Renata Chałas, Karol Szlązak, Ilona Wójcik-Chęcińska, Jakub Jaroszewicz, Rafał Molak, Karol Czechowicz, Sebastian Paris, Wojciech Święszkowski, Krzysztof J Kurzydłowski
BACKGROUND: The one of the most recent imaging technology is X-ray microtomography which allows non-invasive visualization of structures in 3D. It also offers the opportunity to conduct a comprehensive quantitative analysis of the tested objects such as measuring the shares of the various phases, determining the material density and distribution of the size of pores and particles. AIM: The aim of the paper was to present an overview on the applicability and relevance of X-ray microtomography in the study of mineralized tissues of the teeth...
November 4, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27802122/shear-bond-strength-and-tooth-composite-interaction-with-self-adhering-flowable-composites
#14
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/27794149/microleakage-of-glass-ionomer-based-provisional-cement-in-cad-cam-fabricated-interim-crowns-an-in-vitro-study
#15
Ra'fat I Farah, Naji Al-Harethi
AIM: The aim of this study was to compare in vitro the marginal microleakage of glass ionomer-based provisional cement with resin-based provisional cement and zinc oxide non-eugenol (ZONE) provisional cement in computer-aided design and computer-aided manufacturing (CAD/CAM)-fabricated interim restorations. MATERIALS AND METHODS: Fifteen intact human premolars were prepared in a standardized manner for complete coverage of crown restorations. Interim crowns for the prepared teeth were then fabricated using CAD/CAM, and the specimens were randomized into three groups of provisional cementing agents (n = 5 each): Glass ionomer-based provisional cement (GC Fuji TEMP LT™), bisphenol-A-glycidyldimethacrylate (Bis-GMA)/ triethylene glycol dimethacrylate (TEGDMA) resin-based cement (UltraTemp® REZ), and ZONE cement (TempBond NE)...
October 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27790568/comparative-evaluation-of-the-marginal-sealing-ability-of-two-commercially-available-pit-and-fissure-sealants
#16
Lakshmi Priya Sridhar, Joyson Moses, Bollam Nammalwar Rangeeth, Subramanian Sivakumar
INTRODUCTION: The occlusal surfaces of the teeth usually have pits and fissures which provide a good environment for demineralization with minimal salivary access and make them caries prone. The success of pit and fissure sealing materials is highly dependent on the marginal sealing ability of the fissures. AIM: The present study was carried out to evaluate and compare the marginal sealing ability of two commercially available pit and fissure sealants. MATERIALS AND METHODS: A total of 50 human premolar teeth were used in this invitro study...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27790267/apical-sealing-ability-of-mineral-trioxide-aggregate-intermediate-restorative-material-and-calcium-enriched-mixture-cement-a-bacterial-leakage-study
#17
Shahriar Shahriari, Farhad Faramarzi, Mohammad-Yousef Alikhani, Maryam Farhadian, Seyedeh Sareh Hendi
INTRODUCTION: This in vitro study compared the apical sealing ability of three common root end filling materials namely mineral trioxide aggregate (MTA), intermediate restorative material (IRM) and calcium-enriched mixture (CEM) cement using a bacterial leakage model. METHODS AND MATERIALS: The study was conducted on 83 single-rooted human teeth. Tooth crowns were cut and root canals were prepared using the step-back technique. Apical 3 mm of the roots were cut and a three-mm-deep cavity was prepared using an ultrasonic instrument...
2016: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/27759413/comparative-evaluation-of-microleakage-of-a-carbomer-fluoroapatite-enhanced-glass-ionomer-cement-on-primary-teeth-restorations
#18
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/27740643/the-impact-of-conical-and-nonconical-abutments-on-bacterial-infiltration-at-the-implant-abutment-interface
#19
Elen Guerra, Cristiane Pereira, Renata Faria, Antonio Olavo Jorge, Marco Antonio Bottino, Renata Marques de Melo
This study evaluated the in vitro bacterial microleakage at the implant-abutment interface of three prosthetic connections: external (EH) and internal hexagon (IH) and taper connection (TC: solid [ST], taper with internal hexagon [IT], and short taper [OT]). Escherichia coli (E coli) and Streptococcus sanguinis (S sanguinus) were inoculated in the apical portion of the abutment screw, which was immersed in sterile brain-heart infusion broth for 14 days. There were no differences between the percentages of bacterial infiltration for IH (9...
November 2016: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27733876/effect-of-finishing-time-on-microleakage-at-the-composite-repair-interface
#20
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
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