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Microleakage

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https://www.readbyqxmd.com/read/28650135/endodontic-microleakage-studies-a-comprehensive-review-correlation-between-different-methods-clinical-relevance-and-potential-laboratory-errors
#1
Farnaz Jafari, Saeed Rahimi, Shahriar Shahi, Sanaz Jafari
INTRODUCTION: Creation of a tight seal in endodontically treated root canals is of utmost importance. Clinical and laboratory studies have a great role in the assessment of the sealing ability of endodontic materials. The present review was undertaken to evaluate correlation between different techniques used in microleakage studies in endodontics and the potential laboratory errors. EVIDENCE ACQUISITION: A systematic search was run using Medline, Biosis, Cochrane, Embase, Google Scholar and Web of Science databases...
June 23, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28638561/importance-and-methodologies-of-endodontic-microleakage-studies-a-systematic-review
#2
REVIEW
Farnaz Jafari, Sanaz Jafari
INTRODUCTION: It is very important to obtain a tight seal in obturated root canal, making it necessary to conduct clinical or laboratory studies on the sealability of endodontic materials. Different methodologies have been historically used to assess microleakage of different endodontic materials. The aim of the present study was to comprehensively review different material testing methods used in microleakage studies, their interpretation and importance in endodontic literature. MATERIAL AND METHODS: A systematic search was conducted in Medline, Cochrane, and Web of Science databases...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28631551/apical-microleakage-in-root-canals-obturated-with-2-different-endodontic-sealer-systems-in-canine-teeth-of-dogs
#3
Chad W Lothamer, Ashley Anderson, Scott J Hetzel, Alex I Adrian, Christopher Snyder, Stephanie Goldschmidt, Jason W Soukup
An apical dye leakage test was utilized to compare 2 endodontic sealer systems commonly used in veterinary endodontic treatment. Rotary instrumentation followed by injection of 2 different sealers (GuttaFlow 2 and AH Plus) and a single master cone obturation technique were compared. Following obturation and restoration, specimens were immersed in India ink for 48 hours. A tooth mineral clearing technique was utilized to render the tooth samples transparent. Subsequently, the apices were evaluated for prevalence and magnitude of apical dye penetration under magnification...
June 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28621326/resin-infiltration-of-deproteinised-natural-occlusal-subsurface-lesions-improves-initial-quality-of-fissure-sealing
#4
Andrej M Kielbassa, Ina Ulrich, Rita Schmidl, Christoph Schüller, Wilhelm Frank, Vanessa D Werth
The aim of this ex vivo study was to evaluate the infiltration capability and rate of microleakage of a low-viscous resin infiltrant combined with a flowable composite resin (RI/CR) when used with deproteinised and etched occlusal subsurface lesions (International Caries Detection and Assessment System code 2). This combined treatment procedure was compared with the exclusive use of flowable composite resin (CR) for fissure sealing. Twenty premolars and 20 molars revealing non-cavitated occlusal carious lesions were randomly divided into two groups and were meticulously cleaned and deproteinised using NaOCl (2%)...
June 16, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28621281/evaluation-of-microleakage-in-class-v-restorations-with-three-different-adhesive-systems
#5
Shamim Anjum, Azar Malik, Satish Sharma
AIM: This study was conducted to evaluate the microleakage of class V cavities restored with composite resin and different adhesive systems. MATERIALS AND METHODS: In this experimental epidemiological investigation, a total of 75 freshly extracted human teeth were collected. The teeth were randomly divided into three groups (n = 25). Three different intermediate adhesive materials (Clearfil SE Bond, Single Bond, and Xeno III) were used for each group. RESULTS: On testing without the application of occlusal load, the maximum microleakage was seen for group III (Xeno III) followed by group I (Clearfil SE) and then group II (Single Bond)...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28621270/influence-of-hand-instrumentation-and-ultrasonic-scaling-on-the-microleakage-of-various-cervical-restorations-an-in-vitro-study
#6
Bita Rohani, Mehrdad Barekatain, Shirin Z Farhad, Navid Haghayegh
INTRODUCTION: In cervical lesions, various restorative materials can be inserted, which can be affected by the application of periodontal scalers. This study evaluated and compared the marginal seal of class V glass ionomer, composite resin, and amalgam restorations after subjecting them to hand instrumentation and ultrasonic scaling. MATERIALS AND METHODS: In this experimental study, 30 sound human first premolars were selected. In each tooth, buccal and lingual cavities (4 mm mesiodistal width, 3 mm occlusogingival height, and 2 mm depth) were made...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28575992/fabrication-of-superhydrophobic-coating-for-preventing-microleakage-in-a-dental-composite-restoration
#7
Danfeng Cao, Yingchao Zhang, Yao Li, Xiaoyu Shi, Haihuan Gong, Dan Feng, Xiaowei Guo, Zuosen Shi, Song Zhu, Zhanchen Cui
Superhydrophobic coatings were successfully fabricated by photo-crosslinked polyurethane (PU) and organic fluoro group-functionalized SiO2 nanoparticles (F-SiO2 NPs), and were introduced for preventing microleakage in a dental composite restoration. The F-SiO2 NPs possessed low surface energy and the PU can not only improve the mechanical stability but also promote F-SiO2 NPs to form multiscale structure, which could facilitate the properties of the as-prepared superhydrophobic coating by synergetic effect...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28571262/evaluation-of-microleakage-with-total-etch-self-etch-and-universal-adhesive-systems-in-class-v-restorations-an-in-vitro-study
#8
Anjali Gupta, Pradeep Tavane, Pankaj Kumar Gupta, Bellam Tejolatha, Ashik Ali Lakhani, Ram Tiwari, Shruti Kashyap, Gaurav Garg
INTRODUCTION: Adhesive dentistry is overwhelmingly evolving with respect to the dental surgeon's and patient's perspective. Embracing the concept of minimally invasive dentistry which follows minimum intervention performed to produce good adhesion and tooth coloured restoration, in turn makes the newer generation bonding agents more acceptable and appropriate withstanding the demand for stable restoration. AIM: To study and compare the extent of microleakage between tooth and restoration interface in class V composite resin restorations applying one Total Etch (Adper(TM) single bond), two Self Etch (Adper(TM) SE Plus, Adper(TM) Easy One) and Universal bonding agents using dye penetration method...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28569447/marginal-accuracy-and-internal-fit-of-dental-copings-fabricated-by-modern-additive-and-subtractive-digital-technologies
#9
Neha Nelson, Jyothi K S, Kiran Sunny
The margins of copings for crowns and retainers of fixed partial dentures affect the progress of microleakage and dental caries. Failures occur due to altered fit which is also influenced by the method of fabrication. An in-vitro study was conducted to determine among the cast base metal, copy milled zirconia, computer aided designing computer aided machining/manufacturing zirconia and direct metal laser sintered copings which showed best marginal accuracy and internal fit. Forty extracted maxillary premolars were mounted on an acrylic model and reduced occlusally using a milling machine up to a final tooth height of 4 mm from the cementoenamel junction...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28566851/an-in-vitro-evaluation-of-microleakage-associated-with-three-different-compomer-placement-techniques-in-primary-molars
#10
Mohita Gupta, Dinesh Rao, Sapna Hegde
BACKGROUND: Microleakage is one of the most frequently encountered problems in posterior tooth-colored restorations. Efforts to decrease this problem with resin restorations include techniques for reducing the ratio of bonded to unbonded restoration surfaces and following strategic incremental placement techniques to reduce residual stress at tooth-restoration interface which reduces the C-factor, hence microleakage. AIM: The present study aimed to evaluate microleakage associated with three placement techniques for compomer restorations in primary molars...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28546603/microleakage-around-class-v-composite-restorations-after-ultrasonic-scaling-and-sonic-toothbrushing-around-their-margin
#11
(no author information available yet)
The investigators suggest handscaling should be carried out in proximity to cervical resin composite restorations.
May 26, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28512488/in-vitro-microleakage-of-mineral-trioxide-aggregate-calcium-enriched-mixture-cement-and-biodentine-intra-orifice-barriers
#12
Fatemeh Ramezanali, Sasan Aryanezhad, Fatemeh Mohammadian, Fatemeh Dibaji, Mohammad Javad Kharazifard
INTRODUCTION: This in vitro study compared the coronal microleakage of mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement and Biodentine as intra-orifice barriers. METHODS AND MATERIALS: The study was conducted on 76 extracted single-canal human teeth. Their root canals were prepared using ProTaper rotary files and filled with gutta percha and AH-26 sealer using lateral condensation technique. Coronal 3 mm of the gutta percha was removed from the root canals and replaced randomly with MTA, CEM cement or Biodentine in the three experimental groups (n=22)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28422595/microleakage-of-sealants-after-phosphoric-acid-er-yag-laser-and-air-abrasion-enamel-conditioning-systematic-review-and-meta-analysis
#13
REVIEW
Ana Caroline Fumes, Daniele Lucca Longo, Andiara De Rossi, Tatiana Kelly da Silva Fidalgo, Francisco Wanderley Garcia de Paula E Silva, Maria Cristina Borsatto, Erika Calvano Küchler
PURPOSE: The aim of this systematic review and meta-analysis is to answer the focused question: Does the application of phosphoric acid, Er:YAG laser and air abrasion enamel conditioning methods previous to the oclusal sealant application in human permanent molars influence the microleakage? STUDY DESIGN: A literature research was carried out in the Pubmed Medline, Web of Science, Scopus and Cochrane databases using with the MeSH terms and keyword search strategy...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28414171/the-effects-of-water-on-degradation-of-the-zirconia-resin-bond
#14
C Chen, Y Chen, Z Lu, M Qian, H Xie, F R Tay
OBJECTIVES: 10-methacryloyloxydecyldihydrogenphosphate (MDP) containing primers improve bonding of yttria-stabilised tetragonal zirconia (Y-TZP) to methacrylate resins. The present study investigated the role played by water in the deterioration of MDP-mediated zirconia-resin bonds. METHODS: Grit-blasted Y-TZP plates were conditioned with two MDP primers and bonded with resin for shear bond strength (SBS) testing. Additional bonded plates were aged hydrothermally and compared with unaged Y-TZP after 24hours of water-storage or 6 months of water/acid/alkali-storage...
April 13, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28392814/microleakage-evaluation-at-implant-abutment-interface-using-radiotracer-technique
#15
Hakimeh Siadat, Mahnaz Arshad, Hossein-Ali Mahgoli, Babak Fallahi
OBJECTIVES: Microbial leakage through the implant-abutment (I-A) interface results in bacterial colonization in two-piece implants. The aim of this study was to compare microleakage rates in three types of Replace abutments namely Snappy, GoldAdapt, and customized ceramic using radiotracing. MATERIALS AND METHODS: Three groups, one for each abutment type, of five implants and one positive and one negative control were considered (a total of 17 regular body implants)...
June 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28387992/influence-of-post-space-preparation-on-the-apical-leakage-of-calamus-single-cone-and-cold-lateral-condensation-obturation-techniques-a-computerized-fluid-filtration-study
#16
Zeynep Özkurt-Kayahan, Güher Barut, Zuhal Ulusoy, Hasan Oruçoğlu, Mehmet Baybora Kayahan, Ender Kazazoğlu, Faruk Haznedaroğlu
PURPOSE: Apical microleakage between the root canal and periapical tissues is considered a common cause of endodontic failure. The aim of this study was to evaluate the apical microleakage of various obturation techniques after immediate post space preparations with different drills. MATERIALS AND METHODS: One hundred twenty human single-rooted teeth were selected for this study. The coronal portions were removed to achieve a uniform length of 15 mm. All root canals were instrumented with ProTaper Next rotary files using crown-down technique...
April 7, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28384974/a-comparative-study-of-the-quality-of-apical-seal-in-resilon-epiphany-se-following-intra-canal-irrigation-with-17-edta-10-citric-acid-and-mtad-as-final-irrigants-a-dye-leakage-study-under-vacuum
#17
Saravana Karthikeyan Balasubramanian, Vidya Saraswathi, Nidambur Vasudev Ballal, Shashi Rashmi Acharya, J Sivakumar Sampath, Sandeep Singh
INTRODUCTION: Adequate apical sealing ability of the root canal filling material is an essential requisite for a successful endodontic therapy. Various endodontic irrigants are used for the removal of smear layer before obturating with a solid core material, thereby, reducing microleakage and improving apical seal. Resilon, a synthetic material was developed as an alternative to replace the conventional gutta-percha (standard root canal filling material) and traditional sealers for the obturation of endodontically treated teeth...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28377645/comparative-evaluation-of-bond-strength-and-microleakage-of-standard-and-expired-composite-at-resin-dentin-interface-an-in-vitro-study
#18
Nidhi Talreja, Shilpy Singla, N D Shashikiran
BACKGROUND: Evaluation of bond strength and microleakage caused by polymerization shrinkage provides a screening mechanism and an indication of the potential for the clinical success of composite restorations. AIM: The aim of this study was to determine the effect on shear bond strength and microleakage of standard and expired composites. MATERIALS AND METHODS: Selected specimens were etched using 37% phosphoric acid for 15 seconds and were randomly divided into four groups...
January 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28318391/models-of-caries-formation-around-dental-composite-restorations
#19
REVIEW
J L Ferracane
The main reason cited for the replacement of dental composite restorations is the recurrence of caries. Numerous models-both in vitro, with acid gels or bacterial biofilms, and in situ, with dental appliances-have been used to study caries formation around dental composites. The literature shows that many factors may affect caries formation, including marginal gap formation, gap size, the local chemical environment, the durability of the bonded interface, the extent of bacterial penetration, and the presence of mechanical loading...
April 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28298989/effects-of-different-intra-canal-medicaments-on-the-push-out-bond-strength-of-endodontic-sealers
#20
Sahar Shakouie, Shahriar Shahi, Mohammad Samiei, Amin-Salem Milani, Mohammad-Frough Reyhani, Sara Paksefat, Mahsa Eskandarinekhad, Negin Ghasemi
BACKGROUND: One of the essential properties of the root canal sealers is the adhesion to root canal dentin and their higher bond strength decreases the microleakage. The aim of the present study was to compare the effect of Different Intracanal medicaments on the push out bond strength of AH26 and MTA Fillapex sealers. MATERIAL AND METHODS: A total of 104 one-rooted extracted human teeth were divided into 4 (n=26) experimental groups. After the cleaning and shaping, the root canals were filled with Ca(OH)2, triantibiotic paste (TAP), Metapex or 2% chlorhexidine gel for two weeks...
March 2017: Journal of Clinical and Experimental Dentistry
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