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Microleakage

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https://www.readbyqxmd.com/read/29465062/microleakage-of-different-adhesive-systems-in-primary-molars-prepared-by-er-yag-laser-or-bur
#1
I O Kalyoncu, F Eren-Giray, N Huroglu, E Egil, I Tanboga
Background and aim: This study aimed to examine the microleakage of class V cavities of primary molars prepared by either a conventional dental bur or Er:YAG laser and one of two different adhesive systems. Methods: A total of 50 tooth samples from primary molars were used in this study. They were randomly assigned into five experimental groups of 10 samples each, according to the cavity preparation technique and the type of adhesive system applied to the cavities...
February 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29460513/the-effect-of-gingival-wall-location-on-the-marginal-seal-of-class-ii-restorations-prepared-with-a-flowable-bulk-fill-resin-based-composite
#2
P Segal, V Candotto, A Ben-Amar, M Eger, S Matalon, D Lauritano, Z Ormianer
SureFil SDR is a flowable resin-based composite that allows a single incremental bulk placement. The marginal seal of SureFil SDR at the gingival margins of class II restorations located apical to the cemento-enamel-junction (CEJ) has not been adequately evaluated compared to those located occlusal to the CEJ. Forty class II cavities were prepared in human molars. The gingival margins of 20 preparations were located 0.5 mm occlusal to the CEJ, and the other 20 preparations were located 0.5 mm apical to the CEJ...
January 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29446238/bacterial-microleakage-at-the-abutment-implant-interface-in-vitro-study
#3
Carlos Larrucea, Aparicio Conrado, Denise Olivares, Carlos Padilla, Andrea Barrera, Olga Lobos
INTRODUCTION: In implant rehabilitation, a microspace is created at the abutment-implant interface (AII). Previous research has shown that oral microbiome can proliferate in this microspace and affect periimplant tissues, causing inflammation in peri-implant tissues. Preventing microbial leakages through the AII is therefore an important goal in implantology. OBJECTIVE: To determine the presence of marginal bacterial microleakage at the AII according to the torque applied to the prosthetic implant in vitro...
February 15, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29386776/a-comparative-evaluation-of-sealing-ability-of-four-root-end-filling-materials-using-fluid-filtration-method-an-in-vitro-study
#4
Shilpa Shetty, Geeta Hiremath, Mahantesh Yeli
Aim of the Study: The aim of this study was to compare and evaluate the sealing ability of four root end filling materials mineral trioxide aggregate (MTA)-Plus, Biodentine, MTA (MTA Angelus) and glass ionomer cement (GIC) using fluid filtration method. Materials and Methods: Forty-four extracted, human single-rooted teeth were collected. The crown of each tooth was decoronated 2 mm above the cementoenamel junction. Canals were negotiated, instrumented, obturated using lateral compaction method...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29364339/effect-of-erosive-challenges-on-deciduous-teeth-undergoing-restorative-procedures-with-different-adhesive-protocols-an-in-vitro-study
#5
Cristiane Meira Assunção, Marcelo Goulart, Tattiana Enrich Essvein, Nicole Marchioro Dos Santos, Maria Carolina Guilherme Erhardt, Adrian Lussi, Jonas de Almeida Rodrigues
To evaluate the effect of erosive challenges on the tooth- restoration interface of deciduous teeth treated with different adhesive protocols. Deciduous molars were cut mesiodistally, then embedded, abraded and polished (n=80). Samples were randomly divided according to the adhesive system used into: G1 (Adper Single Bond2®, etch-and-rinse), G2 (Universal Single Bond®, self-etching), G3 (OptibondFL®, etch-and-rinse with Fluoride) and G4 (BondForce®, self-etching with Fluoride). After standardized cavity preparation (2 mm diameter x 2 mm depth), adhesive systems were applied and samples were restored (composite resin Z350®)...
January 18, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29306531/the-post-endodontic-adhesive-interface-theoretical-perspectives-and-potential-flaws
#6
REVIEW
Georgios Maroulakos, Jianing He, William W Nagy
INTRODUCTION: The aim of this review was to analyze the potential of successful bonds of endodontic posts to radicular dentin as well as the limitations of the post-endodontic adhesive interface. METHODS: The MEDLINE/PubMed and Web of Science electronic databases were searched. The search was augmented by a manual search of the pertinent bibliographies. RESULTS: The post-endodontic adhesive interface finds application in the endodontic cohesive units...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29290183/comparison-of-retrograde-primary-and-secondary-bonding-materials-with-tooth-substance
#7
Tabinda Nawaz Khan, Syed Yawar Ali Abidi
OBJECTIVE: To compare the microleakage of MTA (mineral trioxide aggregate) and resin-modified GIC (glass ionomer vitremer) as retrograde endodontic material. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Operative Department of DIIKIOHS (DUHS) and NED University, Karachi, from February to June 2014. METHODOLOGY: Forty human anterior teeth were divided into four groups. Each tooth was endodontically treated...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29279545/shear-bond-strength-and-microleakage-of-a-new-self-etch-adhesive-pit-and-fissure-sealant
#8
Vinay Pitchika, Sebastian Birlbauer, Meng-Ling Chiang, Christoph Schuldt, Alexander Crispin, Reinhard Hickel, Jan Kühnisch
This study aimed to evaluate the shear bond strength (SBS) and microleakage of a new self-etch adhesive-based fissure sealant (EG) on aprismatic enamel in comparison to conventional fissure sealing with 30 s acid etching (CG). The fissures were sealed according to the manufacturer's instructions. Each group was divided into 3 subgroups: 1-day water storage, 3-month water storage, and 5,000× thermocycling. After measuring SBS using the Ultradent method, failure mode was analyzed. In additional 16 teeth, microleakage was tested using dye penetration method...
December 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29243397/effect-of-strong-tooth-bleaching-with-38-hydrogen-peroxide-on-marginal-seal-of-dental-restorations-using-self-etch-and-total-etch-adhesives
#9
Morakot Piemjai, Spun Lenglerdphol
The purpose of this study was to evaluate the distance and/or thickness of dye penetration at enamel and cementum/dentin margins of restorations before and after vital bleaching. Class V cavities were prepared on extracted human premolars and restored with light-cured resin composite using either AQ-Bond or Single-Bond2 adhesives. Four conditions: no bleaching (control), restored before bleaching (RB), bleached and immediately restored (BIR), bleached and stored in artificial saliva for 7 days then restored (B7R), were used for each adhesive group...
December 15, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29236177/effect-of-er-yag-laser-enamel-conditioning-and-moisture-on-the-microleakage-of-a-hydrophilic-sealant
#10
Zeynep Aslı Güçlü, Andrew Paul Hurt, Nazmiye Dönmez, Nichola Jayne Coleman
For a given sealant, successful pit and fissure sealing is principally governed by the enamel conditioning technique and the presence of moisture contamination. A new generation of hydrophilic resin sealants is reported to tolerate moisture. This study investigates the impact of Er:YAG laser pre-conditioning and moisture contamination on the microleakage of a recent hydrophilic sealant. Occlusal surfaces of extracted human molars were either acid etched (n = 30), or successively lased and acid etched (n = 30)...
December 13, 2017: Odontology
https://www.readbyqxmd.com/read/29225648/evaluating-the-accuracy-of-two-microleakage-assessment-methods-for-mineral-trioxide-aggregate-and-calcium-enriched-mixture-cement
#11
Fatemeh Ayatollahi, Milad Hazeri Baqdad Abad, Seyed Hossein Razavi, Mahdi Tabrizizadeh, Reza Ayatollahi, Fatemeh Zarebidoki
Introduction: Multiple methods for evaluating microleakage have been introduced over the years, but there has been no agreement as to which technique will give more accurate results. The aim of this study was to compare the accuracy and results of fluid filtration and marginal adaptation methods for mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement apical plugs. Methods and Materials: A total of 250 single-rooted human teeth were collected...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29211287/comparative-study-between-laser-and-conventional-techniques-for-class-v-cavity-preparation-in-gamma-irradiated-teeth-in-vitro-study
#12
Amr H M Rasmy, Tarek A Harhash, Rami M S Ghali, Eman M F El Maghraby, Dalia H El Rouby
OBJECTIVE: The purpose of this study was to compare laser with conventional techniques in class V cavity preparation in gamma-irradiated teeth. METHODS: Forty extracted human teeth with no carious lesions were used for this study and were divided into two main groups: Group I (n = 20) was not subjected to gamma radiation (control) and Group II (n=20) was subjected to gamma radiation of 60 Gray. Standard class V preparation was performed in buccal and lingual sides of each tooth in both groups...
November 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29194924/microleakage-around-zirconia-crown-margins-after-ultrasonic-scaling-with-self-adhesive-resin-or-resin-modified-glass-ionomer-cement
#13
Bright Chang, Ronald Goldstein, Chee Paul Lin, Sudha Byreddy, Nathaniel C Lawson
OBJECTIVES: To measure microleakage around zirconia crown margins cemented with self-adhesive resin or resin modified glass ionomer (RMGI) cement after ultrasonic scaling. METHODS: 16 molars were prepared for crowns (margin 0.5 mm coronal of cementum-enamel junction). Preparations were digitally scanned and zirconia crowns milled. Specimens were divided into two groups (n = 8): self-adhesive resin (RelyX Unicem 2) or resin modified glass ionomer (RMGI) (RelyX Luting Plus) cements...
December 1, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29184833/comparison-of-coronal-leakage-in-tooth-preparation-with-two-single-file-systems-and-three-obturation-techniques
#14
Eshaghali Saberi, Shahram Shahraki Zahedani, Sediqe Ebrahimipour, Neda Valian
Aims and Objectives: Root canal preparation and obturation are of great importance in endodontics. Its purpose is to eliminate pulpal and periradicular disease. The aim of this study was to compare coronal bacterial microleakage in prepared root canals using Neoniti A1 and Reciproc files that obturated with lateral compaction, single cone gutta-percha, and hybrid (tapered cone/lateral compaction) methods. Materials and Methods: In this ex vivo study, a total of 110 single-rooted mandibular first premolars were choose and randomly divided into two study groups A and B (each 45) that one group was prepared with Reciproc and another with Neoniti A1 and negative and positive control groups (each 10)...
October 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29178733/the-role-of-adhesive-materials-and-oral-biofilm-in-the-failure-of-adhesive-resin-restorations
#15
REVIEW
Roberto Pinna, Paolo Usai, Enrica Filigheddu, Franklin Garcia-Godoy, Egle Milia
PURPOSE: To critically discuss adhesive materials and oral cariogenic biofilm in terms of their potential relevance to the failures of adhesive restorations in the oral environment. METHODS: The literature regarding adhesive restoration failures was reviewed with particular emphasis on the chemistry of adhesive resins, weakness in dentin bonding, water fluids, cariogenic oral biofilm and the relations that influence failures. Particular attention was paid to evidence derived from clinical studies...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29167706/the-effect-of-oxalate-based-desensitizers-on-the-microleakage-and-shear-bond-strength-of-resin-modified-glass-ionomer
#16
Maryam Firouzmandi, Fereshteh Valipour, Maryam Roshanzamir, Tayebeh Mobaleghi
Background: The first line of intervention to alleviate tooth sensitivity is to use dentin desensitizers such as oxalate-based desensitizers. When the dentin sensitivity continues even after application of desensitizers the next intervention would be restoration of the lesion. The aim of this in vitro study was to investigate the effect of prior application of oxalate-based desensitizer on the marginal microleakage and shear bond strength of resin modified glass ionomer (RMGI) restorations...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29167683/microleakage-of-two-bulk-fill-and-one-conventional-composite-in-class-ii-restorations-of-primary-posterior-teeth
#17
Shahram Mosharrafian, Alireza Heidari, Pegah Rahbar
Objectives: This study aimed to assess and compare the microleakage of two bulk fill and one conventional composite in class II restorations of primary posterior teeth. Materials and Methods: This in vitro, experimental study was conducted on 60 primary mandibular second molars, which were randomly divided into three groups. Standard class II cavities were prepared in teeth and restored with 3M bulk fill composite in group 1, SonicFill bulk fill composite in group 2 and Z250 conventional composite in group 3...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29150135/effect-of-different-resin-luting-cements-on-the-marginal-fit-of-lithium-disilicate-pressed-crowns
#18
Radek Mounajjed, Thomas J Salinas, Tomas Ingr, Basel Azar
STATEMENT OF PROBLEM: The vertical marginal discrepancy of restorations can increase upon cementation, and poor marginal fit can lead to cement dissolution, marginal discoloration, microleakage, and secondary caries. The amount of increase is related to the type of luting cement used, but how lithium disilicate pressed crowns are affected by different resin cements is unclear. PURPOSE: The purpose of this in vitro study was to compare the effect of using different resin luting cements on the vertical marginal discrepancy of lithium disilicate pressed crowns...
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29136013/monomer-conversion-dimensional-stability-strength-modulus-surface-apatite-precipitation-and-wear-of-novel-reactive-calcium-phosphate-and-polylysine-containing-dental-composites
#19
Kanokrat Kangwankai, Sarah Sani, Piyaphong Panpisut, Wendy Xia, Paul Ashley, Haralampos Petridis, Anne Margaret Young
PURPOSE: The aim was to assess monomer conversion, dimensional stability, flexural strength / modulus, surface apatite precipitation and wear of mono / tri calcium phosphate (CaP) and polylysine (PLS)-containing dental composites. These were formulated using a new, high molecular weight, fluid monomer phase that requires no polymerisation activator. MATERIALS AND METHODS: Urethane and Polypropylene Glycol Dimethacrylates were combined with low levels of an adhesion promoting monomer and a light activated initiator...
2017: PloS One
https://www.readbyqxmd.com/read/29133967/comparison-of-marginal-microleakage-of-flowable-composite-restorations-in-primary-canine-teeth-prepared-with-high-speed-diamond-bur-er-yag-laser-and-er-cr-ysgg-laser
#20
Beheshteh Malekafzali, Mohammad Asnaashari, Fateme Javadi
Background and Objectives: Adhesive restorations have become highly popular in pediatric dentistry, and novel methods of cavity preparation with minimal patient discomfort including Er:YAG and Er,Cr:YSGG laser preparations have greatly advanced. This study aimed to compare the microleakage of composite restorations of class V cavities prepared in primary canine teeth with high-speed bur and Er:YAG and Er,Cr:YSGG lasers. Materials and Methods: This in vitro study was conducted on 30 class V cavities prepared on the buccal surfaces of primary canine teeth in three groups (n = 10) of bur preparation, Er:YAG laser and Er,Cr:YSGG laser...
September 30, 2017: Laser Therapy
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