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Microleakage

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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
#1
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/29674822/evaluation-of-bioceramics-and-zirconia-reinforced-glass-ionomer-cement-in-repair-of-furcation-perforations-an-in-vitro-study
#2
Anish Kumar Lagisetti, Priyadarshini Hegde, Mithra Nidarsh Hegde
Aim: The aim and objective of this study was to evaluate and compare the sealing ability of EndoSequence BC RRM-fast set putty, Proroot mineral trioxide aggregate (MTA), and Zirconomer in the repair of furcal perforation by measuring dye leakage under stereomicroscope. Methodology: A standard access cavity was made on forty-eight extracted mandibular and maxillary first molars followed by creating a furcal perforation in the center of the pulp chamber by using No...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674815/apical-dye-leakage-of-two-single-cone-root-canal-core-materials-hydrophilic-core-material-and-gutta-percha-sealed-by-different-types-of-endodontic-sealers-an-in-vitro-study
#3
Mohamed Abdel Aziz Mohamed El Sayed, Hussam Al Husseini
Aim of the Study: The aim of this study was to compare the apical sealing ability of two single-cone filling materials when sealed with different types of root canal sealers. Materials and Methods: Eighty extracted maxillary and mandibular canines were selected and their crowns were cut. The root canals were prepared using ProTaper Universal rotary system until size F4 and then divided into seven experimental groups ( n = 10 each) and two control groups ( n = 5 each)...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29670735/microleakage-of-porcelain-laminate-veneers-cemented-with-different-bonding-techniques
#4
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/29670708/sealing-effectiveness-of-fissure-sealant-bonded-with-universal-adhesive-systems-on-saliva-contaminated-and-noncontaminated-enamel
#5
Mahtab Memarpour, Fereshteh Shafiei, Mehran Zarean, Faranak Razmjoei
Background: The effectiveness of sealants is dependent upon their adhesion to enamel surface. The aim of the study was to evaluate the sealing ability of a pit and fissure sealant used with a universal adhesive (etch-and-rinse vs. self-etch modes) when the site is contaminated with saliva. Adhesive properties were evaluated as microleakage and scanning electron microscopic (SEM) characteristics. Material and Methods: A total of 72 mandibular third molars were randomly divided into 6 groups (n=12)...
January 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29663915/microleakage-of-cements-in-prefabricated-zirconia-crowns
#6
Paula Stepp, Brian R Morrow, Martha Wells, David A Tipton, Franklin Garcia-Godoy
PURPOSE: The purpose of this study was to investigate and compare microleakage of prefabricated posterior NuSmile® ZR and EZCrowns when cemented with BioCem and Ketac Cem dental cements. METHODS: Forty extracted permanent teeth (n equals 10 per group) were fitted for either NuSmile or EZCrowns prefabricated posterior zirconia crowns and cemented with BioCem or Ketac Cem, for a total of four groups. Crowned teeth were placed in Dulbecco's Phosphate Buffered Saline solution at 37 degrees Celsius for 24 hours...
March 15, 2018: Pediatric 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
#7
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/29629492/the-influence-of-implant-abutment-connection-on-the-screw-loosening-and-microleakage
#8
Katsuhiro Tsuruta, Yasunori Ayukawa, Tatsuya Matsuzaki, Masafumi Kihara, Kiyoshi Koyano
BACKGROUND: There are some spaces between abutment and implant body which can be a reservoir of toxic substance, and they can penetrate into subgingival space from microgap at the implant-abutment interface. This penetration may cause periimplantitis which is known to be one of the most important factors associated with late failure. In the present study, three kinds of abutment connection system, external parallel connection (EP), internal parallel connection (IP), and internal conical connection (CC), were studied from the viewpoint of microleakage from the gap between the implant and the abutment and in connection with the loosening of abutment screw...
April 9, 2018: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29627738/polymerization-shrinkage-stress-of-resin-based-dental-materials-a-systematic-review-and-meta-analyses-of-composition-strategies
#9
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...
March 23, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29624627/influence-of-iatrogenic-gaps-cement-type-and-time-on-microleakage-of-cast-posts-using-spectrophotometer-and-glucose-filtration-measurements
#10
Ebtissam M Al-Madi, Samar A Al-Saleh, Reem I Al-Khudairy, Taibah W Aba-Hussein
PURPOSE: To determine the influence of iatrogenic gaps, type of cement, and time on microleakage of cast posts using spectrophotometer and glucose filtration measurements. MATERIALS AND METHODS: Forty-eight single-rooted teeth were divided into eight groups of six teeth each. Teeth were instrumented and obturated, and a cast post was fabricated. In addition to two control groups (positive and negative), a total of six groups were prepared: In four groups, an artificial 2- to 3-mm gap was created between post and residual gutta percha (GP), and two groups were prepared with intimate contact between post and residual GP...
April 6, 2018: International Journal of Prosthodontics
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
#11
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/29578300/coronal-microleakage-of-teeth-restored-with-cast-posts-and-cores-cemented-with-four-different-luting-agents-after-thermocycling
#12
Maryam Mohajerfar, Kaveh Nadizadeh, Tabasom Hooshmand, Elaheh Beyabanaki, Hamid Neshandar Asli, Siamak Sabour
PURPOSE: The apical seal provided by a root canal filling may be breached via coronal leakage. This study aimed to compare the teeth restored with custom-made cast metal posts and cores cemented with different luting agents in terms of coronal microleakage after thermocycling. MATERIALS AND METHODS: This in vitro study was conducted on 32 extracted single-canal teeth. Root canals were prepared by step-back technique and filled with gutta percha and sealer. The coronal 7 mm of gutta percha was removed, and post space was prepared using peeso reamers #2 and #3 consecutively...
March 26, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29573737/polymerization-shrinkage-stress-of-resin-based-dental-materials-a-systematic-review-and-meta-analyses-of-technique-protocol-and-photo-activation-strategies
#13
REVIEW
Eliseu Aldrighi Münchow, Carine Tais Welter Meereis, Wellington Luiz de Oliveira da Rosa, Adriana Fernandes da Silva, Evandro Piva
PURPOSE: A systematic review was conducted to determine whether there were any alternative technique or additional step strategies available to reduce and control polymerization shrinkage stress development in dental resin-based restorative materials. DATA SOURCES: This report followed the PRISMA Statement. A total of 36 studies were included in this review. 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...
March 8, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29570027/high-bond-durability-of-universal-adhesives-on-glass-ceramics-facilitated-by-silane-pretreatment
#14
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/29568756/the-repair-of-furcal-perforations-in-different-diameters-with-biodentine-mta-and-irm-repair-materials-a-laboratory-study-using-an-e-faecalis-leakage-model
#15
E Övsay, R F Kaptan, F Şahin
The aim of this study is to evaluate the microleakage of repair materials MTA, IRM, and Biodentine applied on furcal perforations with different diameters. One hundred and forty extracted human teeth were used in this study. The teeth were divided into 2 main groups (60 teeth in each) which were then divided into 3 subgroups ( n = 20). The remaining 20 teeth were divided into 2 groups (10 in each) to serve as controls. The furcal areas of the teeth were perforated with #2 cylindrical burs in Group 1 whereas perforations were made using #4 cylindrical burs in Group 2...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29552035/relationship-between-the-apical-preparation-diameter-and-the-apical-seal-an-in-vitro-study
#16
Kaoutar Laslami, Sara Dhoum, Amine El Harchi, Iman Benkiran
Objectives: The aim of the study is to define the relationship between the apical preparation diameter and the apical sealing ability to highlight the importance of the preservation of the diameter and the original position of the apical foramen. Materials and Methods: 50 extracted maxillary incisors were randomly allocated into three groups of 15 teeth each (n = 15) according to the apical preparation size: Group 1: finishing file F1 corresponding to size 20 reached the working length (ProTaper Universal system Dentsply®); Group 2: prepared up to size 30 corresponding to finishing file F30; Group 3: prepared up to size 50 corresponding to finishing file F5...
2018: International Journal of Dentistry
https://www.readbyqxmd.com/read/29513236/conservative-management-of-a-rootless-premolar-a-case-report-with-4-year-follow-up
#17
Mahesh Ramakrishnan, Victor Samuel
Any disturbance in the primary tooth can lead to an altered eruption pattern of the corresponding permanent tooth. This article presents a case of a carious permanent second premolar with an immature root that erupted prematurely following extraction of the infected primary second molar. The carious premolar was treated with a stepwise excavation, and a primary stainless steel crown was adapted to prevent microleakage and restoration failure. A follow-up evaluation at 4 years showed remarkable healing and complete root formation...
March 2018: General Dentistry
https://www.readbyqxmd.com/read/29513233/effect-of-composite-warming-on-shear-bond-strength
#18
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/29507917/are-clinically-successful-amalgam-and-art-restorations-in-primary-molars-microgap-free
#19
Maite Cevallos Mijan, Soraya Coelho Leal, Ewald M Bronkhorst, Jo E Frencken
PURPOSE: To determine whether the frequency of microleakage at the margin of the tooth-restoration interface in primary molars restored with high-viscosity glass-ionomer cement (HVGIC) differs from that of primary molars restored with amalgam. MATERIALS AND METHODS: The HVGIC restorations were performed according to the ART method. A total of 19 naturally exfoliated primary molars (10 amalgam and 9 ART/HVGIC) with clinically assessed intact restorations fulfilled the inclusion criteria...
2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29504326/evaluation-of-micro-leakage-of-root-canals-filled-with-different-obturation-techniques-an-in-vitro-study
#20
Maham Muneeb Lone, Farhan Raza Khan
BACKGROUND: Despite a plethora of studies done comparing different obturation techniques using gutta-percha, there is no consensus as to which obturation technique results in a 'better' sealing of root canal space. Aims of the study are to compare mean apical micro leakage in root canals of extracted teeth obturated with cold laterally compacted gutta-percha and thermoplasticised injectable gutta-percha using calcium hydroxide based sealer. METHODS: It was an in-vitro experimental study carried out using extracted teeth...
January 2018: Journal of Ayub Medical College, Abbottabad: JAMC
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