Download or read book Microleakage of a New Root Canal Sealer written by Rodney Charles Brown and published by . This book was released on 1993 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Electrochemical Evaluation of Four Different Root Canal Sealers for Microleakage written by Gregory Charles Haasch and published by . This book was released on 1985 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An In vitro Comparison of Bacterial Microleakage of Zinc oxide Eugenal and Brasseler Bioceramic Sealer written by Joyce E. Nazzai and published by . This book was released on 2011 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION: New sealers have been placed on the market to improve the property of a hermetic seal within the root canal and decrease the gap between the gutta-percha and dentin wall. Differences in the adhesive properties of endodontic sealers may be expected because their interaction with either dentin or gutta-percha may vary with their chemical composition. No specific interaction either with dentin or gutta-percha is expected from the setting reaction of calcium hydroxide based sealers and the epoxy-based sealers. The setting reaction of the zinc oxide-eugenol mixtures is a chelation reaction occurring with the zinc ion of the zinc oxide. Development and maintenance of the seal are essential to optimize the long-term success rate of root canal treatment. An ideal endodontic sealer should, in part, adhere firmly both to dentin and gutta-percha. PURPOSE: The purpose of this study is to evaluate the sealing properties of EndoSequence BC sealer TM, a bioceramic sealer, and Roth's sealer using gutta-percha with warm vertical condensation and using the single cone technique with the EndoSequence BC sealer only. The goal is to see if there is a significant difference in microleakage between teeth sealed with the bioceramic sealer and teeth sealed with Roth's sealer. MATERIALS & METHODS: Eighty-five single-rooted maxillary anterior teeth were used for this study. Endodontic cleaning and shaping of each root canal system was accomplished using K-type hand files and NiTi Rotary files. Group A consisted of twenty-seven anterior teeth, which were obturated using EndoSequence BC sealer and gutta-percha with System B and Obtura. Another twenty-seven anterior teeth, Group B, was obturated using Roth's sealer and gutta-percha with System B and Obtura. A final group, Group C with 27 teeth was obturated using the single cone technique by means of a single gutta-percha point with Endosequence BC sealer. Two teeth were used as a positive control group, and two other teeth as a negative control group. A microbial leakage apparatus was constructed using a similar two-chamber method described by Torabinejad et al. E. faecalis ATCC 29212 was the test bacteria which was used in this study to determine microleakage The outcome of interest (bacterial turbidity) and time-to-leakage (in days), will be determined for each of the samples. Survival analysis will be used to compare the two groups, with a Kaplan-Meier plot to visualize the results and a nonparametric log-rank test for the group comparison RESULTS: No microleakage was observed in the negative control or group B. Microleakage was observed in all the positive control. Group A and C had a significantly higher proportion of samples with microleakage than group B (p

Download or read book The Root Canal Biofilm written by Luis E. Chávez de Paz and published by Springer. This book was released on 2015-10-20 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the current state of research on the basic scientific aspects of root canal biofilm biology within a clinically applicable context. Root canal biofilms are complex polymicrobial structures adhering to the root canal surface that are formed by microorganisms invading the pulpal space of teeth, and are associated with persistent root canal infections. Concerted efforts to study root canal biofilms have been made in the past decade, resulting in the publication of observational and experimental studies that detail the morphology and biology of these structures in infected root canals. In addition to confirming that bacteria in root canals do not exist in free-floating planktonic states as previously assumed, this new information on root canal biofilm infections has provided an opportunity to re-evaluate conventional clinical protocols and improve endodontic therapeutic measures.

Download or read book An In vitro Evaluation of Microleakage of a Polydimethylsiloxane based Root Canal Obturation System written by Theodoros Aneziris and published by . This book was released on 2008 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An In vitro Comparison of Bacterial Microleakage of Zinc oxide Eugenol and Brasseler Biceramic Seale written by Joyce F. Nazzal and published by . This book was released on 2011 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: New sealers have been placed on the market to improve the property of a hermetic seal within the root canal and decrease the gap between the gutta-percha and dentin wall. Differences in the adhesive properties of endodontic sealers may be expected because their interaction with either dentin or gutta-percha may vary with their chemical composition. No specific interaction either with dentin or gutta-percha is expected from the setting reaction of calcium hydroxide based sealers and the epoxy-based sealers. The setting reaction of the zinc oxide-eugenol mixtures is a chelation reaction occurring with the zinc ion of the zinc oxide. Development and maintenance of the seal are essential to optimize the long-term success rate of root canal treatment. An ideal endodontic sealer should, in part, adhere firmly both to dentin and gutta-percha. PURPOSE: The purpose of this study is to evaluate the sealing properties of EndoSequence BC sealer TM, a bioceramic sealer, and Roth's sealer using gutta-percha with warm vertical condensation and using the single cone technique with the EndoSequence BC sealer only. The goal is to see if there is a significant difference in microleakage between teeth sealed with the bioceramic sealer and teeth sealed with Roth's sealer. MATERIALS & METHODS: Eighty-five single-rooted maxillary anterior teeth were used for this study. Endodontic cleaning and shaping of each root canal system was accomplished using K-type hand files and NiTi Rotary files. Group A consisted of twenty-seven anterior teeth, which were obturated using EndoSequence BC sealer and gutta-percha with System B and Obtura. Another twenty-seven anterior teeth, Group B, was obturated using Roth's sealer and gutta-percha with System B and Obtura. A final group, Group C with 27 teeth was obturated using the single cone technique by means of a single gutta-percha point with Endosequence BC sealer. Two teeth were used as a positive control group, and two other teeth as a negative control group. A microbial leakage apparatus was constructed using a similar two-chamber method described by Torabinejad et al. E. faecalis ATCC 29212 was the test bacteria which was used in this study to determine microleakage The outcome of interest (bacterial turbidity) and time-to-leakage (in days), will be determined for each of the samples. Survival analysis will be used to compare the two groups, with a Kaplan-Meier plot to visualize the results and a nonparametric log-rank test for the group comparison RESULTS: No microleakage was observed in the negative control or group B. Microleakage was observed in all the positive control. Group A and C had a significantly higher proportion of samples with microleakage than group B (p

Download or read book Materials for the Direct Restoration of Teeth written by John Nicholson and published by Woodhead Publishing. This book was released on 2016-09-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials for the Direct Restoration of Teeth focuses on the important role teeth play in our lives and how biomaterials scientists are ensuring that new dental materials are functional and esthetic. As research in the field is shifting away from traditional materials like metal, and towards more advanced materials, such as resins and ceramics, this book on the subject of modern materials for the direct repair of teeth provides readers with a comprehensive reference. The most pertinent modern dental materials and their properties and applications for the direct restoration of teeth are presented, along with case examples and guidance notes making this book an essential companion for materials scientists and clinicians. - Provides comprehensive coverage of conventional and modern materials for direct restoration of teeth - Includes guidance notes and case examples to support dental clinicians in decision-making - Authored by a scientist and a clinician, the book provides a balanced and complete treatise of the subject

Download or read book Restoration of Root Canal Treated Teeth written by Jorge Perdigão and published by Springer. This book was released on 2015-10-02 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive and up-to-date overview of the restoration of teeth retained through root canal treatment, from the perspective of adhesive dentistry. The challenge of adhesion to root dentin is first explained and guidance provided on assessment of the restorability of endodontically treated teeth. The types of prefabricated passive post are then described in detail. The advantages and disadvantages of each type are outlined, with identification of the factors that influence post selection. Further topics include the ferrule effect, evidence‐based clinical applications of fiber posts and new methods to lute fiber posts to the root canal without dentin adhesives. In addition, frequent myths are identified and dispelled. All aspects are illustrated with clinical and laboratory images, diagrams and high-resolution electron microscopy photographs.

Download or read book Microleakage of Dentine Bonded Root Canal Fillings written by Jaya Raman and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Microleakage of Dentine-bonded Root Canal Fillings" by Jaya, Raman, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract Aim To quantify the amount of microleakage of a resin-based root canal filling. Methodology 50 roots of human permanent maxillary central incisors and mandibular premolars were instrumented and randomly divided into the positive (n=5) and negative (n=5) control groups and two experimental groups: Group GV, gutta-percha vertical compaction (n=20) and Group ES, the EndoRez single cone (n=20). The glucose filtration model was used to quantify the microleakage at intervals of 2, 4 and 8 weeks. Result The EndoRez group leaked significantly more than the gutta-percha group for all the time intervals tested (PDOI: 10.5353/th_b3955825 Subjects: Fillings (Dentistry) Dental materials

Download or read book An In vitro Comparison of the Microleakage of Realseal Resilon and Realseal Self etch Resilon Root Canal Obturation System written by Haris Iqbal and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation was to evaluate and compare microleakage of teeth obturated using either RealSeal/Resilon or RealSeal Self-Etch/Resilon systems. The goal was to determine whether a significant difference in microleakage exists between these two groups. To date, no study has been done comparing the microleakage of root canal systems obturated with using RealSeal/Resilon versus RealSeal SE/Resilon. Sixty-two human, single-rooted, anterior teeth were accessed and instrumented for non-surgical root canal therapy. Teeth were randomly assigned to two experimental groups of 27 teeth each. Group I consisted of teeth obturated with the RealSeal/Resilon system, whereas Group II consisted of teeth obturated with the RealSeal SE/Resilon system. In addition, two control groups containing four teeth each served as positive and negative controls, Group (+) and Group ( - ), respectively. The teeth were then evaluated for microleakage using a dual-chamber microleakage model. Visual turbidity in the lower chamber denoted microleakage within the experimental groups observed for 33 days. RealSeal SE Group II had a significantly higher proportion of samples than Real Seal Group I. Time to microleakage was also significantly lower in RealSeal SE Group II than in Real Seal Group I. No microleakage was observed in the negative control and microleakage was observed in all four samples in the positive control. To date, this is the first study comparing the microleakage of RealSeal/Resilon and RealSeal SE/Resilon systems. The higher microleakage associated with RealSeal SE is attributed to the higher pH of the self-etch (SE) sealer in comparison with the self-etch primer of RealSeal. The self-etching potential of the sealer system is particularly critical in areas inaccessible to calcium chelating agents such as EDTA in root canal systems. Further research needs to be done to corroborate the microleakage results from this study. The microbial leakage apparatus devised in this study, which used a selective growth medium with streptomycin, has also been validated by the results of the study. The bacterial leakage apparatus has been considered to be clinically relevant and acceptable by the Journal of Endodontics. Thus, the modified dual-chambered microleakage apparatus with a selective growth medium used in this research can be replicated easily in future microleakage studies.

Download or read book U S Army Medical Department Journal written by and published by . This book was released on 2010 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pathways of the Pulp written by Stephen Cohen and published by Mosby Elsevier Health Science. This book was released on 1994 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An In Vitro Study Assessing the Effect of Smear Layer on Root Canal Microleakage written by Mutasim Hassan Elnour and published by . This book was released on 2008 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coronal leakage is now recognized as an important cause of failure of root canal treatment. This pathway of leakage may be affected by the presence or absence of the smear layer that in turn may affect the close adaptation between the root canal filling material and the root canal walls. This may result in subsequent coronal leakage and failure of treatment. The aim of this study was to compare the sealing ability of AH Plus sealer to the canal wall in the presence and absence of the smear layer ...

Download or read book Quantification of Microleakage of a Resin based Root Canal Filling Material written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantification of Microleakage of a Resin based Root Canal Filling Material written by Hiu-wan Ko (Cora) and published by . This book was released on 2006 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apical Leakage of a New Root Canal Sealer written by Nathan E. Beam and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Apical Leakage of Different Endodontic Sealers written by Masoud A. Khoory and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main problems of dentists and endodontic for treatment of teeth in need for root canal therapy is the lack of perfect seal at the apical area to meet their requirements. The sealing properties of root canal filling materials is one of the most important factor that can influence apical seal. When filling the root canal system, the sealer plays an important role in reducing microleakage . A great variety of endodontic sealers are available commercially, and they are divided into groups according to their chemical composition such as zinc oxide eugenol sealers, epoxy resin sealers, and calcium hydroxide sealers. The aim of this research is to present an investigation regarding the in vitro comparison of apical leakage of RSA ( Roekoseal Automix ) and Roth 801 and AH26 sealers in lateral condensation technique using dye leakage method using new method for the leakage measurement.