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https://www.readbyqxmd.com/read/28650788/comparison-of-the-antimicrobial-efficacy-of-the-endovac-system-and-conventional-needle-irrigation-in-primary-molar-root-canals
#1
Burak Buldur, Arife Kapdan
PURPOSE: The purpose of this study was to compare the antimicrobial efficacy of the EndoVac system and conventional needle irrigation to eliminate E faecalis in primary molar root canals. STUDY DESIGN: 60 extracted human primary second molar roots were instrumented up to an apical size .04/35 and randomly divided into two groups; Group 1: conventional needle (n=30) and Group 2: EndoVac (n=30), and four subgroups (two experimental subgroups; (a) 2.5% sodium hypochlorite (NaOCl) + ethylenediaminetetraacetic acid (EDTA) (n=20), (b) ozonated water (OW) + EDTA (n=20), and control groups (c) 5...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28646693/antibacterial-effect-of-genetically-engineered-bacteriophage-%C3%AF-ef11-%C3%AF-fl1c-%C3%AE-36-p-nisa-on-dentin-infected-with-antibiotic-resistant-enterococcus-faecalis
#2
Justine Monnerat Tinoco, Nadia Liss, Hongming Zhang, Roni Nissan, Wanda Gordon, Eduardo Tinoco, Luciana Sassone, Roy Stevens
OBJECTIVE: Enterococcus faecalis is a gram-positive facultative anaerobic bacterium, which is present in 30-89% of teeth with postendodontic treatment failures. E. faecalis is capable of penetrating dentinal tubules and surviving as a monoculture after conventional endodontic therapy, indicating that it is resistant to commonly used endodontic disinfection protocols. Different E. faecalis strains have shown resistance to several antibiotics, and have been associated with both dental pathology and systemic infections...
June 12, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28644431/an-in-vitro-study-on-the-efficacy-of-removing-calcium-hydroxide-from-curved-root-canal-systems-in-root-canal-therapy
#3
Ying Wang, Li-Yang Guo, Hong-Zhi Fang, Wen-Ling Zou, Ying-Ming Yang, Yuan Gao, Hui Yang, Tao Hu
To compare the efficacy of various irrigants (citric acid, ethylenediaminetetraacetic acid (EDTA) and NaOCl) and techniques in removing Ca(OH)2 in two types of curved root canal systems, simulated root canals with specific curvatures were used to investigate the effects of different irrigants and instruments on Ca(OH)2 removal. The optimal methods were verified on extracted human teeth. Simulated root canals were assigned to one of two groups based on the irrigation solution: 10% citric acid or 2.5% NaOCl. Each group was divided into four subgroups according to the technique used to remove Ca(OH)2...
June 23, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28643935/efficacy-of-self-adjusting-file-xp-endo-finisher-and-passive-ultrasonic-irrigation-on-the-removal-of-calcium-hydroxide-paste-from-an-artificial-standardized-groove
#4
Anda Kfir, Nuphar Blau-Venezia, Tomer Goldberger, Itzhak Abramovitz, Ronald Wigler
The purpose of this study was to compare the effectiveness of self-adjusting file (SAF), XP-endo finisher (XP), passive ultrasonic irrigation (PUI) and conventional syringe and needle irrigation (SNI) in the removal of Ca(OH)2 from an artificial groove. Eighty mandibular incisors with single oval canals were prepared to size 40/0.04 and split longitudinally. A standardised groove was prepared in the apical third and filled with Ca(OH)2 . The root halves were reassembled and divided into two control groups (n = 4) and four experimental groups (n = 18) according to the removal methods used...
June 23, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28638557/continuous-apical-negative-pressure-ultrasonic-irrigation-canui-a-new-concept-for-activating-irrigants
#5
Pablo Castelo-Baz, Purificación Varela-Patiño, Manuel Ruíz-Piñón, Francesc Abella, Ramón Miguéns-Vila, Benjamín Martín-Biedma
BACKGROUND: Irrigation of the root canal system is an essential step in the endodontic treatment. The aim of this article is to introduce continuous apical negative-pressure ultrasonic irrigation (CANUI), a new irrigation concept, and compare the characteristics of this new technique with current devices for activating the irrigant. MATERIAL AND METHODS: CANUI is designed for cleaning and disinfecting the root canal system. The device consists of a tube inside another tube that allows the continuous ultrasonic exchange of fresh irrigant, as the irrigant is simultaneously aspirated apically...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28638547/push-out-bond-strength-of-different-endodontic-obturation-material-at-three-different-sites-in-vitro-study
#6
Pankaj Mishra, Anjna Sharma, Sunil Mishra, Manas Gupta
BACKGROUND: The key to success of any root canal therapy is adequate obturation of the prepared root canal space. Root canal sealers are not dimensionally stable and might dissolve partially over a period of time. The objective of this in vitro study is to evaluate the push-out bond strength to intraradicular dentin of two endodontic obturation materials. MATERIAL AND METHODS: Forty extracted single rooted permanent teeth were used. Canals orifice was explored, teeth were instrumented...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28635100/a-new-system-for-classifying-accessory-canal-morphology
#7
REVIEW
H M A Ahmed, P Neelakantan, P M H Dummer
Thorough knowledge of the anatomical complexities of the root canal system has a direct impact on the effectiveness of canal preparation and filling, and is an essential prerequisite for successful root canal treatment. A wide range of complex variations in root canal anatomy exists, including root canal configuration type, developmental anomalies and more minor canal morphology such as accessory canals and apical deltas. Accessory canals and apical deltas have been associated with pulp disease, primary canal infection, canal reinfection and post-treatment disease...
June 21, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28631551/apical-microleakage-in-root-canals-obturated-with-2-different-endodontic-sealer-systems-in-canine-teeth-of-dogs
#8
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/28627377/mikania-glomerata-sprengel-extract-and-its-major-compound-ent-kaurenoic-acid-display-activity-against-bacteria-present-in-endodontic-infections
#9
Dora Lúcia Carrara Moreti, Luís Fernando Leandro, Thaís da Silva Moraes, Monique Rodrigues Moreira, Rodrigo Cassio Sola Veneziani, Sergio Ricardo Ambrosio, Brenda Paula Figueiredo Almeida Gomes, Carlos Henrique Gomes Martins
The search for new, effective and safe antimicrobial compounds from plant sources has continued to play an important role in the maintenance of human health since ancient times. Such compounds can be used to help to eradicate microorganisms from the root canal system, preventing/healing periapical diseases. Mikania glomerata (Spreng.), commonly known as "guaco," is a native climbing plant from Brazil that displays a wide range of pharmacological properties. Many of its activities have been attributed to its phytochemical composition, which is mainly composed of diterpenes, such as ent-kaurenoic acid (KA)...
June 13, 2017: Anaerobe
https://www.readbyqxmd.com/read/28621288/photodvnamic-therapy-in-endodontics
#10
Zahed Mohammadi, Hamid Jafarzadeh, Sousan Shalavi, Jun-Ichiro Kinoshita
Commonly used irrigants do not always eradicate the entire microbial flora in infected root canals. Therefore, several other strategies, such as photodynamic therapy (PDT) have been developed. Photoactivated disinfection is based on the interaction of a photosensitive antibacterial agent and a light source. It uses a nontoxic dye named photosensitizer (PS) and low-intensity visible light. In oxygen presentation, these combine to produce some cytotoxic species. The PS molecules attach to bacteria membrane. Irradiation with a specific wavelength of the light may lead to the production of singlet oxygen, resulting in rupture of the microbial cell wall...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28621286/endodontic-management-of-dilacerated-maxillary-central-incisor-fused-to-a-supernumerary-tooth-using-cone-beam-computed-tomography-an-unusual-clinical-presentation
#11
Thilla S Vinothkumar, Deivanayagam Kandaswamy, Ganesh Arathi, Sathishkumar Ramkumar, Gnanasekaran Felsypremila
AIM: The purpose of this report is to present a case of endodontic management of a dilacerated maxillary central incisor fused to supernumerary tooth unusually appearing as a labial tubercle using cone beam computed tomography (CBCT) as a diagnostic aid. BACKGROUND: Anterior teeth are commonly encountered with aberrant anatomical variations in the crown, number of roots, and root canals. Fusion is an infrequent developmental abnormality in shape of the tooth caused by the union of two adjacent tooth germs...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28621279/comparative-evaluation-of-stress-developed-on-rotary-retreatment-instruments-during-retrieval-of-gutta-percha
#12
Dhanasekaran Sihivahanan, T Vinay Kumar Reddy, Anchu Rachel Thomas, Natarajan Senthilnathan, Murali Sivakumar, Sushmita Shivanna
AIM: The aim of the study is to compare the maximum stress distribution on the rotary retreatment instruments within the root canal at cervical, middle, and the apical one-third during retreatment of gutta-percha. MATERIALS AND METHODS: A human mandibular premolar was scanned, and three-dimensional geometry of the root was reconstructed using finite element analysis (FEA) software package (ANSYS). The basic model was kept unchanged; tooth models were created using the same dimensions and divided into two groups as follows: Group I: ProTaper Universal retreatment system and group II: Mtwo rotary retreatment system...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28621275/measure-and-compare-the-degree-of-root-canal-transportation-and-canal-centering-ability-of-twisted-protaper-and-conventional-stainless-steel-k-files-using-spiral-computed-tomography-an-in-vitro-study
#13
F Rejula, R Christalin, Waseem Ahmed, Shiji Dinakaran, Anupama S Gopinathan, Anulekh Babu
AIM: The aim of this study was to compare canal transportation and centering ability of Twisted files (TF) and ProTaper (PT) files with conventional stainless steel (SS) K files. MATERIALS AND METHODS: Thirty mandibular premolar teeth with root curvature of 25 to 35° were selected. The samples were randomly divided into three groups of 10 each according to the type of files used for instrumentation. Group I was instrumented using TF, group II with PT files according to the manufacturer's recommendations, and group III with samples prepared with pre-curved SS K files using a step-back technique...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28620977/2016-ase-undergraduate-essay-competition-candidate-information
#14
Alice Chen
The aim of this review is to discuss the role of medicaments and materials used in teeth undergoing root canal treatment and how they affect the overall prognosis of root canal treated teeth. Irrigants, medicaments and materials play a vital role in RCT. They reduce the overall microbial load within the root canal system, help reduce inter-appointment pain, and induce apexification during RCT of permanent teeth with immature apices. In addition, they also help create a hermetic coronal and periradicular seal to entomb any residual microorganisms within the canals and prevent future ingress of contaminants into the root canal system and subsequent reinfection...
June 15, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28620636/a-scanning-electron-microscopic-evaluation-of-the-effectiveness-of-etidronic-acid-smearclear-and-mtad-in-removing-the-intracanal-smear-layer
#15
Hemant Kumar Yadav, Rakesh Kumar Yadav, Anil Chandra, Aseem Prakash Tikku
STATEMENT OF THE PROBLEM: Root canal therapy should not simply be the extirpation of the pulp and widening of the canal. But one should also focus on how to completely remove the loosely-attached smear layer because it has adverse effects on the final outcome of the treatment. PURPOSE: This study compared the efficacy of Etidronic acid, SmearClear and MTAD to remove the smear layer created during instrumentation in different regions of the root canal. MATERIALS AND METHOD: Fifty single-rooted mandibular premolars were decoronated from the cementoenamel junction and instrumented using the ProTaper universal rotary file system along with copious irrigation by 1...
June 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28620615/component-release-and-mechanical-properties-of-endodontic-sealers-following-incorporation-of-antimicrobial-agents
#16
Elizabeta S Gjorgievska, John W Nicholson, Nichola J Coleman, Samantha Booth, Aleksandar Dimkov, Andrew Hurt
Root canal sealers with antimicrobial activity are highly beneficial; therefore, their antimicrobial properties could be improved by incorporation of antimicrobial agents. In the present study, the release of the quaternary ammonium compounds from endodontic sealers admixed with either benzalkonium chloride (BC) or cetylpyridinium chloride (CPC) at loadings of 2% wt was monitored. The effect of these additives on the compressive strengths and their release from the sealers was determined after 1 and 4 weeks...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28619615/evaluation-of-antimicrobial-activity-of-association-of-chlorhexidine-to-photosensitizer-used-in-photodynamic-therapy-in-root-canals-infected-by-enterococcus-faecalis
#17
Matheus Albino Souza, Guilherme Lima, Bianca Pazinatto, Karolina Frick Bischoff, Huriel Scartazzini Palhano, Doglas Cecchin
INTRODUCTION: The aim of the present study was to evaluate, in vitro, the influence of the addition of chlorhexidine to photosensitiser in the antimicrobial activity of photodynamic therapy in root canals infected by Enterococcus faecalis. METHODS: the root canals of 50 single-rooted human extracted teeth were enlarged up to a file F3 of Pro-Taper system, autoclaved, inoculated with Enterococcus faecalis and incubated for 14 days. The samples were divided into five groups (n=10) according to the protocol of decontamination: G1 (control group) - no procedure was performed; G2-photosensitiser (0...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28608053/apical-extrusion-of-debris-during-the-preparation-of-oval-root-canals-a-comparative-study-between-a-full-sequence-saf-system-and-a-rotary-file-system-supplemented-by-xp-endo-finisher-file
#18
Anda Kfir, Rotem Moza-Levi, Moran Herteanu, Amir Weissman, Ronald Wigler
OBJECTIVES: The purpose of this study was to assess the amount of apically extruded debris during the preparation of oval canals with either a rotary file system supplemented by the XP-endo Finisher file or a full-sequence self-adjusting file (SAF) system. MATERIALS AND METHODS: Sixty mandibular incisors were randomly assigned to two groups: group A: stage 1-glide path preparation with Pre-SAF instruments. Stage 2-cleaning and shaping with SAF. Group B: stage 1-glide path preparation with ProGlider file...
June 12, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28606669/effectiveness-in-the-removal-of-endotoxins-and-microbiological-profile-in-primary-endodontic-infections-using-3-different-instrumentation-systems-a-randomized-clinical-study
#19
Daiana Cavalli, Cássia Cestari Toia, Esteban Isai Flores Orozco, Rayana Duarte Khoury, Flávia Goulart da Rosa Cardoso, Marcelo Corrêa Alves, Cláudio Antônio Talge Carvalho, Marcia Carneiro Valera
INTRODUCTION: This clinical study was conducted to correlate the microbiological profile and levels of endotoxins found in primary endodontic infection with the presence of clinical features and to evaluate the removal of microorganisms and endotoxins using rotary, reciprocating, and hybrid systems for biomechanical preparation. METHODS: Thirty single root canals with primary endodontic infection were evaluated with signs and symptoms and were randomly divided into 3 groups according to the instrumentation system used (n = 10) as follows: rotary Mtwo instruments (VDW, Munich, Germany) with 8 files, the reciprocating Reciproc system (VDW) with a single file, and Genius hybrid instruments with 3 files (1 rotary and 2 reciprocating files) with irrigation using 24 mL 2...
June 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28606667/a-comparative-study-of-protaper-universal-and-protaper-next-used-by-undergraduate-students-to-prepare-root-canals
#20
Amin A H Alemam, Paul M H Dummer, Damian J J Farnell
INTRODUCTION: The purpose of this study was to determine whether final-year undergraduate dental students achieved better shaping outcomes using the new ProTaper Next (PTN; Dentsply Sirona, Ballaigues, Switzerland) system to prepare root canals for the first time compared with the existing ProTaper Universal (PTU, Dentsply Sirona) system on which they had trained. A secondary aim was to explore the attitudes and preferences of the students toward both systems. METHODS: Forty students prepared 1 simulated S-shaped canal using PTN and another with PTU...
June 9, 2017: Journal of Endodontics
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