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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
#1
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/28644564/methacrylate-based-root-canal-sealer-containing-chlorexidine-and-%C3%AE-tricalcium-phosphate
#2
Fabrício Mezzomo Collares, Vicente Castelo Branco Leitune, Fernando Freitas Portella, Paula Dapper Santos, Gabriela de Souza Balbinot, Luís Alberto Dos Santos, Clarissa Cavalcanti Fatturi Parolo, Susana Maria Werner Samuel
The aim of this study was to develop and to characterize a methacrylate-based root canal sealer containing chlorhexidine (CHX) and α-tricalcium phosphate (α-TCP). Experimental dual cure methacrylate-based sealer was produced containing 0, 2.5, or 5 wt% of CHX and 0, 25, or 50 wt% of α-TCP. Experimental sealers were evaluated based on flow, film thickness, radiopacity, degree of conversion (DC), degradation in water, pH and antibacterial activity. Flow ranged from 15.09 ± 0.11 to 17.47 ± 0.42 mm...
June 23, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28644527/an-audit-on-technical-quality-of-root-fillings-performed-by-undergraduate-students
#3
W Fong, O Heidarifar, S Killough, M Lappin, I A El Karim
AIM: To evaluate radiographically the technical quality of root fillings performed by undergraduate dental students and to assess whether students were exposed to an appropriate endodontic case mix during their clinical training. METHODOLOGY: A retrospective audit was undertaken evaluating the clinical records of patients who underwent endodontic procedures during the period from September 2015 to June 2016 in the Dental School at Queen's University Belfast, UK...
June 23, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28643416/influence-of-academic-training-in-endodontics-and-implantology-on-decision-making-in-undergraduate-students
#4
Kenneth Pineda, Rufino Bueno, Carlos Alvarado, Francesc Abella, Miguel Roig, Fernando Duran-Sindreu
PURPOSE: To evaluate the effect of academic training on decision-making in a group of undergraduates who have undergone training in endodontics and implantology. BASIC PROCEDURES: A single group of undergraduate dentistry students (n = 65) was given a survey consisting of 15 endodontic cases. Each case included periapical radiographs and clinical photographs. Students were asked to select one of the eight proposed treatments. In their 4th year, the students first responded to the survey after completing endodontics...
June 23, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28643401/novel-navigation-technique-for-the-endodontic-treatment-of-a-molar-with-pulp-canal-calcification-and-apical-pathology
#5
Xilin Shi, Shiyong Zhao, Weidong Wang, Qianzhou Jiang, Xuechao Yang
Apical periodontitis, the inflammation of periapical tissue, commonly requires root canal treatment to achieve apical healing. However, if it is accompanied by pulp canal calcification, the treatment becomes complicated, and locating the root canal can be challenging. This case report describes a novel approach for treating a molar with pulp canal calcification and apical pathology. Due to the risk of perforation during treatment, a digitally printed template was used to assist in accurately locating the root canal...
June 23, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28642925/the-effect-of-gelatinase-production-of-enterococcus-faecalis-on-adhesion-to-dentin-after-irrigation-with-various-endodontic-irrigants
#6
Mehmet Burak Guneser, Ayce Unverdi Eldeniz
Objectives: The aim of this study was to evaluate whether the gelatinase production ability of Enterococcus faecalis provides any advantage on adhesion of this bacterium to dentin treated with various irrigants and their combinations. Materials and methods: Standardized dentin discs were randomly divided into five groups (n = 20): group 1: 2.5% sodium hypochlorite (NaOCl), group 2: 2% chlorhexidine (CHX), group 3: NaOCl + Saline + CHX, group 4: NaOCl + EDTA + NaOCl, group 5: QMix. After incubation of dentin discs with irrigants, each group was divided into two subgroups (n = 10) according to the bacterial strains used; a gelatinase-producing and a gelatinase-deficient strain of E...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642911/a-retrospective-multicenter-study-comparing-metal-ceramic-and-composite-single-crowns-performed-in-public-general-dentistry-5-year-results
#7
Jennie Overmeer, Birger Narby, Lars Hjalmarsson, Kristina Arnrup, Alf Eliasson
Objective The aim of this study was to evaluate and compare the 5-year survival and complication rate of metal-ceramic (MC) and composite single crowns performed within Public Dental Service, general dentistry, in three Swedish counties and with patients' gender, tooth position, root canal treatment and the presence of a post-and-core taken into account. Methods Data were collected from dental records of 600 patients who had received either an MC (n = 300) or a composite (n = 300) crown on a premolar or molar tooth in the year 2005 and where 5 years of follow-up data were available...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642563/root-canal-treatment-outcomes-not-affected-by-increasing-age-of-patient
#8
Y Jo Wong
Data sourcesMedline, Cochrane CENTRAL databases; most recent two years of seven journals: (Acta Odontologica Scandinavica; Community Dentistry and Oral Epidemiology; Gerodontology; International Endodontic Journal; Journal of Endodontics; Journal of Oral Rehabilitation; and Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology).Study selectionTooth-based longitudinal prospective and retrospective studies, published in English from January 1950 to August 2013, assessing outcomes of NSRCT in adults with permanent teeth...
June 23, 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28642058/ex-vivo-investigation-on-the-postoperative-integrity-of-the-apical-constriction-after-the-sole-use-of-electronic-working-length-determination
#9
Michael Wolgin, Markus J Grundmann, Jörg P Tchorz, Wilhelm Frank, Andrej M Kielbassa
AIM: The present study investigated the accuracy of root canal preparation with regard to the integrity of the apical constriction (AC) using two different working length determination approaches: (1) the electronic method of working length determination (EWLD), and (2) the radiologic "gold standard" method (GS). METHODOLOGY: Simulation models were constructed by arranging extracted human teeth by means of silicon bolstered gingiva masks, along with a conductive medium (alginate)...
June 19, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28638561/importance-and-methodologies-of-endodontic-microleakage-studies-a-systematic-review
#10
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/28638559/comparative-evaluation-of-anti-microbial-effects-of-triple-antibiotic-paste-and-amox-and-its-derivatives-against-e-faecalis-an-in-vitro-study
#11
Manjeet Kaur, Shrikant Kendre, Parmod Gupta, Navneet Singh, Harsimran Sethi, Neha Gupta, Rushil Acharya
BACKGROUND: Enterococcus faecalis is a microorganism commonly detected in asymptomatic, persistent endodontic infections. Triple antibiotic paste has stood the test of time as a proven antibiotic combination against E. Faecalis. However, problems with this include staining of teeth and standardization of the preparation. Thus, the search for better alternatives and better preparation techniques is still on. AIM: To observe the potential of combinations [(Amoxicillin+ Metronidazole, Amoxicillin Clavulanic Acid + Metronidazole; Amoxicillin and Cloxacillin + Metronidazole)] over Triple Antibiotic Paste...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28638557/continuous-apical-negative-pressure-ultrasonic-irrigation-canui-a-new-concept-for-activating-irrigants
#12
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
#13
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
#14
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
#15
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/28629781/position-paper-for-the-evaluation-and-management-of-oral-status-in-patients-with-valvular-disease-groupe-de-travail-valvulopathies-de-la-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-cardiologie-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-chirurgie-orale-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-parodontologie-et-d-implantologie
#16
REVIEW
Sarah Millot, Philippe Lesclous, Marie-Laure Colombier, Loredana Radoi, Clément Messeca, Mathieu Ballanger, Jean-Luc Charrier, Philippe Tramba, Stéphane Simon, Alain Berrebi, Fabien Doguet, Emmanuel Lansac, Christophe Tribouilloy, Gilbert Habib, Xavier Duval, Bernard Iung
Oral health is of particular importance in patients with heart valve diseases because of the risk of infective endocarditis. Recommendations for antibiotic prophylaxis before dental procedures have been restricted, but the modalities of oral evaluation and dental care are not detailed in guidelines. Therefore, a multidisciplinary working group reviewed the literature to propose detailed approaches for the evaluation and management of buccodental status in patients with valvular disease. Simple questions asked by a non-dental specialist may draw attention to buccodental diseases...
June 16, 2017: Archives of Cardiovascular Diseases
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
#17
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/28626288/assessment-of-radicular-dentin-permeability-after-irradiation-with-co2-laser-and-endodontic-irrigation-treatments-with-thermal-imaging
#18
Heajin Cho, Robert C Lee, Kenneth H Chan, Daniel Fried
Previous studies have demonstrated that the permeability changes due to the surface modification of dentin can be quantified via thermal imaging during dehydration. The CO2 laser has been shown to remove the smear layer and disinfect root canals. Moreover, thermal modification via CO2 laser irradiation can be used to convert dentin into a highly mineralized enamel-like mineral. The purpose of this study is to evaluate the radicular dentin surface modification after CO2 laser irradiation by measuring the permeability with thermal imaging...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28621288/photodvnamic-therapy-in-endodontics
#19
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
#20
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
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