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https://www.readbyqxmd.com/read/28925588/evaluation-of-the-effect-of-four-final-irrigation-protocols-on-root-canal-dentin-components-by-polarized-light-microscopy-and-scanning-electron-microscopy
#1
Flávia Emi Razera Baldasso, Luana Roleto Cardoso, Vinicius Duval da Silva, Renata Dornelles Morgental, Patrícia Maria Poli Kopper
The present study aimed to evaluate the effects of four endodontic chelating agents, followed by 2.5% sodium hypochlorite (NaOCl), as final irrigation regimens on organic and inorganic components of human root dentin. Sixty mandibular incisors were prepared and randomly divided into six groups (n = 10): QMiX, 1% peracetic acid (PA), 17% EDTA, 10% citric acid (CA), 2.5% NaOCl (solution control) and distilled water (DW-negative control). After irrigation with the chelating agents, a final flush was performed with 2...
September 19, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28922597/core-shell-silver-nanoparticles-in-endodontic-disinfection-solutions-enable-long-term-antimicrobial-effect-on-oral-biofilms
#2
Elif Ertem Bekdemir, Beatrice Gutt, Flavia Zuber, Sergio Allegri, Benjamin Le Ouay, Selma Mefti, Kitty Formentin, Francesco Stellacci, Qun Ren
To achieve effective long-term disinfection of the root canals, we synthesized core-shell silver nanoparticles (AgNPs@SiO2) and used them to develop two irrigation solutions containing sodium phytate (SP) and ethylene glycol-bis(β-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA), respectively. Ex vivo studies with instrumented root canals revealed that the developed irrigation solutions can effectively remove the smear layer from the dentinal surfaces. Further in vitro experiments with single and multi-species biofilms demonstrated for the first time that AgNPs@SiO2 based irrigation solutions possess excellent antimicrobial activities for at least 7 days, whereas the bare AgNPs lose the activity almost immediately and do not show any antibacterial activity after 2 days...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28920112/implant-and-endodontic-treatment-selection-are-influenced-by-patients-demographic-characteristics-insurance-status-and-medical-history-a-retrospective-cohort-study
#3
Georgios S Chatzopoulos, Larry F Wolff
OBJECTIVE: The aim of this study was to examine any potential association between demographic characteristics, socioeconomic status, dental insurance, and medical and tobacco history between patients that received endodontic treatment or extraction and implant treatment in a university dental clinic. METHOD AND MATERIALS: Dental charts of patients who received root canal treatment and implant therapy were retrieved from the University of Minnesota School of Dentistry records...
2017: Quintessence International
https://www.readbyqxmd.com/read/28918912/evaluation-of-the-root-and-canal-systems-of%C3%A2-maxillary-molars-in-taiwanese-patients-a%C3%A2-cone%C3%A2-beam-computed-tomography-study
#4
Yu-Hua Lin, Hsiu-Na Lin, Chien-Chih Chen, May-Show Chen
BACKGROUND: This study evaluated variations in root canal configuration in the maxillary permanent molars of Taiwanese patients by analyzing patients' cone beam computed tomography (CBCT) images. Comparisons were made among these configurations and those previously reported. This information may serve as a basis for improving the success rate of endodontic treatment. METHODS: The root canal systems of 114 Taiwanese patients with bilateral maxillary first or second molars were examined using CBCT images...
August 2017: Biomedical Journal
https://www.readbyqxmd.com/read/28916389/removal-and-killing-of-multispecies-endodontic-biofilms-by-n-acetylcysteine
#5
Young-Suk Choi, Cheul Kim, Ji-Hoi Moon, Jin-Yong Lee
Removal of bacterial biofilm from the root canal system is essential for the management of endodontic disease. Here we evaluated the antibacterial effect of N-acetylcysteine (NAC), a potent antioxidant and mucolytic agent, against mature multispecies endodontic biofilms consisting of Actinomyces naeslundii, Lactobacillus salivarius, Streptococcus mutans and Enterococcus faecalis on sterile human dentin blocks. The biofilms were exposed to NAC (25, 50 and 100mg/mL), saturated calcium hydroxide or 2% chlorhexidine solution for 7 days, then examined by scanning electron microscopy...
September 2, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28914253/mineral-trioxide-aggregate-induced-apical-closure-in-nonvital-immature-permanent-maxillary-incisor
#6
Meenu Bhola, Virinder Goyal, Parimala Tyagi, Tarun Kumar
Treatment of nonvital immature permanent teeth with calcium hydroxide is associated with few difficulties such as weakened tooth root, root canal reinfection, and long treatment time. Mineral trioxide aggregate (MTA) apical plug method is an alternative treatment method for open apices and has gained popularity in the recent times. This case report describes the management of a late-referral case of periapically involved, traumatized immature permanent incisor by endodontic treatment and the use of MTA apical plug...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28904947/sodium-hypochlorite-irrigation-and-its-effect-on-bond-strength-to-dentin
#7
REVIEW
Tariq S Abuhaimed, Ensanya A Abou Neel
Effective shaping and cleaning of root canals are essential for the success of endodontic treatment. Due to the complex anatomy of root canal spaces, the use of various instrumentation techniques alone is not effective in producing bacteria-free root canal spaces. Irrigation, disinfectants, rinses, and intervisit medications are used in conjunction with the mechanical instrumentation to ensure the success of endodontic treatment. Sodium hypochlorite (NaOCl), a halogenated compound, is routinely used to irrigate the root canal during endodontic treatments...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28894386/oxidative-stress-in-patients-with-endodontic-pathologies
#8
Veiko Vengerfeldt, Reet Mändar, Mare Saag, Anneli Piir, Tiiu Kullisaar
BACKGROUND: Apical periodontitis (AP) is an inflammatory disease affecting periradicular tissues. It is a widespread condition but its etiopathogenetic mechanisms have not been completely elucidated and the current treatment options are not always successful. PURPOSE: To compare oxidative stress (OxS) levels in the saliva and the endodontium (root canal [RC] contents) in patients with different endodontic pathologies and in endodontically healthy subjects. PATIENTS AND METHODS: The study group of this comparison study included 22 subjects with primary chronic apical periodontitis (pCAP), 26 with posttreatment or secondary chronic apical periodontitis (sCAP), eight with acute periapical abscess, 13 with irreversible pulpitis, and 17 healthy controls...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28893051/permanent-maxillary-central-incisor-with-dilacerated-crown-and-root-and-c-shaped-root-canal
#9
Vikas Allwani, Mansing Pawar, Ajinkya Pawar, Sayed Abrar, Sangeeta Ambhore
Dilaceration is a rare disturbance in traumatised permanent teeth, which constitutes about 3% of the injuries to developing teeth. It usually occurs as a result of trauma to the deciduous predecessors and results in non axial displacement of the already formed hard tissue portion of the developing crown. Endodontic treatment of such teeth presents a challenge to clinicians, and careful management is required to successfully address the root canal anatomy and other possible variations. The C-shaped canal configuration is most frequently seen in mandibular second molars, but this variation may also occur in mandibular first molars, mandibular third molars, maxillary molars, mandibular first premolars, and even in maxillary lateral incisors, with rare reports of such variations occurring in the maxillary central incisors...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28890612/comparative-evaluation-of-sealing-ability-water-absorption-and-solubility-of-three-temporary-restorative-materials-an-in-vitro-study
#10
A R Prabhakar, N Shantha Rani, Saraswathi V Naik
BACKGROUND: The quality of the coronal seal of root canal filling material is important for periapical health. Absorption of water or saliva by the temporary restorative materials leads to dimensional changes, loss of retention, staining and breaking in margin contours. Hence this study was carried out to evaluate and compare the sealing properties, water absorption and solubility of IRM (intermediate restorative material), Cavit G and GC Caviton. STUDY DESIGN: Experimental, in vitro intergroup randomized control trial...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28887850/wear-profile-of-canal-wall-surfaces-and-bond-strength-of-endodontic-sealers-after-in-situ-acid-challenge
#11
R Silva-Neto, M Sousa-Neto, J Pecora, R Palma-Dibb, A Souza-Gabriel
AIM: To evaluate the wear of root wall surfaces, the bond strength of sealers to dentine and the demineralization around filling material after the canals were exposed to acid challenge. METHODOLOGY: Eighty-seven roots of mandibular incisors were selected. Thirty-two were used in the bond strength in vitro study (n=8) and 55 in the in situ study (n=11). Root canals were prepared biomechanically and then filled with gutta-percha and AH Plus, MTA Fillapex, Sealapex or Endofill...
September 8, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28884743/three-dimensional-analysis-of-the-physiological-foramen-geometry-of-maxillary-and-mandibular-molars-by-means-of-micro-ct
#12
Thomas Gerhard Wolf, Frank Paqué, Michael Sven Patyna, Brita Willershausen, Benjamín Briseño-Marroquín
The aim of this study was to investigate the physiological foramen diameter, shape and distance between physiological and anatomical apex of maxillary and mandibular first and second molars. Accurate knowledge of the physiological foramina morphology; thus, inherent mechanical shaping technical hindrances, is decisive when taking the corresponding root canal final preparation decision. The morphological dimensions of a total of 1727 physiological foramina were investigated by means of micro-computed tomography...
September 8, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28881478/properties-of-bioroot-rcs-a-tricalcium-silicate-endodontic-sealer-modified-with-povidone-and-polycarboxylate
#13
F Siboni, P Taddei, F Zamparini, C Prati, M G Gandolfi
AIM: To evaluate the chemical and physical properties of a tricalcium silicate root canal sealer containing povidone and polycarboxylate (BioRoot RCS), a calcium silicate MTA based sealer containing a salicylate resin (MTA Fillapex), a traditional eugenol-containing sealer (Pulp Canal Sealer) and an epoxy resin-based root canal sealer (AH Plus). METHODOLOGY: Calcium release, pH, setting time, water sorption, (volume of open pores, volume of impervious portion, apparent porosity) porosity and weight loss were measured...
September 7, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28881396/guidelines-on-radiographic-imaging-as-part-of-root-canal-treatment-a-systematic-review-with-a-focus-on-review-imaging-after-treatment
#14
REVIEW
S A Mahasneh, K Horner, J Cunliffe, S Al-Salehi, A Sengupta, A AlHadidi
AIM: To identify guidelines on endodontics which make recommendations relating to post-root canal treatment radiological review imaging, to make an objective assessment of their quality using the AGREE tool and to examine the evidence cited in support of their recommendations. METHODOLOGY: The primary sources to identify published guidelines were MEDLINE (Ovid(®) ) and EMBASE. The search aim was to identify guidelines pertaining to the post-root canal treatment follow-up recommendations published from 1946 with the final search date being 26 June 2016...
September 7, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28877288/effect-of-rewetting-solutions-on-micropush-out-dentin-bond-strength-of-new-bioceramic-endodontic-material
#15
Giovana Cunha Gritti, Salma Ivanna Araújo Cavalcante, Etevaldo Matos Maia-Filho, José Bauer, Matheus Coêlho Bandéca, Giulio Gavini, Ceci Nunes Carvalho
To evaluate the influence of rewetting solutions on bond strength to root dentin of conventional gutta-percha (GP) or niobium phosphate glass-based gutta-percha (GNb) associated with a bioceramic sealer. The root canals of 80 human mandibular premolars were prepared using nickel-titanium instruments and irrigation with sodium hypochlorite and EDTA. The teeth were randomly divided into four groups according to the gutta-percha used: GNb or GP associated with EndoSequence BC Sealer (BC) and the solution for rewetting dentin before filling (distilled water; phosphate buffer saline solution - PBS; simulated body fluid - SBF; or no solution)...
August 31, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28874653/shaping-of-the-root-canal-system-a-multistep-technique
#16
Livio Gallottini
AIM: The aim of this scientific work is to illustrate the technique of shaping the root canal system using the multistep technique. BACKGROUND: Over time, various endodontic instrumentation techniques have been put forward, from the "step-back" technique (apical-coronal) to the "crown-down" technique (coronal-apical), the "double-flared" technique, and the most recent "single-length" technique. TECHNIQUE: The multistep technique involves six steps, one of the main objectives of these being the safety of the use of mechanical instruments with a reduction in the risk that they fracture...
September 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28874649/quantitative-assessment-of-apically-extruded-bacteria-using-different-instrumentation-techniques-and-preparation-taper
#17
Harsh Priyank, Vinisha Pandey, Achla Sethi, Vinay J Sharma, Harleen Bali, Ramandeep S Punia
BACKGROUND: Cleaning and shaping of the pulp canal is one of the most important steps of endodontic therapy. Serious complications occur by the apical extrusion of bacteria during the instrumentation procedures. Both crown-down (CD) and full-length linear motion (FM) techniques are routinely used as a component of taper rotary instrument procedures for achievement of thorough cleaning and shaping of the pulp canal space. Hence, we aimed for this study to assess the change in the amount of apically extruded bacteria using CD and FM instrumentation techniques produced by differences in taper between the instruments used during biomechanical preparation of root canals...
September 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28874643/evaluation-of-apical-vapor-lock-formation-and-comparative-evaluation-of-its-elimination-using-three-different-techniques-an-in-vitro-study
#18
Anand Agarwal, Rahul B Deore, Kavitarani Rudagi, Zinnie Nanda, Mirza Osman Baig, Md Adil Fareez
AIM: The aim of this study was (i) to evaluate the formation of air bubbles in the apical region of root canal (apical vapor lock) during syringe irrigation, using cone beam computed tomography (CBCT) and (ii) comparative evaluation of the elimination of an established vapor lock by EndoActivator, ultrasonics, and manual dynamic agitation (MDA), using CBCT. MATERIALS AND METHODS: A total of 60 extracted human single-rooted teeth were equally divided into three groups of 20 teeth each...
September 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28867453/the-effect-of-indocyanine-green-loaded-on-a-novel-nano-graphene-oxide-for-high-performance-of-photodynamic-therapy-against-enterococcus-faecalis
#19
Tayebeh Akbari, Maryam Pourhajibagher, Farzaneh Hosseini, Nasim Chiniforush, Elham Gholibegloo, Mehdi Khoobi, Sima Shahabi, Abbas Bahador
BACKGROUND: Recently developed photodynamic therapy (PDT) has gained attention for achieving effective root canal disinfection. Using an optimized nontoxic photosensitizer (PS), such as indocyanine green (ICG), is an imperative part of this technique. Therefore, the objective of the current study was to improve ICG photodynamic properties through incorporation of ICG into nano-graphene oxide (NGO) in order to produce NGO-ICG as a new PS and also to assess the antimicrobial effects of NGO-ICG against Enterococcus faecalis after photodynamic therapy...
August 31, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28862763/technical-quality-of-root-canal-treatment-performed-by-undergraduate-students-using-hand-instrumentation-a-meta-analysis
#20
REVIEW
D M Ribeiro, J C Réus, W T Felippe, C Pachêco-Pereira, K L Dutra, J N Santos, A L Porporatti, G De Luca Canto
The technical quality of root canal treatment (RCT) may impact on the outcome. The quality of education received during undergraduate school may be linked to the quality of treatment provided in general dental practice. In this context, the aim of this systematic-review is to answer the following focused questions: 1) What is the frequency of acceptable technical quality of root fillings, assessed radiographically, performed by undergraduate students? 2) What are the most common errors assessed radiographically and reported in these treatments? For this purpose, articles that evaluated the quality of root fillings performed by undergraduate students were selected...
September 1, 2017: International Endodontic Journal
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