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https://www.readbyqxmd.com/read/29330841/delayed-replantation-of-an-avulsed-immature-permanent-incisor-and-apexification-using-a-novel-fast-setting-calcium-silicate-cement-containing-fluoride-a-3-year-follow-up-case-report
#1
A Vafaei, B Ranjkesh, L Erfanparast, H Løvschall
BACKGROUND: Traumatic tooth avulsion requires an urgent intervention to replant the tooth. Prolonged post-injury dry extra-oral conditions worsen the prognosis and increase the risk of root resorption. Fluoride has the potential to delay replacement resorption. Calcium silicate cements (CSC) are used to seal the root canal system and to stimulate periapical regeneration in immature open apex teeth (apexification). This report suggests the application of a novel fast-setting CSC with fluoride for apexification in an attempt to hinder root resorption...
January 12, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29329675/root-canal-retreatment-with-thermafil-as-an-obturator-seems-to-have-acceptable-survival-after-5-years
#2
Romina Brignardello-Petersen
No abstract text is available yet for this article.
January 4, 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29327500/multiplex-polymerase-chain-reaction-detection-of-selected-bacterial-species-from-symptomatic-and-asymptomatic-non-vital-teeth-with-primary-endodontic-infections
#3
Smita Pattanshetty, Vijayalakshmi S Kotrashetti, Kishore Bhat, Ramakant S Nayak, Pradeep Somannavar, Madhu Pujar
AIM: The aim of the present study was to investigate the presence of selective anaerobic microorganisms in primary root canal infections of symptomatic and asymptomatic non-vital teeth with periapical pathosis using multiplex polymerase chain reaction. METHODS: A total of 100 root canal samples (50 from symptomatic and 50 from asymptomatic teeth) were obtained from patients with primary endodontic infections. DNA extracted from the samples was amplified by using specific primers for the 16S rRNA gene of each bacterium, and semiquantification was done to analyze the prevalence of microorganisms and their correlation to clinical features...
January 11, 2018: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/29327470/investigation-of-the-effect-of-rapid-and-slow-external-ph-increases-on-enterococcus-faecalis-biofilm-grown-on-dentine
#4
Mark Stenhouse, Peter Zilm, Jithendra Ratnayake, Peter Cathro
BACKGROUND: Calcium hydroxide is a common endodontic medicament and has an anti-microbial effect by increasing the localized pH within the root canal. However, Enterococcus faecalis has shown some resistance to calcium hydroxide. METHOD: A flow cell apparatus was used to grow an E. faecalis biofilm on dentine discs. Following 4 weeks growth in Todd Hewitt Broth, flow cells were exposed to either a rapid or slow increase to pH 11.5 or 12.5. Cellular viability was determined using serial plating and the number of colony forming units was normalised against the cellular protein content...
January 11, 2018: Australian Dental Journal
https://www.readbyqxmd.com/read/29327088/amplification-of-pressure-waves-in-laser-assisted-endodontics-with-synchronized-delivery-of-er-yag-laser-pulses
#5
Nejc Lukač, Matija Jezeršek
When attempting to clean surfaces of dental root canals with laser-induced cavitation bubbles, the resulting cavitation oscillations are significantly prolonged due to friction on the cavity walls and other factors. Consequently, the collapses are less intense and the shock waves that are usually emitted following a bubble's collapse are diminished or not present at all. A new technique of synchronized laser-pulse delivery intended to enhance the emission of shock waves from collapsed bubbles in fluid-filled endodontic canals is reported...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29326515/scanning-electron-microscopic-evaluation-of-efficacy-of-17-ethylenediaminetetraacetic-acid-and-chitosan-for-smear-layer-removal-with-ultrasonics-an-in-vitro-study
#6
Aradhana Babu Kamble, Sathish Abraham, Deepak Dadarao Kakde, C Shashidhar, Disha Lalit Mehta
Introduction: The main aim of root canal treatment is cleaning, shaping and then obturating three dimensionally to prevent reinfection. This includes chemicomechanical cleansing by instrumentation and the use of irrigating solutions. Therefore, the purpose of this study was to compare the smear layer removal from root canal dentine subjected to two root canal irrigants, 17% EDTA and 0.2% Chitosan, a new irrigant using Scanning Electron Microscope. Methodology: 40 single rooted premolars were decoronated followed by instrumentation with I Race files and intermediate irrigation with 3% sodium hypochlorite and activation with ultrasonics...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326513/an-in-vitro-comparison-of-pushout-bond-strength-of-resilon-with-metaseal-and-ah-plus-sealers
#7
Priyanka Sarangi, Rashmirekha Mallick, Sukanta Kumar Satapathy, Gaurav Sharma, Fathima Kouser, Satyajit Mohapatra
Aim: The aim of this study is to evaluate and compare the pushout bond strengths of Resilon with two different sealers: Resilon/MetaSEAL (methacrylate based) and Resilon/AH Plus (an epoxy resin-based sealer). Materials and Methods: Forty single canal anterior teeth were decoronated at cementoenamel junction and standardized to 10 ± 1 mm length. Working length was determined followed by biomechanical preparation. Then, the specimens were randomly assigned into two groups of 20 teeth each based on the sealer used with Resilon...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326509/a-radiographic-study-of-the-association-between-apical-periodontitis-and-technical-quality-of-intraradicular-posts-and-root-canal-fillings-a-cross-sectional-study-in-qassim-region-saudi-arabia
#8
Ra'fat Ibrahim Farah, Abdulrahman Sulaiman Aldakhili, Ayoub Sulaiman Alnasser
Objectives: This study evaluates the association between the apical periodontitis (AP) and quality of intraradicular posts and the quality of root fillings assessed radiographically in Qassim region, Saudi Arabia. Materials and Methods: Digital periapical radiographs of 327 teeth with post-retained restoration were retrieved randomly from the Qassim University screening clinic's digital archives and evaluated. The quality of the intraradicular post and root filling was evaluated according to the optimum criteria...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326499/in-search-of-a-novel-substitute-clinical-and-radiological-success-of-lesion-sterilization-and-tissue-repair-with-modified-3mix-mp-antibiotic-paste-and-conventional-pulpectomy-for-primary-molars-with-pulp-involvement-with-18-months-follow-up
#9
Divya Doneria, Seema Thakur, Parul Singhal, Deepak Chauhan, Karunakar Keshav, Anika Uppal
Objectives: The aim of this study was to evaluate the clinical and radiographic success of zinc oxide (ZnO)-ozonated oil, modified 3Mix antibiotic paste, and vitapex in the treatment of primary molars requiring pulpectomy. Methods: Sixty-four primary molars of forty-three healthy children aged between 4 and 8 years with primary molars requiring root canal procedure were treated with ZnO-ozonated oil, modified 3Mix-MP antibiotic paste, and vitapex. Clinical follow up was done at 1, 6,12 months and 18 months while radiographical follow-up was done at 6,12 and 18 months, respectively...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29324319/dental-age-estimation-employing-cbct-scans-enhanced-with-mimics-software-comparison-of-two-different-approaches-using-pulp-tooth-volumetric-analysis
#10
Muhammad Khan Asif, Phrabhakaran Nambiar, Shani Ann Mani, Norliza Binti Ibrahim, Iqra Muhammad Khan, Prema Sukumaran
The methods of dental age estimation and identification of unknown deceased individuals are evolving with the introduction of advanced innovative imaging technologies in forensic investigations. However, assessing small structures like root canal volumes can be challenging in spite of using highly advanced technology. The aim of the study was to investigate which amongst the two methods of volumetric analysis of maxillary central incisors displayed higher strength of correlation between chronological age and pulp/tooth volume ratio for Malaysian adults...
January 4, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29313911/spinal-cord-injury-arising-in-anaesthesia-practice
#11
REVIEW
D W Hewson, N M Bedforth, J G Hardman
Spinal cord injury arising during anaesthetic practice is a rare event, but one that carries a significant burden in terms of morbidity and mortality. In this article, we will review the pathophysiology of spinal cord injury. We will then discuss injuries relating to patient position, spinal cord hypoperfusion and neuraxial techniques. The most serious causes of spinal cord injury - vertebral canal haematoma, spinal epidural abscess, meningitis and adhesive arachnoiditis - will be discussed in turn. For each condition, we draw attention to practical, evidence-based measures clinicians can undertake to reduce their incidence, or mitigate their severity...
January 2018: Anaesthesia
https://www.readbyqxmd.com/read/29310877/effects-of-different-peracetic-acid-formulations-on-post-space-radicular-dentin
#12
Lauriê Garcia Belizário, Milton Carlos Kuga, Gabriela Mariana Castro-Núñez, Wilfredo Gustavo Escalante-Otárola, Marcus Vinicius Reis Só, Jefferson Ricardo Pereira
STATEMENT OF PROBLEM: The optimal irrigating solution with antimicrobial and dentin cleansing properties for post space preparation for fiber posts is unclear. Peracetic acid is one option but is available in various chemical formulations that require evaluation. PURPOSE: The purpose of this in vitro study was to evaluate dentin surface cleanliness based on the presence of a smear layer and the number of open dentin tubules. It also investigates the chemical composition of residues after canal irrigation with a 1% peracetic acid solution (PA) at low or high concentration of hydrogen peroxide during the preparation of intracanal fiber posts...
January 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29308519/-influence-of-age-on-the-effectiveness-of-revascularization-in-immature-permanent-teeth
#13
Wen-Feng Cai, Song Li, Ling Xie, Li-Li Yao, Chun-Hong Wang, Zhong-Hong Ren
PURPOSE: To evaluate the effect of age on the potential of dental pulp regeneration in young permanent teeth with periapical periodontitis. METHODS: A total of 30 mandibular premolars from 9-18 years old patients with pulp necrosis were divided into 2 groups, group A (younger age group): 9-13 years old, and group B (older age group): 14-18 years old. Revascularization procedures were performed for all patients. Follow-up was done for up to 18 months. Standardized radiographs of cone-beam CT (CBCT) were digitally evaluated for increase in root length and thickness...
October 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29308517/-comparison-of-the-accuracy-of-measuring-root-canal-working-length-in-3-different-ways
#14
Chang-Xi Lu, Ya-Qin Zhu
PURPOSE: To compare the accuracy of measuring root canal working length with two different electronic apex locators and digital X-ray. METHODS: Ninety patients treated from January 2015 to June 2016 were selected, 232 root canals in total were randomly divided into 3 groups: X-ray group, Raypex5 group and i-root group. The accuracy of working length measured was assessed according to the filling quality of related main tips. The data were analyzed with SPSS19.0 software package for Chi-square test...
October 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29308333/comparison-of-the-antibacterial-efficacy-of-alexidine-and-chlorhexidine-against-enterococcus-faecalis-an-in-vitro-study
#15
Preethi Varadan, Arathi Ganesh, Rudra Konindala, Venkateshbabu Nagendrababu, Rupa Ashok, Kandaswamy Deivanayagam
Introduction Root canal irrigants play an important role in reducing intracanal microorganisms, which in turn helps in achieving a successful outcome for the root canal treatment. Objective To compare the antibacterial efficacy of alexidine and chlorhexidine against Enterococcus faecalis. Methods A total of 50 extracted single-rooted teeth were randomly divided into five groups after being infected with Enterococcus faecalis. The groups were based on irrigants used: Group I - 0.4% alexidine; Group II - 1% alexidine; Group III - 1...
October 26, 2017: Curēus
https://www.readbyqxmd.com/read/29307169/micro-ct-assessment-of-internal-morphology-and-root-canal-configuration-of-non-c-shaped-mandibular-second-molars
#16
Thomas G. Wolf, Frank Paqué, Patrick Betz, Brita Willershausen, Benjamín Briseño-Marroquín
The root canal system morphology of the mandibular second molar was investigated by means of micro-computed tomography (μCT). The root canal configuration (RCC), foramina and accessory canals frequency of 93 mandibular second molars of an Egyptian sample were investigated by μCT scans. The RCC and main foramina number (MFN) are described by means of a four-digit system from coronal to apical. The most frequently observed RCCs in the mesial root were 2-2-1/1 (32.3%), 2-2-2/2 (28.0%), 1-1-1/1 (6.5%) and 2-1-1/1 (6...
June 18, 2017: Swiss Dental Journal
https://www.readbyqxmd.com/read/29306533/microbial-analysis-of-endodontic-infections-in-root-filled-teeth-with-apical-periodontitis-before-and-after-irrigation-using-pyrosequencing
#17
Homan Zandi, Anne K Kristoffersen, Dag Ørstavik, Isabela N Rôças, José F Siqueira, Morten Enersen
INTRODUCTION: The root canal microbiota in root-filled teeth with post-treatment apical periodontitis before and after chemomechanical instrumentation and irrigation with either 1% sodium hypochlorite (NaOCl) or 2% chlorhexidine digluconate were analyzed by using the pyrosequencing method. METHODS: Samples from 10 root-filled teeth with apical periodontitis undergoing retreatment were taken before (S1) and after (S2) preparation using irrigation with either NaOCl (n = 5) or 2% chlorhexidine digluconate (n = 5)...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29305571/laser-application-to-the-root-surface-increases-the-bonding-strength-of-surface-treated-prefabricated-glass-fiber-posts-in-teeth-with-excessive-substance-loss
#18
Zuhal Gorus, Ayse Mese, Berivan Dundar Yilmaz, Ozkan Adiguzel
BACKGROUND This study examined the effect of roughening of the root surface using an erbium-doped yttrium aluminum garnet (Er: YAG) laser on the binding strength of teeth undergoing root canal treatment. MATERIAL AND METHODS Ninety single-rooted teeth were used and assigned randomly to 9 groups (n=10 each). Root canals were prepared using the FlexMaster rotary system. An Er: YAG laser was applied to the root canals in Group 1, with no surface treatment of the glass-fiber post. In Group 2, aluminum oxide particles were applied...
January 6, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29304911/hardened-exogenous-material-after-extrusion-of-calcium-hydroxide-with-barium-sulfate-case-study-and-histopathologic-and-laboratory-analyses
#19
Giselle Nevares, Gabriela Queiroz de Melo Monteiro, Ana Paula Veras Sobral, Sergio Lemos de Campello, Marcely Cristiny Figueredo Cassimiro da Silva, Aldo Bezerra, Felipe Xavier Bezerra da Silva, Cristina Musso Scheneider, Diana Santana Albuquerque
BACKGROUND AND OVERVIEW: Although calcium hydroxide (Ca[OH]2) paste associated with barium sulfate (BaSO4) is considered a safe agent, there is a lack of clinical research on its effects on periodontal and submucosal tissues. The aim of the authors was to report the effects of extrusion of Ultracal XS paste (Ultradent Products) in 2 cases. The authors also analyzed the paste constituents and compared them with the proportion reported by the manufacturer and the material extruded. CASE DESCRIPTION: The authors present 2 cases in which root canals were restored with Ultracal XS paste after cleaning and shaping, and there was unintentional overextension of the paste into periradicular tissues, with a hardened exogenous material observed associated with inflammatory signs and symptoms...
January 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29303755/the-effect-of-edta-on-the-antibacterial-activity-of-sodium-hypochlorite
#20
Rita Azevedo Senna, Andressa Raquel Spohr, Andressa Heberle Gastmann, Fernanda Geraldo Pappen, Regina Karla de Pontes Lima, Renata Dornelles Morgental
The combination of ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) has been suggested as an irrigant for root canal therapy. However, the chemical interaction between these agents is a complex subject that is not completely understood. The aim of this study was to evaluate the interference of an EDTA chelating agent in the antibacterial ability of NaOCl, while also considering variations in methodology. Various concentrations of NaOCl and EDTA solutions were prepared from 6% and 17% solutions, respectively...
January 2018: General Dentistry
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