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Journal of Endodontics

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https://www.readbyqxmd.com/read/28606672/three-dimensional-sphere-forming-cells-are-unique-multipotent-cell-population-in-dental-pulp-cells
#1
Sung Hee Lee, Andrew Inaba, Neha Mohindroo, Deepika Ganesh, Charlotte Ellen Martin, Nadia Chugal, Reuben H Kim, Mo K Kang, No-Hee Park, Ki-Hyuk Shin
INTRODUCTION: Mesenchymal stem cells (MSCs) are typically cultured as adherent monolayer using a conventional tissue culture technique. However, this technique incompletely reproduces an in vivo microenvironment of stem cells and results in the loss of stemness properties. Three-dimensional (3D) sphere culture is one of the most widely used 3D culture techniques that have been developed to recapitulate the in vivo microenvironment. However, the stemness and multilineage differentiation capacity of spheres derived from dental pulp stem cells (DPSCs) have not been well investigated...
June 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28606671/external-cervical-resorption-a-new-oral-manifestation-of-systemic-sclerosis
#2
Sebastiana Arroyo-Bote, Cristina Bucchi, Ma Cristina Manzanares
Systemic sclerosis (SSc) is a complex, chronic, and progressive autoimmune disease. SSc causes bone resorption of mandible and distal phalanges of fingers through a known mechanism, and it has also been pointed out as a possible cause of apical root resorption of teeth, because tooth resorption is regulated by similar mechanisms to those controlling bone resorption. The objective of this article was to report the first case in the literature of external cervical resorption (ECR) as an oral manifestation of SSc...
June 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28606670/letter-to-the-editor-warm-vertical-compaction-and-its-influence-on-the-properties-of-root-canal-sealers
#3
LETTER
Afaf Yahya Al-Haddad
No abstract text is available yet for this article.
June 9, 2017: Journal of Endodontics
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
#4
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/28606668/detectability-of-middle-mesial-root-canal-orifices-by-troughing-technique-in-mandibular-molars-a-micro-computed-tomographic-study
#5
Ali Keleş, Cangül Keskin
INTRODUCTION: The objective of the present study was to measure the orifice depth of middle mesial canals (MMCs) and evaluate the detectability of orifices using troughing preparation. METHODS: For this study, 85 mandibular molar teeth with MMCs were selected from the scanned micro-computed tomographic images. The MMCs were categorized, and the distances between the MMC orifices and the cementoenamel junctions (CEJ) were recorded as the depth of the orifice. Data were evaluated with frequency analysis and a chi-square test using SPSS (SPSS Inc, Chicago, IL), and the results indicated a 5% significance level...
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
#6
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
https://www.readbyqxmd.com/read/28606666/development-of-periapical-lesions-in-endodontically-treated-teeth-with-and-without-periodontal-involvement-a-retrospective-cohort-study
#7
Xavier-Fructuós Ruiz, Fernando Duran-Sindreu, Hagay Shemesh, Marc García Font, Marta Vallés, Miguel Roig Cayón, Juan Gonzalo Olivieri
INTRODUCTION: The purpose of this study was to investigate the incidence of apical periodontitis (AP) in endodontically treated teeth with and without periodontal involvement. METHODS: The records of 602 patients with 775 root canal-treated teeth were initially examined. Only teeth with adequate root canal filling, adequate coronal restoration, and no AP (periapical index = 1) were selected for further investigation. A total of 194 teeth were included in this cohort study...
June 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578894/assessment-of-a-cavity-to-optimize-ultrasonic-efficiency-to-remove-intraradicular-posts
#8
Izabela Araujo Aguiar Graça, Emílio Carlos Sponchiado Júnior, André Augusto Franco Marques, Leandro de Moura Martins, Ângela Delfina Bittencourt Garrido
INTRODUCTION: The study assessed an in vitro protocol for the removal of cast metal posts using ultrasonic vibration in multirooted teeth by drilling a cavity in the coronal portion of the post followed by ultrasound application in the cavity. METHOD: Forty endodontically treated molars received intraradicular cast posts and were divided into 4 groups according to the removal protocol: the control group, no cavity and no ultrasonic vibration; the ultrasonic group, no cavity and ultrasonic vibration in the coronal portion of the core; the cavity group, a cavity in the core and no ultrasonic vibration; and the cavity ultrasonic group, a cavity in the core and ultrasonic vibration inside the cavity...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578893/long-term-success-of-nonvital-immature-permanent-incisors-treated-with-a-mineral-trioxide-aggregate-plug-and-adhesive-restorations-a-case-series-from-a-private-endodontic-practice
#9
Marga H Ree, Richard S Schwartz
This case series evaluated the long-term clinical outcome of nonvital immature teeth treated with mineral trioxide aggregate (MTA) as an apical barrier and an adhesive restoration with or without a fiber post. Eighty-three teeth in 72 patients were treated by the first author with an apical MTA plug and an adhesive restoration of composite resin and in 45 of the 83 teeth 1 or more fiber posts. All of the patients had been referred to the first author's private endodontic practice with at least 1 immature tooth with signs of pulpal necrosis and subsequent apical periodontitis that had been caused by a variety of traumatic dental injuries...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578892/proteome-expression-in-human-periodontal-ligament-after-delayed-hypothermic-preservation
#10
Sin-Yeon Cho, Junhee Park, Won-Yoon Chung, Euiseong Kim, Il-Young Jung, Seong-Ho Choi, Kwang-Kyun Park, Seung-Jong Lee
INTRODUCTION: Previous occasional successes after delayed replantation suggest that the presence of viable cells may not be the only factor for successful periodontal regeneration in delayed replantation. Various other factors such as proteins or the extracellular matrix (ECM) may play a role in this process. The purpose of this study was to characterize changes in the proteome components of periodontal ligament (PDL) tissue after hypothermic preservation of the tooth. METHODS: Extracted teeth were divided into 4 groups: immediate sampling, sampling after 1 week of preservation at 4°C, sampling after 2 weeks of preservation at 4°C, and sampling after 1 week of dry storage at room temperature as a negative control...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578891/autotransplantation-of-mandibular-third-molar-with-buccal-cortical-plate-to-replace-vertically-fractured-mandibular-second%C3%A2-molar-a-novel-technique
#11
Juan Zufía, Francesc Abella, Ivan Trebol, Ramón Gómez-Meda
Tooth replacement often leads to inadequate vertical volume in the recipient site bone when a tooth has been extracted because of a vertical root fracture (VRF). This case report presents the autotransplantation of a mandibular third molar (tooth #32) with the attached buccal cortical plate to replace a mandibular second molar (tooth #31) diagnosed with a VRF. After extraction of tooth #31, the recipient socket was prepared based on the size measured in advance with cone-beam computed tomographic imaging. The precise and calculated osteotomy of the cortical bone of tooth #32 allowed for the exact placement of the donor tooth in the position of tooth #31...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578890/dynamic-torsional-and-cyclic-fracture-behavior-of-profile-rotary-instruments-at-continuous-or-reciprocating-rotation-as-visualized-with-high-speed-digital-video-imaging
#12
Daisuke Tokita, Arata Ebihara, Kana Miyara, Takashi Okiji
INTRODUCTION: This study examined the dynamic fracture behavior of nickel-titanium rotary instruments in torsional or cyclic loading at continuous or reciprocating rotation by means of high-speed digital video imaging. METHODS: The ProFile instruments (size 30, 0.06 taper; Dentsply Maillefer, Ballaigues, Switzerland) were categorized into 4 groups (n = 7 in each group) as follows: torsional/continuous (TC), torsional/reciprocating (TR), cyclic/continuous (CC), and cyclic/reciprocating (CR)...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578889/telescopic-dental-needles-versus-conventional-dental-needles-comparison-of-pain-and-anxiety-in-adult-dental-patients-of-kerman-university-of-medical-sciences-a-randomized-clinical-trial
#13
Raha Habib Aghahi, Seyed Abdol Reza Gandjalikhan Nassab, Ali Eskandarizadeh, Ali Reza Saidi, Arash Shahravan, Maryam Alsadat Hashemipour
INTRODUCTION: Pain felt during dental injections is dependent on dental anxiety. Patients feel increased pain if anxiety in the treatment environment is high, and therefore it is important to reduce anxiety during treatment to reduce pain. The purpose of this study was to compare pain and anxiety levels experienced during injections using a newly invented telescopic-coated dental needle that covers the conventional needle and also has the capability of applying topical anesthesia through its unique design with the conventional dental injection needle...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578888/comparative-evaluation-of-chemotactic-factor-effect-on-migration-and-differentiation-of-stem-cells-of-the-apical-papilla
#14
Sara Fayazi, Koyo Takimoto, Anibal Diogenes
INTRODUCTION: Cell homing strategies could potentially be used in regenerative endodontic procedures (REPs) to promote the progressive coronal migration of stem cells, including stem cells of the apical papilla (SCAPs), along with formation of a new vascular network without the need for intentional apical trauma and intracanal bleeding. Although many chemotactic factors have been investigated for different mesenchymal stem cells, their effect on SCAP migration and differentiation is not fully understood...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578887/a-retrospective-radiographic-outcomes-assessment-of-1960-initial-posterior-root-canal-treatments-performed-by-endodontists-and-dentists
#15
Kelly Ramey, John Yaccino, James Wealleans
INTRODUCTION: The Air Force Dental Service has established evidence-based treatment standards for endodontics, including 3-dimensional filling of the canal system, cuspal coverage restoration of endodontically treated posterior teeth, and use of rubber dam. The purpose of this retrospective study was to determine the effect of these standards on outcomes of initial posterior root canal treatments (RCTs) completed by Air Force (AF) and civilian dentists with and without accredited postgraduate training...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578886/antibacterial-properties-of-chitosan-nanoparticles-and-propolis-associated-with-calcium-hydroxide-against-single-and-multispecies-biofilms-an-in%C3%A2-vitro-and-in-situ-study
#16
Aldo Del Carpio-Perochena, Anil Kishen, Rafael Felitti, Anjali Y Bhagirath, Manoj R Medapati, Christopher Lai, Rodrigo S Cunha
INTRODUCTION: The aim of this study was to evaluate the efficacy of chitosan nanoparticles (CNPs) and ethanolic propolis extract (EPE) incorporated into a calcium hydroxide paste (Ca[OH]2) to kill bacterial biofilms. METHODS: Human root canal dentin was infected with Enterococcus faecalis for 21 days and also intraorally for 48 hours followed by incubation in brain-heart infusion for 48 hours to standardize biofilm growth. Ca(OH)2 pastes associated or not with CNPs or EPE were tested on biofilms for 7 and 14 days...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578885/endodontic-board-certification-a-review-of-factors-affecting-the-certification-rate
#17
Emily Case, Anne Williamson, William T Johnson, Wei Liu, Fang Qian
INTRODUCTION: Board certification identifies clinicians who possess advanced proficiency and expertise within their field. Only 23% of endodontists are board certified (the lowest among all dental specialties). The aim of this study was to determine the factors that influence endodontists' decisions regarding the completion of board certification. METHODS: A 16-question survey was e-mailed to 5073 US endodontists and residents who are American Association of Endodontists members...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578884/microrna-335-5p-plays-dual-roles-in-periapical-lesions-by-complex-regulation-pathways
#18
Junli Yue, Puyu Wang, Qingchun Hong, Qian Liao, Li Yan, Weizhe Xu, Xi Chen, Qinghua Zheng, Lan Zhang, Dingming Huang
INTRODUCTION: MicroRNA-335-5p has been reported to regulate osteogenic and chondrogenic differentiations of mesenchymal stem cells. The aim of this study was to explore the function and regulation mechanism of miR-335-5p in apical periodontitis (AP). METHODS: Total RNAs were extracted from human periodontal ligament fibroblasts (HPDLFs), 10 AP tissues, and 6 healthy periodontal ligament tissues using lysis buffer. Gene expression was detected using real-time polymerase chain reaction...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28577962/free-active-chlorine-in-sodium-hypochlorite-solutions-admixed-with-octenidine-smearoff-chlorhexidine-and-edta
#19
Unni Krishnan, Sreeja Saji, Roger Clarkson, Ratilal Lalloo, Alex J Moule
INTRODUCTION: The therapeutic effects of sodium hypochlorite (NaOCl) solutions are dependent on the levels of free available chlorine (FAC). Mixing these solutions with irrigants can result in significant reductions in FAC. Although the effect of some irrigants on FAC is known, the effect of other commonly used irrigants is not. Thus, the therapeutic ramifications of the concurrent use of these on the efficiency of NaOCl solutions is not known. METHODS: Aliquots of 5...
May 31, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28577961/histologic-evaluation-of-regenerative-endodontic-procedures-with-the-use-of-chitosan-scaffolds-in-immature-dog-teeth-with-apical-periodontitis
#20
Paulo J Palma, João C Ramos, João B Martins, Anibal Diogenes, Maria H Figueiredo, Paula Ferreira, Carlos Viegas, João M Santos
INTRODUCTION: The aim of this study was to evaluate histologically the newly formed tissues after regenerative endodontic procedures (REPs) in dogs using either a blood clot (BC) or 2 different formulations of a chitosan hydrogel as scaffolds. METHODS: Apical periodontitis was induced by inoculating immature teeth with oral plaque in 4 beagle dogs. Teeth (n = 96) were divided into 2 control (n = 20) and 4 test groups (n = 76) according to the treatment: apexification and REPs with BC, sodium hyaluronate:chitosan (HA:CS) scaffolds, or pectin:chitosan (P:CS) scaffolds...
May 31, 2017: Journal of Endodontics
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