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Journal of Endodontics

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https://www.readbyqxmd.com/read/29153985/diagnosis-of-mesiodistal-vertical-root-fractures-in-teeth-with-metal-posts-influence-of-applying-filters-in-cone-beam-computed-tomography-images-at-different-resolutions
#1
Débora De Martin E Silva, Celso Neiva Campos, Antônio Carlos Pires Carvalho, Karina Lopes Devito
INTRODUCTION: The aim of this article was to evaluate the influence of applying filters in cone-beam computed tomography (CBCT) images at different resolutions. These CBCT images were obtained for diagnosing mesiodistal vertical root fractures (VRFs) in teeth with metal posts. METHODS: Forty teeth were treated endodontically, and 20 received metal posts. Ten teeth without posts and 10 teeth with posts were subjected to VRF in the mesiodistal direction. The sample was submitted to periapical radiographs and CBCT exams with a voxel of 0...
November 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153984/influence-of-mixed-additives-on-the-physicochemical-properties-of-a-5-25-sodium-hypochlorite-solution-an-unsupervised-multivariate-statistical-approach
#2
Oana Dragan, Ioan Tomuta, Dorina Casoni, Costel Sarbu, Radu Campian, Tiberiu Frentiu
INTRODUCTION: This article reports for the first time the effects of multiple additives (polyethylene glycol 400, Triton X-100, benzalkonium chloride, and ethyl formate) on the surface tension, pH, and viscosity of 5.25% sodium hypochlorite (NaOCl) irrigant solution. Advanced statistical approaches based on unsupervised multivariate analysis (cluster analysis and principal component analysis) were used to quantify the variability of the physicochemical properties of the modified NaOCl solution for the first time in dentistry...
November 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153734/the-incidence-of-second-mesiobuccal-canals-located-in-maxillary-molars-with-the-aid-of-cone-beam-computed-tomography
#3
Ben Studebaker, Lars Hollender, Lloyd Mancl, James D Johnson, Avina Paranjpe
INTRODUCTION: Many endodontic treatment failures in maxillary molars result from missed second mesiobuccal (MB2) canals. An MB2 canal orifice is present in as many as 95% of maxillary molars, but these canals are not always located during endodontic procedures. Additional tools, such as cone-beam computed tomographic (CBCT) imaging, may be needed to locate these canals in maxillary molars. Hence, the aims of this study were to investigate the frequency of use of CBCT imaging during the treatment of maxillary molars and to evaluate the influence of its use on the detection of MB2 canals...
November 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153733/antibacterial-activity-of-endodontic-sealers-against-planktonic-bacteria-and-bacteria-in-biofilms
#4
Vasileios Kapralos, Andreas Koutroulis, Dag Ørstavik, Pia Titterud Sunde, Håkon Valen Rukke
INTRODUCTION: The aim of this study was to investigate the antibacterial activity of 4 endodontic sealers against bacteria planktonic grown or in biofilms commonly detected from persistent and secondary endodontic infections. METHODS: The antibacterial activity of the sealers AH Plus, TotalFill BC sealer, RoekoSeal, and Guttaflow 2 was investigated for planktonic grown and 24-hour-old biofilms of Enterococcus faecalis, Staphylococcus epidermidis, Staphylococcus aureus, and Streptococcus mutans...
November 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153732/reinforcement-of-simulated-immature-permanent-teeth-after-mineral-trioxide-aggregate-apexification
#5
Pairoj Linsuwanont, Sirinya Kulvitit, Busayarat Santiwong
OBJECTIVES: The objectives of this study were to compare the fracture resistance of simulated human immature teeth that have undergone mineral trioxide aggregate (MTA) apexification and have been root-filled with fiber post, composite resin, MTA, or gutta-percha. METHODS: Fifty-six human permanent maxillary incisors were selected. Ten teeth received no treatment (intact teeth group). The root canals of 46 teeth were prepared to an internal diameter of 1.75 mm. Six teeth were used as simulated immature teeth group...
November 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153731/bioactivity-of-photoactivated-functionalized-nanoparticles-assessed-in-lipopolysaccharide-contaminated-root-canals-in%C3%A2-vivo
#6
Annie Shrestha, Shimon Friedman, Calvin D Torneck, Anil Kishen
INTRODUCTION: The persistence of dentin-bound lipopolysaccharides (LPS) in disinfected root canals impedes treatment outcomes of endodontic procedures. This study assessed the effects of photoactivated rose bengal-functionalized chitosan nanoparticles (CSRBnps) on LPS-contaminated root dentin in vivo using an intraosseous implantation model and neotissue formation as a marker. METHODS: Fifty human, 3-mm-long root segments with a 1.2-mm canal lumen were divided into 5 groups (n = 10): group 1, canals not contaminated; group 2, canals contaminated with Pseudomonas aeruginosa LPS; group 3, canals contaminated and disinfected with sodium hypochlorite (NaOCl); group 4, canals contaminated and disinfected with NaOCl and calcium hydroxide; and group 5, canals contaminated and disinfected with NaOCl and CSRBnps (300 μg/mL) with photoactivation (λ = 540 nm, 40 J/cm(2))...
November 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29153730/effect-of-a-combination-of-intranasal-ketorolac-and-nitrous-oxide-on-the-success-of-the-inferior-alveolar-nerve-block-in-patients-with-symptomatic-irreversible-pulpitis-a-prospective-randomized-double-blind-study
#7
Daniel Stentz, Melissa Drum, Al Reader, John Nusstein, Sara Fowler, Mike Beck
INTRODUCTION: Previous studies in patients with irreversible pulpitis have reported increased success of the inferior alveolar nerve block (IANB) using premedication with ketorolac. Preemptive nitrous oxide administration has also shown an increase in the success of the IANB. Recently, ketorolac has been made available for intranasal delivery. Perhaps combining ketorolac and nitrous oxide would increase success. Therefore, the purpose of this prospective, randomized, double-blind study was to determine the effect of a combination of intranasal ketorolac and nitrous oxide/oxygen on the anesthetic success of the IANB in patients presenting with symptomatic irreversible pulpitis...
November 15, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29102078/root-canal-filling-quality-of-a-premixed-calcium-silicate-endodontic-sealer-applied-using-gutta-percha-cone-mediated-ultrasonic-activation
#8
Jung-Ae Kim, Yun-Chan Hwang, Vinicius Rosa, Mi-Kyung Yu, Kwang-Won Lee, Kyung-San Min
INTRODUCTION: The aim of this study was to investigate the filling quality of a recently developed premixed calcium silicate-based endodontic sealer (Endoseal MTA) with a single gutta-percha (GP) cone technique compared with a resin-based sealer (AH plus) with warm vertical compaction. We also explored the effect of GP cone-mediated ultrasonic activation on the filling quality of Endoseal MTA. METHODS: Thirty human single-rooted maxillary premolars with ribbon-shaped canals were prepared and assigned to 3 experimental groups according to filling method: EMS group was Endoseal MTA + single-cone; EMSU group was Endoseal MTA + single-cone with ultrasonic activation; and the APW group was AH plus + warm vertical compaction...
October 25, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079059/differential-expression-of-long-noncoding-rnas-in-normal-and-inflamed-human-dental-pulp
#9
Xin Huang, Ke Chen
INTRODUCTION: Dental pulp inflammation is an excellent model for the interaction between tissue inflammation and regenerative processes. It is worthwhile to better understand molecular signaling of repair and regeneration in inflammatory processes. Emerging evidence suggests that long noncoding RNA (lncRNA) participates in immune system inflammatory processes. Here we investigate the expression of lncRNAs in pulpitis, the inflammation of dental pulp tissue, and identify lncRNAs that possibly participate in inflammation responses and odontogenesis...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079058/cyclic-and-torsional-fatigue-resistance-of-xp-endo-shaper-and-trushape-instruments
#10
Emmanuel João Nogueira Leal Silva, Victor Talarico Leal Vieira, Felipe Gonçalves Belladonna, Arthur de Siqueira Zuolo, Henrique Dos Santos Antunes, Daniele Moreira Cavalcante, Carlos Nelson Elias, Gustavo De-Deus
INTRODUCTION: The purpose of this study was to evaluate the cyclic and torsional fatigue resistance of the XP-endo Shaper (FKG Dentaire, La Chaux-de-Fonds, Switzerland) and TRUShape (Dentsply Tulsa Dental Specialties, Tulsa, OK) instruments. METHODS: Twenty XP-endo Shaper (30/0.01) instruments and 20 TRUShape (30/0.06v) instruments were used. Cyclic fatigue resistance was tested by measuring the number of cycles and time to fracture in an artificial stainless steel canal with a 60° angle and a 5-mm radius of curvature (n = 10)...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079057/intracanal-cryotherapy-reduces-postoperative-pain-in-teeth-with-symptomatic-apical-periodontitis-a-randomized-multicenter-clinical%C3%A2-trial
#11
Jorge Vera, Jorge Ochoa, Monica Romero, Marino Vazquez-Carcaño, Cesar Omar Ramos-Gregorio, Ruben Rosas Aguilar, Alvaro Cruz, Philippe Sleiman, Ana Arias
INTRODUCTION: A prospective, multicentered, randomized clinical trial was designed to assess if controlled irrigation with cold saline could result in less incidence and intensity of postoperative pain in patients presenting with pulp necrosis and symptomatic apical periodontitis. METHODS: A total of 210 patients (presenting with necrotic uniradicular teeth with a diagnosis of symptomatic apical periodontitis and a preoperative visual analog scale (VAS) score higher than 7) were randomly allocated in the control or experimental group after the completion of shaping and cleaning procedures...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079056/large-periapical-or-cystic-lesions-in-association-with-roots-having-open-apices-managed-nonsurgically-using-1-step-apexification-based-on-platelet-rich-fibrin-matrix-and-biodentine-apical-barrier-a-case-series
#12
Sarang Sharma, Vivek Sharma, Deepak Passi, Dhirendra Srivastava, Shibani Grover, Shubha Ranjan Dutta
Teeth having open apices in the absence of a natural apical constriction pose several challenges during conventional endodontic treatment, especially when establishing an apical seal. Treatment is further challenging when these teeth are associated with large periapical or cystic lesions having resulted in expansion and/or thinning of adjacent cortical plates. Although surgical intervention is commonly adopted in the management of such cases, a conservative treatment option offering equally good prognosis is always desirable...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079055/bleaching-of-a-discolored-tooth-with-retrieval-of%C3%A2-remnants-after-successful-regenerative-endodontics
#13
Aovana Timmerman, Peter Parashos
INTRODUCTION: This report presents the retrieval of remnants from a discolored mandibular right second premolar (tooth #29) of a 17-year-old female after a successful regenerative endodontic procedure (REP). METHODS: The REP was performed in October 2011. Coronal discoloration became of great concern to the patient at a review visit in 2016. A cone-beam computed tomographic scan was taken to investigate the formation of hard tissues within the root canal as well as a region of no calcified tissue formation...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079054/ultrasound-assessment-of-bone-healing-after-root-end-surgery-echoes-back-to-patient-s-safety
#14
Frederik Curvers, Nastaran Meschi, Anke Vanhoenacker, Olaf Strijbos, Maarten Van Mierlo, Paul Lambrechts
INTRODUCTION: The aim of this study was to present ultrasound imaging (UI) techniques as promising and safe tools for the follow-up of root-end surgery (RES) in vivo. METHODS: The study included 8 patients who underwent RES. All were followed up using UI at 1 week, 1 month, 2 months, 3 months, and 6 months (if necessary) after RES. The bony crypt was defined on the ultrasound image, and the following observations were made during follow-up: cortical bone interruption and surface area measurement of the residual echoic bony crypt image...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079053/dehydration-induces-cracking-in-root-dentin-irrespective-of-instrumentation-a-two-dimensional-and-three-dimensional-study
#15
Hagay Shemesh, Tom Lindtner, Carlos Aznar Portoles, Paul Zaslansky
INTRODUCTION: Water loss strongly affects the mechanical behavior of dentin. Micro-computed tomography (μCT) studies exploring the influence of endodontic procedures on root cracking often lack information on the hydration state of the scanned samples. This study explores the relationship between dehydration and crack formation in root dentin with and without endodontic instrumentation. METHODS: Fifty-three extracted teeth were used. Thirty canals were not instrumented, and 23 canals were instrumented with ProTaper files until F3...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079052/biocompatibility-of-new-pulp-capping-materials-neomta-plus-mta-repair-hp-and-biodentine-on-human-dental-pulp-stem-cells
#16
Christopher J Tomás-Catalá, Mar Collado-González, David García-Bernal, Ricardo E Oñate-Sánchez, Leopoldo Forner, Carmen Llena, Adrián Lozano, José M Moraleda, Francisco J Rodríguez-Lozano
INTRODUCTION: The aim of the present study was to evaluate the in vitro cytotoxicity of MTA Repair HP, NeoMTA Plus, and Biodentine, new bioactive materials used for dental pulp capping, on human dental pulp stem cells (hDPSCs). METHODS: Biological testing was carried out in vitro on hDPSCs. Cell viability and cell migration assays were performed using eluates of each capping material. To evaluate cell morphology and cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079051/minced-pulp-as-source-of-pulpal-mesenchymal-stem-cells-with-odontogenic-differentiation-capacity
#17
Zhnagrui Liang, Satoshi Kawano, Wei Chen, Moein S Sadrkhani, Chaehwan Lee, Euiseong Kim, Alireza Moshaverinia, Reuben H Kim, Mo Kang
INTRODUCTION: Pulp tissue regeneration is becoming a reality after discovery of mesenchymal stem cells (MSCs) residing in the pulp tissues through various clinical innovations, although MSC transplantation into the pulp space has met with challenges of in vitro cell expansion and cultures. As a way to circumvent the regulatory and technical complexities of in vitro MSC culture, we investigated the use of minced pulp tissues as a source of pulpal MSCs for tissue regeneration. METHODS: We characterized the phenotype of cells explanted from minced pulp (MP), namely MP-derived MSCs (MP-MSCs), compared with dental pulp stem cells (DPSCs) established from pulp tissues by enzyme digestion...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079050/complicated-root-canal-morphology-of-mandibular-lateral-incisors-is-associated-with-the-presence-of-distolingual-root-in-mandibular-first-molars-a-cone-beam-computed-tomographic-study-in-a-taiwanese-population
#18
Yu-Chiao Wu, Wan-Chien Cheng, Ming-Pang Chung, Chi-Chun Su, Pei-Wei Weng, Yi-Wen Cathy Tsai, Ho-Sheng Chiang, Hsiao-Wen Yeh, Chi-Hsiang Chung, Yi-Shing Shieh, Ren-Yeong Huang
INTRODUCTION: The aim of this study was to assess the root canal configurations in permanent mandibular lateral incisors (PMLIs) and the correlation between the root canal configurations of PMLIs with the appearance of a distolingual root (DLR) in permanent mandibular first molars (PMFMs) using cone-beam computed tomographic (CBCT) imaging. METHODS: A total of 1200 CBCT images (300 patients) of PMFMs and PMLIs were investigated. The frequency and distribution of DLRs in PMFMs along with root canal configurations of PMLIs were assessed ipsilaterally and contralaterally...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079049/evaluation-of-the-periodontal-disease-effect-on%C3%A2-pulp-volume
#19
Arslan Terlemez, Raif Alan, Onur Gezgin
INTRODUCTION: The success of periodontal and endodontic treatments depends on the total recovery from both conditions regardless of their occurrence as independent or combined lesions. There is strong presumptive evidence that teeth with periodontal disease may cause pulpal inflammation and degeneration. Therefore, the goal of this study was to establish a correlation between periodontitis and pulp volume. METHODS: Thirty-four dental images from 17 patients obtained by cone-beam computed tomography were analyzed by medical software to create three-dimensional images...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079048/cytokine-expression-of-stem-cells-originating-from-the-apical-complex-and-coronal-pulp-of-immature-teeth
#20
Ki Hoon Joo, Je Seon Song, Seunghye Kim, Hyo-Seol Lee, Mijeong Jeon, Seong-Oh Kim, Jae-Ho Lee
INTRODUCTION: The aim of this study was to measure and compare the expression levels of cytokines from developing apical complex cells (DACCs) and dental pulp stem cells (DPSCs) of the immature tooth. METHODS: DPSC-conditioned medium (CM) and DACCs-CM were obtained from human young teeth, and 174 cytokines secreted from each CM were identified and compared. A cytokine membrane array and enzyme-linked immunosorbent assay were used to measure and compare the expression levels of the cytokines...
October 24, 2017: Journal of Endodontics
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