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Root Canal treatment

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https://www.readbyqxmd.com/read/29160397/mechanical-preparation-showed-superior-shaping-ability-than-manual-technique-in-primary-molars-a-micro-computed-tomography-study
#1
Lídia Regina da Costa Hidalgo, Léa Assed Bezerra da Silva, Graziela Bianchi Leoni, Jardel Francisco Mazzi-Chaves, Emily Eduardo da Silva Carvalho, Alberto Consolaro, Manoel Damião Sousa-Neto
The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29157461/automated-outcome-scoring-in-a-virtual-reality-simulator-for-endodontic-surgery
#2
Myat Su Yin, Peter Haddawy, Siriwan Suebnukarn, Phattanapon Rhienmora
BACKGROUND AND OBJECTIVE: We address the problem of automated outcome assessment in a virtual reality (VR) simulator for endodontic surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This study takes a first step toward automated generation of such comprehensive feedback. METHODS: Virtual reference templates are computed based on tooth anatomy and the outcome is assessed with a 3D score cube volume which consists of voxel-level non-linear weighted scores based on the templates...
January 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29155532/the-restorability-assessment-and-endodontic-access-cavity-interface
#3
Graham Quilligan, Gerald McKenna, P Finbarr Allen
Successful root canal treatment requires management of the bacterial infection within the root canal space and protection of residual tooth structure with direct/indirect restorations. Long-term success depends upon prevention of re-infection of the root canal space as well as ensuring favourable distribution of the occlusal forces throughout the residual tooth structure. Appropriate planning and design of the final restoration prior to initiating root canal treatment is paramount in achieving this objective...
December 2016: Dental Update
https://www.readbyqxmd.com/read/29153732/reinforcement-of-simulated-immature-permanent-teeth-after-mineral-trioxide-aggregate-apexification
#4
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
#5
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/29151799/endodontic-management-of-maxillary-third-molar-with-mb2-vertucci-type-iv-canal-configuration-diagnosed-with-cone-beam-computed-tomography-a-case-report
#6
Pradeep Jain, Pallav Patni, Pant Yogesh, Vyas Anup
The endodontic treatment of maxillary third molar often poses a challenge even to an experienced endodontist because of their most posterior location in the dental arch, aberrant occlusal anatomy, abnormal root canal configuration and eruption patterns. Owing to these anatomical limitations, their extraction remains the treatment of choice for many clinicians. As we know, retaining every functional component of the dental arch is of prime importance in contemporary dental practice. This clinical case report aims to discuss the endodontic treatment of maxillary third molar with MB2 root canal separated throughout the length and exit at two separate apical foramina (Vertucci type IV) diagnosed with Cone Beam Computed Tomography (CBCT)...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29143136/investigation-of-arginine-a-specific-cysteine-proteinase-gene-expression-profiling-in-clinical-porphyromonas-gingivalis-isolates-against-photokilling-action-of-the-photo-activated-disinfection
#7
Maryam Pourhajibagher, Roghayeh Ghorbanzadeh, Abbas Bahador
Porphyromonas gingivalis is a significant root canal pathogen capable of causing endodontic infections, which during their treatment may receive sub-lethal doses of photo-activated disinfection (sPAD). As sPAD can influence microbial virulence, this study was designed to evaluate the effect of sPAD on gene expression level of arginine A-specific cysteine proteinase (rgpA), as one of the underlying virulence factors involved in the development of endodontic infection via P. gingivalis strains. To find out the sPAD against 16 clinical isolates of PAD-resistant P...
November 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29126360/endodontic-treatment-of-canine-teeth-in-a-cynomolgus-monkey-macaca-fascicularis
#8
Caterina Facchini, Ilaria Iacopetti, Eugenio Gaudio, Alessandro Zotti, Massimo Boldrin, Fabio Fante, Franco Mutinelli, Emanuele Cozzi, Giulia Maria De Benedictis
A case of bilateral superior canine tooth pulp necrosis in an 18-year-old male Macaca fascicularis is described . A skull computed tomography scan was performed to confirm the diagnostic suspicion. A successful bilateral endodontic treatment with coronotomy was performed using rotary nickel-titanium instruments. Post-operative dental radiographs confirmed the correct positioning of the sealant. A rapid and excellent clinical recovery was obtained after each surgery. This innovative approach may contribute to improving the quality of root canal treatments provided to non-human primates...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29123632/management-of-post-endodontic-retreatment-pain-with-low-level-laser-therapy
#9
Mohammad Asnaashari, Hengameh Ashraf, Amir Houshang Daghayeghi, Seyed Masoud Mojahedi, Saranaz Azari-Marhabi
Introduction: Pharmacotherapy with analgesics and non-steroidal anti-inflammatory drugs has been traditionally used to relief post-operative pain of endodontic treatments. However, due to the side effects reported for these drugs, some efforts have been made to decrease the post-operative pain of the endodontic treatments through laser irradiation. The present study aimed to evaluate the effects of low level laser therapy (LLLT) on the reduction of pain after root canal retreatment. Methods: In this clinical trial, 61 patients requiring endodontic retreatments in posterior teeth were selected...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29122762/long-term-effectiveness-of-direct-ct-guided-aspiration-and-fenestration-of-symptomatic-lumbar-facet-synovial-cysts
#10
V N Shah, N D von Fischer, C T Chin, E L Yuh, M R Amans, W P Dillon, C P Hess
BACKGROUND AND PURPOSE: Lumbar facet synovial cysts are commonly seen in facet degenerative arthropathy and may be symptomatic when narrowing the spinal canal or compressing nerve roots. The purpose of this study was to analyze the safety, effectiveness, and long-term outcomes of direct CT-guided lumbar facet synovial cyst aspiration and fenestration for symptom relief and for obviating an operation. MATERIALS AND METHODS: We retrospectively reviewed the medical records and imaging studies of 64 consecutive patients between 2006 and 2016 who underwent 85 CT-guided lumbar facet synovial cyst fenestration procedures in our department...
November 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29114431/maxillary-first-premolars-with-three-root-canals-two-case-reports
#11
Zeliha Ugur, Kerem Engin Akpinar, Demet Altunbas
It is very important that the dentists have sufficient information about possible variations in the expected root canal configurations in order to achieve success in endodontic treatment. In addition to having adequate knowledge on the variations of the root canal anatomy, periapical radiographs from different angles, careful examination of the pulp chamber floor, and use of dental operation microscope during the procedure are also important factors that contribute to the diagnosis of the additional roots and canals...
2017: J Istanb Univ Fac Dent
https://www.readbyqxmd.com/read/29104601/treatment-of-a-four-rooted-maxillary-second-molar-detected-with-cone-beam-computed-tomography
#12
Nahid Mohammadzade Akhlaghi, Mahta Fazlyab
The significance of clinician's knowledge about root canal anatomy and its possible variations cannot be overlooked. In some cases, taking advantage of complementary imaging techniques can help achieve a perfect flawless endodontic treatment. This article reports endodontic management of a second maxillary molar that had an uncommon anatomy of the chamber floor. After obtaining a cone-beam computed tomography (CBCT) image, the presence of a second palatal root was confirmed. All four roots were treated and patient's symptoms were resolved...
March 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29098254/-comparison-of-antimicrobial-activity-of-er-cr-ysgg-laser-and-ultrasonic-irrigation-in-root-canal-disinfection
#13
Chun-Hui Lu, Qun Zhong
PURPOSE: The aim of this study was to compare the antimicrobial activity of Er,Cr:YSGG laser and ultrasonic irrigation in root canal disinfection. METHODS: Sixty decayed teeth requiring root canal therapy were divided into 3 groups randomly: Er,Cr:YSGG laser group, ultrasonic irrigation group and control group, 20 in each group. The bacteria in each group were incubated and counted before and after root canal treatment. Statistical analysis was performed using SPSS 19...
June 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29097954/redundant-nerve-root-in-a-patient-with-chronic-lumbar-degenerative-canal-stenosis
#14
Federico E Villafañe, Allison Harvey, Norman Kettner
Objective: The purpose of this case report is to describe the diagnostic imaging features of redundant nerve roots caused by chronic lumbar degenerative canal stenosis (CLDCS). Clinical Features: A 56-year-old male presented with severe low back pain. He experienced pain during minimal active lumbar range of motion. The patient demonstrated weakness of the right iliopsoas and hypoesthesia of the L-2 dermatome. A working diagnosis of CLDCS was established. The patient's worsening severe low back pain warranted magnetic resonance imaging of the lumbar spine, which was performed for further evaluation...
September 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29097290/in-vitro-evaluation-of-methylene-blue-removal-from-root-canal-after-photodynamic-therapy
#15
Karen Müller Ramalho, Sandra Ribeiro Cunha, Eric Mayer-Santos, Carlos de Paula Eduardo, Patricia Moreira de Freitas, Ana Cecilia Correa Aranha, Cacio Moura-Netto
In Endodontics, photosensitizers' such as methylene blue and toluidine blue have been used in photodynamic therapy due to their positive results. However, they can stain the dentin from the root canal after Photodynamic Therapy (PDT). The present in vitro study aimed to evaluate different stain removal protocols from root canal after PDT using methylene blue (MB) dye. After mechanical preparation of the root canal of 40 uni-radicular human teeth, PDT was performed using 0,01% MB with parameters of 3minutes of pre-irradiation and a diode laser irradiation emitting at 660nm, 40mW, 4minutes, 9...
October 30, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29090391/prevention-of-coronal-discoloration-induced-by-regenerative-endodontic-treatment-in-an-ex-vivo-model
#16
Noushin Shokouhinejad, Mehrfam Khoshkhounejad, Marzieh Alikhasi, Parisa Bagheri, Josette Camilleri
OBJECTIVES: The aim of this study was to assess the effect of sealing the pulp chamber walls with a dentin-bonding agent (DBA) on prevention of discoloration induced by regenerative endodontic procedures (REPs) in an ex vivo model. MATERIALS AND METHODS: Ninety-six bovine incisors were prepared and randomly divided into two groups. In one group, the pulp chamber walls were sealed with DBA before placement of triple antibiotic paste (TAP) containing minocycline inside the root canals, but in the other group, DBA was not applied...
October 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29082806/quality-aspects-of-ex-vivo-root-canal-treatments-done-by-undergraduate-dental-students-using-four-different-endodontic-treatment-systems
#17
Luise Jungnickel, Casper Kruse, Michael Vaeth, Lise-Lotte Kirkevang
OBJECTIVE: To evaluate factors associated with treatment quality of ex vivo root canal treatments performed by undergraduate dental students using different endodontic treatment systems. MATERIAL AND METHODS: Four students performed root canal treatment on 80 extracted human teeth using four endodontic treatment systems in designated treatment order following a Latin square design. Lateral seal and length of root canal fillings was radiographically assessed; for lateral seal, a graded visual scale was used...
October 29, 2017: Acta Odontologica Scandinavica
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/29078364/clinical-validation-of-a-nanodiamond-embedded-thermoplastic-biomaterial
#19
Dong-Keun Lee, Theodore Kee, Zhangrui Liang, Desiree Hsiou, Darron Miya, Brian Wu, Eiji Osawa, Edward Kai-Hua Chow, Eric C Sung, Mo K Kang, Dean Ho
Detonation nanodiamonds (NDs) are promising drug delivery and imaging agents due to their uniquely faceted surfaces with diverse chemical groups, electrostatic properties, and biocompatibility. Based on the potential to harness ND properties to clinically address a broad range of disease indications, this work reports the in-human administration of NDs through the development of ND-embedded gutta percha (NDGP), a thermoplastic biomaterial that addresses reinfection and bone loss following root canal therapy (RCT)...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29077680/complications-from-surgically-assisted-rapid-maxillary-expansion-with-haas-and-hyrax-expanders
#20
Max Domingues Pereira, Alexandre Fukuzo Koga, Gabriela Pereira Ribeiro Prado, Lydia Masako Ferreira
The current study aimed at comparing the number and type of undesired outcomes during and after the maxillary expansion performed with HYRAX and HAAS expanders. A total of 90 patients (41 males and 49 females, 45.6% and 54.4%, respectively) aged 18 to 59 (mean age of 26.1; standard deviation [SD] = 7.4) underwent subtotal Le Fort I osteotomy and pterygomaxillary disjunction following surgically assisted rapid maxillary expansion (SARME) carried out using HAAS (n = 29; 48.3% male and 51.7% female; mean age = 27: SD = 7...
October 26, 2017: Journal of Craniofacial Surgery
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