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https://www.readbyqxmd.com/read/29061352/a-cone-beam-computed-tomographic-study-of-root-and-canal-morphology-of-maxillary-first-and-second-permanent-molars-in-a-thai-population
#1
Roserin Ratanajirasut, Anchana Panichuttra, Soontra Panmekiate
INTRODUCTION: Understanding tooth anatomy is crucial for effective endodontic treatment. This study investigated the roots and root canal morphology of maxillary first and second permanent molars in a Thai population using cone-beam computed tomographic (CBCT) imaging. METHODS: This study evaluated 476 maxillary first molars and 457 maxillary second molars receiving CBCT examination and determined the number of roots and canal morphology according to Vertucci's classification, and the prevalence of a second mesiobuccal (MB2) canal in the mesiobuccal (MB) root was correlated with sex, age, and tooth side...
October 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29032819/assessment-of-the-second-mesiobuccal-root-canal-in-maxillary-first-molars-a-cone-beam-computed-tomographic-study
#2
Yuerong Zhang, Hai Xu, Dongmiao Wang, Yongchun Gu, Juan Wang, Shuzhen Tu, Xiaohui Qiu, Fuyu Zhang, Yao Luo, Shi Xu, Jianling Bai, Grandini Simone, Guangdong Zhang
INTRODUCTION: The purpose of this study was to investigate the incidence and location of the second mesiobuccal (MB2) root canal of the maxillary first molar and the relationship between the presence of an MB2 canal and the distribution of canal orifices on the pulpal floor with the aid of cone-beam computed tomographic (CBCT) technology. METHODS: A total of 1008 maxillary first molars (548 patients) were randomly selected and analyzed through CBCT imaging. The association between the incidence of MB2 canals and potential impacting factors including sex, side, age, and the distribution of the main root canal orifices on the pulpal floor was explored...
October 9, 2017: Journal of Endodontics
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
#3
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/28874634/root-canal-morphologies-of-mesiobuccal-roots-of-maxillary-molars-using-cone-beam-computed-tomography-and-periapical-radiographic-techniques-in-an-iranian-population
#4
Vahid Zand, Hadi Mokhtari, Hamid Rm Zonouzi, Sahand N Shojaei
AIM: The aim of this study was to evaluate the accuracy of the results of cone beam computed tomography (CBCT) examinations, confirm the presence or absence of the second mesiobuccal (MB2) root canal in maxillary first and second molars, estimate the distance between the root canal orifices, observe the root types based on Vertucci classification system, and make comparisons between CBCT and periapical techniques in relation to the identification of the root canal form and the second root canal of the MB root...
September 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28839484/evaluation-of-distolingual-canal-roots-in-mandibular-molars-and-mesiobuccal-canals-in-maxillary-molars-by-cbct
#5
Filiz Namdar Pekiner, M Oğuz Borahan, Asım Dumlu
BACKGROUND/PURPOSE: The objectives of this study were to identify the bilateral distolingual (DL) canals / roots of the mandibular first molars and second mesiobuccal (MB2) canals of the maxillary first molars in the same Turkish individuals using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: A total of 150 CBCT images including all mandibular and maxillary first molars were retrospectively investigated in a Turkish subpopulation. The patient age, sex and presence of roots and root canals were assessed...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28808452/root-morphology-and-canal-configuration-of-first-and-second-maxillary-molars-in-a-selected-iranian-population-a-cone-beam-computed-tomography-evaluation
#6
Abbasali Khademi, Asieh Zamani Naser, Zahra Bahreinian, Mojdeh Mehdizadeh, Mojtaba Najarian, Saber Khazaei
INTRODUCTION: The aim of this investigation was to evaluate root canal morphology of maxillary first and second molars and also to assess the prevalence and morphology of the second mesiobuccal canal (MB2) in these teeth, using cone-beam computed tomography (CBCT). METHODS AND MATERIALS: In this cross-sectional study, the total of 470 CBCT images from the archive of Radiology Department of Isfahan University of Medical Sciences (IUMS), Iran, was evaluated and 295 images were selected...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28804693/the-ability-of-reciproc-instruments-to-reach-full-working-length-without-glide-path-preparation-a-clinical-retrospective-study
#7
Andreas Bartols, Bernt-Peter Robra, Winfried Walther
BACKGROUND: Reciproc instruments are the only contemporary root canal instruments where glide path preparation is no longer strictly demanded by the manufacturer. As the complete preparation of root canals is associated with success in endodontic treatment we wanted to assess the ability and find predictors for Reciproc instruments to reach full working length (RFWL) in root canals of maxillary molars in primary root canal treatment (1°RCTx) and retreatment (2°RCTx) cases. METHODS: This retrospective study evaluated 255 endodontic treatment cases of maxillary molars...
2017: PeerJ
https://www.readbyqxmd.com/read/28745882/monomeric-16-electron-%C3%AF-diborene-complexes-of-zn-ii-and-cd-ii
#8
Sunewang R Wang, Merle Arrowsmith, Holger Braunschweig, Rian D Dewhurst, Michael Dömling, James D Mattock, Conor Pranckevicius, Alfredo Vargas
Despite the prevalence of stable π-complexes of most d(10) metals, such as Cu(I) and Ni(0), with ethylene and other olefins, complexation of d(10) Zn(II) to simple olefins is too weak to form isolable complexes due to the metal ion's limited capacity for π-backdonation. By employing more strongly donating π-ligands, namely neutral diborenes with a high-lying π(B═B) orbital, monomeric 16-electron M(II)-diborene (M = Zn, Cd) π-complexes were synthesized in good yields. Metal-B2 π-interactions in both the solid and solution state were confirmed by single-crystal X-ray analyses and their solution NMR and UV-vis absorption spectroscopy, respectively...
August 1, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28735796/prevalence-of-second-mesiobuccal-canals-in-maxillary-first-molars-detected-using-cone-beam-computed-tomography-direct-occlusal-access-and-coronal-plane-grinding
#9
Brent M Hiebert, Kenneth Abramovitch, Dwight Rice, Mahmoud Torabinejad
INTRODUCTION: The purpose of this study was to determine the prevalence of the second mesiobuccal canal (MB2) in 100 maxillary first molars using 3 independent methods and a combination method. METHODS: One hundred extracted human maxillary first molars were collected. The teeth were mounted in the maxillary first molar extraction sockets of a human cadaver head. A cone-beam computed tomographic (CBCT) scan was taken of each tooth. Two radiology faculty independently evaluated the CBCT volume for the presence of an MB2 canal...
October 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28571296/maxillary-second-molar-with-fused-root-and-six-canals-a-case-report
#10
Mitthra Suresh, Kittappa Karthikeyan, Sekar Mahalaxmi
One of the known aberrations in root canal morphology of maxillary second permanent molars is the presence of collateral mesiobuccal canals. This case report describes the endodontic management of a maxillary second molar that had a single fused root with six canals that was successfully managed with the aid of dental operating microscope. Six canal orifices were located namely MB1 (Mesiobuccal), MB2, MB3, DB1 (Distobuccal), DB2 and palatal. During the cleaning and shaping, instrument separation occurred at the apical third of the palatal canal which was removed with ultrasonics...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28351286/root-and-canal-morphology-of-maxillary-second-molars-by-cone-beam-computed-tomography-in-a-native-chinese-population
#11
Daming Wu, Guangdong Zhang, Ruizhen Liang, Guangchao Zhou, Younong Wu, Chao Sun, Wei Fan
Objective To evaluate the root and root canal morphology of the maxillary second molars (MSMs) in a native Chinese population by cone-beam computed tomography. Methods Cone-beam computed tomography images of 2412 MSMs from 1294 Chinese patients were analyzed to determine the number and morphology of the roots, the root canal morphology, the bilateral symmetry, and the correlations of these parameters with sex and age. Results The percentage of fused roots increased with age, while the percentage of fused roots in women was higher than that in men...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28292597/the-effect-of-the-dental-operating-microscope-on-the-outcome-of-nonsurgical-root-canal-treatment-a-retrospective-case-control-study
#12
Navid Khalighinejad, Anita Aminoshariae, James C Kulild, Kristin A Williams, Jeannie Wang, Andre Mickel
INTRODUCTION: The aim of the current investigation was to assess the effect of the use of a dental operating microscope on the outcome of nonsurgical root canal treatment (NS RCT) while treating the mesiobuccal (MB) root of the maxillary first molar. METHODS: This retrospective investigation included endodontically treated maxillary first molars (ETMs) with apparent adequate previous NS RCT and restorations referred for endodontic retreatment at the endodontic graduate clinic...
March 11, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28194366/maxillary-first-molar-with-7-root-canals-diagnosed-using-cone-beam-computed-tomography
#13
Evaldo Rodrigues, Antônio Henrique Braitt, Bruno Ferraz Galvão, Emmanuel João Nogueira Leal da Silva
Root canal anatomy is complex, and the recognition of anatomic variations could be a challenge for clinicians. This case report describes the importance of cone beam computed tomographyic (CBCT) imaging during endodontic treatment. A 23 year old woman was referred by her general dental practitioner with the chief complaint of spontaneous pain in her right posterior maxilla. From the clinical and radiographic findings, a diagnosis of symptomatic irreversible pulpitis was made and endodontic treatment was suggested to the patient...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28149463/a-cone-beam-computed-tomography-cbct-evaluation-of-mb2-canals-in-endodontically-treated-permanent-maxillary-molars-a-retrospective-study-in-indian-population
#14
Heeresh Shetty, Subodh Sontakke, Freny Karjodkar, Pankaj Gupta, Ashish Mandwe, K S Banga
BACKGROUND: Current technological advances have allowed application of different study designs and techniques for investigation of dental anatomy. Some clinical studies have provided evidence that Cone Beam computed tomography (CBCT) scanning is an important resource in assessment of root canal systems notably to identify MB2 canals in maxillary molars as CBCT scans allow in vivo dental investigation in axial, sagittal and coronal planes simultaneously. The current study was undertaken to detect and evaluate filled/unfilled MB2 canals in endodontically treated, asymptomatic maxillary molars utilizing cone beam computed tomography (CBCT)...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28106044/root-canal-morphology-and-configuration-of-123-maxillary-second-molars-by-means-of-micro-ct
#15
Thomas Gerhard Wolf, Frank Paqué, Anja-Christin Woop, Brita Willershausen, Benjamín Briseño-Marroquín
The aim of this study was to investigate the root canal configuration, accessory canals and number of main foramina of 123 maxillary second molars by means of micro-computed tomography. The teeth were scanned and reproduced with 3D software imaging. The root canal configuration and number of main foramina were evaluated by means of a four-digit system. The morphological complexity of human maxillary second molars is depicted by the number of accessory and connecting canals. The most frequently observed root canal configurations in the mesiobuccal root were 2-2-2/2 (19...
March 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28097063/interferon-%C3%AE-responses-to-plasmodium-falciparum-vaccine-candidate-antigens-decrease-in-the-absence-of-malaria-transmission
#16
Cyrus Ayieko, Bilha S Ogola, Lyticia Ochola, Gideon A M Ngwena, George Ayodo, James S Hodges, Gregory S Noland, Chandy C John
BACKGROUND: Malaria elimination campaigns are planned or active in many countries. The effects of malaria elimination on immune responses such as antigen-specific IFN- γ responses are not well characterized. METHODS: IFN- γ responses to the P. falciparum antigens circumsporozoite protein, liver stage antigen-1, thrombospondin-related adhesive protein, apical membrane antigen-1, MB2, and merozoite surface protein-1 were tested by ELISA in 243 individuals in highland Kenya in April 2008, October 2008, and April 2009, after a one-year period of interrupted malaria transmission from April 2007 to March 2008...
2017: PeerJ
https://www.readbyqxmd.com/read/28094878/characterization-of-cellulose-degrading-bacteria-from-the-larval-gut-of-the-white-grub-beetle-lepidiota-mansueta-coleoptera-scarabaeidae
#17
Gautam Handique, Amrita Phukan, Badal Bhattacharyya, Abu Adil Lutful Haque Baruah, Syed Wasifur Rahman, Rajen Baruah
The goal of this study is to identify and characterize the cellulose degrading microorganisms in the larval gut of the white grub beetle, Lepidiota mansueta. Thirty bacterial strains were isolated and tested for cellulolytic activity using soluble carboxymethyl cellulose (CMC) degrading assays. Of these strains, five (FGB1, FB2, MB1, MB2, and HB1) degrade cellulose. Cellulolytic activity was determined based on formation of clear zone and cellulolytic index on CMC plate media. The highest cellulolytic index (2...
February 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/27994970/in-vitro-gastrointestinal-digestion-study-of-a-novel-bio-tofu-with-special-emphasis-on-the-impact-of-microbial-transglutaminase
#18
Guangliang Xing, Xin Rui, Mei Jiang, Yu Xiao, Ying Guan, Dan Wang, Mingsheng Dong
We have developed a novel bio-tofu, made from mixed soy and cow milk (MSCM), using Lactobacillus helveticus MB2-1 and Lactobacillus plantarum B1-6 incorporated with microbial transglutaminase (MTGase) as coagulant. MTGase was added to improve the textural properties and suit for cooking. However, the effect of MTGase on the digestion of mixed-protein fermented by lactic acid bacteria was unclear. This study aimed at evaluating the effect of MTGase on protein digestion of bio-tofu under simulated gastrointestinal digestion condition...
2016: PeerJ
https://www.readbyqxmd.com/read/27977863/cbct-uses-in-clinical-endodontics-the-effect-of-cbct-on-the-ability-to-locate-mb2-canals-in-maxillary-molars
#19
J Parker, A Mol, E M Rivera, P Tawil
AIM: To determine whether a CBCT volume can aid in the location of MB2 canals in maxillary molars. METHODOLOGY: This prospective clinical study involved 50 patients that needed RCT on a maxillary molar. The teeth where the MB2 was located upon access with the dental operating microscope received routine root canal treatment, and teeth where MB2 was not located had a CBCT volume made after instrumenting the located canals. At the second appointment, the clinician used the aid of the CBCT volume and troughing to attempt to locate MB2...
December 15, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27908285/prevalence-and-location-of-the-secondary-mesiobuccal-canal-in-1-100-maxillary-molars-using-cone-beam-computed-tomography
#20
Pablo Betancourt, Pablo Navarro, Gonzalo Muñoz, Ramón Fuentes
BACKGROUND: Several articles have used cone beam computed tomography (CBCT) to study the morphology of the maxillary molars and to ascertain its ability to visualize the second mesiobuccal canal (MB2); however, its geometric location has not been examined in depth. The aim of this study was to describe in vivo the prevalence and location of the MB2 in the mesiobuccal root of the first maxillary molar (1MM) and the second maxillary molar (2MM) through CBCT imaging. METHODS: Five hundred fifty CBCT images of the 1MM and 550 of the 2MM were analyzed...
December 1, 2016: BMC Medical Imaging
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