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https://www.readbyqxmd.com/read/27908285/prevalence-and-location-of-the-secondary-mesiobuccal-canal-in-1-100-maxillary-molars-using-cone-beam-computed-tomography
#1
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
https://www.readbyqxmd.com/read/27907239/dental-age-estimation-pattern-recognition-of-root-canal-widths-of-mandibular-molars-a-novel-mandibular-maturity-marker-at-the-18-year-threshold
#2
Graham J Roberts, Victoria S Lucas, Manoharan Andiappan, Fraser McDonald
The final stage of third molar development is used to assign a subject to above the 18-year threshold. Some subjects exhibiting this final stage are less than 18 years. Radiographs from 1000 females and 1000 males age 16.00-25.99 years were examined. Each half-year age band comprised 50 females and 50 males. Three categories of root canal widths (RCW) of the LL6, LL7, and LL8 [FDI 36, 37, and 38] were defined. Reproducibility was achieved by re-assessing the same subjects 12 months apart. For females, the minimum value for RCW-A was 16...
December 1, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27905673/single-versus-multiple-visits-for-endodontic-treatment-of-permanent-teeth
#3
REVIEW
Maddalena Manfredi, Lara Figini, Massimo Gagliani, Giovanni Lodi
BACKGROUND: Root canal treatment (RoCT), or endodontic treatment, is a common procedure in dentistry. The main indications for RoCT are irreversible pulpitis and necrosis of the dental pulp caused by carious processes, tooth cracks or chips, or dental trauma. Successful RoCT is characterised by an absence of symptoms (i.e. pain) and clinical signs (i.e. swelling and sinus tract) in teeth without radiographic evidence of periodontal involvement (i.e. normal periodontal ligament). The success of RoCT depends on a number of variables related to the preoperative condition of the tooth, as well as the endodontic procedures...
December 1, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27901556/apical-transportation-during-removal-of-root-canal-filling-with-different-retreatment-systems
#4
Baran C Sağlam, Ersan Çiçek, Mustafa M Koçak, Sibel Koçak, Bağdagül H Kıvanç
INTRODUCTION: This study aimed to compare apical transportation during retreatment using ProTaper Universal retreatment (PTUR), Mtwo R and D-RaCe instruments in curved root canals. METHODS: 36 extracted mandibular molar teeth with curved mesiobuccal roots were selected. The teeth were embedded into acrylic blocks. The blocks were fixed on the experimental setup. After determining the working length (WL), mesiobuccal canals were prepared with ProTaper Universal rotary instruments to size F1 (20/0...
November 29, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27898180/apical-negative-pressure-irrigation-versus-syringe-irrigation-a-systematic-review-of-cleaning-and-disinfection-of-the-root-canal-system
#5
REVIEW
E Konstantinidi, Z Psimma, L E Chávez de Paz, C Boutsioukis
The aim of this study was to systematically review and critically analyse the published data on the treatment outcome (primary outcome) and on the cleaning and disinfection of root canals (secondary outcomes) achieved by negative pressure irrigation as compared to syringe irrigation. An electronic search was conducted in EMBASE, LILACS, Pubmed, SciELO, Scopus, and Web of Knowledge using both free-text keywords and controlled vocabulary. Additional studies were sought through hand-searching of endodontic journals and of the relevant chapters of endodontic textbooks...
November 28, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27898177/a-mechanism-for-sequence-specificity-in-plant-mediated-interactions-between-herbivores
#6
Wei Huang, Christelle A M Robert, Maxime R Hervé, Lingfei Hu, Zoe Bont, Matthias Erb
Herbivore communities are shaped by indirect plant-mediated interactions whose outcomes are strongly dependent on the sequence of herbivore arrival. However, the mechanisms underlying sequence specificity are poorly understood. We examined the mechanisms that govern sequence-specific effects of the interaction between two specialist maize herbivores, the leaf feeder Spodoptera frugiperda and the root feeder Diabrotica virgifera virgifera. In the field, S. frugiperda reduces D. v. virgifera abundance, but only when it arrives on the plant first...
November 29, 2016: New Phytologist
https://www.readbyqxmd.com/read/27895867/detection-of-second-mesiobuccal-canals-in-maxillary-first-molars-using-a-new-angle-of-cone-beam-computed-tomography
#7
Ali Murat Aktan, Cihan Yildirim, Emre Culha, Erhan Demir, Mehmet Ertugrul Ciftci
BACKGROUND: The localization of the additional canal orifice is one of the primary factors influencing the success of endodontic treatment. To deal with this problem, several techniques that each have their own advantages and disadvantages have been discussed in the literature. OBJECTIVES: The aim of the present in vitro study was to review a new approach to localizing second mesiobuccal (MB2) canals in maxillary first molars using cone beam computed tomography (CBCT)...
October 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27895347/comparison-of-fracture-and-deformation-in-the-rotary-endodontic-instruments-protaper-versus-k-3-system
#8
Sana Ehsen Nagi, Farhan Raza Khan, Munawar Rahman
This experimental study was done on extracted human teeth to compare the fracture and deformation of the two rotary endodontic files system namely K-3 and Protapers. It was conducted at the dental clinics of the Aga Khan University Hospital, Karachi, A log of file deformation or fracture during root canal preparation was kept. The location of fracture was noted along with the identity of the canal in which fracture took place. The fracture in the two rotary systems was compared. SPSS 20 was used for data analysis...
March 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27893752/effect-of-butyrate-on-collagen-expression-cell-viability-cell-cycle-progression-and-related-proteins-expression-of-mg-63-osteoblastic-cells
#9
Mei-Chi Chang, Yi-Ling Tsai, Eric Jein-Wein Liou, Chia-Mei Tang, Tong-Mei Wang, Hsin-Cheng Liu, Ming-Wei Liao, Sin-Yuet Yeung, Chiu-Po Chan, Jiiang-Huei Jeng
AIMS: Butyric acid is one major metabolic product generated by anaerobic Gram-negative bacteria of periodontal and root canal infection. Butyric acid affects the activity of periodontal cells such as osteoblasts. The purposes of this study were to investigate the effects of butyrate on MG-63 osteoblasts. METHODS: MG-63 cells were exposed to butyrate and cell viability was estimated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The mRNA and protein expression of type I collagen and cell cycle-related proteins were measured by reverse-transcriptase polymerase chain reaction (RT-PCR), western blotting or immunofluorescent staining...
2016: PloS One
https://www.readbyqxmd.com/read/27892626/withdrawn-root-canal-posts-for-the-restoration-of-root-filled-teeth
#10
REVIEW
Marc Bolla, Michele Muller-Bolla, Cybele Borg, Laurence Lupi-Pegurier, Olivier Laplanche, Eric Leforestier
BACKGROUND: The foundation for the reconstruction of endodontically-treated teeth can be provided by a metal or a non-metal post and core system but no guidelines exist for choosing one or the other in particular clinical cases. OBJECTIVES: To assess the effectiveness of different post and core systems for the restoration of endodontically-treated teeth. The primary objective of this review was to compare the clinical failure rates of the different types of posts...
November 28, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27891479/bilateral-three-rooted-mandibular-premolars-and-four-rooted-mandibular-first-and-second-molar-a-rare-anatomical-variant
#11
Mrunal Manohar Shinde, Sharad Basavraj Kamat, Rutuja Vijay Chopade
The mandibular premolars and molars exhibit wide variations in the form of roots and root canals. A bilateral symmetry of three rooted mandibular first and second premolar and four rooted mandibular first and second molar in a same patient is a rare entity and one such case is presented in this case report.
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891476/anti-bacterial-effectiveness-of-electro-chemically-activated-eca-water-as-a-root-canal-irrigant-an-in-vitro-comparative-study
#12
S Lata, Soumya Kanta Mohanty, Prasanti Kumari Pradhan, Gaurav Patri, Sachidananda Prasad Sinha, Pratik Agrawal
INTRODUCTION: Sodium hypochlorite, is the irrigant of choice for many clinicians, but its strong toxic and damaging effects on vital periapical tissues is always a matter of concern. So, the search for a root canal irrigant with a broad antimicrobial spectrum yet with a limited toxicity on vital tissues is always desirable. AIM: The study evaluated antimicrobial efficacy of Electro-Chemically Activated (ECA) water as a root canal irrigant against E. faecalis. MATERIALS AND METHODS: Forty eight single rooted human teeth were decoronated to a length of 15mm...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891459/comparison-of-antibacterial-efficacy-of-turmeric-extract-morinda-citrifolia-and-3-sodium-hypochlorite-on-enterococcus-faecalis-an-in-vitro-study
#13
Bathula Vimala Chaitanya, Kusum Valli Somisetty, Abhinav Diwan, Shiraz Pasha, Nandaprasad Shetty, Yashwanth Reddy, Shankar Nadigar
INTRODUCTION: Sodium hypochlorite (NaOCl), the most commonly used irrigant, has many potential properties like its unique ability to dissolve pulp tissue, excellent antimicrobial activity, but has a cytotoxic effect when injected into periapical tissues. It is also known to produce allergic reactions, foul smell and taste, and potential for corrosion. Facultative organisms such as Enterococcus faecalis and aerobes like Staphylococcus aureus are considered to be the most resistant species and one of the possible causes of root canal treatment failure...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891318/complication-of-improper-management-of-sodium-hypochlorite-accident-during-root-canal-treatment
#14
Fatemah Faras, Fawaz Abo-Alhassan, Abdullah Sadeq, Hisham Burezq
Sodium Hypochlorite (NaOCl) is a common irrigation solution used in root canal treatment. It has strong antibacterial and tissue dissolving properties. Nevertheless, it has some serious complications, some of which are life-threatening. A young male presented with severe chemical burn of the right infraorbital area and partial necrosis of the hard palate resulting from extrusion of NaOCl during root canal treatment of the upper right 2(nd) molar tooth. The patient had a facial scar, and mucosal damage healed nearly completely...
September 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/27885586/an-in-vitro-comparison-of-three-delivery-techniques-for-obturation-of-root-canals-in-primary-molars
#15
T Walia, A H Ghanbari, S Mathew, A H Ziadlou
AIM: This in vitro study evaluated the efficacy of three different obturation techniques with regards to quality of two filling pastes-Ca(OH)2/iodoform syringe paste and zinc oxide eugenol paste in primary molars. METHODS: Root canals of 45 extracted primary molars were prepared and randomly divided into three groups of 15 teeth each. Group A-canals were filled with Ca(OH)2/iodoform syringe paste, Group B-zinc oxide eugenol paste with handheld lentulo spiral and Group C-zinc oxide eugenol paste with rotary lentulo spiral...
November 24, 2016: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27885288/correlation-between-clinical-features-and-magnetic-resonance-imaging-findings-in-lumbar-disc-prolapse
#16
S S Thapa, R B Lakhey, P Sharma, R K Pokhrel
BACKGROUND: Magnetic resonance imaging is routinely done for diagnosis of lumbar disc prolapse. Many abnormalities of disc are observed even in asymptomatic patient.This study was conducted tocorrelate these abnormalities observed on Magnetic resonance imaging and clinical features of lumbar disc prolapse. METHODS: A This prospective analytical study includes 57 cases of lumbar disc prolapse presenting to Department of Orthopedics, Tribhuvan University Teaching Hospital from March 2011 to August 2012...
May 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/27883205/root-and-root-canal-morphology-of-the-permanent-dentition-in-a-caucasian-population-a-cbct-study
#17
J N R Martins, D Marques, A Mata, J Caramês
AIM: To investigate in vivo the number of roots, the root canal system configuration and the root canal splitting and merging levels in the permanent dentition of a Caucasian population. METHODOLOGY: A total of 11,892 teeth were inspected in Cone Beam Computed Tomography examinations that were collected from a pre-existing database. The number of roots was identified, and canal configurations were classified according to Vertucci's classification and its supplemental configurations...
November 24, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27882250/apical-revascularization-after-delayed-tooth-replantation-an-unusual-case
#18
Marília Pacífico Lucisano, Paulo Nelson-Filho, Lea Assed Bezerra Silva, Raquel Assed Bezerra Silva, Fabricio Kitazono de Carvalho, Alexandra Mussolino de Queiroz
The aim of this paper is to present the clinical and radiological outcome of the treatment involving a delayed tooth replantation after an avulsed immature permanent incisor, with a follow-up of 1 year and 6 months. An 8-year-old boy was referred after dental trauma that occurred on the previous day. The permanent maxillary right central incisor (tooth 11) had been avulsed. The tooth was hand-held during endodontic therapy and an intracanal medication application with calcium hydroxide-based paste was performed...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27882119/bactericidal-effect-of-plasma-jet-with-helium-flowing-through-3-hydrogen-peroxide-against-enterococcus-faecalis
#19
Xin-Cai Zhou, Yu-Lan Li, De-Xi Liu, Ying-Guang Cao, Xin-Pei Lu
The aim of the present study was to assess the antimicrobial activity of plasma jet with helium (He) flowing through 3% hydrogen peroxide in root canals infected with Enterococcus faecalis. A total of 42 single-rooted anterior teeth were prepared, sterilized, inoculated with an E. faecalis suspension and incubated for 7 days. Next, the teeth were randomly divided into six experimental groups (including groups treated by plasma jet with or without He for different time durations) and one control group treated without plasma...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27873521/a-case-of-recurrent-urticaria-due-to-formaldehyde-release-from-root-canal-disinfectant
#20
Ji Hoon Jang, Seung Hyun Park, Hang Jea Jang, Sung Geun Lee, Jin Han Park, Jae Won Jeong, Chan Sun Park
Although formaldehyde is well known to cause type 4 hypersensitivity, immunoglobulin E (IgE)-mediated hypersensitivity to formaldehyde is rare. Here, we report a case of recurrent generalized urticaria after endodontic treatment using a para-formaldehyde (PFA)-containing root canal sealant and present a review of previous studies describing cases of immediate hypersensitivity reactions to formaldehyde. A 50-year-old man visited our allergy clinic for recurrent generalized urticaria several hours after endodontic treatment...
January 2017: Yonsei Medical Journal
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