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https://www.readbyqxmd.com/read/28214018/assessment-of-root-canal-filling-removal-effectiveness-using-micro-computed-tomography-a-systematic-review
#1
REVIEW
Giampiero Rossi-Fedele, Hany Mohamed Aly Ahmed
INTRODUCTION: The removal of obturation materials from the root canal system is a primary objective in root canal retreatment procedures. This systematic review aims to discuss the effectiveness of different instrumentation procedures in removing root-canal filling materials assessed by micro-computed tomography. METHODS: An electronic search in PubMed and major endodontic journals was conducted using appropriate key words to identify investigations that examined the effectiveness of obturation material removal assessed by micro-computed tomography...
February 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28213963/ultrastructure-of-compatible-and-incompatible-interactions-in-phloem-sieve-elements-during-the-stylet-penetration-by-cotton-aphids-in-melon
#2
Elisa Garzo, Mercedes Fernández-Pascual, Cesar Morcillo, Alberto Fereres, M Luisa Gómez-Guillamón, W Fred Tjallingii
Resistance of the melon line TGR-1551 to the aphid Aphis gossypii is based on preventing aphids from ingesting phloem sap. In electrical penetration graphs (EPGs), this resistance has been characterized with A. gossypii showing unusually long phloem salivation periods (waveform E1) mostly followed by pathway activities (waveform C) or if followed by phloem ingestion (waveform E2), ingestion was not sustained for more than 10 minutes. Stylectomy with aphids on susceptible and resistant plants was performed during EPG recording while the stylet tips were phloem inserted...
February 18, 2017: Insect Science
https://www.readbyqxmd.com/read/28213764/presence-of-root-canal-treatment-has-no-influence-on-periodontal-bone-loss
#3
Fabiola-Regina Rodriguez, Nadine Paganoni, Peter Eickholz, Roland Weiger, Clemens Walter
AIM: The aim of this study was to compare the interproximal bone level at root canal-filled teeth and non-root canal-filled teeth. MATERIALS AND METHODS: The records of patients from the department were consecutively screened from January 2009 to October 2011. The distance between the coronal reference point to the alveolar bone crest (AC) was assessed at the mesial and distal aspects of root canal-filled teeth (RCF+) and their contralateral non-root canal-filled teeth (RCF-) on periapical radiographs...
February 17, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28213677/a-new-distribution-range-of-ateles-chamek-humboldt-1812-in-an-ecotone-of-three-biomes-in-the-paraguay-river-basin
#4
Manoel Dos Santos-Filho, Christine Steiner São Bernardo, Henry Willian Van der Laan Barbosa, Almério Câmara Gusmão, Leandro Jerusalinsky, Gustavo Rodrigues Canale
Historical records of Ateles chamek (black-faced black spider monkey) suggest that the species range extends further south of the known species distribution, within an ecotonal region between the Amazonia, Cerrado and Pantanal biomes in Brazil. Ecotones are zones of habitat transition with high species richness that remain undersampled as conservationists often prioritize biodiversity hotspots. Thus, distribution ranges may be inaccurately measured when species occur in ecotonal zones. We report the first precise records of A...
February 17, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28213066/inguinal-lymph-node-presenting-as-the-delayed-site-of-metastasis-in-early-stage-endometrial-carcinoma-case-report
#5
Shomaila Amir M Akbar, Mutahir A Tunio, Wafa AlShakweer, AbdulAziz AlObaid, Mushabbab AlAsiri
INTRODUCTION: Inguinal lymph nodes are the frequent sites of metastasis for malignant lymphoma, squamous cell carcinoma of anal canal, vulva and penis, malignant melanoma and squamous cell carcinoma of skin over lower extremities or trunk. Anatomically, endometrial carcinoma is less likely to spread to the superficial or deep inguinal lymph nodes, thus metastatic involvement of these lymph nodes can easily be overlooked. CASE PRESENTATION: Here-in we report a case of a 65-year old Saudi morbid obese female, who presented with left inguinal lymphadenopathy as initial delayed site of metastasis almost 19 months after the initial treatment for FIGO IA endometrial carcinoma...
January 19, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28212886/primary-ameloblastoma-of-the-temporal-bone
#6
Andro Košec, Jakov Ajduk, Mihael Ries, Robert Trotić
Ameloblastoma is a locally aggressive tumor derived from odontogenic epithelium. Although benign, its clinical behavior can often exhibit malignant characteristics. It is marked by slow and persistent growth with infiltration of adjacent tissues. Almost 70% occur in the mandible in patients older than 30 years. Recurrence of ameloblastoma from inadequate treatment is frequent. Because of its slow growth, recurrences can present decades after primary surgery. A primary ameloblastoma in an area outside the mandibular, maxillary, and infratemporal fossa regions has not been described in detail to date, with only 1 possible case mentioned in the literature...
January 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28212784/intraspinal-extradural-variations-of-nerve-roots
#7
Viktor Matejčík, Zora Haviarová, Andrej Šteňo, Roman Kuruc, Juraj Šteňo
INTRODUCTION: The aim of this work is to point out the intraspinal extradural anatomical variations of nerve roots and their possible participation in radiculopathy. METHODS: The anatomical study was performed in 33 cadavers at a mean age of 46.5 and up to 24h from death. All extradural anastomoses between nerve roots were excised and examined histologically for the presence or absence of nervous tissue. The type of the plexus was defined by subtracting from the root C2...
February 14, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28212456/influence-of-posterior-mandibular-dimensions-on-alveolar-bone-microarchitecture
#8
Alberto Monje, Yiqun Wu, Wei Huang, Wenjie Zhou, Pablo Galindo-Moreno, Jesus Montanero-Fernandez, Rachel A Sheridan, Hom-Lay Wang, Feng Wang
PURPOSE: The aim of this study was to investigate the influence of posterior mandibular dimensions (height and width at various levels) on alveolar bone microarchitecture using microcomputed tomography (micro-CT). MATERIALS AND METHODS: Partially edentulous subjects with one missing molar were included in the study. A bone core biopsy was performed at the site of planned implant surgery. For each patient, alveolar morphologic and architectural characteristics were analyzed using cone beam computed tomography (CBCT) and micro-CT imaging...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28211835/how-many-days-are-required-for-workers-to%C3%A2-acclimatize-to-heat
#9
Tamer Mohamed Khalaf, Mohamed Zaki Ramadan, Riyad A Al-Ashaikh
BACKGROUND: Many research studies require recruiting heat-acclimatized workers to participate in heat-stress experiments and application fields. A reliable heat acclimatization program for workers in countries with hot environments has not been reported yet. OBJECTIVE: The objective of this study was to estimate the effects of heat stress and the amount of acclimatization required in hot-climate countries. METHODS: Eighteen male workers from an industrial population participated in this experiment...
February 17, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28211263/increased-regurgitant-flow-causes-endocardial-cushion-defects-in-an-avian-embryonic-model-of-congenital-heart-disease
#10
Stephanie M Ford, Matthew T McPheeters, Yves T Wang, Pei Ma, Shi Gu, James Strainic, Christopher Snyder, Andrew M Rollins, Michiko Watanabe, Michael W Jenkins
BACKGROUND: The relationship between changes in endocardial cushion and resultant congenital heart diseases (CHD) has yet to be established. It has been shown that increased regurgitant flow early in embryonic heart development leads to endocardial cushion defects, but it remains unclear how abnormal endocardial cushions during the looping stages might affect the fully septated heart. The goal of this study was to reproducibly alter blood flow in vivo and then quantify the resultant effects on morphology of endocardial cushions in the looping heart and on CHDs in the septated heart...
February 17, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28211157/unravelling-intravertebral-integration-modularity-and-disparity-in-felidae-mammalia
#11
Marcela Randau, Anjali Goswami
Morphological integration and modularity, which describe the relationships among morphological attributes and reflect genetic, developmental, and functional interactions, have been hypothesized to be major influences on trait responses to selection and thus morphological evolution. The mammalian presacral vertebral column shows little variation in vertebral count and therefore specialization for function occurs primarily through modification of vertebral shape. However, vertebral shape has been suggested to be under strong control from developmental canalization, although this has never been explicitly tested...
February 17, 2017: Evolution & Development
https://www.readbyqxmd.com/read/28210446/differences-between-panoramic-and-cone-beam-ct-in-the-surgical-evaluation-of-lower-third-molars
#12
Ruggero Rodriguez Y Baena, Riccardo Beltrami, Angelo Tagliabo, Silvana Rizzo, Saturnino-Marco Lupi
BACKGROUND: The aim of this study was to evaluate the ability to identify the contiguity between the root of the mandibular third molar and the mandibular canal (MC) in panoramic radiographs compared with Cone Beam-CT. MATERIAL AND METHODS: Panoramic radiographs of 326 third molars and CBCT radiographs of 86 cases indicated for surgery and considered at risk were evaluated. The following signs were assessed in panoramic radiographs as risk factors: radiolucent band, loss of MC border, change in MC direction, MC narrowing, root narrowing, root deviation, bifid apex, superimposition, and contact between the root third molar and the MC...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210445/evaluation-of-conventional-protaper-hand-and-protaper-rotary-instrumentation-system-for-apical-extrusion-of-debris-irrigants-and-bacteria-an-in-vitro-randomized-trial
#13
Pinky Kalra, Arathi Rao, Ethel Suman, Ramya Shenoy, Baranya-Shrikrishna Suprabha
BACKGROUND: Endodontic instrumentation carries the risk of over extrusion of debris and bacteria. The technique used and the type of instrumentation influences this risk. AIM: The purpose of this study was to evaluate and compare the K-file, ProTaper hand and ProTaper rotary instrumentation systems for the amount of apically extruded debris, irrigant solution and intracanal bacteria. DESIGN: Experimental single blinded randomized type of in vitro study with sample of 30 single rooted teeth...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210439/effect-of-endoactivator-and-er-cr-ysgg-laser-activation-of-qmix-as-final-endodontic-irrigant-on-sealer-penetration-a-confocal-microscopic-study
#14
Sarika Chaudhry, Sudha Yadav, Sangeeta Talwar, Mahesh Verma
BACKGROUND: Through chemomechanical debridement of the root canal is a primary requisite for successful endodontic therapy. Thus the aim of this study was to evaluate the effects of using QmiX alone, QmiX with EndoActivator and QmiX with Er,Cr:YSGG laser for final irrigation on sealer penetration into the dentinal tubules. MATERIAL AND METHODS: 75 extracted human mandibular premolar teeth were treated with sodium hypochlorite (NaOCl) irrigation. The samples were divided into 5 groups according to the final irrigation solution used: (1) 17% EDTA and 2...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210431/vertical-root-fracture-resistance-of-simulated-immature-permanent-teeth-filled-with-mta-using-different-vehicles
#15
Hacer Aksel, Sevinc Askerbeyli-Örs, Derya Deniz-Sungur
BACKGROUND: The aim of the study is to evaluate the resistance vertical root fracture (VRF) of mineral trioxide aggregate (MTA) filled-immature permanent roots by using three different vehicles. MATERIAL AND METHODS: Forty-extracted human single-rooted mandibular premolars were selected and the root length was standardized to the length of 9 mm. For simulation of immature tooth apices, peeso reamers were introduced into the root canals and the prepared roots were assigned into three experimental groups according the used vehicle (distilled water-DW, prophylene glycol-PG, chlorhexidine-CHX) and control group (n=10)...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210404/infraorbital-nerve-decompression-for-infraorbital-neuralgia-causalgia-following-blowout-orbital-fractures-a-case-series
#16
Bijan Beigi, Mazda Beigi, Nuwan Niyadurupola, Manuel Saldana, Nabil El-Hindy, Deepak Gupta
The purpose of this study was to present the management of a series of patients referred with infraorbital nerve paraesthesia that developed after insignificant orbital floor fracture without diplopia or exophthalmos, and that did not require initial surgical repair. This is a retrospective interventional case series. The main outcome and measures were assessment of preoperative symptoms including neuralgia and sensory symptoms; review of periorbital computed tomography (CT) scans; and assessment of postoperative effects of surgery for infraorbital nerve decompression...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28210204/physicochemical-properties-of-epoxy-resin-based-and-bioceramic-based-root-canal-sealers
#17
Ju Kyung Lee, Sang Won Kwak, Jung-Hong Ha, WooCheol Lee, Hyeon-Cheol Kim
Three bioceramic sealers (EndoSequence BC sealer, EndoSeal MTA, and MTA Fillapex) and three epoxy resin-based sealers (AH-Plus, AD Seal, and Radic-Sealer) were tested to evaluate the physicochemical properties: flow, final setting time, radiopacity, dimensional stability, and pH change. The one-way ANOVA and Tukey's post hoc test were used to analyze the data (P = 0.05). The MTA Fillapex sealer had a highest flow and the BC Sealer presented a flow significantly lower than the others (P < 0.05). The BC Sealer and MTA Fillapex samples were not set in humid incubator condition even after one month...
2017: Bioinorganic Chemistry and Applications
https://www.readbyqxmd.com/read/28209481/botulinum-toxin-type-a-reduces-inflammatory-hypernociception-induced-by-arthritis-in-the-temporomadibular-joint-of-rats
#18
Victor Ricardo Manuel Muñoz Lora, Juliana Trindade Clemente-Napimoga, Henrique Ballassini Abdalla, Cristina Gomes Macedo, Giancarlo de la Torre Canales, Celia Marissa Rizzatti Barbosa
OBJECTIVE: This study aimed to investigate the antinociceptive effects of Botulinum toxin type A (BoNT-A) on persistent inflammatory hypernociception induced by arthritis in the temporomandibular joint (TMJ) of rats. MATERIAL AND METHODS: Wistar rats were induced to persistent inflammatory hypernociception in the left TMJ. Then, animals were treated with intra-TMJ injections of BoNT-A, using doses of 3.5, 7 and 14 U/kg. Saline was used as control group. Behavioral tests were applied to evaluated the effect of BoNT-A in the inflammatory hypernociception...
February 13, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28209110/bilateral-inguinal-hernia-with-an-uncommon-content%C3%A2-a-case-report
#19
L Soydan, H Gündoğdu, A Aslan, I Inan, A O Balık
Here we present a sixty-two year old man with bilateral swellings palpated in inguinal areas on physical examination. Ultrasonography and abdominal multi-detector computed tomography revealed a bladder herniation through the right inguinal canal and a sigmoid colon herniation through the left inguinal canal. Radiologic imaging methods are important and can guide clinicians for preemptive or emergent surgery. (Acta gastroenterol. belg., 2016, 79, 495-496).
September 2016: Acta Gastro-enterologica Belgica
https://www.readbyqxmd.com/read/28209004/comparison-of-sealer-penetration-by-using-different-irrigation-techniques-an-in-vitro-study
#20
Prabu Mahin Syed Ismail, Siddiq Ahamed, P B Sabiha, M Chandra Sekhar, Gopikrishna Moosani, S Nagalakshmi Reddy, N Upendranatha Reddy, C H Sumanthi
INTRODUCTION: The main goal of root canal treatment is to eliminate the microorganisms particularly in the apical third area and to prevent re-infection. In order to achieve these goals the instrumentation must be combined with adequate irrigation. AIM: To compare sealer penetration by using different irrigation techniques i.e., apical negative pressure irrigation, Passive Ultrasonic Irrigation (PUI) and combination of apical negative pressure irrigation and PUI...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
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