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https://www.readbyqxmd.com/read/27895878/evaluation-of-visibility-of-foreign-bodies-in-the-maxillofacial-region-comparison-of-computed-tomography-cone-beam-computed-tomography-ultrasound-and-magnetic-resonance-imaging
#1
Solmaz Valizadeh, Hamidreza Pouraliakbar, Leila Kiani, Yaser Safi, Leila Alibakhshi
BACKGROUND: Detection of foreign bodies (FBs) is challenging. Selection of a fast and affordable imaging modality to locate the FB with minimal patient radiation dose is imperative. OBJECTIVES: This study sought to compare four commonly used imaging modalities namely cone beam computed tomography (CBCT), magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound (US) for detection of FBs in the head and neck region. MATERIALS AND METHODS: In this in vitro study, iron, glass, stone, wood, asphalt, and tooth samples measuring 0...
October 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27895350/age-estimation-of-a-sample-of-pakistani-population-using-coronal-pulp-cavity-index-in-molars-and-premolars-on-orthopantomogram
#2
Sheikh Bilal Badar, Robia Ghafoor, Farhan Raza Khan, Muhammad Hasan Hameed
The aim of the present study was to assess the validity of tooth-coronal index (TCI) in the age estimation. This retrospective charts review was conducted at the Aga Khan University Hospital, Karachi from January 2016 to March 2016, and comprised 315 teeth of 80 individuals. The teeth were analysed on Orthopantomogram. TCI was calculated for unrestored mandibular premolars and molars. Pearson\\\'s correlation was applied to assess correlation between chronological age and TCI. Besides, 30(37.5%) subjects were male and 50(62...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27892838/effect-of-bioactive-primers-on-bacterial-induced-secondary-caries-at-the-tooth-resin-interface
#3
G E Kim, A A Leme-Kraus, R Phansalkar, G Viana, C Wu, S-N Chen, G F Pauli, Akb Bedran-Russo
Secondary caries at the tooth-resin interface is the primary reason for replacement of resin composite restorations. The tooth-resin interface is formed by the interlocking of resin material with hydroxyapatite crystals in enamel and collagen mesh structure in dentin. Efforts to strengthen the tooth-resin interface have identified chemical agents with dentin collagen cross-linking potential and antimicrobial activities. The purpose of the present study was to assess protective effects of bioactive primer against secondary caries development around enamel and dentin margins of class V restorations, using an in vitro bacterial caries model...
November 28, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27891487/a-rare-case-of-pyogenic-granuloma-with-a-natal-tooth
#4
Nidhi Agarwal, Dipanshu Kumar, Alaka Vaish, Ashish Anand
Natal teeth are teeth present in the oral cavity at the time of birth. It is extremely rare to find natal teeth in association with pathological conditions of the oral cavity. Pyogenic granuloma is a type of inflammatory hyperplasia that appears as an over exuberant connective tissue response to a stimulus or injury, in the present case the injurious agent is the natal tooth. The parents of the eight day old male infant brought the child with a natal tooth associated with a soft tissue lesion growing from the gum pad...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890355/the-effects-of-cavity-margin-angles-and-bolus-stiffness-on-the-mechanical-behavior-of-indirect-resin-composite-class-ii-restorations
#5
Pietro Ausiello, Stefano Ciaramella, Franklin Garcia-Godoy, Antonio Gloria, Antonio Lanzotti, Saverio Maietta, Massimo Martorelli
OBJECTIVE: To study the influence of the different class II mesio-occlusal-distal (MOD) cavity shape on the stress and strain distributions in adhesive indirect restorations, using numerical finite element analysis (FEA). To investigate the relationship between restored teeth failure and stiffness of food, three values of Young's modulus were used for the food. METHODS: A 3D model of a sound lower molar and three class II MOD cavities with different shape were created...
November 24, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27889605/posterior-composites-update-on-cavities-and-filling-techniques
#6
J Sabbagh, R J McConnell, M Clancy McConnell
OBJECTIVES: The aim of this paper is to examine cavity design for posterior resin composite restorations and to discuss various resin composite filling techniques. DATA: Literature with regard to cavity preparation for amalgam and resin composite restorations has been reviewed. An overview of available bulkfill resin composite systems is provided and a categorization of these systems according to their clinical application and their intended use is outlined. SOURCES: A literature search was carried out by the authors in Medline...
November 23, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27864174/multilocus-sequence-analysis-of-phylogroup-1-and-2-oral-treponeme-strains
#7
Yong-Biao Huo, Yuki Chan, Donnabella C Lacap-Bugler, Sisu Mo, Patrick C Y Woo, W Keung Leung, Rory M Watt
: More than 75 'species-level' phylotypes of spirochete bacteria belonging to the genus Treponema reside within the human oral cavity. The majority of these oral treponeme phylotypes correspond to as-yet uncultivated taxa, or strains of uncertain standing in taxonomy. Here, we analyze phylogenetic and taxonomic relationships between oral treponeme strains using a multilocus sequence analysis (MLSA) scheme based on the highly-conserved 16S rRNA, pyrH, recA and flaA genes. We utilize this MLSA scheme to analyze genetic data from a curated collection of oral treponeme strains (n=71) of diverse geographical origins...
November 18, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27863155/nanoparticle-based-targeting-and-detection-of-microcavities
#8
Nathan A Jones, Sywe-Ren Chang, William J Troske, Brian H Clarkson, Joerg Lahann
Although dental caries is the most prevalent oral disease worldwide, currently, many dentists continue to use the traditional mirror and probe (dental explorer) method of caries diagnosis. This method of caries detection has the drawback that it is often difficult to distinguish between active and inactive carious lesions. In this work, novel bio-based nanoparticles are developed to specifically detect active caries in vitro. The nanoparticles are made from a cationic fluorescein-labeled food-grade starch in order to fluoresce when illuminated by a standard dental curing light, and to degrade in the oral cavity into nontoxic compounds after detecting the active carious lesion...
November 15, 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27861470/-mandibular-osteoradionecrosis-orn-as-a-side-effect-of-head-and-neck-cancer-treatment-factors-that-induce-it
#9
José Francisco Gallegos-Hernández, Alejandro Reyes-Vivanco, Héctor Arias-Ceballos, Gerardo Gabriel Minauro-Muñoz, Alma Lilia Ortiz-Maldonado, Daniel Israel García-Ruiz, Martín Hernández-Sanjuán
INTRODUCTION: Osteoradionecrosis of the mandible is a relatively common complication in patients with head and neck cancer undergoing radiotherapy or concomitant chemoradiotherapy, characterized by exposure of the mandibular bone either in the mouth or in the facial skin, with no improvement with conservative treatment for six months. The risk factors are radiotherapy in head and neck region, lack of dental prophylaxis before treatment and dental extraction. MATERIAL AND METHODS: Retrospective observational study analyzing incidence and etiologic factors of osteoradionecrosis in 250 patients undergoing radiotherapy or combined treatment of cervicofacial area between 2002 and 2010...
November 2016: Gaceta Médica de México
https://www.readbyqxmd.com/read/27834413/can-degradation-of-adhesive-interfaces-due-to-water-storage-affect-stress-distributions-a-finite-element-stress-analysis-study
#10
Sema Belli, Oğuz Eraslan, Gürcan Eskitaşcıoğlu
PURPOSE: The aim of this finite-element stress analysis (FEA) was to determine the effect of degradation due to water storage on stress distributions in root-filled premolar models restored with composite using either a self-etch (SE) or an etch-and-rinse (E&R) adhesive. MATERIALS AND METHODS: Four premolar FEA models including root filling, MOD cavity, and composite restorations were created. The cavities were assumed to be treated by SE or E&R adhesives and stored in water for 18 months...
November 10, 2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27834119/correlation-of-periodontal-disease-with-inflammatory-arthritis-in-the-time-before-modern-medical-intervention
#11
Bruce Rothschild
BACKGROUND: Controversy exists as to possible correlation of periodontal disease with rheumatoid arthritis and ankylosing spondylitis. Confounding factors may relate to stringency of inflammatory disease diagnosis and to effect on periodontal disease of therapeutic intervention for rheumatoid arthritis. These were investigated. METHODS: Forty-five individuals with documented rheumatoid arthritis, spondyloarthropathy and calcium pyrophosphate deposition disease were examined from the Hamann-Todd collection of human skeletons compiled between 1912 and 1938, in addition to fifteen individuals contemporarily incorporated in the collection were examined for tooth loss, cavity occurrence, average and maximum lingual and buccal depth of the space between tooth and bone, periosteal reaction, serpentine bone resorption, abscess formation and root penetration of bone surface and analyzed by analysis of variance (ANOVA)...
November 11, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27802124/margin-integrity-and-secondary-caries-of-lined-or-non-lined-composite-and-glass-hybrid-restorations-after-selective-excavation-in-vitro
#12
F Schwendicke, Jlm Kniess, S Paris, U Blunck
OBJECTIVES: For deep carious lesions, selective carious tissue removal (leaving soft dentin close to the pulp) is suggested. Afterward, different restoration materials, such as resin composites or glass hybrids (GHs), can be placed. Many dentists also apply setting or non-setting calcium hydroxide liners before restoration. We compared margin integrity and susceptibility for secondary caries in differently restored premolars in vitro. METHODS: In 48 extracted human premolars, artificial residual lesions were induced on pulpo-axial walls of standardized cavities...
November 1, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27802122/shear-bond-strength-and-tooth-composite-interaction-with-self-adhering-flowable-composites
#13
C Brueckner, H Schneider, R Haak
PURPOSE: To evaluate the tooth-composite interaction (A) and shear bond strength (SBS; B) of self-adhering flowables. METHODS AND MATERIALS: (A) Thirty-two human molars with one Class V cavity were restored with Vertise Flow (VF), Fusio Liquid Dentin (FLD), an experimental self-adhering flowable (EF), or Adper Prompt-L-Pop/Filtek Supreme XT Flowable (PLP). Teeth were prepared according to laboratory standard and stored in water (24 hours, 37°C). Microleakage (ML; percentage interface length at enamel [E]/dentin [D]) and tooth-composite interaction were investigated...
November 1, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27800485/clinical-application-of-cone-beam-computed-tomography-of-the-rabbit-head-part-1-normal-dentition
#14
G G Riggs, Boaz Arzi, Derek D Cissell, David C Hatcher, Philip H Kass, Amy Zhen, Frank J M Verstraete
Domestic rabbits (Oryctolagus cuniculus) are increasingly popular as household pets; therefore, veterinarians need to be familiar with the most common diseases afflicting rabbits including dental diseases. Diagnostic approaches for dental disease include gross oral examination, endoscopic oral examination, skull radiography, and computed tomography (CT). CT overcomes many limitations of standard radiography by permitting cross-sectional images of the rabbit head in multiple planes without superimposition of anatomic structures...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/27797725/morphology-and-distribution-of-taste-papillae-and-oral-denticles-in-the-developing-oropharyngeal-cavity-of-the-bamboo-shark-chiloscyllium-punctatum
#15
Carla J L Atkinson, Kyle J Martin, Gareth J Fraser, Shaun P Collin
Gustation in sharks is not well understood, especially within species that ingest food items using suction. This study examines the morphological and immunohistochemical characterisation of taste papillae and oral denticles in the oropharynx of the brown-banded bamboo shark Chiloscyllium punctatum and compares their distribution during development. Taste papillae of the brown-banded bamboo shark Chiloscyllium punctatum are located throughout the oropharyngeal region and are most concentrated on the oral valves (2,125-3,483 per cm(2) in embryos; 89-111 per cm(2) in mature adults) close to the tooth territories...
October 26, 2016: Biology Open
https://www.readbyqxmd.com/read/27794161/effects-and-effectiveness-of-cavity-disinfectants-in-operative-dentistry-a-literature-review
#16
Mohammed S Bin-Shuwaish
The degree of success in the elimination of bacteria during cavity preparation and prior to the insertion of a restoration may increase the longevity of the restoration and therefore the success of the restorative procedure. The complete eradication of bacteria in a caries-affected tooth, during cavity preparation, is considered a difficult clinical task. In addition to weakening the tooth structure, attempts to excavate extensive carious tissue completely, by only mechanical procedures, may affect the vitality of the pulp...
October 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27794150/periodontal-and-microbiological-profile-of-intensive-care-unit-inpatients
#17
Alessandra N Porto, Alvaro H Borges, Grace Rocatto, Fernanda Z Matos, Alexandre M Borba, F L Miranda Pedro, Suellen L Lima, Mateus R Tonetto, Matheus C Bandéca, A M Fabio Aranha
INTRODUCTION: The bidirectional relationship between the periodontal diseases and systemic diseases was attributed to the focal infection concept. The aims of this study were to assess the periodontal and microbiological profile of intensive care unit (ICU) inpatients submitted to orotracheal intubation, and classify them regarding gender, age group, ethnic, hospitalization reason and period, nosocomial infection occurrence, and death. MATERIALS AND METHODS: Inpatients were assessed, distributed into toothed and toothless groups...
October 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27790267/apical-sealing-ability-of-mineral-trioxide-aggregate-intermediate-restorative-material-and-calcium-enriched-mixture-cement-a-bacterial-leakage-study
#18
Shahriar Shahriari, Farhad Faramarzi, Mohammad-Yousef Alikhani, Maryam Farhadian, Seyedeh Sareh Hendi
INTRODUCTION: This in vitro study compared the apical sealing ability of three common root end filling materials namely mineral trioxide aggregate (MTA), intermediate restorative material (IRM) and calcium-enriched mixture (CEM) cement using a bacterial leakage model. METHODS AND MATERIALS: The study was conducted on 83 single-rooted human teeth. Tooth crowns were cut and root canals were prepared using the step-back technique. Apical 3 mm of the roots were cut and a three-mm-deep cavity was prepared using an ultrasonic instrument...
2016: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/27780315/dental-cavity-liners-for-class-i-and-class-ii-resin-based-composite-restorations
#19
REVIEW
Andrew B Schenkel, Ivy Peltz, Analia Veitz-Keenan
BACKGROUND: Resin-based composite (RBC) is currently accepted as a viable material for the restoration of caries for posterior permanent teeth requiring surgical treatment. Despite the fact that the thermal conductivity of the RBC restorative material closely approximates that of natural tooth structure, postoperative hypersensitivity is sometimes still an issue. Dental cavity liners have historically been used to protect the pulp from the toxic effects of some dental restorative materials and to prevent the pain of thermal conductivity by placing an insulating layer between restorative material and the remaining tooth structure...
October 25, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27778394/use-of-new-targeted-cancer-therapies-in-children-effects-on-dental-development-and-risk-of-jaw-osteonecrosis-a-review
#20
Magali Hernandez, Bérengère Phulpin, Ludovic Mansuy, Dominique Droz
New targeted cancer therapies such as bisphosphonates, denosumab and bevacizumab are routinely used in adult for the past decades. Their introduction into pediatric medicine is more recent that means there is a paucity of data on long-term effects on dental development and on the risk of osteonecrosis of jaw. This paper aims to outline adverse effects of new targeted cancer therapies on oral cavity including dental abnormalities observed in pediatric population treated with these molecules and the risk of osteonecrosis of the jaw (ONJ)...
October 25, 2016: Journal of Oral Pathology & Medicine
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