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https://www.readbyqxmd.com/read/29352770/concentration-dependent-effect-of-bleaching-agents-on-the-immunolabeling-of-interleukin-6-interleukin-17-and-cd5-positive-cells-in-the-dental-pulp
#1
F Benetti, J E Gomes-Filho, L L Ferreira, G Sivieri-Araújo, E Ervolino, A L F Briso, L T A Cintra
AIM: To evaluate lymphocyte-like cell activation (CD5-positive cells) and the expression of interleukin (IL)-6 and IL-17 in the pulp after dental bleaching with two concentrations of hydrogen peroxide (H2 O2 ). METHODOLOGY: The right and left maxillary molars from 40 rats were treated randomly with bleaching gel with 20% H2 O2 (BLUE group, 1 application of 50 min), 35% H2 O2 (MAXX group, 3 applications of 15 min), or placebo gel (Control). After 2 and 30 days, the rats were killed (n=10), and the jaws were processed for histological and immunohistochemistry analysis of the pulp tissue...
January 20, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29352614/who-is-in-and-who-is-out-of-the-mouth-salivary-glands-and-jaws-sections-of-the-4th-edition-of-the-who-classification-of-head-and-neck-tumours
#2
REVIEW
R A Kennedy
This review of changes to the 4th edition of the WHO classification of head and neck tumours focuses on their impact on the surgical care of diseases that affect the salivary glands, jaws, and oral cavity. Updates to the chapter on the salivary glands include the addition of secretory carcinoma and sclerosing polycystic adenosis. The odontogenic cysts are back, and the odontogenic keratocyst is listed among them, as it has now lost its brief and confusing designation as a neoplasm. The newly-defined sclerosing odontogenic carcinoma and primordial odontogenic tumour have been added...
January 15, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29351046/young-adults-experience-of-appearance-altering-orthognathic-surgery-a-longitudinal-interpretative-phenomenologic-analysis
#3
Morna J Liddle, Sarah R Baker, Keith G Smith, Andrew R Thompson
OBJECTIVE: To gain an experiential account of the processes of change associated specifically with orthognathic surgery. DESIGN: A qualitative design was used. Semistructured interviews were carried out with 7 participants approximately 1 week before and 6-8 weeks after surgery. The data were analyzed using interpretative phenomenologic analysis (IPA). SETTING: Participants were recruited from a NHS Dental Hospital. PARTICIPANTS: Patients aged 16 to 25 years scheduled to undergo orthognathic surgery on both the upper and lower jaws were purposively sought to participate...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29351036/crouzon-with-acanthosis-nigricans-and-odontogenic-tumors-a-rare-form-of-syndromic-craniosynostosis
#4
Wen Xu, Donna M McDonald-McGinn, Alexandra J Melchiorre, Elaine H Zackai, Scott P Bartlett, Jesse A Taylor
Crouzon syndrome with acanthosis nigricans (CAN) is caused by a mutation in the fibroblast growth factor receptor ( FGFR) 3 gene that presents clinically as Crouzonoid craniofacial features in association with other anomalies such as acanthosis nigricans and benign odontogenic tumors. Diagnosis through the use of genetic mutational analysis is critical, as it alerts the surgeon to the need for careful screening for jaw tumors so that timely treatment in the form of curettage or segmental resection can be provided...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29349779/skeletogenesis-in-the-persian-sturgeon-acipenser-persicus-and-its-correlation-with-gene-expression-of-vitamin-k-dependent-proteins-during-larval-development
#5
H Eshaghzadeh, A Akbarzadeh, M Yarmohammadi, E Gisbert
The present study describes morphological development of the skeleton in the Persian sturgeon Acipenser persicus and discusses the hypothesis that expression of genes encoding vitamin K-dependent proteins (VKDP) might be correlated with the mineralization of skeletal tissues during early development in sturgeons. Results showed that development of cartilage started just after hatching (mean ± S.D., 10·9 ± 0·7 mm in total length, LT ) in the head and notochord, whereas the first signs of mineralization occurred in the dentary and in the dermopalatine and palatopterygoid elements of the upper jaw, coinciding with the onset of exogenous feeding (20·1 ± 1·5 mm LT )...
January 18, 2018: Journal of Fish Biology
https://www.readbyqxmd.com/read/29349384/acute-hemifacial-ischemia-as-a-late-complication-of-carotid-stenting
#6
Maurizio Domanin, Maurizio Isalberti, Silvia Romagnoli, Antonio Rolli, Simona Sommaruga
Concerns about carotid artery stenting (CAS) center primarily on procedural complications like acute occlusion, stroke, and long-term intrastent restenosis. External carotid artery (ECA) thrombosis is observed during CAS follow-up, but it often remains asymptomatic or, at worst, results in jaw claudication. We report here a case of late occlusion of the ECA after CAS with symptoms of acute homolateral facial ischemia as well as pain, cyanosis, tongue numbness, and skin coldness. The patient was submitted to local thrombolysis and balloon angioplasty with regression of symptoms after recanalization...
June 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29348644/global-priorities-for-conserving-the-evolutionary-history-of-sharks-rays-and-chimaeras
#7
R William Stein, Christopher G Mull, Tyler S Kuhn, Neil C Aschliman, Lindsay N K Davidson, Jeffrey B Joy, Gordon J Smith, Nicholas K Dulvy, Arne O Mooers
In an era of accelerated biodiversity loss and limited conservation resources, systematic prioritization of species and places is essential. In terrestrial vertebrates, evolutionary distinctness has been used to identify species and locations that embody the greatest share of evolutionary history. We estimate evolutionary distinctness for a large marine vertebrate radiation on a dated taxon-complete tree for all 1,192 chondrichthyan fishes (sharks, rays and chimaeras) by augmenting a new 610-species molecular phylogeny using taxonomic constraints...
January 18, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29348112/comparing-short-dental-implants-to-standard-dental-implants-protocol-for-a-systematic-review
#8
Amir Reza Rokn, Abbasali Keshtkar, Abbas Monzavi, Kazem Hashemi, Tahereh Bitaraf
BACKGROUND: Short dental implants have been proposed as a simpler, cheaper, and faster alternative for the rehabilitation of atrophic edentulous areas to avoid the disadvantages of surgical techniques for increasing bone volume. OBJECTIVE: This review will compare short implants (4 to 8 mm) to standard implants (larger than 8 mm) in edentulous jaws, evaluating on the basis of marginal bone loss (MBL), survival rate, complications, and prosthesis failure. METHODS: We will electronically search for randomized controlled trials comparing short dental implants to standard dental implants in the following databases: PubMed, Web of Science, EMBASE, Scopus, the Cochrane Central Register of Controlled Trials, and ClinicalTrials...
January 18, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29343459/differing-structural-properties-of-foods-affect-the-development-of-mandibular-control-and-muscle-coordination-in-infants-and-young-children
#9
Meg Simione, Chrystel Loret, Benjamin Le Révérend, Brian Richburg, Mirna Del Valle, Marc Adler, Mireille Moser, Jordan R Green
The development of chewing is an essential motor skill that is continually refined throughout early childhood. From a motor control perspective, the advancement of textures is dependent upon the fit between a child's oral anatomic and motor system and food properties. The purpose of this exploratory study is to identify age-related changes in chewing motor coordination and control and to determine if these changes are associated with the differing structural properties of solid foods, as well as to explore the role of explanatory variables such as the emergence of teeth and bite force...
January 14, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29342830/methods-to-improve-osseointegration-of-dental-implants-in-low-quality-type-iv-bone-an-overview
#10
REVIEW
Hamdan S Alghamdi
Nowadays, dental implants have become more common treatment for replacing missing teeth and aim to improve chewing efficiency, physical health, and esthetics. The favorable clinical performance of dental implants has been attributed to their firm osseointegration, as introduced by Brånemark in 1965. Although the survival rate of dental implants over a 10-year observation has been reported to be higher than 90% in totally edentulous jaws, the clinical outcome of implant treatment is challenged in compromised (bone) conditions, as are frequently present in elderly people...
January 13, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29342460/role-of-the-frontal-sinus-in-mediating-ocular-vestibular-evoked-myogenic-potentials-by-bone-vibration-stimuli-applied-to-the-forehead
#11
Kuei-You Lin, Te-Huei Yeh, Fu-Shan Jaw, Yi-Ho Young
This study investigated ocular vestibular-evoked myogenic potential (oVEMP) tests via Fpz and Fz taps to assess the role of the frontal sinus in mediating oVEMP elicitation. Forty healthy subjects and 80 patients with Ménière disease (MD) underwent a series of oVEMP tests via a minishaker tapping at the Fpz and Fz sites in a randomized order. Response rates of oVEMP test via various tapping sites were compared. Dimensions of the frontal sinus were measured via CT scan. A significantly negative correlation between the age and height of the frontal sinus was noted, and the cutoff age for discriminating present and absent Fpz oVEMPs in MD patients was 52 years...
January 18, 2018: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29341831/role-of-bone-modifying-agents-in-multiple-myeloma-american-society-of-clinical-oncology-clinical-practice-guideline-update
#12
Kenneth Anderson, Nofisat Ismaila, Patrick J Flynn, Susan Halabi, Sundar Jagannath, Mohammed S Ogaily, Jim Omel, Noopur Raje, G David Roodman, Gary C Yee, Robert A Kyle
Purpose To update guideline recommendations on the role of bone-modifying agents in multiple myeloma. Methods An update panel conducted a targeted systematic literature review by searching PubMed and the Cochrane Library for randomized controlled trials, systematic reviews, meta-analyses, clinical practice guidelines, and observational studies. Results Thirty-five relevant studies were identified, and updated evidence supports the current recommendations. Recommendations For patients with active symptomatic multiple myeloma that requires systemic therapy with or without evidence of lytic destruction of bone or compression fracture of the spine from osteopenia on plain radiograph(s) or other imaging studies, intravenous administration of pamidronate 90 mg over at least 2 hours or zoledronic acid 4 mg over at least 15 minutes every 3 to 4 weeks is recommended...
January 17, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29341126/size-assessment-of-the-gray-reef-shark-carcharhinus-amblyrhynchos-inferred-from-teeth-marks-on-human-wounds
#13
Noémie Jublier, Eric E Clua
An accurate assessment of the biting shark size is paramount for better understanding the agonistic behavior of a species toward humans. The gray reef shark is involved in many accidental bites. Based on the capture of 35 gray sharks, we calculated the algorithm that allows the assessment of the shark size, through the interdental distance (IDD) inferred from teeth marks on human wounds. Our results show a negative allometric relationship and that IDD calculated from imprints perpetrated by the upper jaw are globally similar with those from the lower jaw, in spite of heterodonty...
January 16, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29340482/clear-cell-odontogenic-carcinoma-of-the-mandible-a-treatment-strategy
#14
Sabrina Ferreira, Leonardo Perez Faverani, Gabriel Mulinari Dos Santos, Everton Pontes Martins, Idelmo Rangel Garcia Júnior
Clear cell odontogenic carcinoma (CCOC) is a rare odontogenic tumor of the jaws, histologically characterized by the presence of agglomerates of cells with eosinophilic cytoplasm. The patient, a 62-year-old Caucasian woman, presented an intraosseous lesion in the mandibular symphysis. A clinical examination revealed a discrete volumetric increase with a hard consistency, palpable to extraoral and intraoral examinations. Imaging studies revealed an extensive radiolucent area, without defined limits, extending from the region of the right second premolar to the left canine...
January 15, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29340168/evolution-of-the-vertebrate-neurocranium-problems-of-the-premandibular-domain-and-the%C3%A2-origin-of-the%C3%A2-trabecula
#15
REVIEW
Shigeru Kuratani, Per E Ahlberg
The subdivision of the gnathostome neurocranium into an anterior neural crest-derived moiety and a posterior mesodermal moiety has attracted the interest of researchers for nearly two centuries. We present a synthetic scenario for the evolution of this structure, uniting developmental data from living cyclostomes and gnathostomes with morphological data from fossil stem gnathostomes in a common phylogenetic framework. Ancestrally, vertebrates had an anteroposteriorly short forebrain, and the neurocranium was essentially mesodermal; skeletal structures derived from premandibular ectomesenchyme were mostly anterior to the brain and formed part of the visceral arch skeleton...
2018: Zoological Letters
https://www.readbyqxmd.com/read/29340024/chitosan-composite-scaffold-combined-with-bone-marrow-derived-mesenchymal-stem-cells-for-bone-regeneration-in-vitro-and-in-vivo-evaluation
#16
Shengqi Zang, Lei Zhu, Kefu Luo, Rui Mu, Feng Chen, Xiaocui Wei, Xiaodong Yan, Biyao Han, Xiaolei Shi, Qintao Wang, Lei Jin
The study aimed to develop a chitosan (CS)-based scaffold for repairing calvarial bone defects. We fabricated composite scaffolds made of CS and bovine-derived xenograft (BDX), characterized their physicochemical properties including pore size and porosity, absorption, degradation, and compressive strength, compared their efficacy to support in vitro proliferation and differentiation of human jaw bone marrow-derived mesenchymal stem cells (hJBMMSCs), and evaluated their bone regeneration capacity in critical-size rat calvarial defects...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339183/evolution-of-the-growth-hormone-prolactin-prolactin-2-and-somatolactin-family
#17
Daniel Ocampo Daza, Dan Larhammar
Growth hormone (GH), prolactin (PRL), prolactin 2 (PRL2) and somatolactin (SL) belong to the same hormone family and have a wide repertoire of effects including development, osmoregulation, metabolism and stimulation of growth. Both the hormone and the receptor family have been proposed to have expanded by gene duplications in early vertebrate evolution. A key question is how hormone-receptor preferences have arisen among the duplicates. The first step to address this is to determine the time window for these duplications...
January 12, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29339027/a-comparative-study-of-osteopontin-and-mmp-2-protein-expression-in-peripheral-and-central-giant-cell-granuloma-of-the-jaws
#18
Nooshin Mohtasham, Nasrollah Saghravanian, Bahareh Fatemi, Mehdi Vahedi, Monavar Afzal-Aghaee, Hamideh Kadeh
INTRODUCTION: Oral peripheral and central giant cell granulomas are lesions with little-known etiology and pathogenesis. OBJECTIVE: The aim of this study was to compare matrix metalloproteinases-2 and osteopontin protein expression in the multinucleated giant cells and mononuclear cells of the peripheral and central giant cell granuloma lesions. METHODS: In this retrospective study, the presence of matrix metalloproteinases-2 and osteopontin in 37 cases of central giant cell granuloma and 37 cases of peripheral giant cell granuloma paraffin blocks were assessed by streptavidin-biotin immunohistochemistry...
December 27, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29334509/comparison-of-stress-and-strain-distribution-around-splinted-and-nonsplinted-6-mm-short-implants-in-posterior-mandible-a-finite-element-analysis-study
#19
Mansour Meimandi, Mohammad Reza Talebi Ardakani, Reza Amid, Amir Mahmoudi Motlagh, Shahrzad Beheshti
PURPOSE: This study was designed to compare the biomechanical performance of splinted and nonsplinted short implants, in the posterior mandible, using finite element analysis. MATERIALS AND METHODS: Three-dimensional models of short implants with 2 different diameters (4 × 6 mm or 5 × 6 mm) were scanned, and CATIA (R21) was used to simulate the model of an edentulous lower jaw. Experimental groups were designed as follows: (1) D4L6-splinted (three 4 × 6-mm splinted implants), (2) D4L6-nonsplinted, (3) D5L6-splinted, and (4) D5L6-nonsplinted...
January 12, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29333784/-ancient-human-jaw-osteomyelitis-in-chinese-yangshao-period-a-case-report
#20
Zhou Yawei, Gu Wanfa, Han Guohe
This article reported jaw osteomyelitis in ancient human bone specimens, helping us to understand the emergence of ancient human jaw osteomyelitis and other oral health conditions.
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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