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https://www.readbyqxmd.com/read/29210080/the-permian-reptile-opisthodontosaurus-carrolli-a%C3%A2-model-for-acrodont-tooth-replacement-and-dental-ontogeny
#1
Yara Haridy, Aaron R H LeBlanc, Robert R Reisz
Continuous tooth replacement is common for tetrapods, but some groups of acrodont lepidosaurs have lost the ability to replace their dentition (monophyodonty). Acrodonty, where the tooth attaches to the apex of the jawbone, is an unusual form of tooth attachment that has been associated with the highly autapomorphic condition of monophyodonty. Beyond Lepidosauria, very little is known about the relationship between acrodonty and monophyodonty in other amniotes. We test for this association with a detailed study of the dentition of Opisthodontosaurus, an unusual Early Permian captorhinid eureptile with acrodont dentition...
December 6, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29195021/marginal-jawbone-loss-is-associated-with-onset-of-rheumatoid-arthritis-and-is-related-to-plasma-level-of-receptor-activator-of-nuclear-factor-kappa-b-ligand-rankl
#2
Elin Kindstedt, Linda Johansson, Py Palmqvist, Cecilia Koskinen Holm, Heidi Kokkonen, Ingegerd Johansson, Solbritt Rantapää Dahlqvist, Pernilla Lundberg
OBJECTIVES: We investigated whether periodontitis, displayed as marginal jawbone loss, preceded onset of symptoms of RA. Furthermore, we analysed plasma levels of receptor activator of nuclear factor kappa-B (RANKL), a cytokine crucial for bone resorption and of anti-citrullinated peptide antibodies (ACPA) in pre-symptomatic individuals compared with controls. METHODS: Marginal jawbone levels were measured on dental radiographs from the premolar/molar regions of the jaws of 176 subjects of whom 93 had developed RA...
December 1, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29184447/aseptic-avascular-osteonecrosis-local-silent-inflammation-in-the-jawbone-and-rantes-ccl5-overexpression
#3
Johann Lechner, Sabine Schuett, Volker von Baehr
Of the definitions listed in the International Statistical Classification of Diseases and Related Health Problems, tenth revision (ICD-10), two disease descriptions can be found together: "idiopathic aseptic bone necrosis" and "avascular bone necrosis." The relevant literature on both the conditions abbreviates both as "aseptic ischemic osteonecrosis in the jawbone" (AIOJ). To shed light on the clinical details of this condition, osteolytic jawbone samples of 24 patients with different systemic immunological diseases were examined using four steps: presurgical dental X-ray, postsurgical histology, polymerase chain reaction DNA analysis (PCR DNA) of bacteria, and RANTES/CCL5 (R/C) expression...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/29175271/gnathodiaphyseal-dysplasia-severe-atypical-presentation-with-novel-heterozygous-mutation-of-the-anoctamin-gene-ano5
#4
Ghada A Otaify, Michael P Whyte, Gary S Gottesman, William H McAlister, J Eric Gordon, Abby Hollander, Marisa V Andrews, Samir K El-Mofty, Wei-Shen Chen, Deborah V Novack, Marina Stolina, Albert Woo, Panagiotis Katsonis, Olivier Lichtarge, Fan Zhang, Marwan Shinawi
Gnathodiaphyseal dysplasia (GDD; OMIM #166260) is an ultra-rare autosomal dominant disorder caused by heterozygous mutation in the anoctamin 5 (ANO5) gene and features fibro-osseous lesions of the jawbones, bone fragility with recurrent fractures, and bowing/sclerosis of tubular bones. The physiologic role of ANO5 is unknown. We report a 5-year-old boy with a seemingly atypical and especially severe presentation of GDD and unique ANO5 mutation. Severe osteopenia was associated with prenatal femoral fractures, recurrent postnatal fractures, and progressive bilateral enlargement of his maxilla and mandible beginning at ~2months-of-age that interfered with feeding and speech and required four debulking operations...
November 21, 2017: Bone
https://www.readbyqxmd.com/read/29167684/demographic-profile-of-non-odontogenic-jaw-lesions-in-an-iranian-population-a-30-year-archive-review
#5
Fereshteh Baghai Naini, Pouyan Aminishakib, Maedeh Ghorbanpour, Mohammad Mehdi Vakili, Mohammad Javad Kharazifard
Objectives: The frequency of non-odontogenic lesions of the jawbones is lower than that of odontogenic lesions; however, study of the epidemiologic data of these lesions is required for health care programs. This study aimed to assess the relative frequency and demographic profile of non-odontogenic jaw lesions in an Iranian population over a 30-year period. Materials and Methods: This archive review was performed using demographic and biopsy information of all patients with non-odontogenic lesions of the jawbones submitted to the Oral Pathology Department of Dental School of Tehran University of Medical Sciences from 1984 to 2014...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29165029/brief-report-active-ingredients-for-adherence-to-a-tracker-based-physical-activity-intervention-in-older-adults
#6
Maria C Swartz, Zakkoyya H Lewis, Michael D Swartz, Eloisa Martinez, Elizabeth J Lyons
OBJECTIVES: To identify factors associated with weekly adherence to a 12-week tracker-based activity intervention in older adults. METHOD: Using generalized linear mixed models in a secondary analysis ( N = 35), we examined factors associated with weekly adherence (defined as wore the Jawbone Up24 tracker for ≥5 days and completed weekly calls). Factors examined included individual characteristics, gave and received virtual support, achieved step goals, barrier and task self-efficacy, and self-comment...
November 1, 2017: Journal of Applied Gerontology: the Official Journal of the Southern Gerontological Society
https://www.readbyqxmd.com/read/29075415/updated-secondary-implant-stability-data-of-two-dental-implant-systems-a-retrospective-cohort-study
#7
Nicolas Grognard, Gino Verleye, Dimitrios Mavreas, Bart Vande-Vannet
BACKGROUND: At present, updated secondary implant stability data generated by actual versions of resonance frequency analysis (RFA) and mobility measurement (MM) electronic devices of 2 different implant systems with actual manufactured surfaces seem to lack and/or are incomplete. MATERIAL AND METHODS: Secondary implant stability data based on both RFA and MM measurements were collected and analyzed from 44 formerly treated patients (24 f, 20 m) that received either Ankylos Cellplus (Ø3...
September 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29063702/antiresorptive-treatment-associated-onj
#8
REVIEW
Evangelos Eleutherakis-Papaiakovou, Aristotelis Bamias
Osteonecrosis of the jaw (ONJ) is a severe complication of therapy with antiresorptive agents (e.g. bisphosphonates and denosumab), which are used to manage bone metastases from cancer, to reduce the incidence of skeletal-related events. Available data indicate that 0-27, 5% of patients exposed to antiresorptive agents may develop ONJ, depending on the number of infusions and the duration of therapy. Besides antiresorptive therapy, a number of risk factors for osteonecrosis have been identified. Oral surgical procedures, tooth extractions and infection to the jawbones are considered the main risk factors for developing ONJ, when receiving antiresorptive therapy...
November 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/29061684/teaching-neuroimages-new-onset-focal-epilepsy-the-curious-case-of-the-camel-and-the-jawbone
#9
James D Triplett, Nicholas Lawn, Rob Edis
No abstract text is available yet for this article.
October 24, 2017: Neurology
https://www.readbyqxmd.com/read/29042168/autonomous-bone-reposition-around-anatomical-landmark-for-robot-assisted-orthognathic-surgery
#10
Sang-Yoon Woo, Sang-Jeong Lee, Ji-Yong Yoo, Jung-Joon Han, Soon-Jung Hwang, Kyung-Hoe Huh, Sam-Sun Lee, Min-Suk Heo, Soon-Chul Choi, Won-Jin Yi
The purpose of this study was to develop a new method for enabling a robot to assist a surgeon in repositioning a bone segment to accurately transfer a preoperative virtual plan into the intraoperative phase in orthognathic surgery. We developed a robot system consisting of an arm with six degrees of freedom, a robot motion-controller, and a PC. An end-effector at the end of the robot arm transferred the movements of the robot arm to the patient's jawbone. The registration between the robot and CT image spaces was performed completely preoperatively, and the intraoperative registration could be finished using only position changes of the tracking tools at the robot end-effector and the patient's splint...
September 19, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28968241/pilot-validation-of-ambulatory-activity-monitors-for-sleep-measurement-in-huntington-s-disease-gene-carriers
#11
Svetlana Maskevich, Ria Jumabhoy, Pierre D M Dao, Julie C Stout, Sean P A Drummond
Sleep disturbance occurs early in Huntington's disease (HD). Consumer- and research-grade activity monitors may enable routine assessment of sleep disturbances in HD. We compared Actiwatch Spectrum Pro, Jawbone UP2 and Fitbit One to the gold standard, polysomnography, in four late presymptomatic and three early HD participants. Compared to polysomnography, all ambulatory monitors overestimated total sleep time by >60 minutes and sleep efficiency by ∼15%. Thus, for assessment of specific sleep parameters in HD, none of the activity monitors are sufficiently accurate to replace polysomnography, although they may be sufficient for estimating overall sleep-wake patterns...
2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28916324/in%C3%A2-vitro-investigation-of-the-antimicrobial-effect-of-three-bisphosphonates-against-different-bacterial-strains
#12
Michael A Ermer, Simon C Kottmann, Jörg-Elard Otten, Annette Wittmer, Philipp Poxleitner, Klaus Pelz
PURPOSE: Since the first descriptions of medication-related osteonecrosis of the jaw (MRONJ) in 2003, the pathogenesis has remained unanswered. Recent histomorphometric studies have found several microorganisms, including Actinomyces, Bacillus, Fusobacterium, Staphylococcus, Streptococcus, Selenomonas, Treponema, and Candida albicans in necrotic bone. Polymerase chain reaction studies have recently confirmed the occurrence of 48 genera. Only a few studies have examined the antimicrobial effect of bisphosphonates (BPs)...
August 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28873023/influence-of-bisphosphonates-on-implant-failure-rates-and-characteristics-of-postmenopausal-woman-mandibular-jawbone
#13
Naoko Yajima, Motohiro Munakata, Kei Fuchigami, Minoru Sanda, Shohei Kasugai
Rehabilitation of oral function using dental implants is clinically effective and highly predictable. Bone quantity and quality at the implant site both affect the success of the procedure. However, the effect of bisphosphonate (BP) use on mandibular bone quality has not been well documented. The purpose of this retrospective cohort study was to evaluate the bone mineral density (BMD) and cortical thickness of the mandible, as well as the influence of BP use on early implant failure. Twenty-five female patients (≥ 60 years of age) were selected from among 93 candidates with a partially edentulous posterior mandible...
September 5, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28872729/a-retrospective-cohort-study-of-the-cumulative-survival-rate-of-obturator-prostheses-for-marsupialization
#14
Mamoru Murakami, Yasuhiro Nishi, Misaki Nishio, Yoko Minemoto, Takaharu Shimizu, Masahiro Nishimura
PURPOSE: After marsupialization of benign tumors and jawbone cysts, insertion of an obturator prosthesis maintains the surgical opening and improves hygiene. To date, there have been no reports clarifying the relationship between the obturator design and treatment outcomes. The purpose of this study was to examine the survival rate of three types of obturator, and to investigate the factors that expedite the removal of the obturator. MATERIALS AND METHODS: The subject group comprised 100 patients who had an obturator inserted after marsupialization at Kagoshima University Hospital between May 31, 2012 and March 31, 2015; 73 patients with lesions in the mandible were eligible...
September 5, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28855535/evaluation-of-the-condyle-remodeling-after-lateral-arthroplasty-in-growing-children-with-temporomandibular-joint-ankylosis
#15
XiuJuan Yang, Chuan Lu, MinJun Dong, DongMei He, Chi Yang, YiHui Hu
Temporomandibular joint (TMJ) ankylosis in growing patients can cause both mouth opening limitation and jaw bone deformity. Lateral arthroplasty (LAP) can restore the medially displaced condyle and thus keep its growth potential. But can the condyle grow as normal is unknown. This study was to evaluate the long-term result after LAP in growing children. Patients from 2010 to 2014 were evaluated. Their CT data within 1 week after operation and during at least 1-year follow-ups were measured by ProPlan CMF 1...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807889/activity-trackers-implement-different-behavior-change-techniques-for-activity-sleep-and-sedentary-behaviors
#16
Mitch Duncan, Beatrice Murawski, Camille E Short, Amanda L Rebar, Stephanie Schoeppe, Stephanie Alley, Corneel Vandelanotte, Morwenna Kirwan
BACKGROUND: Several studies have examined how the implementation of behavior change techniques (BCTs) varies between different activity trackers. However, activity trackers frequently allow tracking of activity, sleep, and sedentary behaviors; yet, it is unknown how the implementation of BCTs differs between these behaviors. OBJECTIVE: The aim of this study was to assess the number and type of BCTs that are implemented by wearable activity trackers (self-monitoring systems) in relation to activity, sleep, and sedentary behaviors and to determine whether the number and type of BCTs differ between behaviors...
August 14, 2017: Interactive Journal of Medical Research
https://www.readbyqxmd.com/read/28807041/the-feasibility-and-re-aim-evaluation-of-the-tame-health-pilot-study
#17
Zakkoyya H Lewis, Kenneth J Ottenbacher, Steve R Fisher, Kristofer Jennings, Arleen F Brown, Maria C Swartz, Eloisa Martinez, Elizabeth J Lyons
BACKGROUND: Conducting 5 A's counseling in clinic and utilizing technology-based resources are recommended to promote physical activity but little is known about how to implement such an intervention. This investigation aimed to determine the feasibility and acceptability, using the RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance) framework, of a pragmatic, primary care-based intervention that incorporated 5 A's counseling and self-control through an activity monitor...
August 14, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28795513/the-economic-implications-of-sylvatic-rabies-eradication-in-italy
#18
S Sartore, P Mulatti, S Trestini, M Lorenzetto, L Gagliazzo, S Marangon, L Bonfanti
After more than 10 years of absence, sylvatic rabies re-appeared in Italy in 2008. To prevent disease spread, three oral rabies vaccination (ORV) campaigns targeting red foxes were performed through manual distribution of vaccine baits between January and September 2009. As these campaigns proved unsuccessful, at the end of December 2009, baits started being distributed using helicopters, allowing uniform coverage of larger areas in a shorter time period. From winter 2009 to autumn 2016, a total of 15 ORV campaigns (four emergency, four regular and seven preventive ORV) were implemented through aerial distribution of baits...
August 9, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28746370/neogene-proto-caribbean-porcupinefishes-diodontidae
#19
Orangel Aguilera, Guilherme Oliveira Andrade Silva, Ricardo Tadeu Lopes, Alessandra Silveira Machado, Thaís Maria Dos Santos, Gabriela Marques, Thayse Bertucci, Thayanne Aguiar, Jorge Carrillo-Briceño, Felix Rodriguez, Carlos Jaramillo
Fossil Diodontidae in Tropical America consist mostly of isolated and fused beak-like jawbones, and tooth plate batteries. These durophagous fishes are powerful shell-crushing predators on shallow water invertebrate faunas from Neogene tropical carbonate bottom, rocky reefs and surrounding flats. We use an ontogenetic series of high-resolution micro CT of fossil and extant species to recognize external and internal morphologic characters of jaws and tooth plate batteries. We compare similar sizes of jaws and/or tooth-plates from both extant and extinct species...
2017: PloS One
https://www.readbyqxmd.com/read/28726648/-cone-beam-computed-tomography-in-diagnostics-of-odontogenic-maxillary-sinusitis-case-reports
#20
E Demidova, G Khurdzidze
Diagnostic studies performed by cone beam computed tomography Morita 3D made possible to obtain high resolution images of hard tissues of upper jawbone and maxillary sinus, to detect bony tissue defects, such as odontogenic cysts, cystogranulomas and granulomas. High-resolution and three dimensional tomographic image reconstructions allowed for optimal and prompt determination of the scope of surgical treatment and planning of effective conservative treatment regimen. Interactive diagnostics helped to estimate cosmetic and functional results of surgical treatment, to prevent the occurrence of surgical complications, and to evaluate the efficacy of conservative treatment...
June 2017: Georgian Medical News
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