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https://www.readbyqxmd.com/read/29444105/accuracy-and-precision-of-consumer-level-activity-monitors-for-stroke-detection-during-wheelchair-propulsion-and-arm-ergometry
#1
Jochen Kressler, Joshua Koeplin-Day, Benedikt Muendle, Brice Rosby, Elizabeth Santo, Antoinette Domingo
The purpose of this study was to evaluate whether consumer-level activity trackers can estimate wheelchair strokes and arm ergometer revolutions. Thirty able-bodied participants wore three consumer-level activity trackers (Garmin VivoFit, FitBit Flex, and Jawbone UP24) on the wrist. Participants propelled a wheelchair at fixed frequencies (30, 45 and 60 strokes per minute (spm)) three minutes each and at pre-determined varied frequencies, (30-80 spm) for two minutes. Participants also freely wheeled through an obstacle course...
2018: PloS One
https://www.readbyqxmd.com/read/29434012/reducing-sedentary-time-for-obese-older-adults-protocol-for-a-randomized-controlled-trial
#2
Dori E Rosenberg, Amy K Lee, Melissa Anderson, Anne Renz, Theresa E Matson, Jacqueline Kerr, David Arterburn, Jennifer B McClure
BACKGROUND: Older adults have high rates of obesity and are prone to chronic health conditions. These conditions are in part due to high rates of sedentary time (ST). As such, reducing ST could be an innovative strategy for improving health outcomes among obese older adults. To test this theory, we developed a novel, technology-enhanced intervention to reduce sitting time (I-STAND) and pilot tested it to assess the feasibility, acceptability, and preliminary effects of the intervention on ST and biometric outcomes...
February 12, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29409125/editorial-commentary-on-the-paper-by-kindstedt-et-al-marginal-jawbone-loss-is-associated-with-onset-of-ra-and-is-related-to-plasma-level-of-rankl
#3
EDITORIAL
Paola de Pablo
Periodontitis is arguably the most prevalent chronic inflammatory disease of humans, affecting more than 45% of US adults aged 30 years and older (1, 2). The defining feature of periodontitis is chronic inflammation of the tooth supporting tissues leading to the progressive irreversible destruction of periodontal ligament and alveolar bone, resulting in the formation of periodontal pockets and eventually tooth loss if untreated. Host susceptibility is clearly of primary importance and tobacco smoking is a strong environmental risk factor (2)...
February 6, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29408890/electron-spin-resonance-esr-dose-measurement-in-bone-of-hiroshima-a-bomb-victim
#4
Angela Kinoshita, Oswaldo Baffa, Sérgio Mascarenhas
Explosion of the bombs in Hiroshima and Nagasaki corresponds to the only historical moment when atomic bombs were used against civilians. This event triggered countless investigations into the effects and dosimetry of ionizing radiation. However, none of the investigations has used the victims' bones as dosimeter. Here, we assess samples of bones obtained from fatal victims of the explosion by Electron Spin Resonance (ESR). In 1973, one of the authors of the present study (SM) traveled to Japan and conducted a preliminary experiment on the victims' bone samples...
2018: PloS One
https://www.readbyqxmd.com/read/29287661/time-dependent-behavior-of-porcine-periodontal-ligament-a-combined-experimental-numeric-in-vitro-study
#5
Thomas Johannes Knaup, Cornelius Dirk, Susanne Reimann, Ludger Keilig, Meike Eschbach, Heike Korbmacher-Steiner, Christoph Bourauel
INTRODUCTION: The aim of this study was to analyze the time-dependent in-vitro behavior of the periodontal ligament (PDL) by determining the material parameters using specimens of porcine jawbone. Time-dependent material parameters to be determined were expected to complement the results from earlier biomechanical studies. METHODS: Five mandibular deciduous porcine premolars were analyzed in a combined experimental-numeric study. After selecting suitable specimens (excluding root resorption) and preparing the measurement system, the specimens were deflected by a distance of 0...
January 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29287657/plane-to-plane-analysis-of-mandibular-misalignment-in-patients-with-facial-asymmetry
#6
Tung-Yiu Wong, Jia-Kuang Liu, Tung-Chin Wu, Yi-Hsuan Tu, Ken-Chung Chen, Jing-Jing Fang, Ke-Hsin Cheng, Jing-Wei Lee
INTRODUCTION: Little is known regarding how the mandible rotates in facial asymmetry. The purpose of this study was to study mandibular misalignment with a new plane-to-plane analysis method in patients with facial asymmetry. METHODS: Optimal symmetry planes (OSPs) were generated by computing the greatest count of paired voxels on opposing sides of the computerized tomography image of the structure. The mandibular OSP was measured against the midfacial OSP for its alignment...
January 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29274589/exogenous-vegf-introduced-by-bioceramic-composite-materials-promotes-the-restoration-of-bone-defect-in-rabbits
#7
Hedong Yu, Xiantao Zeng, Cai Deng, Congyu Shi, Jun Ai, Weidong Leng
This study aimed to investigate the effect of exogenous vascular endothelial growth factor (VEGF) introduced by bioceramic composite materials on jawbone defect. Rabbits were randomly divided into four groups: control, sham, model, and stent. In the model group, holes of jawbone defect were created through surgery. In the stent group, rabbits with jawbone defect were treated with polyether ketone (PEK)/biphasic bioceramic ((PEK-BBC)) composite materials encapsulating VEGF. At 4, 8, and 16 weeks post-operation, HE and Van Gieson staining of jawbones were performed to characterize the repair status of the bone defect...
December 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29274154/panoramic-and-skull-imaging-may-aid-in-the-identification-of-multiple-myeloma-lesions
#8
K-M Faria, T-B Brandao, W-G Silva, J Pereira, F-S Neves, M-C Alves, W-H Shintaku, M-A Lopes, C-P Ribeiro, C-A Migliorati, A-R Santos-Silva
BACKGROUND: The purpose of this study was to investigate the presence of punched-out lesions in craniofacial bones using three different radiographic protocols in a large cohort of patients. MATERIAL AND METHODS: One hundred fifty-five MM patients were evaluated using panoramic and skull (frontal and lateral) radiographs, which were performed in all patients at the time of MM diagnosis. The diagnostic potential for detecting punched-out lesions was compared among the radiographic techniques...
December 23, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29243679/surgery-related-factors-affecting-the-stability-of-orthodontic-mini-implants-screwed-in-alveolar-process-interdental-spaces-a-systematic-literature-review
#9
Greta Gintautaitė, Alė Gaidytė
The ambiguous results of scientific researches on surgical factors affecting the stability of mini implants (MI) impels the physicians to constantly analyze this problem. The objective of this article was to conduct a systematic literature review about surgery related factors affecting the stability of MI screwed in alveolar process buccal surface between the second premolar and first molar roots based on peer reviewed publications of 2009-2015. The Cochrane and PRISMA references were used while searching for scientific literature...
2017: Stomatologija
https://www.readbyqxmd.com/read/29210080/the-permian-reptile-opisthodontosaurus-carrolli-a%C3%A2-model-for-acrodont-tooth-replacement-and-dental-ontogeny
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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