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https://www.readbyqxmd.com/read/28427837/in-vitro-fatigue-tests-and-in-silico-finite-element-analysis-of-dental-implants-with-different-fixture-abutment-joint-types-using-computer-aided-design-models
#1
Satoshi Yamaguchi, Yasufumi Yamanishi, Lucas S Machado, Shuji Matsumoto, Nick Tovar, Paulo G Coelho, Van P Thompson, Satoshi Imazato
PURPOSE: The aim of this study was to evaluate fatigue resistance of dental fixtures with two different fixture-abutment connections by in vitro fatigue testing and in silico three-dimensional finite element analysis (3D FEA) using original computer-aided design (CAD) models. METHODS: Dental implant fixtures with external connection (EX) or internal connection (IN) abutments were fabricated from original CAD models using grade IV titanium and step-stress accelerated life testing was performed...
April 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28412235/evaluation-of-the-efficacy-of-a-metal-artifact-reduction-algorithm-in-different-cone-beam-computed-tomography-scanning-parameters
#2
Polyane Mazucatto Queiroz, Francisco Carlos Groppo, Matheus Lima Oliveira, Francisco Haiter-Neto, Deborah Queiroz Freitas
OBJECTIVE: The aim of this study was to evaluate the efficacy of a metal artifact reduction (MAR) algorithm in cone beam computed tomography (CBCT) images of dental materials obtained with different field-of-view (FOV) and voxel sizes. STUDY DESIGN: Two imaging phantoms were custom-made of acrylic resin. Each phantom had 3 cylinders made of the same dental material: dental amalgam or copper-aluminum alloy. CBCT scans were obtained separately for each of the imaging phantoms using the Picasso-Trio CBCT (Vatech, Hwaseong, Republic of Korea) unit at 4 FOV sizes and 2 voxel sizes...
March 9, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28410381/qualitative-analysis-of-the-impact-of-oral-potentially-malignant-disorders-on-daily-life-activities
#3
Jyothi Tadakamadla, Santhosh Kumar, Ratilal Lalloo, Newell W Johnson
OBJECTIVE: To evaluate the impact of Oral Potentially Malignant Disorders (OPMD) on daily life activities. MATERIALS AND METHODS: Patients diagnosed with Oral Leukoplakia, Oral submucous fibrosis and Oral Lichen Planus attending the Oral Medicine clinic of Panineeya Institute of Dental Sciences & Research Centre, Hyderabad, India were invited to participate. Eighteen interviews and three focus groups were conducted in a non-clinical setting. Voice recordings were transcribed and translated from Telugu to English...
2017: PloS One
https://www.readbyqxmd.com/read/28407514/age-estimation-from-structural-changes-of-teeth-and-buccal-alveolar-bone-level
#4
K K Koh, J S Tan, P Nambiar, Norliza Ibrahim, Sunil Mutalik, Muhammad Khan Asif
Forensic odontology plays a vital role in the identification and age estimation of unknown deceased individuals. The purpose of this study is to estimate the chronological age from Cone-Beam Computed Tomography (CBCT) images by measuring the buccal alveolar bone level (ABL) to the cemento-enamel junction and to investigate the possibility of employing the age-related structural changes of teeth as studied by Gustafson. In addition, this study will determine the forensic reliability of employing CBCT images as a technique for dental age estimation...
April 1, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28401164/dental-age-in-orthodontic-patients-with-different-skeletal-patterns
#5
Tomislav Lauc, Enita Nakaš, Melina Latić-Dautović, Vildana Džemidžić, Alisa Tiro, Ivana Rupić, Mirjana Kostić, Ivan Galić
Objective. To evaluate the difference between chronological and dental age, calculated by Willems and Cameriere methods, in various skeletal patterns according to Steiner's ANB Classification. Methods. This retrospective cross-sectional study comprised the sample of 776 participants aged between 7 and 15 years (368 males and 408 females). For each participant, panoramic images (OPT) and laterolateral cephalograms (LC) were collected from the medical database. On LC ANB angle was measured; on OPT dental age (DA) was calculated while chronological age (CA) and sex were recorded...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28394247/erratum
#6
(no author information available yet)
In the 42(5), October 2016, issue of Journal of Oral Implantology, the article titled, "Accuracy of Dynamic Navigation for Dental Implant Placement-Model-Based Evaluation," by Robert W. Emery, Scott A. Merritt, Kathryn Lank, and Jason D. Gibbs was published with an incomplete Acknowledgment. The correct Acknowledgment statement is as follows: "This work was conducted using a grant provided by X-Nav Technologies, LLC. Robert W. Emery is the Chief Medical Officer of X-Nav Technologies, LLC, and has an equity interest in X-Nav Technologies, LLC...
April 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28392311/two-examples-of-indication-specific-radiation-dose-calculations-in-dental-cbct-and-multidetector-ct-scanners
#7
Andreas Stratis, Guozhi Zhang, Xochitl Lopez-Rendon, Constantinus Politis, Robert Hermans, Reinhilde Jacobs, Ria Bogaerts, Eman Shaheen, Hilde Bosmans
PURPOSE: To calculate organ doses and estimate the effective dose for justification purposes in patients undergoing orthognathic treatment planning purposes and temporal bone imaging in dental cone beam CT (CBCT) and Multidetector CT (MDCT) scanners. METHODS: The radiation dose to the ICRP reference male voxel phantom was calculated for dedicated orthognathic treatment planning acquisitions via Monte Carlo simulations in two dental CBCT scanners, Promax 3D Max (Planmeca, FI) and NewTom VGi evo (QR s...
April 6, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28390459/effectiveness-of-xylitol-in-reducing-dental-caries-in-children
#8
Abdullah A Marghalani, Emilie Guinto, Minhthu Phan, Vineet Dhar, Norman Tinanoff
PURPOSE: The purpose of this study was to evaluate the effectiveness of xylitol in reducing dental caries in children compared to no treatment, a placebo, or preventive strategies. METHODS: MEDLINE via PubMed, Web of Science, and Cochrane Central Register of Controlled Trials (CENTRAL) were searched from January 1, 1995 through Sept. 26, 2016 for randomized and controlled trials on children consuming xylitol for at least 12 months. The primary endpoint was caries reduction measured by mean decayed, missing, and filled primary and permanent surfaces/ teeth (dmfs/t, DMFS/T, respectively)...
March 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/28390131/radiodensitometric-study-for-evaluation-of-bone-mineral-density-around-dental-implants-after-zoledronic-acid-treatment-in-ovariectomized-rats
#9
S Dikicier, E Dikicier, U Karacayli, B Erguder
BACKGROUND: The purpose of this study was to evaluate the effects of intravenous zoledronic acid applied systemically on osseointegration of dental implants and the surrounding bone mineral density (BMD) in the ovariectomized rats. MATERIAL AND METHODS: 36 rats were divided into three groups: control (CTRL), ovariectomy (OVX), and ovariectomy-zoledronic acid (OVX/ZOL). The rats in the CTRL group underwent sham surgery, while rats in OVX and OVX / ZOL group underwent ovariectomy...
April 8, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28384979/correlation-between-visible-length-of-the-iris-and-the-length-of-the-maxillary-central-incisor-using-digital-image-analysis-a-pilot-study
#10
Rohini, Hemalatha, Gopi Naveen Chander, Kuttae Viswanathan Anitha
INTRODUCTION: Complete denture therapy is one such modality where science and art goes hand in hand. Selection of artificial teeth for completely edentulous patients is not easy in the absence of pre extraction records, because till date concrete guidelines do not exist. AIM: The purpose of this study was to determine if a correlation existed between the visible length of the iris and the length of the maxillary central incisor to potentially provide a guide for teeth selection...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28375564/effects-of-histone-deacetylase-inhibitors-on-regenerative-cell-responses-in-human-dental-pulp-cells
#11
Z Luo, Z Wang, X He, N Liu, B Liu, L Sun, J Wang, F Ma, H Duncan, W He, P Cooper
AIM: To investigate the growth, migratory and adhesive effects of Trichostatin A (TSA) and Valproic acid (VPA), two HDACis, on hDPSCs. METHODOLOGY: To verify that TSA or VPA functions as an HDAC inhibitor, the expressions of histone H3 and H4 were examined using Western blotting analysis. hDPSC growth and metabolic activity was evaluated by MTT viability analysis at different time-points and by cell count experiments. The expression of cell cycle regulatory and the apoptosis associated proteins were examined by Western blot analysis...
April 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28368878/eighteen-month-outcomes-of-titanium-frameworks-using-computer-aided-design-and-computer-aided-manufacturing-method
#12
Ilser Turkyilmaz, Neset Volkan Asar
PURPOSE: The aim of the report is to introduce a new software and a new scanner with a noncontact laser probe and to present outcomes of computer-aided design and computer-aided manufacturing titanium frameworks using this new software and scanner with a laser probe. MATERIALS AND METHODS: Seven patients received 40 implants placed using a 1-stage protocol. After all implants were planned using an implant planning software (NobelClinician), either 5 or 6 implants were placed in each edentulous arch...
March 31, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28366197/anterior-dental-microwear-textures-show-habitat-driven-variability-in-neandertal-behavior
#13
Kristin L Krueger, Peter S Ungar, Debbie Guatelli-Steinberg, Jean-Jacques Hublin, Alejandro Pérez-Pérez, Erik Trinkaus, John C Willman
The causes of Neandertal anterior tooth wear patterns, including labial rounding, labial scratches, and differential anterior-posterior wear, have been debated for decades. The most common explanation is the "stuff-and-cut" hypothesis, which describes Neandertals clamping down on a piece of meat and slicing a portion close to their lips. "Stuff-and-cut" has been accepted as a general aspect of Neandertal behavior without fully assessing its variability. This study analyzes anterior dental microwear textures across habitats, locations, and time intervals to discern possible variation in Neandertal anterior tooth-use behavior...
April 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28364571/3d-multislice-and-cone-beam-computed-tomography-systems-for-dental-identification
#14
REVIEW
Hana Eliášová, Taťjana Dostálová
3D Multislice and Cone-beam computed tomography (CBCT) in forensic odontology has been shown to be useful not only in terms of one or a few of dead bodies but also in multiple fatality incidents. 3D Multislice and Cone-beam computed tomography and digital radiography were demonstrated in a forensic examination form. 3D images of the skull and teeth were analysed and validated for long ante mortem/post mortem intervals. The image acquisition was instantaneous; the images were able to be optically enlarged, measured, superimposed and compared prima vista or using special software and exported as a file...
2017: Prague Medical Report
https://www.readbyqxmd.com/read/28361030/the-development-of-a-learning-management-system-for-dental-radiology-education-a-technical-report
#15
Hee-Jin Chang, Khanthaly Symkhampha, Kyung-Hoe Huh, Won-Jin Yi, Min-Suk Heo, Sam-Sun Lee, Soon-Chul Choi
PURPOSE: This study was conducted to suggest the development of a learning management system for dental radiology education using the Modular Object-Oriented Dynamic Learning Environment (Moodle). MATERIALS AND METHODS: Moodle is a well-known and verified open-source software-learning management system (OSS-LMS). The Moodle software was installed on a server computer and customized for dental radiology education. The system was implemented for teaching undergraduate students to diagnose dental caries in panoramic images...
March 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28343673/digital-technique-for-in%C3%A2-vivo-assessment-of-internal-and-marginal-fit-of-fixed-dental-prostheses
#16
Ji-Man Park, Christoph H F Hämmerle, Goran I Benic
Digital approaches to assess the misfit of fixed dental prostheses have been limited to in vitro evaluation. The present article describes a fully digital technique for the in vivo assessment of the fit of fixed dental prostheses by means of a chairside optical scanner and software for 3-dimensional (3D) analysis. The 3D digital capture is performed in 3 steps: an extraoral scan of the restoration, an intraoral scan of the abutment tooth, and an intraoral registration scan of the restoration positioned on the abutment tooth...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28337843/exploring-the-role-of-the-dental-hygienist-in-reducing-oral-health-disparities-in-canada-a-qualitative-study
#17
J Farmer, S Peressini, H P Lawrence
OBJECTIVES: Reducing oral health disparities has been an ongoing challenge in Canada with the largest burden of oral disease exhibited in vulnerable populations, including Aboriginal people, the elderly, rural and remote residents, and newcomers. Dental hygienists are a unique set of professionals who work with and within communities, who have the potential to act as key change agents for improving the oral health of these populations. The purpose of this qualitative study was to explore, from the dental hygiene perspective, the role of dental hygienists in reducing oral health disparities in Canada...
March 24, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28337012/preparedness-of-undergraduate-dental-students-in-the-united-kingdom-a-national-study
#18
K Ali, A Slade, E Kay, D Zahra, C Tredwin
Aims To evaluate the self-perceived preparedness of final year dental undergraduate students in the United Kingdom.Methods Dental undergraduate students in their final year were invited by email through the Dental Schools Council (DSC) to provide their responses to an online preparedness assessment scale. The data analysis was carried out using the RUMM2030 software which is specifically designed for Rasch analysis, a measurement model based on item response theory.Results Students felt adequately prepared to carry out simple clinical procedures and communication skills...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28327265/association-between-body-mass-index-and-caries-experience-in-brazilian-children-and-adolescents
#19
Raquel Assed Bezerra da Silva, Driely Barreiros, Sara Oliveira, Lea Assed Bezerra da Silva, Paulo Nelson-Filho, Erika Calvano Küchler
PURPOSE: The purpose of this study was to evaluate the association between caries and body mass index (BMI) deviations in Brazilian schoolchildren and adolescents. METHODS: A total of 237 three- to 15-year-old children, all undergoing treatment in a university pediatric dental clinic, was evaluated. Caretakers answered a questionnaire on sociodemographic, ethnicity, oral hygiene, and dietary information. The children's height was measured in centimeters, the weight in kilograms, and BMIs were calculated...
September 15, 2016: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28327261/sex-differences-in-pediatric-dental-pain-perception
#20
Gabriela F Almeida, Daniele L Longo, Mariana Trevizan, Fabrício K de Carvalho, Paulo Nelson-Filho, Erika C Küchler, Alexandra M Queiroz
PURPOSE: To evaluate sex-related differences in dental pain perception in children. METHODS: Fifty-two children who received a dental procedure with local anesthesia were selected to participate. Pain perception levels were assessed with the Wong-Baker FACES Pain Rating Scale. Twenty-four and 48 hours following the procedure, the parents were contacted by phone for a verbal survey to assess their child's postoperative pain. Age, type of dental procedure, and behavior were also evaluated as covariables...
September 15, 2016: Journal of Dentistry for Children
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