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https://www.readbyqxmd.com/read/29021460/a-case-of-dental-technicians-pneumoconiosis
#1
Masaki Okamoto, Masaki Tominaga, Shigeki Shimizu, Chiyo Yano, Ken Masuda, Masayuki Nakamura, Yoshiaki Zaizen, Takashi Nouno, Satoshi Sakamoto, Mitsuru Yokoyama, Tomotaka Kawayama, Tomoaki Hoshino
A 40-year-old female dental technician visited our hospital for the investigation of a chest X-ray abnormality. Chest computed tomography demonstrated centrilobular nodules and lung volume reduction, and her serum KL-6 level was elevated. A histological analysis of the specimens obtained on a surgical lung biopsy showed peribronchiolar fibrosis with pigmented macrophages and cholesterol clefts. An energy-dispersive X-ray analysis showed that these lung tissues contained some metals, including indium. The serum indium level was also elevated...
October 11, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28951037/nanoparticles-in-dentistry
#2
REVIEW
Gottfried Schmalz, Reinhard Hickel, Kirsten L van Landuyt, Franz-Xaver Reichl
OBJECTIVE: Nanoparticles having a size from 1 to 100nm are present in nature and are successfully used in many products of daily life. Nanoparticles are also embedded per se or as byproducts from milling processes of larger filler particles in many dental materials. METHODS AND RESULTS: Recently, possible adverse effects of nanoparticles have gained increased interest with the lungs being a main target organ. Exposure to nanoparticles in dentistry may occur in the dental laboratory, by processing gypsum type products or by grinding and polishing materials...
September 23, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28925546/multidisciplinary-full-mouth-rehabilitation-with-soft-tissue-regeneration-in-the-esthetic-zone
#3
Anja Liebermann, Stefan Frei, Madalena Lucia Pinheiro Dias Engler, Otto Zuhr, Otto Prandtner, Daniel Edelhoff, Reza Saeidi Pour
OBJECTIVE: Oral rehabilitation often requires a multidisciplinary approach including restorative dentistry, prosthodontics, and periodontology to fulfill high esthetic and functional demands, frequently combined with changes in the vertical dimension. The presence of gingival recessions can be associated with numerous factors, such as brushing or preparation trauma and persistent inflammation of the gingiva due to inadequate marginal fit of restorations. Because gingival recessions can cause major esthetic and functional problems, obtaining stability of the gingival tissue around prosthetic restorations is of essential concern...
September 19, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28916163/effects-of-small-grit-grinding-and-glazing-on-mechanical-behaviors-and-ageing-resistance-of-a-super-translucent-dental-zirconia
#4
Xuan Lai, Wenjie Si, Danyu Jiang, Ting Sun, Longquan Shao, Bin Deng
OBJECTIVES: The purpose of this study is to elucidate the effects of small-grit grinding on the mechanical behaviors and ageing resistance of a super-translucent dental zirconia and to investigate the necessity of glazing for the small-grit ground zirconia. METHODS: Small-grit grinding was performed using two kinds of silicon carbide abrasive papers. The control group received no grinding. The unground surfaces and the ground surfaces were glazed by an experienced dental technician...
November 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28902238/dental-ceramics-a-review-of-new-materials-and-processing-methods
#5
REVIEW
Lucas Hian da Silva, Erick de Lima, Ranulfo Benedito de Paula Miranda, Stéphanie Soares Favero, Ulrich Lohbauer, Paulo Francisco Cesar
The evolution of computerized systems for the production of dental restorations associated to the development of novel microstructures for ceramic materials has caused an important change in the clinical workflow for dentists and technicians, as well as in the treatment options offered to patients. New microstructures have also been developed by the industry in order to offer ceramic and composite materials with optimized properties, i.e., good mechanical properties, appropriate wear behavior and acceptable aesthetic characteristics...
August 28, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28887958/photoelastic-analysis-of-mandibular-full-arch-implant-supported-fixed-dentures-made-with-different-bar-materials-and-manufacturing-techniques
#6
Danilo Zaparolli, Raniel Fernandes Peixoto, Denise Pupim, Ana Paula Macedo, Marcelo Bighetti Toniollo, Maria da Glória Chiarello de Mattos
PURPOSE: To compare the stress distribution of mandibular full dentures supported with implants according to the bar materials and manufacturing techniques using a qualitative photoelastic analysis. MATERIAL AND METHODS: An acrylic master model simulating the mandibular arch was fabricated with four Morse taper implant analogs of 4.5×6mm. Four different bars were manufactured according to different material and techniques: fiber-reinforced resin (G1, Trinia, CAD/CAM), commercially pure titanium (G2, cpTi, CAD/CAM), cobalt‑chromium (G3, Co-Cr, CAD/CAM) and cobalt‑chromium (G4, Co-Cr, conventional cast)...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28864804/exploring-current-and-future-roles-of-non-dental-professionals-implications-for-dental-hygiene-education
#7
Hannah L Maxey, Christine Farrell, Anne Gwozdek
The health care system is undergoing transformation in which oral health is not only valued as an aspect of overall health, but health care delivery systems are aligning to better deliver total patient care. As a result of this transformation, education for many non-dental professionals incorporates oral health content to prepare them to practice in comprehensive delivery models. While some non-dental professionals already incorporate oral health care in their service, many opportunities exist for expansion of oral health care delivery by other non-dental professionals, including radiologic technicians, nursing staff, and human services professionals...
September 2017: Journal of Dental Education
https://www.readbyqxmd.com/read/28725128/quality-of-communication-between-dentists-and-dental-laboratory-technicians-for-fixed-prosthodontics-in-riyadh-saudi-arabia
#8
Huda Tulbah, Eman AlHamdan, Amal AlQahtani, Asma AlShahrani, Mona AlShaye
The fabrication of a clinically acceptable dental prosthesis requires proper communication between the dentist and the dental technician. Prosthodontic educators have been concerned with this interaction and communication. Fixed prosthodontics laboratories revealed that the technicians are often dissatisfied with the information provided in work authorizations. OBJECTIVE: To evaluate the quality of communication between dentists and laboratory technicians via work authorizations for fixed prosthodontics in both governmental and private dental laboratories in Riyadh area from the technician's perspective...
July 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28703836/monolithic-zirconia-and-digital-impression-case-report
#9
F De Angelis, E Brauner, G Pignatiello, F Mencio, D Rosella, P Papi, T Di Carlo, A Giovannetti, G Pompa, S Di Carlo
AIMS: The aim of this study is to present a clinical case of a full arch prosthetic rehabilitation on natural teeth, combining both digital work-flow and monolithic zirconia. PATIENTS AND METHODS: Digital impression was taken with an intraoral optical scanner (CS3500, Carestream Dental, Atlanta, GA, USA). A prosthetic rehabilitation was realized on natural teeth using monolithic zirconia from 1.6 to 1.4 and from 2.7 to 2.4 frameworks, while in the aesthetic area (from 2...
July 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28691451/survey-results-of-currently-used-techniques-and-materials-by-dentists-for-fabrication-of-complete-removable-dental-prostheses
#10
A Meirowitz, R Nowotny Klein, D Lauritano, N Harel, J Block, S Matalon, F Carinci, Z Ormianer
The present study was based on the screening of procedures and materials used by dentists in constructing complete removable dental prostheses, considering their professional background and years of experience. Questions arose regarding differences and similarities within the local dental society, of which approximately 75% were trained in Europeans countries with differences in academic background, and compared to international dentistry. A questionnaire web site was used in order to anonymously collect answers to the survey by general practicing and specialist dentists...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28685563/allergic-contact-dermatitis-to-acrylates
#11
P Romita, C Foti, L Masciopinto, E Nettis, E Di Leo, G Calogiuri, D Bonamonte, G Angelini, G Dipalma, A Ballini, F Inchingolo
Acrylates and methacrylates are a large group of chemically reactive monomers that are polymerized into acrylic plastics. These have very broad applications in glues, coatings and various plastic materials. Allergic contact dermatitis (ACD) caused by acrylates can be occupational, mainly in dentistry workers during the manufacturing and implantation of dental prosthesis, and in nail technicians during the sculpturing and application of artificial nails. The clinical manifestations vary according to the location of the contact...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28678955/a-forensic-identification-case-and-dpid-can-it-be-a-useful-tool
#12
Cristhiane Leão de Queiroz, Ellen Marie Bostock, Carlos Ferreira Santos, Marco Aurélio Guimarães, Ricardo Henrique Alves da Silva
Objective: The aim of this study was to show DPid as an important tool of potential application to solve cases with dental prosthesis, such as the forensic case reported, in which a skull, denture and dental records were received for analysis. Material and Methods: Human identification is still challenging in various circumstances and Dental Prosthetics Identification (DPid) stores the patient's name and prosthesis information and provides access through an embedded code in dental prosthesis or an identification card...
May 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28653050/elabor_aid-a-new-approach-%C3%A2-to-digital-shade-management
#13
Sascha Hein, Javier Tapia, Panaghiotis Bazos
Contemporary dental patients present with high expectations and demand seamless optical integration of restorative interventions. As a result, clinicians and technicians are required to develop methodologies that remain practical yet increase the accuracy and objectivity of shade analysis and estimation. There have been significant advances in digital technologies over the past 20 years, with digital photography being at the forefront. Digital photography has made an immediate and profound impact on applied clinical dentistry, primarily due to instantaneous image visualization and distribution...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28567141/reproducibility-of-a-digital-method-to-evaluate-soft-tissue-modifications-a-study-of-inter-and-intra-operative-measurement-concordance
#14
Davide Rancitelli, Marco Cicciù, Francesco Lini, Davide Fumagalli, Anna Chiara Frigo, Carlo Maiorana
BACKGROUND: The soft tissue healing and quality around dental implant is a current debated topic in the recent literature. The free gingival margin and the quantity and quality of the mucosa around teeth and surrounding dental implants still determine the hard and soft tissue healing status. OBJECTIVE: The aim of this study is to assess inter and intra-operative measurement concordance of a method aimed at evaluating the apico-coronal migration of free gingival margin, using intra-oral photography...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28552289/influence-of-space-size-of-abutment-screw-access-channel-on-the-amount-of-extruded-excess-cement-and-marginal-accuracy-of-cement-retained-single-implant-restorations
#15
Mohammad D Al Amri, Sulieman S Al-Johany, Mohammed N Al-Qarni, Ahmed S Al-Bakri, Nassr S Al-Maflehi, Haythem S Abualsaud
STATEMENT OF PROBLEM: The detrimental effect of extruded excess cement on peri-implant tissue has been well documented. Although several techniques have been proposed to reduce this effect by decreasing the amount of extruded cement, how the space size of the abutment screw access channel (SAC) affects the amount of extruded cement and marginal accuracy is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the effect of the size of the unfilled space of the abutment SAC on the amount of extruded excess cement and the marginal accuracy of zirconia copings...
May 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28546591/the-healthcare-system-and-the-provision-of-oral-healthcare-in-european-union-member-states-part-8-italy
#16
M Bindi, C Paganelli, K A Eaton, E Widström
In Italy healthcare is provided for all Italian citizens and residents and it is delivered mainly by public providers, with some private or private-public entities. Italy's public healthcare system - the Servizio Sanitario Nazionale (SSN) - is organised by the Ministry of Health and administered on a devolved regional basis. It is financed by general taxation that provides universal coverage, largely free of charge at the point of service. The central government establishes the basic national health benefits package, which must be uniformly provided throughout the country, through services guaranteed under the NHS provision called LEA - (Livelli Essenziali di Assistenza [Essential Level of Assistance]) and allocates national funds to the regions...
May 26, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28496253/survey-on-the-use-of-cad-cam-technology-by-uk-and-irish-dental-technicians
#17
E Blackwell, M Nesbit, H Petridis
Statement of the problem Digital workflows (CAD/CAM) have been introduced in dentistry during recent years. No published information exists on dental technicians' use and reporting of this technology.Purpose The aim of this cross sectional survey was to identify the extent digital technology has infiltrated the workplace and to investigate the factors affecting the use of CAD-CAM technology by dental laboratory technicians within Ireland and the UK.Materials and methods A web-based questionnaire was composed (Opinio, Object Planet Inc...
May 12, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28462405/monolithic-zirconia-reconstructions-supported-by-teeth-and-implants-1-to-3-year-results-of-a-case-series
#18
Andreas Worni, Joannis Katsoulis, Lumni Kolgeci, Mathias Worni, Regina Mericske-Stern
OBJECTIVE: Today, only scarce information is available on monolithic zirconia reconstructions. The objective of this study was to evaluate the performance of monolithic zirconia for tooth- and implant-borne reconstructions. METHOD AND MATERIALS: Monolithic zirconia single crowns (SCs) and fixed dental prostheses (FDPs) supported by implants or teeth were included in this study. Implant placement and prosthetic treatment were done in the same clinical setting. One technician performed all laboratory work using the same CAD/CAM workflow (DentalDesigner, Ceramill Motion 2, Amann Girrbach)...
April 28, 2017: Quintessence International
https://www.readbyqxmd.com/read/28409856/pleural-malignant-mesothelioma-in-dental-laboratory-technicians-a-case-series
#19
Carolina Mensi, Francesco Ciullo, Gino Pietro Barbieri, Luciano Riboldi, Anna Somigliana, Giulio Rasperini, Angela Cecilia Pesatori, Dario Consonni
Asbestos was used in dentistry as a binder in periodontal dressings and as lining material for casting rings and crucible. However, until now, only one case of malignant mesothelioma with occupational exposure to asbestos in dental practice has been reported. We present 4 pleural mesotheliomas out of 5344 cases identified in Lombardy, Italy, in 2000-2014. Three men had been working as dental laboratory technicians, with asbestos exposure for 10, 34, and 4 years, and one woman had been helping her husband for 30 years in manufacturing dental prostheses...
May 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28409763/work-related-musculoskeletal-disorders-among-jordanian-dental-technicians-prevalence-and-associated-factors
#20
Zeid Al-Hourani, Mohammad Nazzal, Yousef Khader, Khader Almhdawi, Abdel Rahim Bibars
BACKGROUND: Dental technology is a profession that requires precise manual skills and dexterous handling of small tools. There is an abundance research on work-related musculoskeletal disorders (WMSDs) affecting dentists, dental hygienists and dental assistants, yet very few articles investigated WMSDs among dental technicians. OBJECTIVES: This study aimed to determine the prevalence of WMSDs among Jordanian dental technicians and their associated factors. METHODS: A cross-sectional design was conducted...
2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
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