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https://www.readbyqxmd.com/read/29327359/contact-sensitization-in-dental-technicians-with-occupational-contact-dermatitis-data-of-the-information-network-of-departments-of-dermatology-ivdk-2001-2015
#1
Annice Heratizadeh, Thomas Werfel, Steffen Schubert, Johannes Geier
BACKGROUND: Dental technicians (DTs) are at increased risk for allergic contact sensitization. OBJECTIVES: To assess the current spectrum of occupational sensitization in DTs with occupational contact dermatitis (OCD). METHODS: A retrospective analysis of Information Network of Departments of Dermatology patch test data from the years 2001-2015 concerning DTs with OCD was performed. RESULTS: Patients of the study group (226 DTs with OCD) were significantly more often diagnosed with allergic contact dermatitis (37...
January 12, 2018: Contact Dermatitis
https://www.readbyqxmd.com/read/29326443/aesthetic-possibilities-in-removable-prosthodontics-part-1-the-aesthetic-spectrum-from-perfect-to-personal
#2
J N Besford, A F Sutton
Patients requiring dentures are getting older and as a result can be difficult to treat owing to various co-morbidities. This series of papers presents an overview of the processes involved in making removable dentures which the patient considers to be functionally and aesthetically successful. We hope not only to provide technical suggestions but also to address the issue of the clinician's, technician's and dental nurse's relationships with the dentally depleted patient. It is increasingly clear from defence organisation reports that this has a decisive effect on the success of this fundamentally difficult enterprise ('The only branch of dentistry in which you are trying to attach something to nothing' [Hubert Aïche])...
January 12, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29314277/erasmus-syndrome-associated-with-an-immune-thrombocytopenic-purpura
#3
Maxime Fouchard, Brigitte Pan Petesch, Claire Abasq-Thomas, Alain Saraux, Laurent Misery, Emilie Brenaut
We report the observation of a 57-year-old patient followed for an Erasmus syndrome (a systemic sclerosis developing secondary to silica exposure) (1) diagnosed in 2002 after being exposed as a dental technician, for whom a severe thrombocytopenia was discovered. He suffered from a pulmonary fibrosis, polyarthralgia, esophageal dysphagia and cutaneous involvement such as finger ulcerations and sclerodactylia. The treatment was made of nifedipine 30mg/day, esomeprazole 20mg/day and bosentan 25 mg twice a day...
January 5, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29258642/career-focus-film-falsies
#4
Amy Brewerton
Dental technician Gary Archer makes removable prosthodontic devices for hollywood movies. he shares some of the tricks of the trade with PDJ managing editor Amy Brewerton.
December 1, 2017: Primary Dental Journal
https://www.readbyqxmd.com/read/29249878/infection-control-knowledge-and-practice-a-cross-sectional-survey-on-dental-laboratories-in-dental-institutes-of-north-india
#5
Sakshi Gupta, Sapna Rani, Sandeep Garg
Aim and Objectives: The aim of the study was to assess the knowledge of dental laboratory technicians regarding infection control and modes of infection control employed by them. Settings and Design: A self-assessment questionnaire-based survey was carried out among dental technicians to assess the knowledge and practice of infection control in dental laboratories. Materials and Methods: Survey instrument containing 16 questions were randomly distributed to 70 dental colleges of North India regarding knowledge of infection control methods and infection control practised in laboratories...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29240213/minimally-invasive-treatment-of-an-ankylosed-severely-discolored-and-intruded-central-incisor-with-a-masking-ceramic-veneer-a-clinical-report
#6
Anja Liebermann, Daniel Edelhoff, Otto Prandtner, Reza Saeidi Pour
Dental therapy of traumatically ankylosed maxillary anterior teeth with an additional slight root resorption represents a great challenge for the restorative team and requires intensive planning and communication between patient, dentist, orthodontist, periodontist, and dental technician. The inhibition of vertical growth often makes dental intervention indispensable. Porcelain laminate veneers have been successfully used for more than two decades, mainly on anterior teeth, and was the minimally invasive treatment option for the present case report...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29233132/intraoral-scanners-in-dentistry-a-review-of-the-current-literature
#7
Francesco Mangano, Andrea Gandolfi, Giuseppe Luongo, Silvia Logozzo
BACKGROUND: Intraoral scanners (IOS) are devices for capturing direct optical impressions in dentistry. The purpose of this narrative review on the use of IOS was to: (1) identify the advantages/disadvantages of using optical impressions compared to conventional impressions; (2) investigate if optical impressions are as accurate as conventional impressions; (3) evaluate the differences between the IOS currently available commercially; (4) determine the current clinical applications/limitations in the use of IOS...
December 12, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29178932/herbst-appliance-with-skeletal-anchorage-versus-dental-anchorage-in-adolescents-with-class-ii-malocclusion-study-protocol-for-a-randomised-controlled-trial
#8
Klaus Barretto Dos Santos Lopes Batista, Tatiana Lima, Nathália Palomares, Felipe de Assis Carvalho, Cátia Quintão, José Augusto Mendes Miguel, Yin-Ling Lin, Ting-Li Su, Kevin O'Brien
BACKGROUND: The Herbst appliance is an orthodontic appliance that is used for the correction of class II malocclusion with skeletal discrepancies. Research has shown that this is effective. However, a potential harm is excessive protrusion of the lower front teeth. This is associated with gingival recession, loss of tooth support, and root resorption. This trial evaluates a method of reducing this problem. METHODS/DESIGN: The study is a single-center, randomised, assessor-blinded, superiority clinical trial with parallel 1:1 allocation...
November 25, 2017: Trials
https://www.readbyqxmd.com/read/29107684/ethylene-glycol-dimethacrylate-and-diethylene-glycol-dimethacrylate-exhibits-cytotoxic-and-genotoxic-effect-on-human-gingival-fibroblasts-via-induction-of-reactive-oxygen-species
#9
Anna Bielecka-Kowalska, Piotr Czarny, Paulina Wigner, Ewelina Synowiec, Bartosz Kowalski, Marzena Szwed, Renata Krupa, Monika Toma, Malgorzata Drzewiecka, Ireneusz Majsterek, Janusz Szemraj, Tomasz Sliwinski, Michał Kowalski
Although methacrylic acid derivatives in their polymeric form are considered to be safe, insufficient polymerization and the release of monomers due to either mechanical or enzymatical factors can lead to their reaching millimolar concentrations in local tissue. The present study evaluates the effect of two methacrylate monomers - ethylene glycol dimethacrylate (EGDMA) and diethylene glycol dimethacrylate (DEGDMA) - on human gingival fibroblasts (HGFs). Both monomers were found to reduce cells viability in MTT assay, increase apoptosis and cause cell cycle arrest in G1/G0 phase...
October 28, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29084294/computer-aided-design-computer-assisted-manufacture-monolithic-restorations-for-severely-worn-dentition-a-case-history-report
#10
Samir Abou-Ayash, Johannes Boldt, Alexander Vuck
Full-arch rehabilitation of patients with severe tooth wear due to parafunctional behavior is a challenge for dentists and dental technicians, especially when a highly esthetic outcome is desired. A variety of different treatment options and prosthetic materials are available for such a clinical undertaking. The ongoing progress of computer-aided design/computer-assisted manufacture technologies in combination with all-ceramic materials provides a predictable workflow for these complex cases. This case history report describes a comprehensive, step-by-step treatment protocol leading to an optimally predictable treatment outcome for an esthetically compromised patient...
November 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29021460/a-case-of-dental-technicians-pneumoconiosis
#11
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
#12
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...
November 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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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