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https://www.readbyqxmd.com/read/27881314/orientation-of-handle-for-successful-prosthetic-treatment-in-patients-with-an-anatomic-compromise-after-a-maxillectomy
#1
Yuka I Sumita, Mariko Hattori, Mahmoud E Elbashti, Hisashi Taniguchi
This clinical technique provides a key procedure for successful prosthetic treatment in patients with an anatomical compromise after a maxillectomy. When making a preliminary impression, the clinician must keep the handle of the stock tray parallel to the patient's interpupillary line extraorally to maintain the correct position of the tray and to make a record of the inclination of the occlusal plane. This simple consideration during this first step of making a preliminary impression can be an important guide for both dentists and dental technicians...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27870167/design-of-complete-dentures-by-adopting-cad-developed-for-fixed-prostheses
#2
Yanfeng Li, Weili Han, Jing Cao, Yuan Iv, Yue Zhang, Yishi Han, Yi Shen, Zheng Ma, Huanyue Liu
The demand for complete dentures is expected to increase worldwide, but complete dentures are mainly designed and fabricated manually involving a broad series of clinical and laboratory procedures. Therefore, the quality of complete dentures largely depends on the skills of the dentist and technician, leading to difficulty in quality control. Computer-aided design and manufacturing (CAD/CAM) has been used to design and fabricate various dental restorations including dental inlays, veneers, crowns, partial crowns, and fixed partial dentures (FPDs)...
November 21, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27811863/histo-anatomic-3d-printing-of-dental-structures
#3
J Schweiger, F Beuer, M Stimmelmayr, D Edelhoff, P Magne, J F Güth
The creation of dental restorations with natural appearance and biomechanics represents a major challenge for the restorative team. The manufacturing-process of high-aesthetic restorations from tooth-coloured restorative materials is currently dominated by manual manufacturing procedures and the outcome is highly dependent on the knowledge and skills of the performing dental technician. On the other hand, due to the simplicity of the manufacturing process, CAD/CAM restorations from different material classes gain more and more acceptance in the daily routine...
November 4, 2016: British Dental Journal
https://www.readbyqxmd.com/read/27808351/die-cad-cam-gefertigte-totalprothese-mit-dem-%C3%A2-digital-denture-professional-system%C3%A2
#4
Tim Joda, Philipp Müller, Frank Zimmerling, Martin Schimmel
The article describes the medical and dental procedures for four treatment sessions with the Digital Denture Professional (DDP) system. First, conventional preliminary dental impressions of the full arch are taken to achieve accurate jaw positioning records. The study models and patient data are digitalised using a laboratory scanner. The dental lab technician then constructs and mills custom impression trays and a mount as an intraoral instrument. A closed-mouth impression is then taken to record vertical dimensions and central relation position...
2016: Swiss Dental Journal
https://www.readbyqxmd.com/read/27770938/biological-and-mechanical-characterization-of-carbon-fiber-frameworks-for-dental-implant-applications
#5
Maria Menini, Paolo Pesce, Francesco Pera, Fabrizio Barberis, Alberto Lagazzo, Ludovica Bertola, Paolo Pera
OBJECTIVES: The aim of the present study was to investigate the biocompatibility and mechanical characteristics of dental implant frameworks made of carbon fiber composite. METHODS: The biocompatibility of intact samples and fragments was evaluated by cell count and MTT test according to EN-ISO 10993-5:2009 directions. Destructive and non-destructive mechanical tests were performed in order to evaluate: porosity, static and dynamic elastic modulus of carbon fiber samples...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27755862/socio-demographic-and-clinical-characteristics-of-turkish-workers-with-pneumoconiosis
#6
Hilal Altınöz, Cengiz Çelikkalkan, Gönül Dinç Horasan, Fatih Hamşioğlu, Nalan Cengiz, Hikmet Orbay
AIM: Pneumoconiosis is caused by inhaling dust. The aim of the study was to analyze 208 cases of workers' pneumoconiosis. METHOD: Patients' files were used for the descriptive study. RESULTS: All patients were male aged 38.82±13 years. The most important symptom was breathlessness. Patients were denim sandblasters (50.5%), dental technicians (12%), coal miners (6.7%), and others. The mean exposure time before pneumoconiosis occurred was shorter in denim sandblasters and teflon kitchenware producers compared to other occupations (5...
September 2016: Central European Journal of Public Health
https://www.readbyqxmd.com/read/27747638/occlusal-status-of-implant-superstructures-at-mandibular-first-molar-immediately-after-setting
#7
Yukihiko Okada, Yuji Sato, Noboru Kitagawa, Keiichiro Uchida, Tokiko Osawa, Yoshiki Imamura, Mayumi Terazawa
BACKGROUND: Occlusal contact on the implant superstructures is important for successful treatment. The purpose of this study was to investigate the occlusal contact of single implant superstructures at the mandibular first molar immediately after seating from weak to strong clenching. METHODS: Subjects were nine patients who had just been fitted with an implant prosthesis in the mandibular first molar region, with no missing teeth other than in the implant region...
December 2015: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27747626/current-status-of-implant-prosthetics-in-japan-a-survey-among-certified-dental-lab-technicians
#8
Yoshiyuki Hagiwara, Tatsuya Narita, Yohei Shioda, Keisuke Iwasaki, Takayuki Ikeda, Shunsuke Namaki, Thomas J Salinas
BACKGROUND: There are many implant cases in which dental technicians take initiative with regard to the design of implant prostheses, and to a certain extent, this area of care is one in which dentists do not necessarily play the leading role. Moreover, inadequate communication between dental technicians and dentists and insufficient instructions for technicians has been highlighted as issues in the past. The purpose of this questionnaire is to improve the quality of implant prostheses and thereby contribute to patient service by clarifying, among other aspects of treatment, problem areas and considerations in the fabrication of implant prostheses, conceptual-level knowledge, and awareness of prosthodontics on the part of the dentists in charge of treatment and methods for preventing prosthetic complications...
December 2015: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27746602/knowledge-attitude-and-practice-of-dental-professionals-regarding-the-effect-and-management-of-food-impaction-associated-with-fixed-partial-denture-prostheses-a-survey
#9
Aradhana Nagarsekar, Ridhima Gaunkar, Meena Aras
OBJECTIVE: This survey was undertaken to assess dentist's opinion regarding the occurrence and pattern of food impaction in relation to fixed partial denture (FPD) prostheses, its commonly observed consequences, factors contributing to it, and its management. METHODS: A descriptive survey was conducted on a sample size of 150 dental practitioners. The pro forma consisted of informed consent, demographic information, and questionnaire. The results were tallied and quantitative analysis was performed to obtain the descriptive statistics for the data using SPSS version 20...
October 2016: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/27730217/minimally-invasive-vertical-preparation-design-for-ceramic-veneers
#10
Mario Imburgia, Angelo Canale, Davide Cortellini, Marco Maneschi, Claudio Martucci, Marco Valenti
The esthetic treatment of anterior teeth has always presented a challenge in clinical practice. With the improvement of dental materials, many restorative options such as composite resins, all-ceramic crowns, and ceramic veneers have become available. The current challenge in reconstructive dentistry is to obtain excellent esthetic results while preserving the biological structures involved as much as possible. Thanks to the introduction of high-strength etchable dental ceramics, clinicians and technicians have materials and procedures at their disposal that allow them to restore esthetics and function through a minimally invasive approach...
2016: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/27711027/quantification-of-the-amount-of-dental-material-removed-by-selective-grinding-in-wax-dentures-with-photogrammetric-measurements
#11
Francesco Ravasini, Matteo Fornari, Mauro Bonanini
BACKGROUND: The use of photogrammetry may be a new method to quantify the amount of artificial dental material removed from the surface of each teeth during the grind procedure (SG). SG is necessary in each denture to reach a correct occlusion. It consists in a refine action on the prosthesis teeth's surface using milling machine tools, aimed to remove the interferences (pre-contacts) between upper and lower teeth during chewing. This measure is achieved after a comparison between pre and post-grinding 3D models...
December 2016: Minerva Stomatologica
https://www.readbyqxmd.com/read/27677213/effect-of-dental-technician-disparities-on-the-3-dimensional-accuracy-of-definitive-casts
#12
Faruk Emir, Bulent Piskin, Cumhur Sipahi
STATEMENT OF PROBLEM: No studies have evaluated the effect of dental technician disparities on the accuracy of presectioned and postsectioned definitive casts. PURPOSE: The purpose of this in vitro study was to evaluate the accuracy of presectioned and postsectioned definitive casts fabricated by different dental technicians by using a 3-dimensional computer-aided measurement method. MATERIAL AND METHODS: An arch-shaped metal master model consisting of 5 abutments resembling prepared mandibular incisors, canines, and first molars and with a 6-degree total angle of convergence was designed and fabricated by computer-aided design and computer-aided manufacturing (CAD-CAM) technology...
September 24, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27633504/snapshot-of-cobalt-chromium-and-nickel-exposure-in-dental-technicians
#13
Jolinde Kettelarij, Sara Nilsson, Klara Midander, Carola Lidén, Anneli Julander
BACKGROUND: It is not fully understood where and how people are exposed to sensitizing metals. Much can be learnt from studying occupational settings where metals are handled. OBJECTIVES: To quantify cobalt (Co), chromium (Cr) and nickel (Ni) exposure on the skin and in the air, and urine levels, in dental technicians working with tools and alloys that may result in skin and respiratory exposure. METHODS: The metal skin dose was quantified with acid wipe sampling in dental technicians (n = 13)...
December 2016: Contact Dermatitis
https://www.readbyqxmd.com/read/27606139/respiratory-systems-of-dental-technicians-negatively-affected-during-5-years-of-follow-up
#14
Nurgül Bozkurt, Belkıs Yurdasal, Ali İhsan Bozkurt, Özlem Yılmaz, Mahmut Tekin
BACKGROUND: Dental laboratory technician is one of the professions in which dust exposure is frequently experienced and therefore the health of workers has to be monitored. AIMS: In this study, changes in the pulmonary functions and of pneumoconiosis frequencies among dental technicians after five years were investigated by comparing the results of two screenings carried out in 2008 and 2013. STUDY DESIGN: Cohort study. METHODS: In 2008 and 2013, Provincial Health Directorate carried out two different health screenings covering all of the dental technicians working in dental laboratories in Denizli...
July 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27604085/dental-technician-pneumoconiosis-mimicking-pulmonary-tuberculosis-a-case-report
#15
Han Loong Tan, Mohamed Faisal, Chun Ian Soo, Andrea Y L Ban, Roslina Abdul Manap, Tidi M Hassan
BACKGROUND: Dental laboratory technicians are at risk of developing occupational respiratory diseases due to exposure to various potentially toxic substances in their working environment. Since 1939, few cases of silicosis among dental technician have been reported. CASE PRESENTATION: We illustrate a 38 year-old female, who worked in a dental laboratory for 20 years, initially treated as pulmonary tuberculosis and chronic necrotising aspergillosis without much improvement...
September 7, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27585370/anatomical-sciences-a-foundation-for-a-solid-learning-experience-in-dental-technology-and-dental-prosthetics
#16
Mahmoud M Bakr, C Mark Thompson, Magdalena Massadiq
Basic science courses are extremely important as a foundation for scaffolding knowledge and then applying it in future courses, clinical situations as well as in a professional career. Anatomical sciences, which include tooth morphology, oral histology, oral embryology, and head and neck anatomy form a core part of the preclinical courses in dental technology programs. In this article, the importance and relevance of anatomical sciences to dental personnel with no direct contact with patients (dental technicians) and limited discipline related contact with patients (dental prosthetists) is highlighted...
September 1, 2016: Anatomical Sciences Education
https://www.readbyqxmd.com/read/27583465/statistical-analysis-of-interactive-surgical-planning-using-shape-descriptors-in-mandibular-reconstruction-with-fibular-segments
#17
Megumi Nakao, Shimpei Aso, Yuichiro Imai, Nobuhiro Ueda, Toshihide Hatanaka, Mao Shiba, Tadaaki Kirita, Tetsuya Matsuda
This study was performed to quantitatively analyze medical knowledge of, and experience with, decision-making in preoperative virtual planning of mandibular reconstruction. Three shape descriptors were designed to evaluate local differences between reconstructed mandibles and patients' original mandibles. We targeted an asymmetrical, wide range of cutting areas including the mandibular sidepiece, and defined a unique three-dimensional coordinate system for each mandibular image. The generalized algorithms for computing the shape descriptors were integrated into interactive planning software, where the user can refine the preoperative plan using the spatial map of the local shape distance as a visual guide...
2016: PloS One
https://www.readbyqxmd.com/read/27528989/knowledge-attitude-and-skills-regarding-sports-medicine-among-football-players-and-team-doctors-in-the-football-super-league-in-malawi
#18
C Killowe, N C Mkandawire
A study was conducted among football players and team doctors in the football super league in Malawi to determine the level of knowledge, skills and attitude in sports medicine. One hundred football players and thirteen team doctors were involved in the study. Standardised questionnaires were used to collect data in an interview format. Among the players 37% had completed tertiary education and 60% had finished secondary school education. Most players had poor knowledge on prevention of injuries; had poor advice on diet; used illicit drugs or knew of fellow players using illicit drugs and believed in the role of magic in sports...
June 2005: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/27481079/the-relation-between-the-extent-of-radiological-findings-and-respiratory-functions-in-pneumoconiosis-cases-of-dental-technicians-who-are-working-in-ankara
#19
Dilek Ergün, Recai Ergün, Ender Evcik, Türkan Nadir Öziş, İbrahim Akkurt
INTRODUCTION: In dental technicians, parenchymal changes caused by dust affect pulmonary functions. The evaluation of the relation between radiological scores (chest X-Ray/HRCT) indicating the extent of pulmonary involvement and the severity of functional findings in dental technicians. MATERIALS AND METHODS: 440 dental technicians were evaluated with chest X-Ray, pulmonary function tests (PFTs) and high resolution computed tomography (HRCT). The degree of pulmonary involvement in radiological images was categorized based upon emphysema, the profusion of opacities, ground-glass opacity, honey combing and extent of pleural abnormalities...
December 0: Tüberküloz Ve Toraks
https://www.readbyqxmd.com/read/27475919/customized-procedure-to-display-t-scan-occlusal-contacts
#20
Eneko Solaberrieta, Olatz Etxaniz, Jose Ramon Otegi, Aritza Brizuela, Guillermo Pradies
The virtual technique described in this article integrates reverse engineering and mandibular dynamics into dental computer-aided design and computer-aided manufacturing (CAD-CAM) systems. This technique aims to provide more objective information to the dental technician for the diagnosis, planning, and treatment phases. In order to carry out this protocol, the following devices, currently available in many practices, are necessary: an intraoral scanner, a T-Scan system, and some specific open reverse engineering software...
July 28, 2016: Journal of Prosthetic Dentistry
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