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https://www.readbyqxmd.com/read/27931256/comparison-of-marginal-fit-of-cemented-zirconia-copings-manufactured-after-digital-impression-with-lava%C3%A2-c-o-s-and-conventional-impression-technique
#1
Rinet Dauti, Barbara Cvikl, Alexander Franz, Uwe Yacine Schwarze, Bledar Lilaj, Tina Rybaczek, Andreas Moritz
BACKGROUND: Evaluation of the marginal fit of cemented zirconia copings manufactured after digital impression with Lava™ Chairside Oral Scanner in comparison to that of zirconia copings manufactured after conventional impressions with polyvinyl siloxane. METHODS: A prepared typodont tooth #36, was replicated 40 times with a vinyl silicone and precise model resin. The dies were randomly divided into two groups according to the impression taking technique. Digital impressions with Lava™ C...
December 8, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27928511/latino-hispanic-alzheimer-s-caregivers-experiencing-dementia-related-dressing-issues-corroboration-of-the-preservation-of-self-model-and-reactions-to-a-smart-dresser-computer-based-dressing-aid
#2
Diane Feeney Mahoney, David W Coon, Cecil Lozano
OBJECTIVE: To gain an understanding of Latino/Hispanic caregivers' dementia-related dressing issues, their impressions of using a "smart" context-aware dresser to coach dressing, and recommendations to improve its acceptability. METHOD: The same Latina moderator conducted all the caregiver focus groups. She followed a semi-structured interview guide that was previously used with White and African American family caregivers who experienced Alzheimer's disease related dressing challenges...
November 2016: Digit Health
https://www.readbyqxmd.com/read/27913424/digital-3d-reconstructions-using-histological-serial-sections-of-lung-tissue-including-the-alveolar-capillary-network
#3
Roman Grothausmann, Lars Knudsen, Matthias Ochs, Christian Mühlfeld
The alveolar capillary network (ACN) provides an enormously large surface area that is necessary for pulmonary gas exchange. Changes of the ACN during normal or pathological development or in pulmonary diseases are of great functional impact and warrant further analysis. Due to the complexity of the three-dimensional (3D) architecture of the ACN, 2D approaches are limited in providing a comprehensive impression of the characteristics of the normal ACN or the nature of its alterations. Stereological methods offer a quantitative way to assess the ACN in 3D in terms of capillary volume, surface area or number but lack a 3D visualization to interpret the data...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27881330/improved-digital-impressions-of-edentulous-areas
#4
Ju-Hyoung Lee
No abstract text is available yet for this article.
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881327/accuracy-of-impression-scanning-compared-with-stone-casts-of-implant-impressions
#5
Ragai Edward Matta, Werner Adler, Manfred Wichmann, Siegfried Martin Heckmann
STATEMENT OF PROBLEM: Accurate virtual implant models are a necessity for the fabrication of precisely fitting superstructures. PURPOSE: The purpose of this in vitro study was to evaluate different methods with which to build an accurate virtual model of a 3-dimensional implant in the oral cavity; this model would then be used for iterative computer-aided design and computer-aided manufacturing (CAD-CAM) procedures. MATERIAL AND METHODS: A titanium master model with 3 rigidly connected implants was manufactured and digitized with a noncontact industrial scanner to obtain a virtual master model...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881321/a-digital-approach-integrating-facial-scanning-in-a-cad-cam-workflow-for-complete-mouth-implant-supported-rehabilitation-of-patients-with-edentulism-a-pilot-clinical-study
#6
Bassam Hassan, Beatriz Gimenez Gonzalez, Ali Tahmaseb, Marcus Greven, Daniel Wismeijer
STATEMENT OF PROBLEM: Complete-mouth implant-supported rehabilitations are challenging because of the multiple surgical and prosthetic steps involved in clinical evaluations to assure passive prosthesis fit and optimal esthetic and functional outcomes. As a result, these rehabilitations are usually associated with substantial clinical time, patient discomfort, and high treatment cost. PURPOSE: The purpose of this pilot clinical study was to evaluate a novel digital approach integrating digital intraoral dental and extraoral facial scanning information to design and mill a computer-aided design and computer-aided manufacturing (CAD-CAM) implant-retained prosthesis for patients with complete edentulism...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27876722/-comparative-analysis-of-3d-data-visibility-of-the-prepared-tooth-finishing-line-on-a-synthetic-jaw-model-captured-by-international-scanners-in-a-laboratory-conditions
#7
A N Ryakhovsky, V V Kostyukova
The aim of the study was to compare accuracy of digital impression's finishing line and the zone under it taken by different intraoral scanning systems. Parameters of comparison were: different level of the finishing line to the gingiva and width of sulcus after retraction. For this purpose two synthetic jaw models with prepared teeth were scanned using intraoral scanning systems: 3D Progress (MHT S.P.A., IT - MHT Optic Research AG, CH); True Definition (3M ESPE, USA); Trios (3Shape A/S, DNK); CEREC AC Bluecam, CEREC Omnicam (Sirona Dental System GmbH, DE); Planscan (Planmeca, FIN) (each n=10)...
2016: Stomatologii︠a︡
https://www.readbyqxmd.com/read/27875194/visualization-and-extraction-of-carvings-for-heritage-conservation
#8
Kai Lawonn, Erik Trostmann, Bernhard Preim, Klaus Hildebrandt
We present novel techniques for visualizing, illustrating, analyzing, and generating carvings in surfaces. In particular, we consider the carvings in the plaster of the cloister of the Magdeburg cathedral, which dates to the 13th century. Due to aging and weathering, the carvings have flattened. Historians and restorers are highly interested in using digitalization techniques to analyze carvings in historic artifacts and monuments and to get impressions and illustrations of their original shape and appearance...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27863856/accuracy-of-intraoral-digital-impressions-using-an-artificial%C3%A2-landmark
#9
Jong-Eun Kim, Ami Amelya, Yooseok Shin, June-Sung Shim
STATEMENT OF PROBLEM: Intraoral scanners have been reported to have limited accuracy in edentulous areas. Large amounts of mobile tissue and the lack of obvious anatomic landmarks make it difficult to acquire a precise digital impression of an edentulous area with an intraoral scanner. PURPOSE: The purpose of this in vitro study was to determine the effect of an artificial landmark on a long edentulous space on the accuracy outcomes of intraoral digital impressions...
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27859471/volumetric-changes-at-pontic-sites-with-or-without-soft-tissue-grafting-a-controlled-clinical-study-with-a-10-year-follow-up
#10
Stefan P Bienz, Irena Sailer, Ignacio Sanz-Martin, Ronald E Jung, Christoph H F Hämmerle, Daniel S Thoma
OBJECTIVE: to evaluate volumetric changes of soft tissues at pontic sites in patients treated with or without soft tissue grafting over an observation period of 10 years. MATERIALS AND METHODS: A total of 17 patients receiving a tooth-borne fixed dental prosthesis (FDP) were enrolled in this study. Nine patients received a subepithelial connective tissue graft at the pontic site (test). Eight patients continued without soft tissue grafting (control). Baseline impressions were taken after delivery of the final FDP and at 10 years...
November 17, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27847550/a-split-face-evaluation-to-assess-the-efficacy-of-a-hydrolyzed-roe-cream-in-the-reduction-of-erythema-following-chemical-peel
#11
Vic A Narurkar
Objective:To evaluate a hydrolyzed roe cream in the reduction of facial erythema following a chemical peel treatment. Edema was also assessed. Design:The facial cream was applied to one side of the face of 30 healthy female subjects (average age = 54.9 years, range 33-65 years) immediately following 4 to 15 minutes peel treatment. The opposite side remained untreated. Visia-CR digital photographs were taken at baseline and 8 and 24 hours post facial peel. Objective dermal irritation assessments were done by a blinded investigator, graded on severity of facial erythema and edema on a 5-point scoring scale; 0=none, 1 =slight,2=mild, 3=moderate, 4=severe...
October 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/27842449/transforming-paper-based-assessment-forms-to-a-digital-format-exemplified-by-the-housing-enabler-prototype-app
#12
Tanja Svarre, Tine Bieber Kirkegaard Lunn, Tina Helle
BACKGROUND: The aim of this paper is to provide the reader with an overall impression of the stepwise user-centred design approach including the specific methods used and lessons learned when transforming paper-based assessment forms into a prototype app, taking the Housing Enabler as an example. METHODS: Four design iterations were performed, building on a domain study, workshops, expert evaluation and controlled and realistic usability tests. The user-centred design process involved purposefully selected participants with different Housing Enabler knowledge and housing adaptation experience...
November 15, 2016: Scandinavian Journal of Occupational Therapy
https://www.readbyqxmd.com/read/27834416/accuracy-and-efficiency-of-full-arch-digitalization-and-3d-printing-a-comparison-between-desktop-model-scanners-an-intraoral-scanner-a-cbct-model-scan-and-stereolithographic-3d-printing
#13
Christian Wesemann, Jonas Muallah, James Mah, Axel Bumann
OBJECTIVE: The primary objective of this study was to compare the accuracy and time efficiency of an indirect and direct digitalization workflow with that of a three-dimensional (3D) printer in order to identify the most suitable method for orthodontic use. METHOD AND MATERIALS: A master model was measured with a coordinate measuring instrument. The distances measured were the intercanine width, the intermolar width, and the dental arch length. Sixty-four scans were taken with each of the desktop scanners R900 and R700 (3Shape), the intraoral scanner TRIOS Color Pod (3Shape), and the Promax 3D Mid cone beam computed tomography (CBCT) unit (Planmeca)...
November 10, 2016: Quintessence International
https://www.readbyqxmd.com/read/27829834/the-prosthetic-workflow-in-the-digital-era
#14
Lidia Tordiglione, Michele De Franco, Giovanni Bosetti
The purpose of this retrospective study was to clinically evaluate the benefits of adopting a full digital workflow for the implementation of fixed prosthetic restorations on natural teeth. To evaluate the effectiveness of these protocols, treatment plans were drawn up for 15 patients requiring rehabilitation of one or more natural teeth. All the dental impressions were taken using a Planmeca PlanScan® (Planmeca OY, Helsinki, Finland) intraoral scanner, which provided digital casts on which the restorations were digitally designed using Exocad® (Exocad GmbH, Germany, 2010) software and fabricated by CAM processing on 5-axis milling machines...
2016: International Journal of Dentistry
https://www.readbyqxmd.com/read/27808351/die-cad-cam-gefertigte-totalprothese-mit-dem-%C3%A2-digital-denture-professional-system%C3%A2
#15
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/27785036/usability-of-a-novel-digital-medicine-system-in-adults-with-schizophrenia-treated-with-sensor-embedded-tablets-of-aripiprazole
#16
Timothy Peters-Strickland, Linda Pestreich, Ainslie Hatch, Shashank Rohatagi, Ross A Baker, John P Docherty, Lada Markovtsova, Praveen Raja, Peter J Weiden, David P Walling
OBJECTIVE: Digital medicine system (DMS) is a novel drug-device combination that objectively measures and reports medication ingestion. The DMS consists of medication embedded with an ingestible sensor (digital medicine), a wearable sensor, and software applications. This study evaluated usability of the DMS in adults with schizophrenia rated by both patients and their health care providers (HCPs) during 8-week treatment with prescribed doses of digital aripiprazole. METHODS: Six US sites enrolled outpatients into this Phase IIa, open-label study (NCT02219009)...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27765399/comparison-of-retention-between-maxillary-milled-and-conventional-denture-bases-a-clinical-study
#17
Abdulaziz AlHelal, Hamad S AlRumaih, Mathew T Kattadiyil, Nadim Z Baba, Charles J Goodacre
STATEMENT OF PROBLEM: Clinical studies comparing the retention values of milled denture bases with those of conventionally processed denture bases are lacking. PURPOSE: The purpose of this clinical study was to compare the retention values of conventional heat-polymerized denture bases with those of digitally milled maxillary denture bases. MATERIAL AND METHODS: Twenty individuals with completely edentulous maxillary arches participated in this study...
October 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27759737/ureterorenoscopy-current-technology-and-future-outlook
#18
Joel E Abbott, Roger L Sur
The aim of this paper was to evaluate the current technology and designs of flexible ureterorenoscopes. We will review contemporary fiberoptic and digital ureteroscopes, including a discussion on ureteroscope damage and repair, and lastly present the projected future of flexible ureterorenoscopy. Ureterorenoscopy has evolved dramatically over the past several decades, which has led to landscape reshaping of stone disease treatment and upper tract pathology. Advancements in tip control, miniaturization of scopes, introduction of a digital chip on the tip, disposable devices to augment surgery, surgical experience/familiarity and most recently single use scopes are all independent factors that have increased flexible ureterorenoscopy adoption and success...
December 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/27752178/-computer-aided-design-and-3-dimensional-printing-for-the-production-of-custom-trays-of-maxillary-edentulous-jaws-based-on-3-dimensional-scan-of-primary-impression
#19
H Chen, T Zhao, Y Wang, Y C Sun
OBJECTIVE: To establish a digital method for production of custom trays for edentulous jaws using fused deposition modeling (FDM) based on three-dimensional (3D) scans of primary jaw impressions, and to quantitatively evaluate the accuracy. METHODS: A red modeling compound was used to make a primary impression of a standard maxillary edentulous plaster model. The plaster model data and the primary impression tissue surface data were obtained using a 3D scanner. In the Gemomagic 2012 software, several commands were used, such as interactive drawing curves, partial filling holes, local offset, bodily offset, bodily shell, to imitate clinical procedures of drawing tray boundary, filling undercut, buffer, and generating the tray body...
October 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27740638/volumetric-calculation-of-supraimplant-submergence-profile-after-soft-tissue-conditioning-with-a-provisional-restoration
#20
Julia-Gabriela Wittneben, Urs Brägger, Daniel Buser, Tim Joda
The objective of this study was to digitally analyze the emergence profile changes before and after soft tissue conditioning with fixed-implant provisional restorations. Impressions were taken with individualized posts to build casts for 20 patients. Optical scanning of the modulated mucosa was performed from the model situations in combination with the original healing abutments. Emergence profile extension revealed a mean volume of 41.9 mm(3) for central sites and 25.8 mm(3) for laterals. In addition, linear calculations of supraimplant mucosal profile changes presented a median enlargement of 8...
November 2016: International Journal of Periodontics & Restorative Dentistry
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