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https://www.readbyqxmd.com/read/28636642/in-vivo-evaluation-of-inter-operator-reproducibility-of-digital-dental-and-conventional-impression-techniques
#1
Emi Kamimura, Shinpei Tanaka, Masayuki Takaba, Keita Tachi, Kazuyoshi Baba
PURPOSE: The aim of this study was to evaluate and compare the inter-operator reproducibility of three-dimensional (3D) images of teeth captured by a digital impression technique to a conventional impression technique in vivo. MATERIALS AND METHODS: Twelve participants with complete natural dentition were included in this study. A digital impression of the mandibular molars of these participants was made by two operators with different levels of clinical experience, 3 or 16 years, using an intra-oral scanner (Lava COS, 3M ESPE)...
2017: PloS One
https://www.readbyqxmd.com/read/28635585/the-meaning-and-experience-of-bereavement-support-a-qualitative-interview-study-of-bereaved-family-caregivers
#2
Emma Kirby, Katherine Kenny, Alex Broom, John MacArtney, Phillip Good
OBJECTIVE: Experiences of bereavement can be stressful and are frequently complicated by emotional, familial, and financial issues. Some-though not all-caregivers may benefit from bereavement support. While considered standard within palliative care services in Australia, bereavement support is not widely utilized by family caregivers. There is little research focused on the forms of bereavement support desired or required by family caregivers, how such care is viewed, and/or how bereavement support is experienced...
June 21, 2017: Palliative & Supportive Care
https://www.readbyqxmd.com/read/28630958/a-questionnaire-on-the-use-of-digital-denture-impressions-in-a-preclinical-setting
#3
Kerstin Wegner, Karin Michel, Paul Henryk Seelbach, Bernd Wöstmann
Since February 2010, intraoral scanning (Lava COS system, 3M ESPE, Seefeld, Germany) has been integrated into the preclinical curriculum at the Department of Prosthodontics of the Justus Liebig University. All students were given a lecture and were trained using a guided scan exercise. After preparing three teeth (mandibular first premolars and mandibular first molar in the 4th quadrant) for cast crowns, the students were asked to scan the maxillary and mandibular teeth. Their acceptance of the new module, "Scanning," was analyzed with the use of a questionnaire (n = 108)...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28630955/chairside-systems-a-current-review
#4
Markus Zaruba, Albert Mehl
Since Cerec (Chairside Economical Restoration of Esthetic Ceramics) was introduced as the first dental chairside computer-aided design/computer-aided manufacturing (CAD/CAM) system in the mid-1980s, this technology has enjoyed growing popularity, particularly in the recent past. There has been a considerable increase in the number of available chairside systems in only the last few years. One of the main reasons for this is that intraoral scanners have become increasingly better, smaller, and faster, while the design software has become more and more user-friendly...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28628550/visual-and-motor-recovery-after-cognitive-therapeutic-exercises-in-cortical-blindness-a-case-study
#5
Daniele De Patre, Ann Van de Winckel, Franca Panté, Carla Rizzello, Marina Zernitz, Mariam Mansour, Lara Zordan, Thomas A Zeffiro, Erin E OʼConnor, Teresa Bisson, Andrea Lupi, Carlo Perfetti
BACKGROUND AND PURPOSE: Spontaneous visual recovery is rare after cortical blindness. While visual rehabilitation may improve performance, no visual therapy has been widely adopted, as clinical outcomes are variable and rarely translate into improvements in activities of daily living (ADLs). We explored the potential value of a novel rehabilitation approach "cognitive therapeutic exercises" for cortical blindness. CASE DESCRIPTION: The subject of this case study was 48-year-old woman with cortical blindness and tetraplegia after cardiac arrest...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28625663/development-of-complete-dentures-based-on-digital-intraoral-impressions-case-report
#6
Jing-Huan Fang, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
PATIENT: A 60-year-old man presented for refabrication of his maxillary complete denture. In this case, a digital process was chosen to replace the ill-fitted complete maxillary denture. A specialized scan retractor was used to retract the mobile tissues of the lips, cheeks and vestibule while taking a digital impression. The interocclusal record obtained in the patient's mouth was scanned in order to digitally register the occlusal vertical dimension. The denture base and teeth were designed on virtual models that were mounted at the occlusal vertical dimension, and were made using CAD/CAM technology...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28625643/sequential-liquid-biopsies-reveal-dynamic-alterations-of-egfr-driver-mutations-and-indicate-egfr-amplification-as-a-new-mechanism-of-resistance-to-osimertinib-in-nsclc
#7
Franciele H Knebel, Fabiana Bettoni, Andrea K Shimada, Manoel Cruz, João Victor Alessi, Marcelo V Negrão, Luiz Fernando L Reis, Artur Katz, Anamaria A Camargo
Osimertinib is an EGFR-T790M-specific TKI, which has demonstrated impressive response rates in NSCLC, after failure to first-line anti-EGFR TKIs. However, acquired resistance to osimertinib is also observed and the molecular mechanisms of resistance are not yet fully understood. Monitoring and managing NSCLC patients who progressed on osimertinib is, therefore, emerging as an important clinical challenge. Sequential liquid biopsies were used to monitor a patient with EGFR-exon19del positive NSCLC, who received erlotinib and progressed through the acquisition of the EGFR-T790M mutation...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28618432/accuracy-of-digital-vs-conventional-implant-impression-approach-a-three-dimensional-comparative-in-vitro-analysis
#8
Kinga Basaki, Hasan Alkumru, Grace De Souza, Yoav Finer
PURPOSE: To assess the three-dimensional (3D) accuracy and clinical acceptability of implant definitive casts fabricated using a digital impression approach and to compare the results with those of a conventional impression method in a partially edentulous condition. MATERIALS AND METHODS: A mandibular reference model was fabricated with implants in the first premolar and molar positions to simulate a patient with bilateral posterior edentulism. Ten implant-level impressions per method were made using either an intraoral scanner with scanning abutments for the digital approach or an open-tray technique and polyvinylsiloxane material for the conventional approach...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28613356/outpatient-wide-field-digital-imaging-of-infants-with-retinopathy-of-prematurity
#9
Robert W Arnold, Robin L Grendahl, R Kevin Winkle, Jack Jacob
Eight infants were closely monitored for retinopathy of prematurity (ROP) while in the neonatal intensive care unit (NICU); two required laser therapy. After discharge from the NICU, they had outpatient examination with dilated, scleral depressed ROP staging, and each had digital widefield retinal imaging (Optos, Dunfermline, United Kingdom) without lid speculum, or with lid speculum if not cooperative. Images were shared remotely using ROP-Check software (Glacier Medical Software, Anchorage, AK), from which ophthalmologists made clinical impressions...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28586232/does-6-hours-of-contact-with-alginate-impression-material-affect-dental-cast-properties
#10
Amna Adam Ibrahim, Mohammed Nasser Alhajj, Nadia Khalifa, Magdi Wadie Gilada
Alginate impression (irreversible hydrocolloid) material is commonly used in dental practice because it is easy to mix, low in cost, and well tolerated by patients. The material is not dimensionally stable, however; thus, it is necessary to pour the impression immediately after the molding is accomplished, or within 60 minutes if the impression is kept in 100% humidity. Excessive contact of the alginate impression with the cast model over time may affect the model's properties. In this study, the authors tested the effect of contact time between an alginate impression and type III dental stone on cast model properties...
June 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28584479/gender-determination-by-odontometric-method
#11
Litha, H C Girish, Sanjay Murgod, J K Savita
CONTEXT: Gender determination is central in establishing personal identification from human skeletal remains. The study was conducted to find out the accuracy with which gender can be determined by odontometric methods. AIMS: To investigate the mesiodistal (MD) and buccolingual (BL) dimensions of all the teeth of permanent dentition to find new parameters to differentiate between male and female teeth and to assess whether each type of linear measurement can be used independently in odontometric sex differentiation...
January 2017: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/28578984/comparison-of-dimensional-accuracy-of-conventionally-and-digitally-manufactured-intracoronal-restorations
#12
Reza Eftekhar Ashtiani, Leila Nasiri Khanlar, Minoo Mahshid, Alireza Moshaverinia
STATEMENT OF PROBLEM: Advances have been made in digital dentistry for the fabrication of dental prostheses, but evidence regarding the efficacy of digital techniques for the fabrication of intracoronal restorations is lacking. PURPOSE: The purpose of this in vitro study was to compare the dimensional accuracy of intracoronal restorations fabricated with digital and conventional techniques. MATERIAL AND METHODS: A sound mandibular molar tooth received a standard onlay preparation, and onlays were fabricated with 1 of 3 fabrication techniques...
June 2, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28571273/an-in-vivo-comparison-of-vertical-and-horizontal-distance-between-incisive-papilla-and-incisal-edge-of-maxillary-central-incisors-in-dentates-with-different-arch-forms
#13
Nivedita Pachore, Vikas Bhakhar, Jayanti Patel, Avani Patel, Kaushik Adeshra
INTRODUCTION: The incisive papilla is one of the most stable landmarks for assessing the original position of certain key teeth. To place anterior artificial teeth back in its original position such as in denture construction and full mouth rehabilitation cases vertical and horizontal distance from incisive papilla in different arch forms, imparts a significant role. The average distance will be helpful for arrangement of teeth in its original position which not only provides a pleasing appearance and normal function but also will save the dentists' chair side effort...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28569452/zirconia-reinforced-lithium-silicate-ceramic-a-2-year-follow-up-of-a-clinical-experience-with-anterior-crowns
#14
Guilherme de Siqueira Ferreira Anzaloni Saavedra, Flávia Pires Rodrigues, Marco Antonio Bottino
The aim of this manuscript is to describe 2-year follow-up of a clinical experience with a zirconia-reinforced lithium silicate ceramic for an anterior rehabilitation with single metal-free crowns. The maxillary-central incisor teeth crowns were made by zirconium-reinforced lithium silicate and covered with porcelain were obtained with a digital impression with the intra-oral scanner of the CEREC system as a basis for virtual design, as well as a laminate for the left lateral maxillary incisor, based on a "double scanning" technique...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28569447/marginal-accuracy-and-internal-fit-of-dental-copings-fabricated-by-modern-additive-and-subtractive-digital-technologies
#15
Neha Nelson, Jyothi K S, Kiran Sunny
The margins of copings for crowns and retainers of fixed partial dentures affect the progress of microleakage and dental caries. Failures occur due to altered fit which is also influenced by the method of fabrication. An in-vitro study was conducted to determine among the cast base metal, copy milled zirconia, computer aided designing computer aided machining/manufacturing zirconia and direct metal laser sintered copings which showed best marginal accuracy and internal fit. Forty extracted maxillary premolars were mounted on an acrylic model and reduced occlusally using a milling machine up to a final tooth height of 4 mm from the cementoenamel junction...
March 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28567530/immediate-definitive-individualized-abutments-reduce-peri-implant-bone-loss-a-randomized-controlled-split-mouth-study-on-16-patients
#16
M Erhan Çömlekoğlu, Nejat Nizam, Mine Dündar Çömlekoğlu
OBJECTIVES: This paper aims to observe peri-implant time-related vertical bone level and soft tissue changes with immediate, non-detached glass-ceramic (lithium-disilicate) individualized abutments and dis-/reconnections. MATERIALS AND METHODS: Sixteen split-mouth patients received provisionalized immediate definitive individualized abutments (test T) versus dis-/reconnected individualized abutments (control C). In group T, digital impressions were made by using titanium bases (Conelog, Camlog), and individualized abutments (E...
May 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28555157/accuracy-evaluation-of-a-stereolithographic-surgical-template-for-dental-implant-insertion-using-3d-superimposition-protocol
#17
Corina Marilena Cristache, Silviu Gurbanescu
THE AIM: of this study was to evaluate the accuracy of a stereolithographic template, with sleeve structure incorporated into the design, for computer-guided dental implant insertion in partially edentulous patients. MATERIALS AND METHODS: Sixty-five implants were placed in twenty-five consecutive patients with a stereolithographic surgical template. After surgery, digital impression was taken and 3D inaccuracy of implants position at entry point, apex, and angle deviation was measured using an inspection tool software...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28536549/self-in-art-self-as-art-museum-selfies-as-identity-work
#18
Robert Kozinets, Ulrike Gretzel, Anja Dinhopl
Selfies, digital images characterized by the desire to frame the self in a picture taken to be shared with an online audience, are important reflections of the contemporary self. Much extant psychological research on selfies has taken a pathologizing view of the phenomenon, focusing on its relationship to narcissism. Our investigation seeks to contribute to a holistic, contextualized and cultural perspective. We focus on the context of museums, places where art, history, education, and culture merge into the selfie taking behaviors of patrons...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28527193/comparison-of-digital-intraoral-scanners-by-single-image-capture-system-and-full-color-movie-system
#19
Meguru Yamamoto, Yu Kataoka, Atsufumi Manabe
BACKGROUND: The use of dental computer-aided design/computer-aided manufacturing (CAD/CAM) restoration is rapidly increasing. OBJECTIVE: This study was performed to evaluate the marginal and internal cement thickness and the adhesive gap of internal cavities comprising CAD/CAM materials using two digital impression acquisition methods and micro-computed tomography. METHODS: Images obtained by a single-image acquisition system (Bluecam Ver...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28523309/immunohistochemical-expression-of-ki-67-and-p53-along-with-their-digitalized-evaluation-in-the-discriminatory-analysis-of-reactive-atypia-and-dysplastic-lesions-in-gastrointestinal-biopsies-of-the-stomach
#20
Dan Ştefan Sâmpălean, Mihai Turcu, Annamária Fetykó, Jenő Róbert Bartha, Simona Maria BăŢagă, Sabin Gligore Turdean
The differential diagnosis between reactive atypia and non-invasive neoplasia (or dysplasia) can be challenging in the case of small conventional forceps biopsy specimens of the stomach. Despite the existence of several classifications for neoplastic epithelial lesions of the stomach, there are few auxiliary tools for aiding in this decision besides standard stains. We studied the utility of Ki-67 and p53 immunohistochemistry in this setting and their clinico-pathological correlations, based on a set of 99 cases with cytological or architectural atypia reviewed by three pathologists...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
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