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https://www.readbyqxmd.com/read/28937909/the-effect-of-dynacleft%C3%A2-on-cleft-width-in-unilateral-cleft-lip-and-palate-patients
#1
LaQuia Vinson
OBJECTIVE: The specific aim of this retrospective cross-sectional study was to assess the efficacy of DynaCleft(®) as a method of presurgical orthopedics with infants with a unilateral cleft lip and cleft palate who used an oral obturator. STUDY DESIGN: Data was collected from 25 infants all of comparable age diagnosed with a unilateral complete cleft lip and palate. Eight patients used DynaCleft (®) and an obturator (Group Alpha) and seventeen patients only had an obturator (Group Beta)...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28932947/integration-of-digital-dental-casts-in-cone-beam-computed-tomography-scans-a-clinical-validation-study
#2
Frits A Rangel, Thomas J J Maal, Martien J J de Koning, Ewald M Bronkhorst, Stefaan J Bergé, Anne Marie Kuijpers-Jagtman
OBJECTIVES: Images derived from cone beam computed tomography (CBCT) scans lack detailed information on the dentition and interocclusal relationships needed for proper surgical planning and production of surgical splints. To get a proper representation of the dentition, integration of a digital dental model into the CBCT scan is necessary. The aim of this study was to validate a simplified protocol to integrate digital dental models into CBCT scans using only one scan. MATERIALS AND METHODS: Conventional protocol A used one combined upper and lower impression and two CBCT scans...
September 20, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28929419/high-resolution-mr-imaging-for-dental-impressions-a-feasibility-study
#3
Julian Boldt, Kurt Rottner, Marc Schmitter, Andreas Hopfgartner, Peter Jakob, Ernst-Jürgen Richter, Olga Tymofiyeva
OBJECTIVES: Magnetic resonance imaging is an emerging technology in dental medicine. While low-resolution MRI has especially provided means to examine the temporomandibular joint due to its anatomic inaccessibility, it was the goal of this study to assess whether high-resolution MRI is capable of delivering a dataset sufficiently precise enough to serve as digital impression of human teeth. MATERIALS AND METHODS: An informed and consenting patient in need of dental restoration with fixed partial dentures was chosen as subject...
September 19, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28927924/digital-immediate-denture-a-clinical-report
#4
Jing-Huan Fang, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
Fabricating an immediate complete denture in the conventional manner may be complicated and difficult. The purpose of this article was to describe a fully digital workflow used to fabricate an immediate complete denture before removing the teeth and without the use of conventional impressions or stone casts. The digital data for the workflow were acquired using an intraoral scanner and were then used to design the denture base and teeth after deleting any remaining tooth images from the virtual 3-dimensional image of the jaw...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927923/digital-versus-conventional-implant-impressions-for-partially-edentulous-arches-an-evaluation-of-accuracy
#5
Amin Marghalani, Hans-Peter Weber, Matthew Finkelman, Yukio Kudara, Khaled El Rafie, Panos Papaspyridakos
STATEMENT OF PROBLEM: To the authors' knowledge, while accuracy outcomes of the TRIOS scanner have been compared with conventional impressions, no available data are available regarding the accuracy of digital impressions with the Omnicam and True Definition scanners versus conventional impressions for partially edentulous arches. PURPOSE: The purpose of this in vitro study was to compare the accuracy of digital implant impressions using 2 different intraoral scanners (IOSs) with that of conventional impressions for partially edentulous arches...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927920/the-combination-prosthesis-a-digitally-designed-retrievable-cement-and-screw-retained-implant-supported-prosthesis
#6
Periklis Proussaefs, Abdulaziz AlHelal
The technique described offers a digital workflow for designing and fabricating a combination cement- and screw-retained implant-supported prosthesis. After making the definitive impression and definitive stone cast, the definitive combination prosthesis is digitally designed. Custom-milled titanium abutments and cementable superstructure prosthesis are designed and milled by having occlusal access channels of the prosthesis correspond to the occlusal access channels of the custom abutments. After intraorally confirming the esthetics, occlusion, and fit, the prosthesis is cemented intraorally and removed as a screw-retained prosthesis...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927393/the-complete-digital-workflow-in-fixed-prosthodontics-a-systematic-review
#7
Tim Joda, Fernando Zarone, Marco Ferrari
BACKGROUND: The continuous development in dental processing ensures new opportunities in the field of fixed prosthodontics in a complete virtual environment without any physical model situations. The aim was to compare fully digitalized workflows to conventional and/or mixed analog-digital workflows for the treatment with tooth-borne or implant-supported fixed reconstructions. METHODS: A PICO strategy was executed using an electronic (MEDLINE, EMBASE, Google Scholar) plus manual search up to 2016-09-16 focusing on RCTs investigating complete digital workflows in fixed prosthodontics with regard to economics or esthetics or patient-centered outcomes with or without follow-up or survival/success rate analysis as well as complication assessment of at least 1 year under function...
September 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28924826/volumetric-and-linear-changes-at-dental-implants-following-grafting-with-volume-stable-three-dimensional-collagen-matrices-or-autogenous-connective-tissue-grafts-6-month-data
#8
Nadja Naenni, Stefan P Bienz, Goran I Benic, Ronald E Jung, Christoph H F Hämmerle, Daniel S Thoma
OBJECTIVES: The objective of this study was to test whether or not soft tissue augmentation with a volume-stable collagen matrix (VCMX) leads to similar volume gain around dental implants compared to autogenous subepithelial connective tissue graft (SCTG). MATERIALS AND METHODS: In 12 adult beagle dogs, immediate implants were placed with simultaneous guided bone regeneration. After 25-45 weeks, soft tissue augmentation was randomly performed using VCMX, SCTG, or a sham-operated control...
September 18, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28888413/digital-intraoral-impression-technique-for-edentulous-jaws
#9
Jing-Huan Fang, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
Few studies have evaluated direct digital impressions of edentulous jaws using intraoral scanners because it is difficult to scan edentulous sites that are smooth and devoid of features. A scanning technique is introduced for making direct digital impressions of edentulous jaws with intraoral scanners in patients with a broad palate.
September 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28886768/dental-impression-materials-and-techniques
#10
REVIEW
Amit Punj, Despoina Bompolaki, Jorge Garaicoa
Dental impression making is the process of creating a negative form of the teeth and oral tissues, into which gypsum or other die materials can be processed to create working analogues. Contemporary dentistry generates new information every year and digital dentistry is becoming established and influential. Although dentists should stay abreast of new technologies, some of the conventional materials and time-tested techniques remain widely used. It is important to review the impression-making process to ensure that practitioners have up-to-date information about how to safely and effectively capture the exact form of the oral tissues to provide optimal patient management...
October 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/28881181/digital-workflow-for-computer-guided-implant-surgery-in-edentulous-patients-a-case-report
#11
Ji-Hyeon Oh, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
PURPOSE: The purpose of this article was to describe a fully digital workflow used to perform computer-guided flapless implant placement in an edentulous patient without the use of conventional impressions, models, or a radiographic guide. MATERIALS AND METHODS: Digital data for the workflow were acquired using an intraoral scanner and cone-beam computed tomography (CBCT). The image fusion of the intraoral scan data and CBCT data was performed by matching resin markers placed in the patient's mouth...
August 12, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28879329/creating-protective-appliances-for-preventing-dental-injury-during-endotracheal-intubation-using-intraoral-scanning-and-3d-printing-a-technical-note
#12
Jin-Hyung Cho, Wonse Park, Kyeong-Mee Park, Seo-Yul Kim, Kee-Deog Kim
Digital dentistry has influenced many dental procedures, such as three-dimensional (3D) diagnosis and treatment planning, surgical splints, and prosthetic treatments. Patient-specific protective appliances (PSPAs) prevent dental injury during endotracheal intubation. However, the required laboratory work takes time, and there is the possibility of tooth extraction while obtaining the dental impression. In this technical report, we utilized new digital technology for creating PSPAs, using direct intraoral scanners and 3D printers for dental cast fabrication...
March 2017: J Dent Anesth Pain Med
https://www.readbyqxmd.com/read/28874991/ceramic-molar-crown-reproducibility-by-digital-workflow-manufacturing-an-in-vitro-study
#13
Ii-Do Jeong, Woong-Chul Kim, Jinyoung Park, Chong-Myeong Kim, Ji-Hwan Kim
PURPOSE: This in vitro study aimed to analyze and compare the reproducibility of zirconia and lithium disilicate crowns manufactured by digital workflow. MATERIALS AND METHODS: A typodont model with a prepped upper first molar was set in a phantom head, and a digital impression was obtained with a video intraoral scanner (CEREC Omnicam; Sirona GmbH), from which a single crown was designed and manufactured with CAD/CAM into a zirconia crown and lithium disilicate crown (n=12)...
August 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28874989/evaluation-of-marginal-and-internal-gaps-in-single-and-three-unit-metal-frameworks-made-by-micro-stereolithography
#14
Dong-Yeon Kim, Ha-Na Lee, Ji-Hwan Kim, Hae-Young Kim, Woong-Chul Kim
PURPOSE: The purpose of this study is to compare single and three-unit metal frameworks that are produced by micro-stereolithography. MATERIALS AND METHODS: Silicone impressions of a selected molar and a premolar were used to make master abutments that were scanned into a stereolithography file. The file was processed with computer aided design software to create single and three-unit designs from which resin frameworks were created using micro-stereolithography...
August 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28863923/accuracy-of-3-dimensional-curvilinear-measurements-on-digital-models-with-intraoral-scanners
#15
Spencer Mack, Tammy Bonilla, Jeryl D English, Benjamin Cozad, Sercan Akyalcin
INTRODUCTION: Our objectives were to evaluate and compare the digital dental models generated from 2 commercial intraoral scanners with manual measurements when performing 3-dimensional surface measurements along a curved line (curvilinear). METHODS: Dry mandibles (n = 61) with intact dentition were used. The mandibles were digitized using 2 chair-side intraoral scanners: Cadent iTero (Align Technology, San Jose, Calif) and Lythos Digital Impression system (Ormco, Orange, Calif)...
September 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28861021/reading-traits-for-dynamically-presented-texts-comparison-of-the-optimum-reading-rates-of-dynamic-text-presentation-and-the-reading-rates-of-static-text-presentation
#16
Miki Uetsuki, Junji Watanabe, Hideyuki Ando, Kazushi Maruya
With the growth in digital display technologies, dynamic text presentation is used widely in every day life, such as in electric advertisements and tickers on TV programs. Unlike static text reading, little is known about the basic characteristics underlying reading dynamically presented texts. Two experiments were performed to investigate this. Experiment 1 examined the optimum rate of dynamic text presentation in terms of a readability and favorability. This experiment demonstrated that, when the rate of text presentation was changed, there was an optimum presentation rate (around 6 letters/s in our condition) regardless of difficulty level...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28852744/antagonist-wear-by-polished-zirconia-crowns
#17
Oliver Hartkamp, Ulrich Lohbauer, Sven Reich
AIM: The aim of this in vivo study was to measure antagonist wear caused by polished monolithic posterior zirconia crowns over a 24-month period using the intraoral digital impression (IDI) technique. MATERIALS AND METHODS: Thirteen zirconia crowns were placed in nine patients. The crowns and adjacent teeth were captured using an intraoral scanner (Lava C.O.S.). The corresponding antagonist teeth and the respective neighboring teeth were also scanned. Scanning was performed immediately after the restoration (baseline) as well as 12 and 24 months after crown placement...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28851679/the-use-of-facebook-in-recruiting-participants-for-health-research-purposes-a-systematic-review
#18
Christopher Whitaker, Sharon Stevelink, Nicola Fear
BACKGROUND: Social media is a popular online tool that allows users to communicate and exchange information. It allows digital content such as pictures, videos and websites to be shared, discussed, republished and endorsed by its users, their friends and businesses. Adverts can be posted and promoted to specific target audiences by demographics such as region, age or gender. Recruiting for health research is complex with strict requirement criteria imposed on the participants. Traditional research recruitment relies on flyers, newspaper adverts, radio and television broadcasts, letters, emails, website listings, and word of mouth...
August 28, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28833920/marginal-fit-of-lithium-disilicate-crowns-fabricated-using-conventional-and-digital-methodology-a-three-dimensional-analysis
#19
Nezrine Z Mostafa, N Dorin Ruse, Nancy L Ford, Ricardo M Carvalho, Chris C L Wyatt
PURPOSE: To compare the marginal fit of lithium disilicate (LD) crowns fabricated with digital impression and manufacturing (DD), digital impression and traditional pressed manufacturing (DP), and traditional impression and manufacturing (TP). MATERIALS AND METHODS: Tooth #15 was prepared for all-ceramic crowns on an ivorine typodont. There were 45 LD crowns fabricated using three techniques: DD, DP, and TP. Microcomputed tomography (micro-CT) was used to assess the 2D and 3D marginal fit of crowns in all three groups...
August 21, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28828016/effect-of-polyvinyl-siloxane-viscosity-on-accuracy-of-dental-implant-impressions
#20
Ahmad Ghahremanloo, Mahdieh Seifi, Jalil Ghanbarzade, Seyyed Mohammad Abrisham, Rashid Abdolah Javan
OBJECTIVES: The aim of this study was to compare the accuracy of dental implant impressions obtained by a combination of different impression techniques and viscosities of polyvinyl siloxane (PVS). MATERIALS AND METHODS: Four parallel fixtures were placed between mental foramina in a master model of lower dental arch. Three different viscosities (putty/light body, medium body/light body, and monophase: heavy body) and direct and indirect techniques (six groups) were used, and seven impressions were obtained from each group (n=42)...
January 2017: Journal of Dentistry of Tehran University of Medical Sciences
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