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Accuracy And Precision Of Two Intraoral Scanners In Oral Implantology In Vitro Analysis Of The Lower Jaw Model With 4 Scan Bodies
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Book Synopsis Accuracy and Precision of Two Intraoral Scanners in Oral Implantology- in Vitro Analysis of the Lower Jaw Model with 4 Scan Bodies by : Jelena Dujoviu0107
Download or read book Accuracy and Precision of Two Intraoral Scanners in Oral Implantology- in Vitro Analysis of the Lower Jaw Model with 4 Scan Bodies written by Jelena Dujoviu0107 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Limited informations are available about the accuracy and precision of intraoral scanners when they are applied in implantology, especially by edentulous jaws. Compare the accuracy and precision of two intraoral scanner and determine the impact of dentist's skills on scanning results were the golas of stady. Stone model with four implant analogues (Straumannu00ae) and polyether-ether-ketone (PEEK) scan bodies was digitized with: industrial scanner (Atos Core 135 - used as a reference) and with two intraoral scanners (Triosu00ae; Omnicamu00ae).Four dentists scanned stone model in accordance with recommended scan protocol. Intraoral scans were superimposed on the reference model, to evaluate accuracy. All scanns superimposed on each other within groups, to evaluate precision.Triosu00ae has a higher degree of precision and accuracy compared to Omnicamu00ae.The study indicate that the dentist's skill has important impact on the measurement results.
Download or read book Gerodontology written by Ian E. Barnes and published by Wright Publishing Company. This book was released on 1994 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparative in Vitro Study of the Accuracy of Impression Techniques for Dental Implants- Direct Technique with an Elastomeric Impression Material Versus Intraoral Scanner by : Cristina Rech
Download or read book Comparative in Vitro Study of the Accuracy of Impression Techniques for Dental Implants- Direct Technique with an Elastomeric Impression Material Versus Intraoral Scanner written by Cristina Rech and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and fabrication of implant-supported prosthetic structures requires the faithful reproduction of anatomical details and the correct positioning of the implants in the jaw. To do this, it is essential to take impressions using silicones or polyethers that will provide a working model that is as precise and exact as possible and will lead to a prosthetic structure with adequate passive fit.In recent years, the introduction of digital workflow has brought about a revolution in the field of dentistry, particularly in relation to the fabrication of prosthetic structures, whether tooth- or implant-supported. Digital techniques have allowed greater management of technical errors in metal-casting, making it easier to achieve a correct prosthetic fit. This study aimed to compare two impression techniques for analogue implants: the direct (or pick-up) technique with the elastomeric material polyether, and a digital scanner (True Definitionu00ae, 3Mu00ae ESPE: USA), in order to determine which is the more accurate technique. Twenty impressions were taken of a master model with each technique. Were measured the distances between contiguous analogues, intermittently positioned analogues and the most distal implants. Only significant differences were found between both techniques and the master model for the distance between distal analogues.After analizing the results of this study, for rehabilitations involving more than four implants, neither technique can be considered accurate although error falls within the tolerance limits established in the literature (30-150u00b5m).
Book Synopsis Loading Protocols in Implant Dentistry by : Daniel Wismeijer
Download or read book Loading Protocols in Implant Dentistry written by Daniel Wismeijer and published by Quintessenz Verlag. This book was released on 2019-09-03 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implant dentistry has become a standard option for the rehabilitation of fully and partially edentulous patients. With the ever-increasing number of dentists involved in implant dentistry, it is essential to ensure that their treatment methods follow the highest standard. The ITI Treatment Guide series, a compendium of evidence-based implant-therapy techniques in daily practice, is written by renowned clinicians and provides a comprehensive overview of various therapeutic options. Using an illustrated step-by-step approach, the ITI Treatment Guide shows practitioners how to manage different clinical situations, with the emphasis on sound diagnostics, evidence-based treatment concepts, and predictable treatment outcomes. The second volume of the ITI Treatment Guide is devoted to the restoration of partially dentate patients. Central to this volume of the ITI Treatment Guide are loading protocols available to the clinician and the patient and how they relate to various treatment indications, including both single and multiple missing teeth in the posterior and anterior regions of the mouth. Among potential topics for upcoming volumes are implant placement in extraction sockets, loading protocols in edentulous patients, implant therapy in the esthetic zone in extended edentulous spaces, and many more.
Book Synopsis Effect of Intraoral Scanner, Printer, and Digital Analog System on the Accuracy of 3D Printed Models by :
Download or read book Effect of Intraoral Scanner, Printer, and Digital Analog System on the Accuracy of 3D Printed Models written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: BACKGROUND AND AIMThe clinical fit of an implant prosthesis at the implant-abutment junction is directly dependent on the accuracy of impression and cast. Digital workflow for producing implant-supported restorations involves the usage of intraoral scanners (IOS). From IOS data 3D printed master model is often fabricated using the selected type of digital analogs. There is a lack of data regarding the effects of IOS, 3D printer, and digital analog type effect on the local and global accuracy of digital analog positions in 3D printed master model. Moreover, errors arising in each step/stage should be identified. The aim of the study was to estimate the effect of IOS, two 3D printers and 2 digital analog systems on 3D positions of the digital analogs comparing reference, IOS and 3D printed model data sets. The null hypothesis was that there are no statistically significant differences between the data sets.MATERIALS AND METHODSTwo Straumann BLT 4.1 mm RC implants were inserted in the reference model (REF) left quadrant, in the location of second premolar and second molar with 5u00b0 angulation. Three calibration spheres of 5 mm in diameter (u00b11 u00b5m) where placed on the left quadrant at the model base. Scan bodies (3Shape) were attached to the implants and model was scanned with Nikon Altera 10.7.6. industrial scanner (REF-stl). REF model was scanned 10 times with E3 (3Shape) scanner for validation. Ten digital impressions were taken with 3Shape Trios3 intraoral scanner. The closes to the overall average or IOS impressions STL file (IOS-stl) was selected for 3D printing. Asiga MAX and Next Dent 5100 3D printers, ELOS Print Model Analog and NT-trading DIM-ANALOG were used to produce 4 groups (n=10 each) of 3D printed implant models. Later they were scanned with a validated E3 scanner (3D-print-stl). Distance, angulation, rotation, vertical shift measurements were performed using Geomagic Control X 2018 software.CONCLUSIONSAsiga MAX 3D printer performed more accurately than NextDent 5100. ELOS Print Model Analog showed most accurate results both locally and globally than NT trading. Intraoral scanning had significant influence in overall error propagation. Further studies are needed to evaluate other factors.
Book Synopsis Digital Intraoral Scanners Vs Traditional Impressions- Fitting Accuracy of Screwed Mesostructures by : Carlesi Gian Luca
Download or read book Digital Intraoral Scanners Vs Traditional Impressions- Fitting Accuracy of Screwed Mesostructures written by Carlesi Gian Luca and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: TitleDigital intraoral scanners vs traditional impressions: Fitting accuracy of screwed mesostructuresBackgroundPassive fit and marginal precision of prosthetic structures on osteointegrated implants are a requirement to minimize tensions and to avoid loss of marginal bone and finally lack of osteointegration. The impression process is a primary step to obtain sufficient accuracy.We use daily intraoral scanners for impressions to made implant restorations from several years and we appreciate the clinical outcomes for passive fitting (cemented sovrastructures) and precision of screwed ones.AimThe aim of this job is to investigate the marginal accuracy of custom CoCr milled mesostructures on implants acquiring impressions by intraoral digital scanners and compare them to ones obtained bytraditional impressions systems and to evaluate if the misfit is within the optimal measure of 25-50u00b5m.Material and methodsTwo pair of implants were rigidly fixed in maxilla resin models. The first two implant were internal hexagonal flat connection implants made by Winsix implant system ( Biosaf In srl). The second two were internal octagonal conical connection implants made by Geass (Geass srl). Three impressions were took of each model. The first one was a traditional impression made by polyether material with the single impression technique. The other two impression was acquired using CS3500 Carestream Intraoral Scanner and Trios3 intraoral scanner. The digital impressions were made following factory recommendations for implant cases workflow.Milled CoCr screwed mesostructures were commissioned on the three impressions of each model.The aim was to analyze the misfit of the three mesostructures obtained using Sheffield test. The misfit was evaluated by a radiograph taken perpendicularly to the long axis of the implants. ImageJu00ae software was used to digitally process the radiographic images and perform the measurements. ResultsWe eliminate, using an artificial model some intraoral variables as blood, saliva, patient movements but we simulate the natural architecture of mouth maintaining crestal anatomy, gum, implant distance. We investigate the misfit radiographically performing the Scheffield test: in this way we screwed firmly only one screw of the mesostructure and we observe the matching of the other implant-structure connection.The bigger misfit was appreciate on the two mesostructures obtained by traditional impressions, one of them has failed to comply with the established gap limit of 50 u00b5m.Very good fitting, within the limit of 50 u00b5m was found on three mesostructures: The one made by impression with Carestream intraoral scanner CS3500 on winsix implantsand the two performed by Trios3 intraoral scanner 3Shapedental on Winsix implants and Geass Way implantsThe fitting accuracy of the last mesostructure made by impression performed on Geass Way implants with CS3500 scanner looks a middle way.ConclusionsThe misfit of all the mesostructures obtained by digital intraoral scanners seems to be in the safety range, avoiding structural tensions involving implant after screwing.This study confirm the fitting accuracy of milled mesostructures obtainable by digital intraoral impressions.We expected a more homogeneous results in the group of mesostructures obtained by digital impressions, poor number of mesostructures investigated may be the reason of the discrepancy.More data are indispensable to complete the results obtained and to investigate the real accuracy obtainable .
Book Synopsis The Glossary of Prosthodontic Terms by :
Download or read book The Glossary of Prosthodontic Terms written by and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accuracy of Digital Models Acquired from Two Different Intraoral Scanners by : Jessie Marie Kierl
Download or read book Accuracy of Digital Models Acquired from Two Different Intraoral Scanners written by Jessie Marie Kierl and published by . This book was released on 2018 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Varying Accuracy of Superimposition of CBCT Images with Chairside Scanning Data and Labside Scanning Data by :
Download or read book Varying Accuracy of Superimposition of CBCT Images with Chairside Scanning Data and Labside Scanning Data written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Digital three-dimensional planning of dental implant treatment has proven its benefits to the implantation procedure. Hereby, 3D datasets of CBCT scans are able to be superimposed to optically obtained data of the oral situation in order to reproduce and consider the soft tissue situation during the planning process. The quality of this procedure is depending to the used scan datasets and their immanent failure. 416Aim: This study aimed to compare the accuracy of the superimposition of CBCT images with digital intraoral scanning datasets on the one hand and the accuracy of the superimposition with digitally scanned gypsum models on the other hand. Subsequently, a recommendation for the digital workflow should be given. 270Materials and methods: A highly precise polymethacrylate model of an upper jaw with full dentition was scanned with a CBCT unit (3D eXam, Kavo dental GmbH, Biberach, Germany) for the digital superimposition with digital intraoral scanning data and lab-side scanning data. In this context, the same polymethacrylate model was also scanned with a TRIOS (3Shape A/S, Kopenhagen, Denmark) digital intraoral scanner first and with the D640 model scanner (lab-side model scanning unit, 3Shape A/S) in a second step. Each of these two procedures was performed ten times to ensure statistically relevant results. Afterwards, all datasets were converted into STL-files. Files obtained with TRIOS were assigned to group 1 and files obtained with D640 model scanner to group 2. Each scan of both groups was superimposed to the CBCT dataset throughout two different ways of local fitting (local-best-fit). Firstly, every scan was superimposed to the CBCT image using the virtual structures of the teeth. Secondly, the hard palate was used to define the relation. Three-dimensional deviations of every image pair were calculated for every locus over the teeth. Statistical analysis was done via IBMu00ae SPSS Statistics.Results: This study clearly showed that the scanning procedure which is used to reproduce the oral hard and soft tissue situation leads to different deviations in the superimposition with a CBCT dataset. Using a digital intraoral scanning unit, mean deviation was limited to 0.075mm. The lab-side scanning revealed a mean deviation of 0.129mm. By comparing these two ways of local-best-fit strategies, the relation over the teeth showed a mean deviation of 0.039 mm and the relation over the hard palate revealed a mean deviation of 0.165mm. The combination of these two examined parameters lead to the lowest mean deviation for the TRIOS scan datasets superimposed to the CBCT scan by using the local-best-fit over the teeth with 0.022mm and the highest for the lab-side scan superimposed by the relation of the hard palate with 0.203mm. All differences between groups and local-best-fit relations and combinations were statistically significant.Conclusion and clinical implications: The present data implicate a huge impact of the scanning method of the oral hard and soft tissue on the accuracy of digital superimposition to corresponding CBCT images. As immanent failure has to be reduced in clinical processes such as digital implant planning, the superimposition of a CBCT dataset with digital intraoral scanning datasets can be recommended regarding this worklflow by using a local-best-fit relation over the virtual structure of the teeth.
Book Synopsis Digital Workflows and Material Sciences in Dental Medicine by : Tim Joda
Download or read book Digital Workflows and Material Sciences in Dental Medicine written by Tim Joda and published by . This book was released on 2021 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The trend of digitalization is an omnipresent phenomenon nowadays - in social life and in the dental community. Advancement in digital technology has fostered research into new dental materials for the use of these workflows, particularly in the field of prosthodontics and oral implantology.CAD/CAM-technology has been the game changer for the production of tooth-borne and implant-supported (monolithic) reconstructions: from optical scanning, to on-screen designing, and rapid prototyping using milling or 3D-printing. In this context, the continuous development and speedy progress in digital workflows and dental materials ensure new opportunities in dentistry.The objective of this Special Issue is to provide an update on the current knowledge with state-of-the-art theory and practical information on digital workflows to determine the uptake of technological innovations in dental materials science. In addition, emphasis is placed on identifying future research needs to manage the continuous increase in digitalization in combination with dental materials and to accomplish their clinical translation.This Special Issue welcomes all types of studies and reviews considering the perspectives of the various stakeholders with regard to digital dentistry and dental materials.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1997 with total page 1912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manual of Minor Oral Surgery for the General Dentist by : Pushkar Mehra
Download or read book Manual of Minor Oral Surgery for the General Dentist written by Pushkar Mehra and published by John Wiley & Sons. This book was released on 2015-08-03 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Manual of Minor Oral Surgery for the General Dentist, Second Edition continues the aim of providing clear and practical guidance to common surgical procedures encountered in general practice. Fully revised and updated with three additional chapters, the book approaches each procedure through detailed, step-by-step description and illustration. Ideal for general dental practitioners and students, the book is an indispensible tool for planning, performing, and evaluating a range of surgical procedures in day-to-day practice. The Manual of Minor Oral Surgery for the General Dentist begins with an expanded chapter on patient evaluation and history taking and a new chapter on managing the patient with medical comorbidities. It also address infections and sedation besides procedural chapters on such topics as third molar extractions, preprosthetic surgery, surgical implantology, crown-lengthening, and biopsy of oral lesions.
Book Synopsis Accuracy of Implant Casts Generated with Conventional and Digital Impressions U2013 An in Vitro Study by : A. Ribeiro Paulo
Download or read book Accuracy of Implant Casts Generated with Conventional and Digital Impressions U2013 An in Vitro Study written by A. Ribeiro Paulo and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Studies demonstrated that the accuracy of intra-oral scanners can be compared with conventional impressions for most indications. However, little is known about their applicability to take impressions of multiple implants.Objective: compare the accuracy between digital impressions and different conventional printing techniques in implants in order to observe differences of the novel digital impression with the conventional techniques.Material and Methods: A stone cast of an edentulous mandible with 4 implants was fabricated to serve as master cast (control), two master models were made: one with parallel implants (Model 1)and another with uneven implants(Model 2). Model 1: 4 types of impressions were taken(Group A: tray impressions with reposition abutments; Group B: Open tray impression groups for dragging copings, without splinting; Group C: Open tray impressions for ferrules; Group D: Using 3M u2122 True Definition Scanner system).Model 2: 3 types of impressions were taken(Group E: tray impressions with reposition abutments; Group F: Open tray impression groups for dragging copings, without splinting; Group G: Using 3M u2122 True Definition Scanner system).Master casts and conventional impression casts were digitized with na extraoral high-resolution scanner. Standard tessellation language (STL)data sets from the seven groups of digital and conventional impressions were superimposed with the STL data set from the master cast to assess the 3D (global)deviations. To compare the master cast with digital and conventional impressions.Results: Statistical analysis was performed using the IBMu00ae SPSSu00ae Statistics Vs. 24, NY, USA.The normality of the distributions was analysed with an Kolmogorov-Smirnov test. The median comparison was performed using The differences between the median were analyzed using non-parametric Krustal-Wallis and Mann-Whitney tests with a significance level of p
Book Synopsis Issues in Contemporary Orthodontics by : Farid Bourzgui
Download or read book Issues in Contemporary Orthodontics written by Farid Bourzgui and published by BoD – Books on Demand. This book was released on 2015-09-03 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Contemporary Orthodontics is a contribution to the ongoing debate in orthodontics, a discipline of continuous evolution, drawing from new technology and collective experience, to better meet the needs of students, residents, and practitioners of orthodontics. The book provides a comprehensive view of the major issues in orthodontics that have featured in recent debates. Abroad variety of topics is covered, including the impact of malocclusion, risk management and treatment, and innovation in orthodontics.
Book Synopsis Evaluation of Digital Implant Impressions Using an Intra-oral Computerized Scanner (iTero) Versus Conventional Implant Impressions by : G. Kinga Baskai
Download or read book Evaluation of Digital Implant Impressions Using an Intra-oral Computerized Scanner (iTero) Versus Conventional Implant Impressions written by G. Kinga Baskai and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Graftless Solutions for the Edentulous Patient by : Saj Jivraj
Download or read book Graftless Solutions for the Edentulous Patient written by Saj Jivraj and published by Springer Nature. This book was released on 2023-07-21 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, designed to meet the needs of clinicians and now in an extensively revised second edition, clearly explains the rationale and technique for the rehabilitation of fully edentulous patients utilizing traditional graftless concepts as well as zygomatic implant strategies when posterior support cannot be achieved by the former means. Considerations relevant to treatment planning and the biomechanics of immediate loading and zygomatic implants are first discussed. The techniques for placement of traditional tilted and zygomatic implants and for immediate loading of a full arch restoration are then described step by step. Detailed information and guidance are also provided on the different materials available for full arch restorations, laboratory aspects of the definitive restoration, maintenance of restorations, and management of prosthetic and surgical complications. The book concludes with a helpful series of clinical cases. Graftless Solutions for the Edentulous Patient is designed particularly for clinicians with experience in placing and restoring dental implants.
Book Synopsis Digitization in Dentistry by : Priyanka Jain
Download or read book Digitization in Dentistry written by Priyanka Jain and published by Springer Nature. This book was released on 2021-03-22 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides evidence-based guidance on the clinical applications of digital dentistry, that is, the use of dental technologies or devices that incorporate digital or computer-controlled components for the performance of dental procedures. Readers will find practically oriented information on the digital procedures currently in use in various fields of dental practice, including, for example, diagnosis and treatment planning, oral radiography, endodontics, orthodontics, implant dentistry, and esthetic dentistry. The aim is to equip practitioners with the knowledge required in order to enhance their daily practice. To this end, a problem-solving approach is adopted, with emphasis on key concepts and presentation of details in a sequential and easy to follow manner. Clear recommendations are set out, and helpful tips and tricks are highlighted. The book is written in a very readable style and is richly illustrated. Whenever appropriate, information is presented in tabular form to provide a ready overview of answers to frequent doubts and questions.
