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International Journal of Computerized Dentistry

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https://www.readbyqxmd.com/read/28294209/tooth-supported-surgical-guides-for-guided-placement-of-%C3%A2-single-tooth-implants
#1
Andreas Kurbad
Computer-assisted technologies open up new possibilities for significantly improving the planning and realization of implant-supported dental restorations. Three-dimensional (3D) data acquired with an intraoral sensor can be merged with comparable data acquired by various radiographic imaging techniques. Implant planning with this type of support can generate data for the manufacture of surgical guides for dental implants. The guides can then be fabricated either by a third-party provider or by the implantologist directly, by using time- and cost-saving in-office systems...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294208/3d-endo-three-dimensional-endodontic-treatment-planning
#2
Jörg Philipp Tchorz
This case report describes the three-dimensional (3D) endodontic treatment planning of a complex maxillary incisor using the 3D Endo software (Dentsply Sirona, Bensheim, Germany). Apart from a step-by-step description of the planning, the actual endodontic treatment is shown, and possible indications for the 3D Endo software are discussed.
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294207/selecting-the-appropriate-digital-planning-pathway-%C3%A2-for-computer-guided-implant-surgery
#3
Alejandro Lanis, Pablo Llorens, Orlando Álvarez Del Canto
The incorporation of virtual engineering into our profession and the digitalization of information are allowing us new perspectives and innovative alternatives for dental treatment modalities. The use of computer-guided implant-planning software allows the radiographic, prosthetic, surgical, and laboratory fields to be combined under a common virtual scenario, permitting complete virtual treatment planning. Different alternatives for the digital workflow have been described for computer-guided implant placement...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294206/evaluation-of-accuracy-and-repeatability-using-cbct-and-a-dental-scanner-by-means-of-3d-software
#4
So-Ri Kim, Chong-Myeong Kim, Il-Do Jeong, Woong-Chul Kim, Hae-Young Kim, Ji-Hwan Kim
OBJECTIVE: The objective of the present study was to compare and evaluate the accuracy of three-dimensional (3D) image data acquired from cone beam computed tomography (CBCT) and a dental scanner using 3D software. MATERIALS AND METHODS: After selecting the full-arch forms of the maxilla and mandible as the master cast, the master cast was scanned via a high-precision optical scanner for use as master model data. The model was scanned 12 times each using CBCT and a dental scanner...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294205/fracture-resistance-of-different-implant-abutments-supporting-%C3%A2-all-ceramic-single-crowns-after-aging
#5
Michael Stimmelmayr, Philipp Heiß, Kurt Erdelt, Josef Schweiger, Florian Beuer
OBJECTIVE: To test the mechanical properties of three different restorative materials for implant abutments supporting all-ceramic single crowns. MATERIALS AND METHODS: Thirty implants with butt-joint connections were distributed into three test groups: Group A with 10 one-piece zirconia abutments, Group U with 10 titanium abutments, and Group T with 10 titanium-zirconia hybrid abutments. Monolithic zirconia single crowns were cemented and artificially aged. The crowns were loaded at a 30-degree angle in a universal testing machine until fracture or bending...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294204/investigations-on-the-accuracy-of-3d-printed-drill-guides-for-dental-implantology
#6
André Neumeister, Linda Schulz, Christoph Glodecki
This article describes the computer-aided design/computer-aided manufacture (CAD/CAM) accuracy of dental drill guides for application in guided surgery. Today, the availability of three-dimensional (3D) desktop printers allows for the cost-effective production of drill guides by dental laboratories. Our investigations show the accuracy of produced guides by eliminating influencing factors that exist in the guided surgery workflow. To investigate this accuracy, a method was developed to evaluate the CAD/CAM production technology apart from sources of error from cone beam computed tomography (CBCT) scans, intraoral scans, software or human error...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294203/accuracy-and-reproducibility-of-four-cone-beam-computed-tomography-devices-using-3d-implant-planning-software
#7
Michael Stimmelmayr, Katharina Denk, Kurt Erdelt, Gerald Krennmair, Sonia Mansour, Florian Beuer, Jan-Frederik Güth
OBJECTIVE: To measure the deviations of four different cone beam computed tomography (CBCT) devices in three dimensions by means of a three-dimensional (3D) implant-planning program. MATERIALS AND METHODS: A master radiographic template with two vertical, two transverse, and two sagittal radiopaque markers was fabricated for a human dry skull. The lengths of the markers were measured with a high-precision caliper. The skull and the template were scanned in each of the four CBCT devices (1...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294202/navigation-in-implantology
#8
Insa Herklotz, Florian Beuer, Andreas Kunz, Detlef Hildebrand, Arndt Happe
The primary objective of implant insertion is optimal prosthetic implant positioning while simultaneously protecting sensitive anatomical structures. In this context, navigated implants show significantly better results than freehand-inserted implants. Computer-assisted navigation, in combination with three-dimensional (3D) imaging by cone beam computed tomography (CBCT), is an ideal way to achieve higher predictability for successful implant therapy. Basically, one can distinguish between static navigation using templates, and direct dynamic navigation using optical transmission systems...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28294201/editorial-navigated-implantology-quo-vadis
#9
Lutz Ritter
No abstract text is available yet for this article.
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008431/3d-printed-orthodontic-brackets-proof-of-concept
#10
Karl-Friedrich Krey, Nawras Darkazanly, Rolf Kühnert, Sebastian Ruge
Today, orthodontic treatment with fixed appliances is usually carried out using preprogrammed straight-wire brackets made of metal or ceramics. OBJECTIVE: The goal of this study was to determine the possibility of clinically implementing a fully digital workflow with individually designed and three-dimensionally printed (3D-printed) brackets. MATERIALS AND METHODS: Edgewise brackets were designed using computer-aided design (CAD) software for demonstration purposes...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008430/surgical-and-prosthetic-dental-rehabilitation-through-a-complete-digital-workflow-a-case-report
#11
Panagiotis Tsirogiannis, Sascha Pieger, Stavros Pelekanos, Stefanos Kourtis
Several aspects of digital dentistry have recently been improved, including new materials, navigated implant placement, digital impression in combination with virtual articulation, and the computer-aided processes of designing and manufacturing of prosthetic restorations. In this case report, the prosthodontic treatment of a patient through a complete digital workflow is presented. A 39-year-old male patient presented for restoration of missing teeth in the posterior maxilla and mandible. In a single-tooth narrow gap (region 15), a Straumann NNC implant was placed by computer-assisted planning and navigation...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008429/applications-of-patient-specific-3d-printing-in-medicine
#12
Martin Heller, Heide-Katharina Bauer, Elisabeth Goetze, Matthias Gielisch, Klaus E Roth, Philipp Drees, Gerrit S Maier, Bernhard Dorweiler, Ahmed Ghazy, Meik Neufurth, Werner E G Müller, Heinz C Schröder, Xiaohong Wang, Christian-Friedrich Vahl, Bilal Al-Nawas
Already three decades ago, the potential of medical 3D printing (3DP) or rapid prototyping for improved patient treatment began to be recognized. Since then, more and more medical indications in different surgical disciplines have been improved by using this new technique. Numerous examples have demonstrated the enormous benefit of 3DP in the medical care of patients by, for example, planning complex surgical interventions preoperatively, reducing implantation steps and anesthesia times, and helping with intraoperative orientation...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008428/materials-and-scaffolds-in-medical-3d-printing-and-bioprinting-in-the-context-of-bone-regeneration
#13
Martin Heller, Heide-Katharina Bauer, Elisabeth Goetze, Matthias Gielisch, Ibrahim T Ozbolat, Kazim K Moncal, Elias Rizk, Hermann Seitz, Michael Gelinsky, Heinz C Schröder, Xiaohong H Wang, Werner E G Müller, Bilal Al-Nawas
The structural and functional repair of lost bone is still one of the biggest challenges in regenerative medicine. In many cases, autologous bone is used for the reconstruction of bone tissue; however, the availability of autologous material is limited, which always means additional stress to the patient. Due to this, more and more frequently various biocompatible materials are being used instead for bone augmentation. In this context, in order to ensure the structural function of the bone, scaffolds are implanted and fixed into the bone defect, depending on the medical indication...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008427/social-and-legal-frame-conditions-for-3d-and-bioprinting-in-medicine
#14
Heide-Katharina Bauer, Martin Heller, Matthias Fink, Daniela Maresch, Johannes Gartner, Ulrich M Gassner, Bilal Al-Nawas
The beginnings of three-dimensional (3D) printing and bioprinting can be traced to as early as 1984. From printing inorganic models for the generation of biologic scaffolds, additive manufacturing (AM) developed to the direct printing of organic materials, including specialized tissues, proteins, and cells. In recent years, these technologies have gained significantly in relevance, and there have been several innovations, especially in the field of regenerative medicine. It is becoming increasingly important to consider the economic and social aspects of AM, particularly in education and information of medical human resources, society, and politics, as well as for the establishment of homogenous, globally adapted legal regulations...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28008426/editorial-3d-printing-in-medicine-promise-or-reality
#15
Bilal Al-Nawas
No abstract text is available yet for this article.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644182/final-restoration-of-implants-with-a-hybrid-ceramic-superstructure
#16
Andreas Kurbad
The use of materials with elastic properties for the fabrication of dental implant superstructures seems to be a promising way to reduce the functional occlusal forces on implants. Vita Enamic (Vita Zahnfabrik, Bad Säckingen), a hybrid ceramic material for CAD/CAM technology, is available in a special form that can be relatively easily combined with titanium (Ti) base connectors for the fabrication of abutment crowns and mesostructures. Thus, an easily manageable method is available for reducing peak loads on dental implant fixtures...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644181/long-term-cerec-3d-chairside-bridges-milled-from-ips-e-max-cad-lt-blocks
#17
Oliver Schneider
The experienced Cerec user can manufacture high-quality, esthetic anterior and posterior bridges from IPS e.max CAD in a manageable 3-hour chairside session. On the basis of over 8 years of experience, it can be said that these restorations are clinically very well proven, provided they are used within the range of recommended indications. Experimental retainer bridges with extensions can be seen as highly interesting alternatives, although more clinical data are required for further confirmation.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644180/the-face-scan-as-a-means-for-the-visualization-of-complex-prosthetic-reconstructions
#18
Sven Reich, Florian Peters, Olaf Schenk, Oliver Hartkamp
The face scan can serve as a means for the visualization of planes relevant for extensive prosthetic reconstructions. The key prerequisite is the availability of data in stl format for further processing in different software programs. The method is described in this article by a patient case.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644179/the-use-of-mobile-3d-scanners-in-maxillofacial-surgery
#19
COMPARATIVE STUDY
Florian Peters, Stephan Christian Möhlhenrich, Nassim Ayoub, Evgeny Goloborodko, Alireza Ghassemi, Bernd Lethaus, Frank Hölzle, Ali Modabber
There are many possibilities for the use of three-dimensional (3D) scanners in maxillofacial surgery. This study aimed to investigate whether the bundling and syncing of two 3D scanners has advantages over single-scanner acquisition in terms of scan quality and the time required to scan an object. Therefore, the speed and precision of 3D data acquisition with one scanner versus two synced scanners was measured in 30 subjects. This was done by analyzing the results obtained by scanning test objects attached to the forehead and cheeks of the subjects...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644178/accuracy-of-four-different-digital-intraoral-scanners-effects-of-the-presence-of-orthodontic-brackets-and-wire
#20
COMPARATIVE STUDY
Yoo-Ran Jung, Ji-Man Park, Youn-Sic Chun, Kkot-Nim Lee, Minji Kim
OBJECTIVE: The objective of this study was to compare the accuracy of four different digital intraoral scanners and the effects of buccal brackets and orthodontic wire. METHODS: For this study, three sets of models (Control model, BKT model with buccal bracket, and WBKT model with buccal bracket and orthodontic wire) were scanned using four different types of intraoral scanners: E4D dentist, iTero, Trios, and Zfx IntraScan. The mesiodistal width of the teeth, intercanine width, and intermolar width measured by four scanners were compared...
2016: International Journal of Computerized Dentistry
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