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International Journal of Computerized Dentistry

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https://www.readbyqxmd.com/read/28008431/3d-printed-orthodontic-brackets-proof-of-concept
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
https://www.readbyqxmd.com/read/27644177/development-of-a-digital-impression-procedure-using-photogrammetry-for-complete-denture-fabrication
#12
COMPARATIVE STUDY
Takashi Matsuda, Takaharu Goto, Kosuke Kurahashi, Toshiya Kashiwabara, Tetsuo Ichikawa
OBJECTIVES: We developed an innovative procedure for digitizing maxillary edentulous residual ridges with a photogrammetric system capable of estimating three-dimensional (3D) digital forms from multiple two-dimensional (2D) digital images. The aim of this study was to validate the effectiveness of the photogrammetric system. MATERIALS AND METHODS: Impressions of the maxillary residual ridges of five edentulous patients were taken with four kinds of procedures: three conventional impression procedures and the photogrammetric system...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27644176/editorial-our-impact-factor-and-the-digitalization-of-dentistry
#13
EDITORIAL
Albert Mehl
No abstract text is available yet for this article.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274564/microveneering-technique-for-esthetic-enhancement-of-monolithic-zirconia-restorations
#14
Andreas Kurbad
The importance of monolithic ceramic restorations is growing, given the safe and cost-effective options for fabrication of such dental crowns and fixed dental prostheses. The optical characteristics of traditional zirconia do not suffice for this purpose. Improved restorative materials that can achieve satisfactory results in posterior restorations have been proposed to solve the problem. In the anterior region, however, even "esthetic" zirconia ceramic is unable to attain results comparable to those of glass-ceramic...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274563/science-beyond-fiction-a-revolution-of-knowledge-transfer-in-research-education-and-practice-is-on-the-horizon
#15
Alexander Ammann
"Digitality" (as opposed to "digitalization"--the conversion from the analog domain to the digital domain) will open up a whole new world that does not originate from the analog world. Contemporary research in the field of neural concepts and neuromorphic computing systems will lead to convergences between the world of digitality and the world of neuronality, giving the theme "Knowledge and Culture" a new meaning. The simulation of virtual multidimensional and contextual spaces will transform the transfer of knowledge from a uni- and bidirectional process into an interactive experience...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274562/the-effect-of-immediate-dentin-sealing-and-optical-powder-removal-method-on-the-fracture-resistance-of-cad-cam-fabricated-endocrowns
#16
Hatem M El-Damanhoury, Marianna Gaintantzopoulou
OBJECTIVES: To evaluate the effect of immediate dentin sealing and optical powder removal method on the fracture resistance of CAD/CAM-fabricated ceramic endocrowns. MATERIALS AND METHODS: Seventy-eight extracted premolars were endodontically treated. Standardized endocrown preparations were done in 60 teeth. Teeth were divided equally (n = 10) depending on the treatment of dentin (delayed sealing [DS] or immediate sealing [IS]), and the methods of optical powder removal (air-water spray washing [AW]; microabrasion [MA]; or aqueous suspension of pumice [PB], followed by air-water spray washing)...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274561/understanding-dental-cad-cam-for-restorations-dental-milling-machines-from-a-mechanical-engineering-viewpoint-part-b-labside-milling-machines
#17
Nicolas Lebon, Laurent Tapie, Francois Duret, Jean-Pierre Attal
Nowadays, dental numerical controlled (NC) milling machines are available for dental laboratories (labside solution) and dental production centers. This article provides a mechanical engineering approach to NC milling machines to help dental technicians understand the involvement of technology in digital dentistry practice. The technical and economic criteria are described for four labside and two production center dental NC milling machines available on the market. The technical criteria are focused on the capacities of the embedded technologies of milling machines to mill prosthetic materials and various restoration shapes...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274560/comparison-of-fracture-loads-of-cad-cam-and-conventionally-fabricated-temporary-fixed-dental-prostheses-after-different-aging-regimens
#18
COMPARATIVE STUDY
Daniel Edelhoff, Daniela Schraml, Marlis Eichberger, Bogna Stawarczyk
This study evaluated the fracture loads of different threeunit fixed dental prostheses (FDPs) for temporary restorations. In total, three CAD/CAM materials (VITA CADTemp [CT], Telio CAD [TC], and ZENO ProFix [ZP]) and two chairside materials (Protemp 4 [PT], and Dentalon Plus [DP]) were used for the fabrication of the FDPs. Sixteen FDPs were fabricated from each material in an anatomical shape and stored in 0.9% NaCl solution at 37°C for 14 days. Thereafter, one half of the specimens from each group (n = 8) were additionally mechanically and thermally loaded (240,000 chewing cycles, 50 N, 5°/55°C, 2,100 thermal cycles)...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27274559/materials-for-use-in-dental-cad-cam-technology-spoiled-for-choice-or-a-wellspring-of-new-possibilities
#19
EDITORIAL
Bernd Reiss
No abstract text is available yet for this article.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27027104/canine-guidance-via-biogeneric-copy-a-clinical-report
#20
Thomas C Kunkel, Robert L Engelmeier
The advent of computer-aided design/computer-aided manufacturing (CAD/CAM) technology in dentistry has enabled a wide range of applications. The Cerec Acquisition Center (Cerec AC, Sirona Dental Systems Inc., Charlotte, NC) allows for the construction of all-porcelain restorations, either in-office or through a remote dental laboratory. One feature of the Cerec AC is its ability to duplicate the dental morphology of an existing tooth onto a new CAD/CAM ceramic restoration designed for that tooth. This design mode capability of the Cerec AC is termed Biogeneric Copy...
2016: International Journal of Computerized Dentistry
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