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International Journal of Computerized Dentistry

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https://www.readbyqxmd.com/read/27644182/final-restoration-of-implants-with-a-hybrid-ceramic-superstructure
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/27027103/digital-michigan-splint-from-intraoral-scanning-to-plasterless-manufacturing
#15
Philipp Dedem, Jens C Türp
AIM: To investigate whether the fully digital, plasterless fabrication of clinically usable Michigan splints can be accomplished in a time- and cost-efficient manner. MATERIALS AND METHODS: Digital scans of the maxillary and mandibular arches of 10 subjects were acquired with an intraoral scanner (3Shape, Copenhagen) and used to generate virtual models of the dental arches. Jaw relation records were made using jigs placed on the subjects' anterior teeth, and silicone registration material was referenced to the jaw models...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27027102/understanding-dental-cad-cam-for-restorations-dental-milling-machines-from-a-mechanical-engineering-viewpoint-part-a-chairside-milling-machines
#16
Nicolas Lebon, Laurent Tapie, Francois Duret, Jean-Pierre Attal
The dental milling machine is an important device in the dental CAD/CAM chain. Nowadays, dental numerical controlled (NC) milling machines are available for dental surgeries (chairside solution). This article provides a mechanical engineering approach to NC milling machines to help dentists understand the involvement of technology in digital dentistry practice. First, some technical concepts and definitions associated with NC milling machines are described from a mechanical engineering viewpoint. The technical and economic criteria of four chairside dental NC milling machines that are available on the market are then described...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27027101/3d-fitting-accuracy-evaluation-of-cad-cam-copings-comparison-with-spacer-design-settings
#17
COMPARATIVE STUDY
Philippe Boitelle, Laurent Tapie, Bernardin Mawussi, Olivier Fromentin
OBJECTIVES: The accuracy of computer-aided design/computer- aided manufacturing (CAD/CAM) systems is linked to their technical characteristics and reliability for manufacturing the restoration designed. The aim of this study was to compare the accuracy of fit of zirconia copings manufactured with different CAD/CAM systems and their capacity to conform to pre-established spacer design settings. METHODS: Sixty zirconia copings were manufactured by three CAD/CAM systems, with their spacers set as recommended by their manufacturer on occlusal, axial, and marginal surfaces...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27027100/zirconia-crowns-the-new-standard-for-single-visit-dentistry
#18
COMPARATIVE STUDY
Klaus Wiedhahn, Günter Fritzsche, Claudine Wiedhahn, Olaf Schenk
Zirconia crowns combine the advantages of metal restorations, such as minimally invasive tooth preparation and ease of cementation, with those of full ceramic crowns, such as low thermal conductivity and tooth color. With the introduction of a high-speed sintering procedure, it is possible to produce and cement zirconia crowns and small monolithic bridges in a Cerec Single Visit procedure. This new procedure is compared to established chairside methods.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/27027099/impact-factor-for-the-international-journal-of-computerized-dentistry
#19
EDITORIAL
Johannes Wolters
No abstract text is available yet for this article.
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/26734670/obituary-prof-tv-h-c-dr-med-dent-peter-schletter
#20
Olaf Schenk, Klaus Wiedhahn, Bernd Reiss
No abstract text is available yet for this article.
2015: International Journal of Computerized Dentistry
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