15. July 2015
Pages: 3 - 61
Page 3, Language: Arabic
Editorial
Nahas, Rabih
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According to the manufacturer VITA Zahnfabrik (Bad Säckingen, Germany), what makes the CAD/CAM material VITA ENAMIC special is the innovative network structure in which the ceramic and polymer are fully integrated with one another. The acrylate polymer ensures for example that the hybrid ceramic offers significantly greater elasticity than conventional dental ceramics. Studies have shown that thanks to this enhanced material flexibility and reduced brittleness, VITA ENAMIC demonstrates more tolerance when force is applied than conventional CAD/CAM ceramics.
In the case of restorations in the sensitive anterior region, in addition to direct and indirect ceramic solutions, minimally invasive options for realising direct and highly durable restorations using composites have also been long established. However, one particular challenge which remains is the treatment of dental traumas and tooth gaps. In such cases a stable and reliable basis for the artificial tooth is required. This article describes the use of the material GrandTEC (VOCO) as an ideal medium for creating direct and natural-looking restorations using composites.
In previous years numerous companies from the dental industry have been portrayed in our Global Player series. Naturally, several renowned companies worldwide are still missing in this series, but over the past decades it has provided a very good overview of the most wellknown manufacturers. We can now fill in one large gap. Hager & Meisinger, in fact one of the world-famous dental companies and one of the market leaders in rotary instruments - has as yet not been the subject of a report. We are extremely pleased that we can make up for this in this issue and present the manufacturer here at last, who says about itself: "We regard the Arabian dental world as a motor for bringing innovations quickly to the user."
The first oral scanners for digital impression-taking came onto the market in 2009. The introduction of digital impression techniques meant that dental laboratories could be directly integrated in the digital workflow. Among other things this resulted in an improvement in the workflow and simplification of the communication between the dentist and dental technician. In the following a colleague and a master dental technician describe their experiences in the dental practice and laboratory after 5 years of digital impression-taking, discuss the advantages and disadvantages and present the varied application options by way of examples.
Lithium disilicate monolithic restorations are characterised by high flexural strength, precise fit and optimum functioning. This material's ability to be gentle to the opposing dentition is valued as much as unproblematic fabrication. Monolithic restorations in the posterior region fabricated using lithium disilicate (IPS e.max®) have become established in the daily laboratory routine. The advantages
include:
- precise conversion of the wax pattern in ceramic
- possibility of a biomechanical occlusal design thanks to the wax-up technique
- no risk of chipping
- anatomical details, even with low space availability
- efficient fabrication
The survival of an all-ceramic inlay is substantially influenced by the dentist himself as it is partly determined by the manner in which the tooth is prepared. A university working group has now made new recommendations for preparation for ceramic inlays; these were drawn up on the basis of developments in instruments. The following description shows the individual steps in sequence for shaping a three-surface molar cavity and, using this case example, illustrates how the results of preparation can be optimized without major additional effort.
Dental injuries are the most frequently occurring orofacial injuries in sports activities. Further, the most serious and life-threatening consequence of orofacial trauma is concussion. Not only do mouthguards protect teeth, but they also protect the head from blows to the jaw that can result in concussions and unconsciousness. This article reviews the different types of sport-caused injuries, as well as their management and prevention. It also highlights the indications and benefits of mouthguard use, and the types of mouthguards.
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