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ePaper created 2017-06-21, 10:00:36 | version 1.38.0
| meetings IDS 2017 46 roots 2 2017 ing glass and hybrid ceramics promises great time savings in comparison to the conventional milling or sanding techniques. A fine structure feldspar ceramic infiltrated with polymer now offers an interior colour gradient with six layers in fine nuances in a time- saving and convenient process for patient-friendly aesthetics. The general trend is moving towards the more frequent production of monolithic restorations. Interesting new surface finishing materials are appearing here. The dental technician sprays a thin layer of a transparent version on sintered zirconium oxide restorations; the spray diffuses during the fir- ing process in the surface where it bonds intensively, homogenously, non-porously and smoothly after the first firing without additional polishing. In addition to milling and sanding the possibilities of the printing techniques are expanding considerably. A wide range of splints, models, drilling templates, indi- rect bonding trays, in the near future temporary and permanent dentures—almost everything can be printed. Laboratory systems now offer even bigger building platforms and convenient remote maintenance for network-compatible models. Meanwhile, the speed is picking up—just to get an idea of the magnitude: seven splints in one hour are definitely possible today. Innovative software even enables a combined ad- ditive/subtractive production: where it comes down to the highest precision, the machine subsequently carries out an automatic milling process and thus cre- ates overall a consistently high surface finish. Today, multi-material printers are perhaps visible on the horizon. For example, six plastics are mixed to make a new compound with the defined required properties; for instance, with specific colouring or interior colour gradients for a patient-specific design. As an alternative to their own production, the labora- tory can also outsource jobs to a central or industrial sup- plier. Models can be delivered within short lead times, prompt service is offered using digital technology. Forward planning in endodontics New digital technology is also available for endo- dontics; after planning tools initially established themselves in the field of implantology and more re- cently in orthodontics, a root canal treatment can now also be simulated in advance—its complexity more accurately estimated and ultimately planned step by step. A 3-D X-ray and innovative software form the basis here. This enables the dentist to follow the course of the canals on the monitor using dot markers through to the root tip. Subsequently he sees in (orthogonal) cuts (to the canal), at which points calcifications are present for example. He can also pre-test virtual filing. All of the information gained from the simulation is taken into account when carrying out the treatment, or in the case of a general dentist, if necessary a referral to the special- ist is provided. Part thermally treated filing assists in safely and hygienically preparing even strongly curved canals. The stiffer material at the shaft increases the tactile control when navigating through the root canals, whereas the tip of the instrument is particularly flexible. If a root pin is attached before the crown is restored, models made of a fibreglass reinforced composite make canal extensions superfluous. Because such a pin can be extended across the entire root canal, it adapts to suit the natural anatomy and thus enables a substance-friendly treatment. Gaining through combination: microscopy and diagnostics Because endodontics always involves particu- larly small structures, further developed OP micro- scopes also offer interesting opportunities here. These are even becoming increasingly interesting for other dentistry part disciplines thanks to cur- rent innovations. For example, an integrated fluo-