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cosmetic dentistry_ beauty & science International Edition

feature _ interview I I 43cosmeticdentistry 1_2014 tothemill.“Oncetheworkhasbeensenttothemill,itis transferredthereinitsentiretyandthemill’scomputer finishesthework.Inthisway,thesoftwareandscanner areimmediatelyfreedforanewassignment.” Thesoftwareisveryuser-friendly.Alldesignphases aresavedautomaticallyandpreviousphasescanbere- turnedtoflexiblyiffurtherimpressionsareneeded.The design software automatically takes into account the cusps and marginal ridges of the adjacent teeth, in ad- ditiontothecontactstrengthsdefinedbytheuser.This createsadesignthatblendsintoitssurroundingswell. _Planmeca PlanMill 40, a fast and precise milling unit for dental clinics Planmeca PlanMill 40 is an extremely precise four- axis milling unit controlled by its own computer. The device is suitable for all single-tooth indications, in otherwordsforthemillingofcrowns,inlays,onlaysand veneers.Themillcanmanagebridgesofuptofiveunits intheposteriorareaandthreeunitsintheanteriorarea. Since the mill handles the milled pieces completely independently, as many as several dozen pieces can be sent to the mill at a time. In addition, the device determineswhichblocksize,colourandmaterialshould beused,soanymemberofthestaffcanplacetheblock in the mill. “This saves everyone working time. The dentist does not need to put the block in himself,” said Kajander. PlanmecaPlanMill40hasasix-toolexchangemech- anism,anditchangestoolsindependentlyaccordingto differentjobrequirements.Inaddition,thedevicemills different materials according to their properties. For example,itknowshowtohandledelicateceramicsgen- tly in work phases that require precision. “If you force thematerial,itmaybreakprematurely.Eventhesmall- esthairlinecrackinthematerialcanleadtoacemented piecebreakingwhenpressureisappliedtoit.” Also,themaintenanceofthedeviceiseasy.Themill’s computer calculates the service life of the tools, mon- itors wear and reports on these via the user interface. It also calculates the time that milling will take and lets the user know when the tools or water should be replaced. “Similar to a car, a mill requires maintenance atcertainintervalsandnotifiestheuserofthis.” _An ideal solution for laboratories too For dental laboratories, Planmeca offers a compre- hensive solution that utilises the open STL file format. PlanmecaPlanScanLabisanaccuratedesktopscanner that uses blue light for scanning gypsum models and impressions. The device scans gypsum models quickly andeffortlesslywithanaccuracyof15µm. Design takes place in the open Planmeca PlanCAD Premium laboratory software, which can be used for the design of all prostheses, ranging from one-tooth units to full arch structures. The software can also be usedtodesignforexampleindividualabutments,night and sports guards, different crown and bridge work andimplantbridgesandbarsforcement-retainedand screw-retainedsolutions. Thesoftwarehasanordermanagerpagethatlends efficiency to the workflow by reporting each stage of work. In this way, several work orders can be entered into the software in one go. The last phase is always saved in the memory so that work can be continued freelyatthemostconvenienttime.Inaddition,precise values can be set for each workpiece to allow for cementspaceandthemillingunit’sblade. AnopenSTLfileiscreatedfromthedesign,andthe designcanbemanufacturedwithanymillingunitthat supports the open file format, including Planmeca PlanMill 50. This milling unit can mill any soft, wet and dry materials and for example glass ceramics. Inaddition,thefilecanbesenttoamillingcentre,such as Planmeca’s own PlanEasyMill milling centre, for manufacture._ Fig. 4_Planmeca PlanMill 40. Fig. 5_Planmeca PlanScan Lab. Fig. 6_Planmeca PlanMill 50. Fig. 7_Planmeca PlanCAD Premium. Fig. 7 Fig. 5Fig. 4 Planmeca Oy Asentajankatu 6 00880 Helsinki,Finland www.planmeca.com CAD/CAM_contact Fig. 6 CDE0114_42-43_Planmeca 11.06.14 14:10 Seite 2