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cosmetic dentistry_ beauty & science International Edition

I technology _ dental radiography Fig. 6_ScanX wireless digital sensors for standard bitewing. Fig. 7_ScanX wireless digital sensors periapical. Fig. 8_ScanX wireless digital sensors endodontic. Fig. 9_ScanX wireless digital sensors panoramic. Fig. 10_ScanX wireless digital sensors cephalometric. is quite pliable and has a reasonable flex upon insertion into the mouth (Fig. 4), significantly in- creasing patient comfort. Wirelesssensorsizerange ScanX wireless digital sensors are available in a range of sizes (Fig. 5): #0 and #1 for smaller and/ or constrained mouths, #2 for standard bitewing, (Fig. 6) periapical, (Fig. 7) and endodontic (Fig. 8) images, #3 for long bite wings, #4 for occlusals, panoramic,(Fig.9)cephalometric,(Fig.10)andTMJ. Each sensor is a reusable plate that is inserted into a disposable protective barrier sleeve, positioned as required, briefly exposed, scanned and the data isimmediatelytransmittedtothecomputerforim- age display. During the scanning, the data is auto- matically erased from the sensor, preparing it for immediatere-useinanewprotectivebarriersleeve. The intraoral sizes are fabricated of a flexibly soft,reusableplasticthatcanbecurvedextensively to better fit the patient’s mouth. If the digital sen- sor is bent to the point where the surface cracks, the broken portion of the sensor surface can no longer provide diagnostic information. With rea- sonable care, each sensor should last for thou- sands of images. _Digital sensor replacement cost Most breakdowns of chip sensors occur at the wire-sensor interface. While this should be easily (and inexpensively) repairable, there is a general reluctance to refurbish this connection, and the dentist is placed in a position where new sensors must be acquired. Whether the problem is a crushed chip or a frayed lead cable, wired digital sensors are very expensive to replace (often US$ 5,000–10,000 or more). In fact, it is highly advisable to have a replace- ment (insurance) policy with the manufacturer or dealer to cover these eventualities. The replace- ment warrantee is typically more than US$1,000 per year per sensor. Wireless sensors, on the other hand, are far less costly; a size #2 replacement sensor costs about US$40. Moreover, there are no wirestobreak.Consideringalifespanofthousands of exposures, the per-use cost of a PSP digital sensor is negligible. _Developing/scanning time Conventional X-rays were developed to image viewability through chemical baths, water rinses andairdryers.Theprocesswaslongandfrustrating, particularlyiftheresultswereneededquickly.After intraoral exposure, a single film might be ready in 5–6 minutes, but a full mouth series took 10 min- utes or longer. Wired digital sensors transmit the ionization data to the software immediately, and theimagesarereadyforviewingassoonastheyare processed (typically a very minimal delay). ScanX wireless digital sensors are placed in the small footprint scanning unit, ScanX Swift (Fig. 11) and the images are available for viewing momen- tarily.ThefirstPSPimageisreadywithin11seconds, and subsequent one take 4 seconds each. Thus, a 42 I cosmeticdentistry 1_2015 Fig. 6 Fig. 8Fig. 7 Fig. 9 Fig. 10 CDE0115_40-43_Freedman 26.02.15 10:39 Seite 3 CDE0115_40-43_Freedman 26.02.1510:39 Seite 3

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