Shade-X Best Practices - X-Rite
Contents
1. Shade X Best Practices Ambient light Error 2 Instrument will display this error when light has entered the field of measurement 1 Patient should be seated in an upright position not lying down 2 Ensure that the examination light is not pointed directly into the patient s mouth 3 Ensure that the tip of the instrument is flush against the tooth Using direct vision will help detect any tilt in the instrument Flush to surface of tooth Instrument tilted upward Instrument tilted down Incorrect positi oning on the tooth instrument tilted away from tooth allowing ambient light into measurement 4 Allow the patient s upper lip to rest on the instrument s tip to limit the influence of overhead lighting 5 Avoid bright fluorescent lights during measurement If all of these directions are followed and the instrument still displays Error 2 measure a Shade tab under a desk table in order to eliminate all ambient light Hold tip flush to the surface of the shade tab If Error 2 continues to appear contact X Rite for assistance 3 6 2008 Best Practices Guide doc Disagreement with Shade Assignment If the shade assignment is not visually acceptable or consistent consider the following 1 Make sure there are no smudges are residue on the calibration plaque Clean according to User Manual Instructions 2 Check the optics glass to ensure that the glass has no smudges or residue on it Clean with a lint free2. cloth Replace disposable tip Turn off the instrument and then turn it back on to reboot it Calibrate instrument o g S gw Place tip on the tooth and ensure that the tip of the instrument is flush against the tooth Using direct vision will help detect any tilt in the instrument Tab Database to view when you want to see the shade ar assignment when measuring a new less than one year old T Vita Classical shade tab Shade Guide Vita Classical Vita 3D Master Chromascop etc this database directly correlates with the body dentin area of the listed shade tab to that of the measured natural tooth Incisal i e Vita Classical Vita 3D ae A etc this database directly correlates with the incisal area of the shade guide tab listed Tip In the case of a patient with a highly translucent tooth refer to the incisal shade database for all areas of the tooth because it will more closely correlate to the patient s shade Translucency can be misinterpreted as a lower value body shade because of the gray appearance Remember that teeth are polychromatic and moving the tip of the instrument even a fraction of a millimeter can produce a different shade assignment than your first reading Computer mapping of shifts in color on tooth 3 6 2008 Best Practices Guide doc
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