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vita Easyshade Operating Manual Download Page 9

V I T A E a s y s h a d e

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8. Continue to pull back on the Infection Control Shield,

stretching the shield at least 2-3 cm beyond the retainer at

the top of the probe. The material can withstand
considerable streching. It is important to have a uniformly
tight stretch and to avoid unevenness over the probe tip.

9. When the Infection Control Shield is stretched to its

maximum, pull the shield down over the retainer at the top
of the probe; then release the shield to secure it in place,
hooked on the retainer.

10. Verify that the Shield is stretched uniformly and flatly over

the face of the probe tip and that the shield has not torn
during the application.

11.

The shield should remain in place for all

measurements with the same patient. After single-patient
usage the shield should be properly disposed.

The photo shows an improperly positioned Infection Control
Shield. The shield is not stretched uniformly over the tip of the
probe. This non-uniform distribution of material over the probe tip

may cause inaccurate shade measurement.

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Summary of Contents for Easyshade

Page 1: ...3D Master Vita System E q uipment All Ceram i c s S e r v i c e V e n e e r i n g M a t e r i a l s Teeth Operating manual Date of issue 5 04 VITA Easyshade ...

Page 2: ...18 5 Measuring a shade tab 22 6 Operating in extended mode 23 6 1 Extended color information for a tooth 23 6 2 Extended color information for a restoration 28 7 Care and maintenance 29 7 1 Packing for transport 29 8 Cleaning and disinfecting 29 9 Appendix 30 9 1 Self test 30 9 2 Troubleshooting 32 9 3 Changing the lamp 34 9 4 Replacing the calibration block 34 9 5 Color measurement overview 36 9 ...

Page 3: ... rest the hand piece in the cradle 4 Plug the Power Cable into the rear of the left side of the instrument and into an appropriate power outlet Easyshade is now ready to power up Refer to page 1 Quick Start Guide ot turn to section 1 Getting started page 2 1 2 Power up Turn on the Easyshade by pressing the power switch located on the left front of the unit The fan will turn on and the screen will ...

Page 4: ...er on Defaults When the Easyshade is warming up the bottom of the screen displays a Presets selection box Touching Presets allows the Easyshade s default mode of operation to be selected and saved Once the default mode of operation is selected it should rarely if ever needed to be changed Touching Presets on the warm up or calibration screen causes display of the following screen This screen allow...

Page 5: ...ugh 3D Classical displays the result of a single measurement of a tooth in VITA 3D Master or VITA Classical shades and 3D Master only only 3D Master shades The factory default mode is 3D Master only Touching Back causes the volume brightness adjustment screen to be displayed Touching Exit Save causes the changes to the settings if any to be saved Touching Next causes the following screen to be dis...

Page 6: ...e displayed Touching the top bar Install Cal Block allows a new calibration block to be installed on the Easyshade This will only be required if the calibration block that was shipped with the instrument is lost or damaged Refer to Section 9 4 in the Appendix Replacing the Calibration Block Touching the second bar Self Test initiates an interactive test of Easyshade that is described in the Append...

Page 7: ...ethane are non allergenic and are for single patient use only A box of 40 shields is shipped with Easyshade Infection Control Shields may be re ordered from VITA in quantities of 4 boxes of 40 shields VITA Order No D39003 It is recommended that you wear gloves while applying the Infection Control Shield 1 Remove a Shield from the package and hold the shield at the top the wide end 2 Peel the corne...

Page 8: ...o peel the Infection Control Shield from the cover film until it is completely removed 6 Open the pocket of the Infection Control Shield this is easier if the Infection Control Shield is stretched slightly and insert the tip of the probe 7 Pull back on the Infection Control Shield until the probe tip is centered in the bottom of the pocket ...

Page 9: ...t the top of the probe then release the shield to secure it in place hooked on the retainer 10 Verify that the Shield is stretched uniformly and flatly over the face of the probe tip and that the shield has not torn during the application 11 The shield should remain in place for all measurements with the same patient After single patient usage the shield should be properly disposed The photo shows...

Page 10: ... measurement 1 Remove Easyshade from the cradle 2 Apply an Infection Control Shield as described in section 1 3 3 Grasp the Hand Piece and insert the probe tip into the calibration port aperture so that is makes perpendicular contact with the calibration block Note When the probe is perfectly vertical it is not perpendicular to the calibration block To be perpendicular to the calibration block the...

Page 11: ...ibration begins when the screen below is displayed Hold the probe tip steadily in place until the Easyshade emits a single Beep and displays the following screen which indicates that a successful calibration has been made Caution If the probe is lifted off of the calibration block too soon before the Beep is heard the calibration measurement may be compromised and should be repeated as indicated b...

Page 12: ...s successfully calibrated the following screen is displayed If Easyshade is set to measure a single area on a tooth and Normal or Average has been selected in the Preset menus then the following screen is displayed To display shade matching results based on the average of a series of measurements of a tooth touch Average OFF on the above screen to change it to Average ON Measurement averaging is d...

Page 13: ...acement probe tip not flush on surface of tooth Incorrect incisal placement probe tip must be have a minimum distance of 2 mm to the incisal edge Incorrect cervical placement probe tip too close to gingival tissue Maintain minimum distance of 2 mm to tissue margin 3 1 Measuring the Base Shade of a Tooth The base shade of a tooth may be determined in a single measurement or it may be determined as ...

Page 14: ... surface of a tooth prior to measurement It may be necessary to wipe the tooth with gauze to prevent the tip from sliding To measure a tooth 1 Hold the probe tip steay at 90 to the surface of the tooth 2 While holding the probe tip steadily against the tooth press the Measurement Button on the Hand Piece until the Easyshade beeps to indicate completion of the measurement which may be 1 to 2 second...

Page 15: ...g knowledge of color theory Refer to Section 6 Operating in Extended Mode In some cases Easyshade will display one or two alternate Classical shades in a smaller font below the nearest Classical shade which is displayed in a larger font Below are two such examples The above example shows that the nearest Classical shade is A3 but that the measurement is actually between A3 and A3 5 The example bel...

Page 16: ...g an average shade To display the average result of a series of measurements of the same tooth Averaging must be made available in the Presets menu as described in Section 1 2 and turned ON as shown in the following display In this mode of operation the tooth may be measured several times Each time the tooth is measured the shade is displayed along with the number of measurements that have been av...

Page 17: ...tissue When measuring the incisal edge of the tooth make sure that the probe tip is at least 2 0 mm from the edge of the tooth Measuring the cervical area of the tooth causes the result to be displayed as follows Note If a tooth area needs to be re measured touch the tooth area on the graphical tooth map and the solid circle target will return to that site allowing the new measurement to be made T...

Page 18: ...3D Master measurements causes the display of additional information on the positioning of the measurement in color space This information may be of use to examiners having knowledge of color theory Refer to Section 6 Operating in Extended Mode The above screen shows the shade of the incisal edge reported as a VITA ceramic enamel shade Alternatively depending on the selection of the Preset menu des...

Page 19: ...he shade measured at the natural tooth To verify a restoration select Restoration on the measurement style menu shown on the following screen Note Touching the Next or Previous indicators causes the display to scroll through Tooth single Tooth areas Restoration and Shade Tab These selections do not affect the power on defaults The first step in verifying a restoration is selecting the prescribed i...

Page 20: ...ups 2 and 3 yielding a 2 5 value group Similarly the selected chroma position is midway between 2 and 3 yielding a 2 5 chroma Touching the Classical selection area at the top right of this screen causes the display of the following screen from which a Classical shade may be selected Similarly touching 3D Master causes the selection panel for 3D shades to be displayed If the shade to be verified ha...

Page 21: ...e accuracy of the measurement in color space This information may be of use to examiners having knowledge of color theory Refer to Section 6 Operating in Extended Mode If a Classical shade is entered as the prescribed intro oral shade for the restoration in this example A3 the following screen is displayed Hold the tip of the probe to the middle 1 3 of the restoration and press the hand piece swit...

Page 22: ...e entered shade also evaluates the quality of the comparison as Good Fair or Adjust 1 Good means that an expert at shade matching may see little or no difference between the restoration and the target shade to which it has been verified 2 Fair means that an expert at shade matching may see a noticeable but acceptable difference between the restoration and the target shade to which it has been veri...

Page 23: ...Shade Tab These selections do not affect the power on defaults The shade tab may now be measured by holding the probe tip at 90 to surface at the middle 1 3 of the tab pressing the measurement button on the Hand Piece and waiting until the Easyshade beeps to indicate successful completion of the measurement A screen is then displayed that compares the measurement results with the closest shade mat...

Page 24: ...ces on color theory refer to the Appendix Section 9 5 Color Measurement Overview 6 1 Extended Color Information for a Tooth Assume that a tooth has been measured and the results are displayed as follows Touching the reported 3D Master shade causes the following screen to be displayed This screen shows the positioning of the tooth in 3D Master color space It shows that the tooth has a red Hue an in...

Page 25: ...hown below The option to scroll through a range of Hues allows evaluation of Value and Chroma at variable Hue levels Touching the area in the lower left corner of the screen causes the screen to zoom in and adds labeling to the shades as shown below The above screen shows that the Value is between a 3 and a 4 and that the Chroma is very close to a 1 Touching the color space screen anywhere except ...

Page 26: ...g anywhere on the translucency screen causes the display of the following screen This screen shows the L a b C and h color space coordinates of the measurement with a D65 illuminant and 2º observer Normally these are reported as tristimulus sets L a b or L C h Touching anywhere on the color tristimulus screen causes the display of the following screen This screen shows the spectrum for the tooth i...

Page 27: ...raphs show that the tooth is darker slightly less chromatic and much more reddish than a C2 Touching anywhere on this screen causes the display of the following screen The above screen shows the positioning of the Classical measurement in Classical Value Chroma color space This initial screen shows all Hue values Touching the and areas on the scroll bar to the right of the screen causes the displa...

Page 28: ...near a D2 C1 and C2 Using the Hue scroll bar causes the following screen to be displayed This screen shows that when Hue is also considered C2 is the nearest Classical shade Touching the color space screen anywhere except in the control areas in the corner causes the display of the translucency screen followed by the LCh and Lab color space screen and the spectrum screen as is done for the 3D Mast...

Page 29: ...e results are displayed as follows Touching the quality assessment Good selection box causes the following screen to be displayed This screen shows the positioning of the restoration with respect to the color space coordinates L a b C h for the prescribed intra oral shade In this example L for the restoration is 1 8 units greater than L for the 2 5M2 5 target shade For additional information on th...

Page 30: ... placed correctly into the lower layer of foam packing material the upper layer of foam packing material can be up on top of it The empty space intended to store the User Manual below the cover of the shipping container can be filled with additional packaging material e g foam material 8 Cleaning and Disinfecting After each patient use the Easyshade hand piece and base unit should be wiped down wi...

Page 31: ...ough the following screen accessible through the Presets menus described in Section 1 2 Touching Self Test begins the test and displays the following screen Test the calibration switch by inserting the Easyshade probe into the Calibration Port 3 times If the test is successful the following screen is displayed ...

Page 32: ...ainst an opaque surface or insert the probe into the Caibration Port in order to eliminate background light Press Next to initiate a test of the dark level the lamp and the shutter The following screen is then displayed When the test is completed Easyshade will reset itself and display the following screen Touching Back returns the Easyshade to the Presets menu from which the Self Test was initiat...

Page 33: ...orrectly positioned or was lifted or moved during the measurement Measure again being careful to use proper probe placement technique Consistently inaccurate shades are displayed when testing on Shade Tabs Recalibrate the unit Make sure that the calibration block is clean Make sure that the probe tip is clean then recalibrate Use only approved Easyshade Infection Control Shields Repeat the measure...

Page 34: ...or natural reasons Switch to the Averaging Mode and take several measurements in approximately the same area of the tooth until a consistent shade is reported Error Message Then Write Flash Key Fail or Verify Call the VITA Hotline at 49 7761 562 222 Lamp Intensity Low or Lamp Not Secure Check lamp per the instructions in Section 9 3 Replace if necessary Please Re measure Unstable Lifted too soon A...

Page 35: ...om the lamp holder 6 Insert the new lamp into the lamp holder pressing the lamp until it is firmly held in place by the spring clip Avoid over insertion of the lamp that would cause the lamp to contact the shutter mechanism Avoid touching the bulb surface 7 Plug the lamp connector into the lamp board 8 Replace the lamp cover and secure the two mounting screws Reconnect the Easyshade to the power s...

Page 36: ...been entered the screen will automatically advance for the entry of block Code B If you need to correct an entry at any time simply touch the number then touch the replacement number on the touch keypad On any of the Calibration Block screens selecting the and buttons will cause the display of the previous or next screen respectively Once the final block Code has been entered the Calibration Block...

Page 37: ...nstruct 5500 Easyshade uses the D65 6 500 ºK illuminant for shade matching This illuminant is a mathematical construct that cannot be physically realized as a light source but is close to average northern sky daylight Specular Light Specular light commonly referred to as glare is reflected off the surface of an object and with the exception of metals contains no color information about the object ...

Page 38: ...0 White a is a measure of redness a 0 or greenness a 0 b is a measure of yellowness b 0 or blueness b 0 The L a b color space is shown in Figure 1 Along the vertical axis the neutral axis between black L 0 and white L 100 is a continuous range of gray shades The CIE L C h system is a cylindrical coordinate representation of the L a b color space In any horizontal color plane in the L a b color spa...

Page 39: ...we commonly call color red yellow green blue or some other color It corresponds to the physical wavelength of light It is represented as an angle ranging from 0 to 360 Angles that range from 0 to 90 are reds oranges and yellows 90 to 180 are yellows yellow greens and greens 180 to 270 are greens cyans blue greens and blues 270 to 360 are blues purples and magentas returning again to red at 360 The...

Page 40: ...d sensitivities of the human eye over the range of visible light from 380 nm to 720 nm Depending on the relative size of the area being viewed the perception of color can change slightly This is because the color sensing cells in the eye cones are concentrated in a central area of the retina called the fovea centralis Cells that are very sensitive to lightness but not color are distributed through...

Page 41: ...the illuminant the XYZ tristimulus functions and subsequently the L a b and L C h values are calculated By changing the spectrum of the illuminant L a b and L C h values may be calculated to show the impact on perceived color of changing the light source This is an important distinction between a colorimeter and a spectrophotometer Color Differences The L a b color space provides a three dimension...

Page 42: ...h References Richard S Hunter and Richard W Harold The Measurement of Appearance John Wiley Sons 1987 Fred W Billmeyer Jr and Max Saltzman Principles of Color Technology John Wiley Sons 1981 Anni Berger Schunn Practical Color Measurement John Wiley Sons 1994 Praktische Farbmessung Muster Schmidt Verlag 1991 9 6 Interpolated 3D Master Shades The 26 VITA 3D Master shades plus 3 Bleaching shades are ...

Page 43: ...ature range 0ºC to 40ºC 9 8 Patents and Trademarks VITA Easyshade is powered by the Pocket Spectrometer Engine and Shaderite System VITA Easyshade is covered by one or more of the following US Patents 5 745 229 5 759 030 5 851 113 5 871 351 5 880 826 5 883 708 5 926 262 5 966 205 6 038 016 6 040 902 6 118 521 6 127 673 6 188 471 6 222 620 6 233 047 6 239 868 6 246 471 6 246 479 6 249 339 6 249 340...

Page 44: ...of light In the L C h system it is represented as an angle ranging from 0 to 360 Angles that range from 0 to 90 are reds oranges and yellows 90 to 180 are yellows yellow greens and greens 180 to 270 are greens cyans blue greens and blues 270 to 360 are blues purples and magentas returning again to red at 360 the same as 0 Interpolated The mixture of two or more shades of porcelain to achieve an in...

Page 45: ...V I T A E a s y s h a d e 44 ...

Page 46: ...used in conjunction with materials and equipment from other manufacturers which are not compatible or not authorized for use with our product Furthermore our liability for the correctness of this information is independent of the legal ground and in as far as legally permissible is limited to the invoiced value of the goods supplied excluding turnover tax In particular as far as legally permissibl...

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