State of the Art Digital Shade Communication

Transcription

1 State of the Art Digital Shade Communication Original Technology by Click mouse to advance slides CDT, FNBC

2 Feature Benefit of Life Essence Digital Shade Analysis Completely mobile access & use via wi-fi Use with a shade guide in the picture or use the option of the library feature. Shade library keyed to Vita Classic & Vita 3D shade guides 97% shade matching Patient / Doctor acceptance Complete private member archive Individual Archive by doctor within your membership Print and available Accurate final restoration check Full analysis edit capability for primary analysis and restoration check at any time. A complete Prismatic surface shading adjustment matching the Vita Classic & 3D shade system Life Essence shading frits offer ability to shade monolithic restorations appear layered

3 Smart Phone / Web Access Mobile Digital Shade Analysis Option 1 We offer two options : The first option is to take a digital picture with a shade guide sample in the picture with the patients teeth to be matched. Once this picture is taken it is loaded into your member site at Spectrafire.com the shade analysis takes about 3 minutes to select & record the shade comparison information. Option 2 The second option is available when you do not have a shade tab in the picture. This option offers a digital shade library to use that will scan the internal digital libraries for the closest match for each shade zone and note the + or - % difference of the patients tooth to the library file data. The digital library includes Vita Classic & vita 3D Vita is a service mark of Zahnfabrink Bad Sackingen Germany

4 Setting The Stage For Success Before You Start Camera Preferences : iphone: We have found the iphone / smart phones do a great job and are easy to use. They usually do not require auxiliary light volume to give produce a good digital image for shade communication analysis. Any digital camera with custom white balance adjustment 2 to 4 x macro / Zoom feature and above 5 megapixels will give you a reasonable quality digital image to work with. Intraoral camera images offer images of little shade communication use. White Balance Setting Optimizes Your Digital Images You can set your camera white balance with the Spectrafire illumination card using the set white balance feature on your camera. Follow Shade Tab Position Guide Improperly positioned shade tab references skew the hue, value,chroma and translucency registry. Remove Stain / Plaque BEFORE taking images Digital cameras register most plaque debris as increased warm spectral color Lighting : Operatory & your Laboratory area lighting needs be matched to daylight standards Operatory unit lights are TOO intense, they flood the tooth with an excessive volume of light The best lighting available at this writing is 90 CRI Cabinet Utility bulbs from GE / Available from Lowes Home Improvement centers 4

5 Guide To Taking A Useful Digital Picture For Shade Communication Match Value / Grayness first. then Hue / Color Select the closest shade match that is slightly lighter chroma and cooler than the natural tooth. Place shade tab in the same facial plane as the natural teeth, with the shade numbers visible in picture Take picture about 10 degrees off perpendicular to avoid flash back on surface. #1 Optimum Lighting : Ideally the operatory and laboratory use matching brand bulbs, with the same CRI, Kelvin and Lumens for lighting in the laboratory and operatory We suggest 90 CRI minimum #2 Confirm your Operatory / Laboratory light match using the Emmons Prismatic Illumination Card with a digital photograph. #3 When you are using a SLR camera,set the white balance of your camera with a our Prismatic Light illumination card, it is the best way to set your camera white balance ) #4 ing digital pictures is very fast and efficient. #5 when you use the Spectrafire digital shade analysis software, your working picture and shade Rx are automatically archived. In your personal file. 5

6 Setting The Stage: Option 1 Option 1 Is the most accurate option for digital tooth shade analysis. 1 Have Patient setting up right to avoid glare from the ceiling lights. Use cheek retractors to avoid lip or hand shadows. 2 Pick the closest matching shade tab & position shade tab incisal to incisal. 3 Avoid placing tabs behind or in front of the patients teeth. If two or more shade tabs are required, place both in the same picture. 4 DO NOT USE FLASH IT FLOODS THE TOOTH WITH LIGHT & GIVES A FALSE REGISTRY

7 Guide To Using Digital Pictures For Shade Communication The first question may be do I need a SLR camera to accomplish this. If you are skilled in the use of a digital SLR camera It will work fine and we have guidelines to enable you to accomplish what you need to get good results with digital shade analysis. Taking a digital picture for shade communication has a few things you need to look for when you are taking the picture. Lighting quality and volume are very important 5000 /5500 kelvin lighting is the best illumination, but it needs to be in a great enough volume. I made the illumination card to give you a simple visual that tells you if the light is correct to identify and register tooth shades. The card will show a tint when the lighting volume is low or is not 5000k. The illumination card on the left Fig.1 shows good volume and 5000k illumination In the area you are working. The Illumination card on the right Fig 2 has a dark tint, this card picture was taken in a low light operatory. Fig 1 Fig 2 The illumination zone on the card will seldom show pure white illumination. The illumination zone collects and shows you the spectral colors in the room illumination. Very seldom will you see a white illumination zone when you check out door light. The next consideration is eliminating shadows. Shade guide position is important The position of the shade guide tabs is very important First, the patients lip is shadowing the cervical of the lateral. Second, the incisal tip of the guides in Fig 3 are lingual to the Labial facial plane. These shades will register 5% lower in value than the patients teeth. Plus you can not compare the tooth to guide in that area. The second problem is the lip shadow across the cervical of the lateral. If you do not eliminate hand and lip shadows Your digital picture swill not give you accurate Shade Rx analysis. Shadows and low light will register visually and digitally, gray/low value. It is best to use cheek retractors 4

8 Guide to using an Smart Phones for Digital shade communication Using the iphone or Android smart phone The smart phone is becoming the #1 choice for digital shade communication. Keep the distance from the patients face / approx. 8 inch's minimum 5 Mega pixels minimum Center tooth picture & focus / check for glare on shade guide & tooth Keep camera angle angled slightly downward & straight at the selected tooth & shade guide Take the pictures before you start the preparation Take at least three shots & check for glare & focus It is best to NOT use a flash / the flash can flood the tooth with light & alter shading. Take All SLR 18 to 24 distance 8 A flash is great for portraits, but NO good for digital shade analysis Basic Guide When you are using a SLR digital camera 5 Mega pixels minimum Finding the best f stop ( Light going into camera) We have found the average operatory setting will be one of the two settings below 1- Shutter speed 1/15 f stop 4/ 0r 4.5 Check the illumination card first to check your light volume and quality. a Center tooth picture & focus / check for glare on shade guide & tooth check for lip or hand shadows. Keep camera angle angled down 10⁰ & shade guide the same surface angle of the teeth Take the pictures before you start the preparation Take at least three shots & check for glare & focus

9 Optimizing Shade Communication & Digital Pictures For Digital Shade Analysis Rx Isolate the patient from full spectrum lighting over 5500K & outside light sources that do not check out with the Emmons Illumination guide. GE 90 CRI 2900 lumen Cabinet utility bulbs are excellent available at Lowes home improvement stores. Do not wear bright clothing. Use a gray bib for the patient & no lipstick. 1- Set the patient upright. 2-Use cheek retractors to eliminate lip shadows. 3- Check illumination volume with the Spectrafire illumination guide. Fig.3 & 4 4- Position shade guide in the same facial plane as the patients tooth 5- Position camera (or i Phone) angled approximately 10 degrees above the facial plane. This will help eliminate direct reflection on the tooth surface in your pictures. Hold the card next to patients face,the illumination zone should NOT show any color tint. The card illuminates hen the lighting is best for registering a shade, fig3 Below : Shade Guide arranged by spectral color A1, B1, D2, C1, A2, B2, C2, A3, A3.5, D3, B3, D4, C3, A4, B4, C4 Fig4 Place tab incisal to incisal- Shade Guide Position is important 8

10 Mobile Digital Shade Communication: with Smart Phone access QUICK START 9

11 10 This Is Our Home Page Login to this is our home page. Across the bottom row of buttons you can look at who we are. In about us, look at our catalog /cart store / check your lighting volume / log on in as a member / sign up as a member and contact us to use the free trial or with any questions. We have 6 tutorials across the bottom of the page for you. Plus, a short video on digital picture taking for shade analysis This next screen is the member log in screen. Just follow the screen prompts To use the Shade analysis software Log in with member button Choose file picture to start using the program and select upload 11

12 Selected file shows here & click upload Follow screen prompts Use the cursor to form a cropping zone on patients tooth area you want to do analysis. The cropped analysis area will be on the right. When you have the cropping zone in place, save to thumbnail to proceed. 11

13 Start Selection Process with placing the cursor on patient tooth image cervical & click next Sample Cursor Placement 2nd Selection by placing the cursor on shade guide tooth image cervical & click next Sample Cursor Placement 12

14 3rd Selection by placing the cursor on patient tooth image middle 3 rd & click next Sample Cursor Placement 4th Selection by placing the cursor on shade guide tooth image middle 3 rd & click next Sample Cursor Placement 14

15 5th Selection by placing the cursor on patient tooth image Incisal 3 rd & click next 6th Selection by placing the cursor on shade guide tooth image Incisal 3 rd & click next 14

16 7th Selection by placing the cursor on patient tooth image Incisal tip & click next 8th Selection by placing the cursor on patient tooth image Incisal tip& click next 16 After you click next the program will take to your home screen Then you can print or your shade analysis your analysis will be archived by Doctor nane

17 Restoration Check Upload a picture of the restoration and use the cursor to crop the restoration picture, you will be ask to select cervical, middle third, incisal & incisal tip in succession on the restoration image only. The shade analysis sytem compares tyour restoration with the original patient tooth analysis After you load the thumb nail of the restoration, you will follow the screen prompts for the cervical, the middle third, incisal third and incisal tip just place the cursor on the zone and click,moving directly to thee next zone. The Spectrafire analysis system will automatically compare your restoration to the patients tooth used in the beginning of your analysis

18 Using The Restoration Check Feature Step 2 Step 3 Step 4 After you click on NEXT in the final selection your digital Rx will instantly display. You will able able to print or directly from the Digital analysis screen.

19 This your archived digital Rx with the restoration recorded to retrieve any of your digital Rx records, open your membership and search by client (Doctor name) these are private files within your membership. Restoration Check The restoration Check enables you to know how close you are to the patients digitized analysis tooth.

20 Lighting This section deals with the transition color in light makes as it travels. 3 Basic Elements In Selecting Lighting Color Rendering Index, Lumens, Kelvin All light sources lose integrity and actually deteriorate with time. It follows the progression of a slight addition of green into the emitted light to a lot of green added into the light emission. The following scenario can occur with a single set of fluorescent bulbs. The shade is returned because you have too much orange in the A-3 (example). Basic Colors in Light & Illumination. A slight addition ( less than 5%) of green into the light emission causes the ceramic to show more orange, as the bulbs deteriorate the orange fades to yellow. Now you will get the same shade back & the complaint will be the shade too pale. Which is just the opposite of the problem you had a few months before. It is not wise to go above 5500 kelvin, 2500 lumen. Above 5500 k has different color content than true daylight, 5000 k (9AM) or 5500k (noon) & above 2500 lumen starts to glare with excessive brightness. 20

21 Color Systems- Most of us have really been in the dark about color in teeth & how we can identify & replicate what we see with dental porcelain or resin / glass. Isaac Newton discovered that sun light could be broken down into multiple colors (a rainbow) & that light is the source of color. This composite light is known as the visible light spectrum. The amount of air & residual water in a dental restoration play key roles in our ability to consistently produce porcelain restorations that have natural depth & light transmission. Basics of The Visible Light Range- We know that visible light is radiant energy that is made up of wave lengths that are from 760nm (red low energy) to 380nm (violet high energy). 100% saturation of the component spectral colors equals white / invisible light. The order of color is always the same red, orange, yellow, green, blue,violet. The best way to remember this is to remember the cowboys name - R,O,Y-G- B,V - phonetically Roy G Biv. Color in light always fades from red to violet. Red is the largest visible light wave & the slowest moving or lowest energy while violet has the highest energy & is the shortest light wave. Photons- For most of our discussion of color we can think of light (photons ) as a stream of minute elusive particles which cause a pulsating electrical disturbance. These varying disturbances allow us to see the different frequencies we call "color". All photon frequencies are slowed down when they travel, whether in vacuum, air, glass, or teeth. And those Photons of different energy levels are slowed down to different extents. Red diminishes faster than yellow, green diminishes faster than violet. This uneven loss of spectral colors causes color changes in natural teeth to be very hard to mimic. One very important thing to remember is "when a photon loses all of it's energy, it ceases to exist". There is nothing to see & there is no visible residue or evidence it ever existed. In a natural or artificial tooth this causes a gray or dark area. When the red, green & blue spectral colors reach an individual & equal level of saturation balance in the light wave they are gray. Interproximal grayness is caused by light being diffused to the point of nearly equal components or nearly no energy while the light is reflected off the coping or pontic at the same time. This contrast of light energy makes the interproximal area appear even more gray & colorless. 21

22 Warm Color Visibility Fades With The Addition Of Green To The Light Matched operatory & laboratory lighting enables the Doctor & laboratory to see the same shading #1 #2 #1 Orange lens Illumination in Clear Acrylic represents shade that is seen. #2 Deteriorated fluorescent tubes (increased green in the emitted light ) cause the orange lens to lose warm shade being seen. Spectral Effects On Lighting From Aging + = 10% green added to light from aged bulbs reduces the dark orange to light orange If the light tubes are not matched, the office & the lab will not see the same shade effects. It depends whose lights are the greenest, but one side will see light shades & the other will see darker shades If the laboratory has more green emitted in their lighting, the shade looks good ( more chroma) in the lab. But, you will see more orange than is really there. And then you will send crowns that are too light. The Doctor ask for Fig.1 You send Fig.3, And you get it back for add color. In your lab you see Fig.2 22

23 As Lighting degrades (more Green Emitted) Warm Shading Spectral Is Diminished As the bulbs age, they emit more green. This reduces the red in the shade mix even more. Now you are seeing a low chroma illumination, because the green stops the red photons from being seen. To compensate for the light chroma we add more orange. Now your shades will be too dark. Red & Green Balanced + = 25% green washes out even more warm color As light travels it loses energy (warm colors & lowers value) 19

24 Life Essence Illumination Reference Guide 5000k 90 CRI 2900 Lumens 5000k 90 CRI 2900 Lumens Men cannot produce natural light, but as you can see by the graphs, the Lumiram Corporation has come very close. The bulbs which give the best light have the characteristics of a color rending index of 96 and a temperature of 5000 Kelvin. Chroma k LED 5000k 90 CRI 2900 Lumens 2014 Jim Emmons CDT, FNBC 20

25 Life Essence Illumination Reference Guide 5000k 90 CRI 2200 Lumens 5000k 90 CRI 2900 Lumens 5000k 85 CRI 2200 Lumens Cool White 5000k 90 CRI 2900 Lumens Anything below 91 CRI will Metameres (color) green

26 Life Essence Illumination Reference Guide Incandescent ( becoming Obsolete) 5000k 90 CRI 2900 Lumens Standard Operatory Light Excessive light volume and yellow orange Birthday candle low light volume and excessive yellow & orange Plant Lighting / Fluorescent 5000k 90 CRI 2900 Lumens Anything below 91 CRI will Mesmerize (color) green

27 Introduction To Color In Living Tissue (Teeth) (As the green increases the red diminishes) This section outlines the terminology used to communicate color in the teeth with the addition & subtractive color systems. 27

28 The Order of Natural Spectral Color This natural order of color in light never varies. The red (magenta) is the longest wave in the visible spectrum. Red is also the slowest / weakest of the spectrum, it loses visual presence first. The loss of red illumination causes shades to appear light (low chroma). Red/Green/Blue are primary colors in illumination. (additive color system) Red Orange Yellow Green Blue Violet I added green to the red and you can see the shade cool down and get lighter. All of the shades are made with red & green (Additive color system) 100% Red 100% Green 28 I changed the A,B,C, D shade illumination by altering the red to green relationship, which causes the shade to cool down and get lighter.

29 Hue / Chroma / Value HUE Warmest Coolest Primary Primary Primary CHROMA HIGH Warmer LOW Cooler Perceptions In Color Say the color not the word VALUE Yellow Blue Orange Black Red Green Violet High Low Your right brain tries to say the color but your left insists on reading the word. 100% Color Saturation in Light Equals White/ Colorless Light Many times the color selection is more of an assumption. Primary Color In Living Tissue The Additive Color System 29

30 What makes up this thing called color in light & the language used to talk about it. Terms of Basic Physics of Color in Light Photons: light is made up of millions of a magnetic disturbance causing the particles to oscillate. These particles are called photons & the different oscillations causing us to see different colors. Photons owe their existence to their energy. As they lose energy they cease to exist. When there is no magnetic disturbance (energy) there is no light & no color. A light switch could be called a photon emission controller, when it is on there is energy to the bulbs to make light energy & when it is off (no energy in the bulb) there is no light. Due to the reflective nature of our restorative materials in the past we have only utilized 1/2 of the system of living color (reflective) This brief explanation of the physics of light will give you the necessary reference points to follow what occurs when color in light changes. Fig 1 shows the primary color in light & the result of all color being present in light which is white light. Fig.2 shows the Subtractive system Fig.3 which is the presence of all color being black. Fig.1 Fig.2 Fig.3 Fig.3 is the color bar showing the prismatic separation of color in light. The number markings across the bottom indicate the nanometer wave lengths of the individual spectral colors. I have used these numbers to identify the colors on the prismatic palette. 30 Jim Emmons CDT,FNBC 2012

31 CHROMA VALUE Fig.4 100% % 100% %- The above scenario will progress to 100% photon absence of the spectral color to end up with a black void with no light (photon existence). Fig.4 shows the full spectrum light wave from 100 % illumination to 0% illumination Fig.7 This marks a complete wave length This marks the line of no disturbance This marks the crest & trough of a wave length 3% 7% Fig.6 Fig.6 shows the result of 3% equal spectral color loss in the light & 10% equal spectral color loss in the light wave. It does not take much to reduce the color in light & have the inside of a porcelain crown turn gray. The collective energy of the photons in the light is what we call the shade (oscillatory disturbance), it creates the varied color we see as light transmits across the face of a natural or artificial tooth. Fig.7 The color bar illustrated has a white zone off the red & a black zone off the violet. The white area are there to remind you that as the light is fulfilled with all the warm spectral color it becomes invisible. The black area represents the loss of all light energy, as the color spectrum fades (loses energy) from red to violet. A natural rainbow does not have a clear or black area. Rainbows will repeat the R,O,Y,G,B,V arrangement every time the light is bent 42 degrees. 31

32 Secondary Color Primary Secondary Color shimmers when it is placed beside Another Secondary (complimentary) color. Violet Secondary Orange Secondary Primary Yellow Secondary Primary The Red to Blue junction visually shimmers The black ribbon intensifies our color perception the yellow banners are exactly the same intensity. Black to blue is easy to define 32

33 Perceptions in Color Fig 1 & 2 The red /blue arrows appear to be darker chroma that arrows surrounded by the white trim they are the same chroma. In comparing the black trimmed arrows, they appear more intense. Fig 3 The red & blue arrows that touch appear to have a fuzzy area where they touch. Fig 4 The stars in #4 are exactly the same size. Fig 5 The yellow arrows are the same exact size & chroma. Fig 6 The red letters in both hearts are identical, the blue heart letters appear fuzzy. Fig 1 Fig 5 Fig2 Fuzzy A lot!!!!!!! Fuzzy NOT!!!!!! Smooth Fig 3 Fig 4 Fig 6 Our eyes do not focus on red & blue at the same time 33