 Hello everyone, welcome back to a new session on dentistry and more Today's session. I'll be demonstrating you a shade selection by Vita to get 3d master It's a commonly used Shade selection tool in most of the dental clinics So it's very easy method Commonly there is no much difficulty in selecting a particular shade all we need to Do the matching with any of these Shades with our natural tooth and do the selection But it's good to know that there is a theory behind this that is based on the property of color That's how we do the proper selection by a three-step method. So in today's video, I'll be explaining about the three-step method of Shade selection based on the properties of color. So if you like my video To subscribe for more dentistry related videos So the three steps involves Based on the value Chroma and hue. So these are Properties of color. So before going into detail about this 3d master guide Let's see what is value. What is chroma and what is hue? So the value is nothing but the lightness whether the tooth is lighter or darker so can see here in The tooth guide we have five values that is one two three Four and five. These are the value numbers So it is based on the lightness So the one is very lighter and the five is darker So it is a lightness whether the tooth is lighter or darker. That is the first property one two three four five so the second property is Chroma or the saturation So can see that As you go downward the saturation increases as you go downwards the saturation increases in all sectors so The least saturated one is the top one and the most saturated one is the bottom one in each Value okay, so it is one one point five two two point five three So the least one is always at the top of the Shade guide and the most saturated is at the bottom part. That is three Okay, the next one is a hue property of hue It is nothing but the wavelength of a color it based on the wavelength of color So in the visible light spectrum, we know the various colors what a human can see So it is denoted here as L M and R So L is nothing but yellow. M is a middle hue and Red R is a red. So it is Yellow is to red color. Okay, so one two three four five are the value It based on the lightness or the dark Dark shade Towards the down it is the chroma or saturation. It is the intensity of hue as you come downward It is the most saturated tooth. You can see at the bottom level and the third property is hue or wavelength That is color. So you have yellowish and reddish section It is denoted as L R and M. M is a middle hue. It is a middle part of this Spectrum so you can see that I have mentioned it here As you go from left to right, it has become yellow to red. Just like here That's becoming red. Not exactly red, but the yellowish and the reddish wavelength and the middle part is middle hue So each value that is in each value sector, we have one representative tooth. This is one sample tooth This is the sample tooth of value one. This is value two. This is value three. This is value four This is value five Select the shade of natural tooth of a patient. It is based on value Chroma and hue. So hue is nothing but the yellow to red color This is mentioned here. L M R And the saturation level you can see it. I can show you The saturation level is mentioned here. You can see if I spread it out, you can see You can see I hope you can see one Two three can see this bottom one two three of the saturation. So similarly in light light and Red section also it is there 1.5 and 2.5. That is saturation can see 1.5 and 2.5. It is saturation chroma values Okay, so these are the three properties of color based on these three properties. We select the shade so the first step is When we have a natural tooth to select we take this and We take a gross selection based on the value we keep this 3d guide on the patient's face and select a Gross selection so we can see whether the tooth is near to the color of 1 m 2 m 3 m 4 m or 5 mm. It is based on the lightness can just see whether it is Corresponding to any of these color. So suppose you take you get the value 2 That is 2 m you get the value 2 m. So you have selected Your natural tooth is close to The value 2 that is first property of color. So this is sample tooth. So this we keep for Reference, so we have selected 2 So next what we have to do is we have to go for the chroma So now we take this Then we find it out we spread it out then we see which is coming Closer to the natural tooth in saturation. So we can see which is coming closer to the saturation So we have three that is one two and three saturation Saturation level suppose we take one that is saturation 2 m1. We are selected 2 m1 is a saturation level That is the one is a saturation level or chroma value for our natural tooth. So our value is 2 and Chroma value is 1 Okay, so we have selected the value 2 and chroma value is 1 that is very lighter in Category so next we have to select whether it is coming to the Yellow region or right region. So we have to Select these two We have to first see whether It's coming. So this is a lighter or so since we are taking the one we have this 1.51 that is 1.5. I hope you can see this To we don't need to see because one we have taken You can see yes 1.5. So this is a yellowish side Considering hue and this is on the Reddish side. Okay, I'm considering hue So since we are taken one So we have to go for yellow or red Yes So this is red. So this is we are not checking because our chroma value is 1 So we have to see whether it is coming to yellow side or red side. So we are selecting The red side the tooth is natural tooth is coming to red side. Just like an example We're taking this on the red side. So we got our hue value that is on the red side Okay, so Don't get confused with the value the value first I Mentioned it is 2 So the hue score I can say hue score is on the red side So we got finally our tooth is to our 1.5. So that is this tooth. Okay, so to our 1.5. So this tooth Okay, so this is a tooth to our 1.5. This is our final selection. Okay, so you might have a few doubts because There is Only three teeth Respect to the value one and three teeth with respect to value five. Actually one is missing here. I'm sorry for that Only one M2 and one M1 is there So there are supposed to be three teeth here also three teeth Suppose we select the value number one or five one or five We don't have The yellow or right hue options. We have to select one out of these three one out of these three So it all comes under middle hue category. The hue will be middle hue There is no yellow or there is no red category So that is for value one or five We are selecting our gross selection the first step of selection the value we are selecting we mass the representative tooth one M1 One M2, sorry one M2 or five M2. So if our tooth the natural tooth is corresponding to the value five or one that is one M2 or five M2 We have to select one M these three That is automatically become the particular tooth because we don't have to go for The yellow or red because There is no yellow or red hue categories for one and five So next we are to go for the saturation. So we need to select one among these three So we need to select either one M1 one M2 or one M3 first we select the value then we go for the Saturation or chroma value. There is no hue value here similarly If we are selecting our Value score two three or four That is our value two three or four and Our chroma score is three that is Fully saturated or most saturated Here also we don't have a yellow or red Hue section we directly need to select this tooth so we are Selecting first our value that is two three or four then we are going for chroma value so we will be selecting they will be taking this and will be Checking the chroma value And if we get this chroma three that is the this tooth. This is chroma three. You can see This is chroma three the bottom three that is chroma value That is saturation So we have to select this only that is two M3 will be our final selection because it doesn't have a yellow or red tooth but for the Chroma or saturation score one or two has on either side yellow or Right variant that is one point two point five two point five one point five one point five So this one point five is the red variant That is our score was Chroma score was one So that's how we select Our shade of natural tooth first we have to see the value Then the chroma then the hue Hope you understand it. It is very easy technique Even if we don't know the theory There's no complication. We can just check the each tooth with our natural tooth and Select the particular shade But it's good to know that the theory behind The shade selection that is three-step theory based on the properties of color Hope you like the video do subscribe for more dentistry related videos. Thank you