It is very easy now to convert yellow teeth to
white teeth, we have just tried to make it by some steps that is given in
this example. It is very interesting because we will do this work on the
real picture so I have capture here a lady teach picture to modify.
Note: This example is not for dental doctors.
Open a File: Inset any picture to modify but I have here a teeth picture.
Selection: We have to make selection a area that has to change colored so choose Polygonal Lasso Tool (L key) and make selection as I have done here.
Desaturate: Go to Image Menu > Adjustment < Desaturate, your image will look like this.
Brightness/Contrast: To make shine teeth go to Image Menu > Adjustment < Brightness/Contrast and use setting as given below.
Your final image will look like this.
Recommend the tutorial