Teeth double reflection in mirrors
Yesterday I saw my reflection in a mirror and noticed that my teeth had two images on the mirror, and the rest of my face did not. I tried in different mirrors, and the result was the same. At first, I thought it could be the effect of two surfaces of the mirror, and in that case other body parts would also reflect "doubled" when looked close enough in the mirror. However, that was not the case, only the teeth caused that certain pattern.
So, I tried to do the same thing with white objects, and the result is that white objects cause the effect of double reflection. Even the white parts of objects that are almost entirely black or blue, for example, have a double reflection.
Would the cause of this effect be a re-reflection by the white surfaces?
Thank you very much!