question: Hello doctor,Three days ago, I fell on my face and cracked my right front tooth right in the middle, horizontally. You cannot see the crack with your bare eyes, but if you shine a light from the back of my tooth, you will see it correctly. It goes from the right to the left, and it stops two millimeters before the next tooth. I was scared, so I asked many dentists before going to an actual appointment myself.They said it was fine, that it is only on the outer layer. Then, I went to an actual dentist myself, and they did an X-ray test on it. Nothing appeared, and said I would be fine, but gave me no further details. I was still left wondering, is there any way the rest of the tooth will fall out eventually because it is very slightly sensitive to change in temperature.