Hi, I am 23 years old. My front teeth had this black/brownish stain on the joint between the two. So I consulted a doctor an she did a composite filling on my teeth. Now I feel like it will fall off at any moment, it feels like I’ve lost the strength of my teeth. So my question to you is this: Does composite filling loosen your teeth’s strength drastically? What are the disadvantages of having a composite filling? Thank you.