I had a bone graft about 3 months ago. Since the bone graft my teeth have moved. Can a bone graft cause your teeth to move?

A Tooth was extracted and bone graft done at the same time. Since then about 30 days ago I noticed my bottom front Teeth have moved, (the teeth were already crowded) crowding and causing one tooth to move in front of the other. The tooth on bottom front is causing the top front tooth to start sticking out. The front of bottom tooth touches and is pushing against the top front tooth from behind it. Can a Bone Graft cause teeth to move?