Placing an implant in the central incisor areas sometimes seems to be complicated by the incisive foramen. Do you have to avoid the incisive foramen? What happens when you violate it with an implant?
I don't think the consequences are as grave as violating the mental foramen or the inferior alveolar nerve. Patients will complain of a burning sensation in the area (maxillary anterior) and some pain. The symptoms eventually goes away in a few weeks. But you have to remember that the incisive foramen is a space occupied by soft tissue and not by bone. If you place an implant in the foramen, the portion of the implant exposed to the foramen will not be in contact with bone.