INBDE Integrated National Board Dental Exam Prep Set 2

Answer: D - Tooth trauma that has no injury in the supporting structures are concussions. There is no evidence of displacement or mobility of tooth or teeth upon examination; however, the tooth will be tender. If the concussion is to primary teeth, there may be infection. There is minimal risk of pupal necrosis. There is an increased chance of pulpal necrosis with closed apices if teeth are permanent.