This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Self injury most likely caused after extraction in children is 
Select and explain. 
A. Inadvertent lip biting after anesthesia, B. Chemical burn, C. Permanent palsy, D. Trismus
A: Inadvertent lip biting after anesthesia
Answer: A: Inadvertent lip biting after anesthesia 
Explanation: Inadvertent lip biting after inferior alveolar nerve block is most commonly seen in children after extraction.
This self-injury mostly occurs due to dentist fail to mention/provide important instructions to child/ their parents that he/she should not eat anything till effect of anesthesia completely wears off as it leads to unknowing/ Inadvertent lip biting during eating.
Sometimes this also happens if child/parents fail to follow the instructions mentioned by dentist.