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: Pediatrics
To avoid displacement of permanent teeth, finger sucking should be terminated by – 
Select and explain. 
A. 8 years, B. 5 years, C. 3 years, D. 2 years
A: 8 years
Answer: A: 8 years 
Explanation: The earlier the habit of digit sucking is discontinued after the eruption of the permanent maxillary incisors (7-8 yr), the greater the likehood that there will be lessening effect on the dentition.