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: Dental
In treating mentally retarded children, generally finds
that they: 
Select and explain. 
A. Respond inconsistently, B. Can be controlled in ways similar to normal children, C. Respond similarly to normal children of the same mental age, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Children with intellectual disability may have a higher incidence of poor oral hygiene, gingivitis, malocclusion, and untreated caries. As the severity of intellectual disability increases, typical oral signs of clenching, bruxing, drooling, pica,  trauma,  missing  teeth,  and  self-injurious  behaviors increase.
Providing dental treatment for a person with intellectual disability requires adjusting to social, intellectual, and emotional delays. A short attention span, restlessness, hyperactivity, and erratic emotional behavior may characterize patients with intellectual disability undergoing dental care. The dentist should assess the degree of intellectual disability by consulting the patient’s physician for frequent medical assessment and coordinate care when appropriate.