"The American Academy of Pediatric Dentistry (AAPD) encourages policy makers, public health and education officials, and the dental community to recognize that poor oral health can affect a child’s ability to learn. An oral examination prior to matriculation into school could improve school readiness by providing a timely opportunity for diagnosis and treatment of oral conditions."
The above quote is from the AAPD’s Policy on Mandatory School-entrance Oral Health Examinations.
Unfortunately, only a handful of states to date have adopted such legislation.
AAPD’s Policy on Mandatory School-entrance Oral Health Examinations
AAPD’s Policy on Oral Health Care Programs for Infants, Children, and Adolescents