Which corps is responsible for preventing and controlling disease, as well as providing oral surgery and hygiene?

The correct answer is the Dental corps, as this branch specifically focuses on oral health, which includes the prevention and management of dental diseases, oral surgery, and oral hygiene practices. Members of the Dental corps are trained to diagnose and treat conditions related to the teeth, gums, and mouth. They play a crucial role in maintaining oral health standards and contribute to overall public health efforts by preventing dental disease, which can have systemic effects on patients' health.

While the Medical service corps, Nurse corps, and Medical corps do provide essential health services, their primary areas of focus are broader and encompass a wider range of healthcare delivery. The Medical service corps provides support services in health care management and administrative roles, the Nurse corps specializes in nursing care and patient education, and the Medical corps emphasizes treatment and prevention of general medical issues rather than specifically addressing oral health. Hence, the Dental corps is uniquely positioned to handle the responsibilities outlined in the question.