The unit-number filing system is most commonly used in _______

Which of the following conditions or circumstances would contraindicate necessary dental radiographs for the patient?

A) Pregnancy B) Hearing or visual impairment C) Wheelchair confinement D) Recent dental radiographs at another practice

Surgical removal of the thyroid gland is called:

A) thyroidotomy B) thymectomy C) thyroidectomy D) thymotomy