Given the following details, which vitamin is crucial for the patient's gum health during her orthodontic treatment? Attribute Details Age 16 Sex F Height 5'7" Weight 145 B/P 111/76 Chief Complaint "I'm unhappy with the way my teeth look. I am about to get braces. My orthodontist told me to have my teeth cleaned and cavities filled before he will put the braces on my teeth." Medical History The patient has asthma. Her last attack was 8 months ago. Current Medications Albuterol prn Dental History The patient has not been seen for 2 years. At her last appointment her teeth were cleaned and decay was diagnosed as a small DO on #29. Social History The patient is a student at the local high school. She plays trumpet in the school band.