Related Experiment Video
Updated: Aug 15, 2026

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children
Published on: December 31, 2017
[Oral hygiene in university students]
C R Silva-Netto1, M F Silva, S O Petenusci
1Faculdade de Odontologia de Ribeirão Preto, USP.
Abstract:
The family income of students entering the University suggests that they should be aware of basic rules of oral hygiene. Thus, oral hygiene was evaluated in a study conducted on 336 1st-year students enrolled in the Pharmacy and Dentistry Course of Ribeirão Preto, USP. The results showed that 42% of the students consult a dentist twice a year; the frequency of tooth brushing was four times a day, with no difference between the use of soft (48%) and medium (49%) brushes, and brushing time was 1 to 5 min. The students use dental floss (87%) and rinse their mouth with Cepacol (37%), and females brush their tongue at higher frequency (70%). Fifty-two percent of the students reported the occurrence of gingival bleeding when they brush their teeth.
Related Concept Videos
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Suctioning the Oropharyngeal Airway
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
The Oral Microbiota
Development of the Oral Microbiota

