Oral anatomy for intubation
Full visibility of tonsils, uvula and soft palate.
Visibility of hard and soft palate, upper portion of tonsils and uvula.
Soft and hard palate, and base of uvula are visible.
Only hard palate visible.
Note: A high Mallampati score (class 4) is associated with more difficult intubation, and a higher incidence of sleep apnea.