Tongue depressors are used to hold the tongue down for oral examinations in medical, dental, and veterinary practices, allowing for better views of the mouth and throat to check for sores, infections, or tonsil conditions. 

Oral Examinations:

To get a clear view of the mouth, throat, tonsils, and palate to check for any abnormalities like infections or sores.

Gag Reflex Assessment:

To stimulate the back of the tongue to test the gag reflex during examinations.

Surgical Procedures:

To provide stable support for delicate tissues and protect surgeons from accidental needlesticks.

Sleep Apnea Screening:

In dental and medical practices, they help in the Mallampati assessment to evaluate the oropharyngeal anatomy and predict potential airway issues.