Where should the thermometer be placed in the mouth for an accurate oral reading?

Placing the thermometer under the tongue, toward the side of the mouth, is the recommended method for obtaining an accurate oral temperature reading. This position allows for better contact with the sublingual area, where blood vessels closely align with the surface, resulting in a more precise measurement. The warmth from the blood vessels in this area reflects the core body temperature more accurately than other positions in the mouth.

Using this technique ensures that the thermometer is not exposed to significant airflow or the colder surfaces of the mouth, which could lead to erroneous readings. Proper placement is crucial for reliable results, and positioning the thermometer toward the side facilitates a tight seal with the lips, preventing any air gaps that might affect the measurement.