The Dynarex Tongue Depressors are precision cut and have polished smooth edges for consistent safety and comfort. In addition these tongue depressors are made from sturdy birch wood which deters splintering and breaking.USED BY MEDICAL PROFESSIONALS: Dynarex Tongue Depressors are utilized by medical professionals to facilitate an oral airway in the mouth while depressing the tongue. Doing so will reveal any infections or rashes that may be present in the mouth and throat.