A dentist asking a nervous patient would she like gas, she retorts no she doesn't want him poking around in the dark.… https://www.rawpixel.com/image/13997663/image-cartoon-face-personFree Image from public domain licenseA dentist giving John Bull a penny after extracting a tooth; representing the effects of income tax on Great Britain. Wood… https://www.rawpixel.com/image/13977670/image-cartoon-face-personFree Image from public domain licenseWashington, D.C. Preparing sterile instruments for use in the dental checkups held yearly at Woodrow Wilson High School.… https://www.rawpixel.com/image/12338882/image-face-paper-personFree Image from public domain licenseDental surgical instruments. Coloured lithograph by Lemercier, Bernard after Leveille. https://www.rawpixel.com/image/14018704/image-cartoon-face-handFree Image from public domain license