This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
The teeth should be thoroughly cleaned with a toothbrush each morning after breakfast. Some persons clean the teeth after every meal, which is a most excellent habit. By cleaning the teeth regularly, no washes are necessary, though occasionally castile soap will be beneficial. Should tartar collect in such quantity as to be difficult to remove the dentist should be consulted. Should the teeth begin to decay they should be immediately cared for by the dentist. Powdered charcoal easily removes stains and makes the teeth white.
The following also is an excellent wash for the teeth:
Tincture of myrrh, 1 ounce; compound tincture of cinchona, 1 ounce; water, 1 ounce. Put five drops on the toothbrush, dip the brush then in water, and wash the teeth.
Keep the teeth clean. They look badly if not perfectly white and clean.