She shimmies like a jelly on a plate.
My mama wanted to know last night,
What makes the boys think Kate's so nice.
(Fats Waller, 1931)
As I try to incorporate a nightly brushing and flossing into my post-bath grooming routine, I've been reading up on vintage dental advice. Only to find that the pre-fluoride world was a frightening place... Did you know that in 1940 the average 25-year-old had already lost four teeth? The average 30-year-old was missing seven teeth, and by 40 - ten. At 36, then, I'd probably have several gaps in my smile. If I was lucky, maybe some artificial teeth to fill the most noticeable gaps. That's one of the uglier realities about life in the '40s.
Commercially-prepared dentifrices had been around for awhile. Tooth powders, toothpastes, liquid tooth preparations. Many folks probably still used good ol' baking soda. Lots of options. Beauty experts everywhere seemed to agree, though, that the right technique for brushing mattered more than the type of dentifrice found in your medicine cabinet. In a December 3, 1940 column, the Milwaukee Sentinel's Ida Jean Kain urged adults to quit the "rotary method" they'd learned as children.
Place the brush on the gums at an angle of about 45 degrees and brush with a “shimmy motion,” down from the upper teeth, and up from the lowers. Repeat the strokes two or three times until you feel that you have had a thorough brushing on the outside, then transfer your activities to the inside of your teeth and repeat...
It will really pay you to take the time to learn and practice the correct brushing technique, for we are given to understand that the old rotary brushing not only fails to clean the crevices between the teeth, but that it may actually cause the gums to recede from the teeth.
The Evening Independent's Howard Blakeslee tried in 1941 to appeal to his readers' interest in dance by describing the proper brushing technique as a rhumba:
The toothbrush rhumba is a side-to-side sway of the bristles while the point of the bristle stands still.
The sway is produced by holding the brush handle firmly in the fist, not in the fingers, to give downward pressure against the teeth. The fist moves from side to side, as in the motion which scrapes enamel, but not so far.
While the bristles are doing the rhumba, the brush is moved quite slowly up and down the surface of the teeth. The up movement stops at the first slight contact with the gums, for that is the place where the enamel erosion is dangerous.
Twice up and twice down is enough with this rhumba, say dental authorities.
Dental floss, a stiff-bristled toothbrush ("the stiffest you can find"), mouthwash --- these were just a few of the oft-mentioned accessories that would serve a woman well if she aspired to "personal daintiness." Brushing after every meal was ideal, but - if done properly - twice a day would suffice. Some experts also recommended massaging the gums with your fingers and cleaning the tongue:
It is surprising how many men and women who take meticulous care of their teeth will neglect their tongues… A coated tongue is a dirty tongue…
So brush your teeth, say your prayers, brush your hair, stick your tongue out at yourself in the mirror and scour it as far back as you can. You can use a piece of cotton or a brush which you keep especially for this purpose.
Which move do you and your toothbrush do when you hit the dance floor each night: the shimmy or the rhumba?

