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Dr. D. George Knecht - A "Needle Dentist" from Allentown, Pennsylvania

Theodore P Croll1, Ben Z Swanson

  • 1Clinic Director, Cavity Busters Doylestown, Doylestown, PA Clinical Professor, Pediatric Dentistry Case Western Reserve School of Dental Medicine.

Journal of the History of Dentistry
|July 24, 2025
PubMed

Keywords:
GimmicksJohn Blaul & SonsMartha Washington sewing needlesprinted promotions

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The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
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Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.