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Acostak1 Acostak1
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6 years ago
The first dental engine with functioning handpiece, motor, and foot treadle was invented by Horace Hayden.
 a. True
  b. False
 Indicate whether the statement is true or false
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somedaysundaysomedaysunday
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6 years ago
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Acostak1 Author
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6 years ago
This helped my grade so much Perfect
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This site is awesome
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Good timing, thanks!
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