Here is a worksheet on the Greek word roots dont and odont/o. If you’ve ever worn braces or needed treatment for gum disease (i.e. with an orthodontist or periodontist), you will recognize right away that this productive root means both tooth and teeth.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.