Ortho Calculator

Mathematics of the mouth

NOW AVAILABLE ON THE APPLE APP STORE |

iPhone & iPad compatible |

NOW AVAILABLE ON THE APPLE APP STORE | iPhone & iPad compatible |

Try Ortho Calculator FREE for 1 Week – Download Now!

Unlock full access to all 8 ortho calculators:

  • Maxillary Space Calculator

  • Mandibular Space Calculator

  • Expansion Calculator

  • Extraction Calculator

  • Space Maintenance Calculator

  • Surgical Expansion Calculator

  • Super Calculator

  • Treatment Plan Calculator (NEW)

This website was created in response to my frustration with the amount of eyeballing it 👀 we do in orthodontics.

We have all heard the saying “orthodontics is a science and an art”

I like to think of orthodontics as mostly science 🧑‍🔬 with a touch of art in the finishing stages 🎨. Better yet, I like to think of orthodontics as mathematics of the mouth 🦷➗.

SUPER CALCULATOR RECEIVES HONOURABLE MENTION FROM AAO 🏆

SUPER CALCULATOR RECEIVES HONOURABLE MENTION FROM AAO 🏆

The goal is of ortho calculator is not to teach you new things

Originally, I created these calculators for myself 🤓. I felt I was juggling too many variables in my head 🤯 while I was treatment planning my cases and wanted to find a better way to organize my thoughts 💡. As these calculators evolved, I began to consider that others may also benefit from the use of my calculators—especially those early in their orthodontic careers 👩‍⚕️.

My calculators are an amalgamation and reworking of well-known orthodontic concepts 📚. There are many resources already available for space analysis, expansion requirements, and determining extraction patterns 🔍✂️. However, my calculators allow you to do the math in a dynamic and user-friendly fashion where you can continue to run the numbers 🧮 until everything balances out ⚖️ in a way that aligns with your personal treatment philosophy 🧠.

That being said, I hope you will come to view this website as a useful tool 🛠️ that boosts your confidence 💪 when treatment planning your cases, and that you will find comfort in knowing that the math behind your treatment plan checks out ✅.

Try out the calculators!

If this is your first time using the calculators, I’d recommend clicking the headers at the top of this site or the name of the calculator below to learn about the philosophy and intended use of each calculator.

The calculators can all be used independently or together in sequence. I recommend the following order:

1. Expansion Calculator: determine if transverse coordination is necessary and calculate the amount of space that can be gained by expansion

2. Space Calculator: determine space requirements in each arch based on planned incisor position, then explore possible ways to create space and resolve tooth size arch length discrepancies (TSALD)

3. Extraction Calculator: determine the ideal extraction pattern to resolve a TSALD and/or optimize A-P coordination of the arches

Thank you for checking out my website 😀

I’d like to thank you for visiting my website and trying out my calculators. I’m always open to feedback and constructive criticism if you have suggestions as to how this site can be improved.

Lastly, thank you to all of my instructors at the University of Toronto who have contributed to my learning. A special thanks to Dr. Vendittelli for teaching me the math of orthodontics, and to Dr. Mair for proving to me that orthodontics is a science.