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 |

Fast, Easy, Game-Changing:

SEE THE CalculatorS in action!

Ready to take your treatment planning to the next level?

All 8 calculators are designed to simplify orthodontic treatment planning, helping you make precise, math-driven decisions with ease.

TRY FREE FOR 7 DAYS

Explore our full video series for audio-guided case planning demos.

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

TRY FREE FOR 1 WEEK

SUPER CALCULATOR RECEIVES HONOURABLE MENTION FROM AAO 🏆

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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 🦷➗.

SPACE MAINTENANCE CALCULATOR MAKES ITS DEBUT 🦷

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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!

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 ortho calculator 😀

I’d like to thank you for visiting this website and trying out the 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.