Jaw bone biomechanical 3D model

Hello there,
Does anybody have any experience or know any scientific publication about validation/use of 3D Model in oral and maxillo facial surgery? More specific, I am trying to evaluate the biomechanical characteristics of the 3D Model: strenght, deflection, withstand…
I do think 3D model printed with formlabs are better than synbone skull model that are commonly used for biomechanical tests and publications in oral and maxillo facial surgery…

thanks everybody!!

Oral and maxillo facial surgeon from BRAZIL!

Hey there,

Most FORMLABS Materials claims to be isotropic materials after curing process, so basically if you look in material datasheet, you will find the mechanical properties (stress / strain), I dont know for sure if Formlabs perform a mechanical test on those materials in a Lab, but there is a few values that are usable in a FEA Simulation.

Otherwise, Autodesk put an online probed material database with netfabb and Nastran Solver, and the values are pretty acurate, but its iimited. [https://search.netfabb.com/#!/] Registration is need it.

But this is the first piece of the puzzle, First you need a proper material that have structural behavior like bone ( doesn’t exist) so the calculation may be close to the human bone, the bone have a special lattice arrange inside.

So, a better choice is try to get tough, durable, or Dental LT material, once you got the mechanical properties of the material, you have to use this data inisde a FEA Simulation Software ( Nastran is a good call) since performing this calculations by hand and due to the complexity of a jawbone, will be pretty much imposible to achieve.

Inside the FEA software you may use the data from Formlabs, with the material, itself and defining boundary conditions; forces, constrains, an restrictions of the analysis,

This data is useful if you analysis is in the linear region, for a non linear anlysis or time dependent you will need mechanical properties defined for the non linear region, or a curve of stress / strain describing the behavior.

For explame: a linear analysis will be if the part or element can stand for a specific load inside the elastic limit of the material?, what is the maximum weight or force applied beforeir bends? or will strain and deform permanently?

An expample of a non linear analisis will be If the part cant stand for a fatigue cycle? how many cycles would stand before it breakes, will stand forever?

Generally Speaking FEA Software can help you to predict failure in parts, specially good when having acurate material properties, Im uploading a couple pictures, of a part simulated and broken in a laboratory test.

Hope It Helps, Good luck with your parts!

1 Like