Hi there, technically, all wood dust is hazardous if inhaled. African Teak is no different. It does have a slightly higher toxicity level when inhaled, especially for asthmatics. It's splinters also have a higher risk of infection than a domestic hardwood. However; If the doors are manufactured and finished off-site (not at your home) and they don't need to be cut in any way, as long as they are sealed with a finish, they should be fine. I would just make sure the finish is nice and durable.

http://www.wood-database.com/wood-articles/wood-allergies-and-toxicity/

I hope this helps. Good Luck!

The Couture Floor Company

Thankyou