What woods are safe to use as teeth cleaning sticks?

I recently watched a video with Doug Simons, where he shows how to clean your teeth with a twig.  I am wondering what local woods would be safe to use. My two most prevalent options are noni (morinda citrifolia) and tangen tangen (Leucaena leucocephala).  Does anyone know if either of these would be ok?  Many thanks!!

I have read that one of the European explorers met a certain tribe of Native Americans and was amazed at the quality their dental hygeine. It was revealed that they did this by using dogwood twigs, but the book also stated the practice seemed to cause issues with gum recession. It did not give any more specifics.

I like to chew on a clove buds, though I don't know how clean this gets my teeth.

The traditional wood is miswak.

This thread also mentions hazel and juniper:

https://permies.com/t/43616/personal-care/purity/toothstick-Miswak-Sewak

This one offers several choices from neem, elm, sugarcane, corn stalks, peach, oak, sassafras, avocado, etc.

https://permies.com/t/6508/personal-care/purity/natural-toothbrush

Thank you for the suggestions and links!  I've tried using the tangen tangen twigs so far and it seems to work well.  I know the leaves are edible so I think the wood should be safe.  Avocado we also have on the island, I'll try that too!