Is charcoal powder safe to use for teeth whitening?

You can correct it up to a point, you need to shave more of the tooth and if you shave too much you might actually hit a nerve. There are cases where we need to shave a significant amount and we may have to do a root canal treatment. That might sound extreme but consider other methods for extracting teeth for braces or for false teeth, maybe it won’t seem extreme after all. Perhaps it just needs a bit more work to achieve the desired results.

I would say the cost can vary a lot and it really depends on the materials that are being used, and even the brand. Because certain brands are more well-researched and it depends on what you want. It doesn’t mean that the brands that are less researched are not good. It depends on what personality type you are as well. Do you want something that is new, as in, it might have new technology, or do you want something that has been used for the past 20 years with a lot of research papers to support it?