We're sorry to hear of your problems.

As an initial reply, we're unfamiliar with a suggested causal relationship between the use of a sonic toothbrush and cerebrovascular accidents (stroke).

The first places we thought of as potential resources for information were:
The FDA (
PubMed (, the most complete database of abstracts for published medical research.

We searched both websites to no avail.

As we continued our web search, we did stumble across a comment on this page where the poster suggests that possibly the vigorous action of a powered toothbrush (any type) might overstimulate persons with "compromised intracranial dynamics".

The assumption here by us (dentists, not physicians) is that the phrase "compromised intracranial dynamics" might include a person predisposed for a stroke (we don't really know).

Best of luck with your recovery.

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