Dentists have been saying this for years, but a recent Japanese study only confirms that there are subtle, but significant changes after even 2-3 years of CPAP use. The authors observed a reduction in the prominence of the upper and lower jaws. Not too unexpected, since constant pressure on the jaws can cause dental changes. Here’s an article that references the paper.
With every great treatment option, there will always be certain side effects. These changes are so small, that there’s no proof to date that it makes any clinical difference. It was also a 2-3 year study. Long term studies are definitely needed.
For those of you on long-term CPAP, have you noticed any changes to your bite?