This is a very interesting study! It certainly can't hurt! Sorry - I can't seem to make it clicky so if you want to watch the video or read the article, you'll have to c&p!
https://www.ctv.ca/CTVNews/Health/20110211/dental-mouthwash-pregnancy-premature-birth-110211/
Re: Mouthwash may prevent premature birth - LIP
Thanks. Really interesting.
Crest Pro Health is a great alcohol-free mouthwash.