Dave, there's also xylitol spray and candy available online. I've tried both and while they're no great shakes taste wise, I have the impression that the xylitol is helping. The candy is called Sparx and the spray is Rain Spry oral mist spray. Other than those I chew Trident Xtra care like you.

David 2
SCC of occult origin 1/09 (age 55)| Stage III TXN1M0 | HPV 16+, non-smoker, moderate drinker | Modified radical neck dissection 3/09 | 31 days IMRT finished 6/09 | Hit 15 years all clear in 6/24 | Radiation Fibrosis Syndrome kicked in a few years after treatment and has been progressing since | Prostate cancer diagnosis 10/18