S.M.
Hi A. -
I am a mother of two children, the second of which has had significant reflux. I had not thought about it until I saw your posting, but my daughter has increased her reflux during the times of teething.
Physiological this does make sense. While the baby is teething, more saliva is produced (obvious by the drooling) and that in turns produces more acid.
I would say this is just one of those things we can chaulk up to the phrase "this too shall pass." One I use frequently in parenting.
However, if your child continues with increased 'spitting' after the teeth have broke through the gum line, you probably want to check with your Doctor.
Hope this helps.
S.