OP is the best thing you can do for your teeth and gums even without the Q10. If you have gum rescission or disease, the Q10 will speed things up for that as well. As you say, a good 1-2 punch.
Since your son is probably not Q10 deficient (being young) I'm not sure if it will help. There are other things that might. When I started taking Astaxanthin I was already up to a 250 powered reading glasses. After taking it steadily I dropped all the way down to between 150-175. For some reason it started worsening right before I took the Q10 with the OP which the Q10 helped dramatically with. This is one reason i thought I was deficient in Q10 despite the daily supplements.
On the other hand if you could get your son oil pulling, he'll probably never need a dentist. So try that first..lol
Be sure to write your own report of what you find when you try get your Vitols. For best results start with 1/2 to 3/4 of the dropper full (the full dropper is recommended for 200 mgs but again you'll get much better absorption through OP with the oil base and 20 minute dwell time).