Yes to the best of my knowledge a good balanced diet should be all they need,for most of them that's true.
Just like us no 2 are created equal, so some may need a little extra now and then. Weather it be from an illness or injury, to stress or pregnancy, some will need a boost.
For those that breed or have multiples it's just as well to treat them all with a little extra. Once you've seen one go through teeth problems you tend to be a little over protective.
Just remember too much is no good either.I work it out by weight with what ever the directions are on the bottles.
Thanks Debbie again, the way now I am using to against calcium deficiency is feed on Animax Pellets by the ratio 1 : 5 regluar pellets (I don't know rather your side have this or not, it's something like the Calf Manna), it works good and normally the teeth can get back to orange in colour by around 1 to 2 months.
Once again, for Vit-C, do you think that feeding some Rose Hip as snacks can help?? I saw quite a lot of pet owners agree that Rose Hip can provide some Vit-C to Chins.