Sorry, missed this one.

I am not doing anything in particular as regards supplements but saw the info on vitamin C and baking soda so may try that along with rinsing. I already avoid toothpaste with flouride and now will avoid those with glycerin as if I miss a spot of bacteria I don't want to give it a fice star penthouse with rent control :P

I have one carie that is not changing massively but my teeth are less sensitive and a little nick where I pull staples is no longer there.

I don't know about bio available calcium but you must always balance calcium with magnesium. Over ingestion of one can deplete levels of the other. Imagine having a container and trying to fit the maximum of calcium boxes into it. The more boxes of calcium you can get in the less boxes of magnesium. The container stays the same size.

On a commercial basis I found this product and article. Beware, it's a dental site!
http://www.dentrek.com/docViewer.asp?x_documentID=123

Calcium supplements typically are absorbed better when eaten with meals (as your stomach is producing acid). Moreover, research indicates that taking calcium with meals may reduce the risk of kidney stones and supplementing with calcium between meals might actually increase the risk.

Personally, I am going away from supplements as I am trying to get my bosy to run on the food as it was designed to. I am using a programme of cleanses including pulling to achieve this.

There are also Calcium inhibitors which are best removed from your diet first. Things that inhibit the absorption of calcium are

Coffee, soft drinks and diuretics
Excesses of protein, especially meat
Refined Sugar or too much of any concentrated sweetener or sweet flavoured food
Alcohol, cannabis, cigarettes and other intoxicants
Too little or too much exercise
Excess salt
The Solanum (deadly nightshade) genus of vegetables - tomatoes in particular, but also potatoes, aubergines, peppers, courgettes - they all contain the calcium inhibitor solanine.

Table of food calcium sources

Food Source (100g portions) Calcium in Milligrams
Seaweeds
Hijiki 1,400,Wakame 1,300
Kelp 1,099 Kombu 800

Hard cheese 682 (low in magnesium) Dried Wheatgrass or Barleygrass 514
Sardines 443 Agar-Agar 400
Nori 260 Almonds 233
Amaranth grain 222 Hazelnuts 209
Parsley 203 Turnip greens 191
Brazil nuts 186 Sunflower seeds 174
Watercress 151 Chick peas 150
Quinoa 141 Pistachio nuts 135
Pinto beans 135 Kale 134
Spirulina 131 Yoghurt 121 (low in Mg)
Milk 119 (low in Mg) Sesame seeds 110
Chinese cabbage 106 Tofu 100
Walnuts 99 Okra 82
Salmon 79 Cottage cheese 60 (low in Mg)
Eggs 56 Brown rice 33
Chicken 11 Mackerel 5

I think [B]Kale is good[/B]!

Some details on elemental calcium which is what determines your level of need, but no mention of magnesium.
http://www.goaskalice.columbia.edu/2480.html

Foods high in magnesium include brown rice, fish, bananas, tofu, blackstrap molasses, seafood and avocados and I hear some people just bathe in Epsom Salts .

The recommended dosage of magnesium is 350 to 750 mg per day.

Vitamin B-6 increases the amount of magnesium that can be absorbed by cells. High doses of B-6 can be harmful, however. Vitamin C being an acid assists absorbtion also.
There are some doctors who tell you not to take Calcium and Magnesium supplements with food (as opposed to the general advice). This is something to do with occassional binding with other compounds to make insoluble salts which then waste the supplement.