If you lookup the solubility table, you will be able to compare the solubility which will increase in an acidic environment which frequently occurs on teeth after consuming carbohydrate rich food and drink. www.supertooth.info may also help but there is more info in the pipeline.
Calcium salts are relatively insoluble in water and not hydrophilic though can be wetted which makes small particles less than 0.2mm in a paste that can be forced inside pits and fissures under pressure from a chewable delivery device, a potential simple sealant that anyone can chew before eating or brushing to block food being trapped as the wetted particles tend to bond together and to tooth similar to calculus that dentists scale and clean from teeth,
This could develop into sealant technology with Glass models of a fissure in STEM education and current tooth care for whole populations to prevent almost all global tooth decay.