hypocalcification (′hī·pō′kal·sə·fə′kā·shən) (medicine) Reduction of normal amounts of mineral salts in calcified tissue.
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Enamel, when not calcified enough (hypocalcification or hypoplasia) has a yellowish or orange colour. Usually the dentist confirms it. When enamel is not well calcified, it can get decayed more easily (cavities).
Please.. Don't use baking soda when you have the white spots on your teeth - I did and they stayed with me ALL day... It was embarrassing! So, Please, don't even try when you have them occurring. I have also used it to whiten my teeth later in the day for the spots to only come back the next morning. I've looked into this to find a couple of things that could be happening. They say - If you are just noticing them, they may be brand new cavities (noticeable near the gums). If they are near the edges of your teeth, it could be hypocalcification. However, if they seem to come and go, it may be related to a mouth-breathing habit. If your teeth dry out, the white spots will become more evident. Personally, mine tend to appear in the morning as I've woken up and disappear around mid morning with the help of eating and drinking. They too are on the front two teeth. So, I could be between hypocalcification or a mouth-breathing habit. Anyway, after looking it all up THE ONLY WAY to rid it is to go to a dentist whom will help perfect your smile by putting some bonding material over the top of it. THE ONLY WAY to help it - is like others have said - stop with so much candy / soda and replace it with brushed teeth being the last thing you do before you go to bed and start your day with AND drink lots and lots and lots of water to help keep your teeth hydrated. :( ... but, it's off to the dentist.