Cracks appear in the enamel of teeth and
are exposed to food and other debris.
This accumulates and causes
yellowing or browning.
While the enamel is white, the natural color
of the dentin underneath is a yellowish-brown. As enamel chips away or breaks down, the natural color can be seen.
Younger teeth are naturally whiter because their newer enamel allows less natural yellow to show through and, with fewer cracks in the enamel, there is less staining build-up. They are the “gold standard” we all try to achieve using a growing range of whitening toothpastes or chemical gels, all making outrageous promises of fast acting tooth whitening.
OTC tooth whitening products are designed to attack surface staining. That means interacting with the precious enamel shell
that surrounds and protects your teeth. Because they rely on chemicals, abrasives and scrubbing, they are actually wearing away microscopic layers of enamel to
remove the surface stains. Depending
on the depth and resilience of the enamel, they will eventually wear it so thin that the yellowish dentin layer begins to show through.The illusion is that you’re not doing a
| good job
of whitening. The reality is that you may have nothing left to whiten.
So when you see or hear advertising for those popular oral care products that tell you “If you’re not whitening, you’re yellowing”, you should probably think twice about that advice.
WhiteShield is made from safe, natural ingredients that gently break up and dissolve surface stain without harming enamel. And unlike those other whiteners, tasteless WhiteShield is safe to ingest with every cup
of coffee. That’s something that can’t be
said for a tray of carbamide peroxide gel, toothpaste,or a
double dose of hydrogen peroxide.