标签：Teeth. - 英国华人论坛

Home whitening is when custom fit teeth whitening trays are specifically constructed        to fit your teeth, by a Cosmetic Dentist, into which you apply small amounts of teeth whitening gel and wear the trays for about an hour a day...英国华人论坛

This acid is called lactic acid, this dissolves the enamel and gets into the next layer which is dentine and forms a lesion or white spots; if left unattended this gives rise to a cavity in the tooth. At this stage, the nerve endings in the...英国华人论坛