Princeton's WordNet(4.00 / 1 vote)Rate this definition: 1  kin, kinsperson, family(noun) a person having kinship with another or others. he's kin; he's family. 2  kin, kin group, kinship group, kindred, clan, tribe(adj) group of people related by blood or marriage.
How much does tray teeth whitening cost? Topics | Oral Health | Teeth Whitening | How much does tray teeth whitening cost? You can expect to pay anywhere from $10 to $40 for a tray-based teeth whitening kit purchased over the counter (OTC) from a pharmacy or other retail store. You can also purchase tray-based teeth whitening systems from dentists. These systems feature custom-fit tooth trays or mouthpieces, which is why they are significantly more expensive than OTC tray-based teeth whitening kits. Purchasing a tray-based teeth whitening system from your dentist may cost up to $500.
The average person with light to moderate stains should use the product daily for 4-7 days (1-3 hours per day) before all stains have been removed from the surface of their tooth's enamel. Those with more severe stains may need to use the teeth whitening gel and trays daily for as long as 10-14 days.or UNITED STATES customers the 30 days starts with the date we ship your teeth whitening tray creation kit. If within 30 days of that date you decide you are dissatisfied all you must do is return your trays to the address found on the contact page.