Disadvantages of In-Office Whitening. 1  In-office bleaching is more expensive than take-home alternatives. 2  Its cost, on average, is $650, compared to $400 for take-home trays and under $100 for over-the-counter bleaching trays or whitening strips.
Planetary protection is a guiding principle in the design of an interplanetary mission, aiming to prevent biological contamination of both the target celestial body and the Earth in the case of sample-return missions.
What is 'Overdraft Protection'. Overdraft protection is a line of credit that banks offer to their customers to cover their overdrafts. Overdraft protection kicks in when a customer writes a check for more than the amount in their account. Also referred to as cash reserve checking.. Next Up. Overdraft protection comes at a price.