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.
Sheldon James Plankton, or simply Plankton, is a character in the Nickelodeon animated television series SpongeBob SquarePants.Although usually an antagonist, he is frequently shown as a protagonist or an antihero. He is voiced by Mr. Lawrence and first appeared in the episode  Plankton!  on July 31, 1999.heldon James Plankton, or simply Plankton, is a character in the Nickelodeon animated television series SpongeBob SquarePants.
What are Zooplankton. The name plankton is derived from the Greek word planktos meaning to wander, and refers to the weak swimming movements of organisms in this category. Plankton can be subdivided into animals, or zooplankton, and plants, or phytoplankton.There are advantages in being small in aquatic environments: in the first place the base of the food chain, i.e. the phytoplankton, consist of microscopic plants from 1/1000 of a mm to 2 mm in size.he name plankton is derived from the Greek word planktos meaning to wander, and refers to the weak swimming movements of organisms in this category.