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.
Split and merge into it. Answer by Bunnylover86. Confidence votes 11. planktons middle name was never identified, but is recognized as Sheldon J. plankton. (J. was never discovered as a full middle name) i think it was used to make the name fit better and sound better. middle name is used to honor a friend of your parents, to remember a relative, to sustain use of an important personal name or surname in your family's history, to reference â¦ someone who was famous or important at the time of your birth, or to distinguish you from a relative with a similar personal name and surname.