Which of the following statements is true regarding home bleaching prescribed by the dentist?

Question

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The gel is placed in a custom-formed soft,thin plastic tray and is worn by the patient for periods as short as 30 minutes twice daily or as long as overnight.The home bleaching process is as effective as the in-office process but takes much longer and is sometimes used as a follow-up to the in-office procedure that "jump-starts" the bleaching process.The material for over-the-counter (OTC)products consists of clear,flexible strips containing a peroxide gel that are adapted over the teeth and worn for 30 minutes at a time once or twice a day.The strips cover only the anterior six teeth in each arch,so patients who want to bleach additional teeth may need to resort to night guard bleaching or can purchase through the dental office special Crest Whitestrips that are longer and cover more teeth.

Which of the Following Statements Is True Regarding Home Bleaching