Think about cost-benefit: in-office treatments are much faster but more expensive; take-home trays are cost-effective with steady

https://telegra.ph/Do-Whitening-Strips-Actually-Work-A-Dental-professionals-Point-of-view-04-15

Consider cost-benefit: in-office treatments are quicker however costlier; take-home trays are cost-effective with steady results-- pick based upon timeline and budget plan.