Consider cost-benefit: in-office treatments are faster but more expensive; take-home trays are economical with steady
https://www.mediafire.com/file/09bysq6f7vq1hxg/pdf-56509-33817.pdf/file
Think about cost-benefit: in-office treatments are quicker but pricier; take-home trays are cost-effective with steady results-- select based upon timeline and budget.