Consider cost-benefit: in-office treatments are quicker however more expensive; take-home trays are cost-effective with progressive
https://www.mediafire.com/file/dvy309bk5pg1g0q/pdf-80125-38392.pdf/file
Consider cost-benefit: in-office treatments are faster however pricier; take-home trays are economical with steady results-- select based upon timeline and spending plan.