Align Technology makes Invisalign clear aligners, a teeth-straightening alternative to traditional metal braces, along with related scanning and imaging technology used by dentists and orthodontists. Its clear aligner system uses a series of custom-manufactured, nearly invisible plastic aligners that gradually shift teeth into position, an alternative that many patients, particularly adults, prefer over the more visible appearance of traditional metal braces. Align Technology's iTero digital scanning systems let dental professionals capture digital impressions of a patient's teeth, replacing traditional physical molds and feeding directly into the design process for custom Invisalign aligners. The company's revenue is tied to overall demand for orthodontic treatment, particularly clear aligner adoption among the growing population of teens and adults seeking straighter teeth, along with competition from other clear aligner brands that have emerged since Align's original patents expired.