Which whitening tray works best? study compares patient satisfaction
Symptom relief
Completed
This study compared two types of custom-made trays used for at-home teeth whitening. Forty adults used either an Essix-type retainer or a Vivera retainer with the same whitening gel for four weeks. Researchers measured how satisfied patients were with each tray, how well they whi…
Phase: NA • Sponsor: Universidad Rey Juan Carlos • Aim: Symptom relief
Last updated Apr 20, 2026 16:14 UTC