Irregular results frequently originate from uneven gel application; usage well-fitted trays and avoid overfilling to prevent streaks

https://judahfqaz767.lucialpiazzale.com/can-you-whiten-teeth-with-braces-a-guide-to-timing-1

Irregular outcomes frequently come from uneven gel application; use well-fitted trays and prevent overfilling to prevent streaks, gum inflammation, and lost item.