Irregular results often come from irregular gel application; usage well-fitted trays and avoid overfilling to prevent streaks
https://www.mediafire.com/file/ucl5rjuc8q8ffsn/pdf-82914-73270.pdf/file
Patchy outcomes frequently come from irregular gel application; usage well-fitted trays and avoid overfilling to prevent streaks, gum irritation, and wasted item.