Patchy results typically come from uneven gel application; usage well-fitted trays and prevent overfilling to avoid streaks
https://www.mediafire.com/file/1vi2041bbki8m0c/pdf-52823-30230.pdf/file
Patchy outcomes typically originate from unequal gel application; usage well-fitted trays and prevent overfilling to avoid streaks, gum inflammation, and squandered product.