Based on the provided white-background product image, generate a detailed poster for the orthodontic toothbrush. The background is a fresh white and an extremely light ice blue, with two lines of thick black sans-serif lines on the top left titled "Fits the Curve / More Thorough Cleaning," and small text below "U-shaped bristle grooves, daily cleaning around the bracket." In the center, the U-shaped head of the light ice blue toothbrush is enlarged, with the brush head lightly attached to a metal bracket on a set of white tooth models; The gums are a low-saturation pink color, with a simple, clean structure that does not appear medical. On the right side, place a blue-purple circular bristle groove icon and the text "U-shaped Fit Brush Head". There is a comparison image of fillets on each side at the bottom: the left image shows the product's bonding bracket, adjacent blue hook mark, and "fitting groove"; the right image shows the standard flat brush head is hard to bond, with a light gray cross and "flat bristles." The product maintains a light blue handle and U-shaped bristle structure, allowing adjustment of brush head angle, braces material, and bristle density. No brand information, no new brand or slogan. Avoid treatment promises, original brand and model, overly small footnotes, and obvious shadows.