supply of orthodontic tooth brush bristle design v shaped or bracket groove cut, where center bristles are shorter to sit on brackets, while outer bristles clean the gum line. bristle type ultra-soft or soft, with rounded tips to prevent enamel damage and gum recession. filament material often made of curen polyester or pbt polybutylene terephthalate which are more stable and stiff when wet compared to traditional nylon. filament diameter very fine, typically 0 point 10 for improved penetration
