Concave Fit Design: concave brush head specially designed for orthodontic people, closely fits the braces. 2-in-1 Design of Toothbrush and Interdental brush: the end comes with a gap brush, telescopic design is convenient to carry, accurately cleans the gap between the aligners and teeth, effectively removes food debris. Fluoride Brush Wire Preventing Caries: It can efficiently clean and prevent caries at the same time, which greatly improves the cleaning efficiency, maintains oral hygiene and helps the orthodontic treatment to be carried out smoothly. Soft Bristles: soft bristles, deep cleaning while gently caring for the gums, to avoid the irritation of the gums and mouth when brushing, reduce discomfort during orthodontic treatment. Convenient and Easy to Hold: comfortable and stable grip, flexible and precise control, even if the long time brushing hand is not easy to fatigue, for orthodontic patients daily oral cleaning to provide convenience. Fits Orthodontic Needs: It has a concave brush head design, and this shape fits well on the surface of the braces. Whether it is metal or ceramic braces, the toothbrush can wrap around the braces tightly so that the bristles can penetrate deep into the gap between the braces and the teeth, clean the places that are hard to reach with a normal toothbrush, and remove food debris. The end comes with a gap brush, retractable design easy and portable.