Features: 1. No harm to the teeth and oral soft tissue 2. Ideal dental arch track、 Moderate forces 3. Short treatment cycle and never rebounded 4. Avoid the trouble and inconvenience causing by Arch wire training、 especially for man who cannot achieve Arch wire training   Description: Item Type: Oral Care Material: Medical Silica Gel Color: As piciture shown   Usage: Wear during the day and four hours sleep wear、 day wear time is devided into 4 paragraphs、 each one hour、 at every half an hour before the requirements of prtients with teeth and one minute、 then relax one minute at each of the latter half of hour requirement inpatients with occlusal gently、 so always keep in touch on the lower lip. Relax while studying at correction.   Package included:  1 X Tooth orthodontic appliance trainer   Notes: 1. Tooth orthodontic is a long process、 please be patient for the effect. 2. The product is made of medical plastic and there is a little plastic smell odor、 please rinse with saline or toothpaste before using. 3. Please understand that colors may exist chromatic aberration as the different placement of pictures.