Size:thefirststage  |  Colour:Clear Tips: oral products, related to personal health, we do not accept returns for such products, please understand。This D series is the latest orthodontic device, which is divided into three stages. It has been greatly improved on the common braces, professional design, and more in line with the principle of correction. Imported food-grade materials, tested by authoritative organizations, in line with US FDA food-grade standards, please do not compare cheap and low-quality products on the market.D1 is soft, the first stage, using 1-3 months. D2 is moderately hard and the second phase is used for 6-8 months. D3 is hard, the third stage, using 5-8 months.The correction process is divided into three phases. After one month of D1 use, D2 can be gradually introduced together. Use D2 during the day and D1 at night. When fully adapted to the D2 correction, you can gradually introduce D3 together, use D3 during the day and D2 at night. Be sure to wear it every day. Under normal circumstances, there will be a significant improvement in 2-4 months.Suitable for the crowd: adults and children over 12 years old
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