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This is a 9 years old boy in mixed dentition stage, with Angle Class I malocclusion, anterior teeth crowding and proclined upper incisors. He was diagnosed with lower lip biting habit. The treatment plan was delivered with two stages treatment, stage 1 was to correct the lip biting habit by using the lip bumper. After four-month observation and lip training, the habit was corrected and the irregularity of lower dentition was decreased. Continued with stage 2 treatment, patient had upper and lower 2x4 fixed appliances to align and level the anterior teeth. The result showed the previous proclined upper incisors were moved palatally, and the lower incisors were moved labially after 3 months of treatment. The total treatment duration was 8 months.
Chen, Chun-Yu; Kao, Chia-Tze; Wu, Yu-Tin; Chou, Chih-Chen; and Yang, Jui-Hsien
"Use the Lip Bumper Appliance to Control the Lower Lip Biting Habit,"
Taiwanese Journal of Orthodontics: Vol. 31:
1, Article 3.
https://doi.org/10.30036/TJO.201903_31(1).0003 Available at: https://www.tjo.org.tw/tjo/vol31/iss1/3
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