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The effect of bite planes on deepbite correction with clear aligners.
Bingguo Kou1, Yimeng Xu1, Qiong Liu1
1State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
Clinical Oral Investigations
|May 15, 2026
Summary
Clear aligner bite planes do not improve anterior intrusion but effectively prevent spontaneous molar intrusion. This helps maintain vertical molar position during deep overbite correction.
Area of Science:
- Orthodontics
- Dental Biomaterials
Background:
- Deep overbite correction using clear aligners presents challenges, including reduced anterior intrusion and unintended molar intrusion.
- Bite planes are sometimes used to mitigate these issues, but their efficacy is debated.
Purpose of the Study:
- To evaluate the impact of bite planes on anterior intrusion efficiency and posterior tooth displacement during clear aligner treatment for deep overbite.
Main Methods:
- A retrospective study analyzed 36 adult patients with deep overbite treated with clear aligners (Smartee® system).
- Patients were divided into a bite plane group (n=15) and a control group (n=21).
- Digital models were used to measure tooth displacement and calculate anterior intrusion accuracy.
Main Results:
- No significant difference in anterior intrusion accuracy was observed between the bite plane and control groups.
- The control group showed spontaneous molar intrusion (0.1-0.2 mm), correlated with treatment duration.
- The bite plane group exhibited no spontaneous molar intrusion, with slight extrusion instead, and no correlation with treatment duration.
Conclusions:
- Bite planes in clear aligners do not enhance anterior intrusion or affect labiolingual tooth movement.
- They effectively prevent spontaneous molar intrusion, maintaining vertical molar position during deep overbite correction.
- Bite planes are recommended for deep bite correction in normodivergent and hypodivergent patients.
