Impacted teeth
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Mixed dentition, 7-9 years old, gender not limited; 2.There is a unilateral inverted maxillary labial obstructed incisor; 3. Dental health, no history of root canal treatment, no large-scale filling, no restoration of dental crowns or implants; 4. The periodontal joint and temporomandibular joint are basically normal; 5. No other systemic diseases.
Exclusion criteria
Exclusion criteria: 1.The clinical crown of the maxillary first molar is less than 4mm; 2. patients with a history of maxillary surgery, trauma, and tumor; 3. Developmental abnormalities of the maxilla, such as severe asymmetry and cleft palate, affect the integrity and structure of the jawbone; 4. Metabolic related diseases, especially those that affect bone metabolism.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Von Mises stress and initial displacement of the periodontal membrane of impacted teeth and supporting molars; | — |
Countries
China
Contacts
Stomatology Hospital,Zhejiang University School Medicine