Pediatric skeletal crossbite
Conditions
Interventions
Anterior traction with invisible aligners without brackets:None
Anterior traction with rapid maxillary expansion:None
Sponsors
Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University
Eligibility
Sex/Gender
All
Age
6 Years to 10 Years
Inclusion criteria
Inclusion criteria: 1. Age Range: • Participants must be between the ages of 6 and 10 years old (including 6 and 10 years old). 2. Cervical Vertebral Maturation (CS) Assessment: • Accurate assessment of cervical vertebral maturation through lateral cephalometric radiographs. • The cervical vertebral maturation must be at stage II (CS2) or stage III (CS3), indicating that the child's growth and development have not surpassed the peak of growth and development. 3. Facial Soft Tissue Assessment: • Presence of midface soft tissue deficiencies, which may include but are not limited to cleft lip and palate, facial asymmetry, and soft tissue hypoplasia. 4. Dental Relationship: • Angle's Class III molar relationship. • Anterior crossbite (ANB < 0°): The angle between the maxilla and mandible is smaller than normal (the ANB angle represents the anteroposterior relationship between the maxilla and mandible). • Wits value < -2 mm: The Wits value is an indicator to assess the relative anteroposterior position of the maxilla and mandible. A value less than -2 mm indicates that the mandible is excessively protruded relative to the maxilla. 5. Other Medical Assessments: • Participants should undergo a comprehensive medical evaluation to exclude other serious health issues that may affect facial or oral development. 6. Informed Consent: • All participants must have their legal guardians sign an informed consent form agreeing to participate in the study and undergo relevant medical examinations and interventions. 7. Research Ethics: • The study should comply with all relevant ethical regulations and guidelines to ensure the protection of participants' rights and interests.
Exclusion criteria
Exclusion criteria: 1. Temporomandibular Joint Disorder: • Participants who have experienced symptoms of temporomandibular joint disorder (such as pain, joint clicking, limited mouth opening, etc.) within the past year, or have been diagnosed with temporomandibular joint disorder by a doctor, will be excluded. 2. Congenital Craniofacial Deformities: • Participants with any form of congenital craniofacial deformities, including but not limited to craniosynostosis, micrognathia, cleft lip and palate, will be excluded. 3. History of Major Surgical Trauma: • Participants with a history of major surgical trauma in the facial or neck region, which may significantly affect the participant's facial skeletal or soft tissue structure, will be excluded. • Additionally, participants with a history of major surgical trauma in other parts of the body that may potentially affect facial skeletal or soft tissue development will also be excluded. 4. History of Facial Fractures or Trauma: • Participants with a history of fractures or trauma in the facial region, which may have resulted in changes to the facial skeletal structure and potentially impact the study results, will be excluded. 5. History of Orthodontic Treatment: • Participants who have undergone orthodontic treatment (such as braces, arch expansion, etc.) within the past two years, which may have altered tooth alignment and occlusion, will be excluded as these treatments may compromise the accuracy of the study results. 6. Other Medical Conditions: • Participants with other medical conditions that may affect facial skeletal or soft tissue development, such as tumors, infections, metabolic disorders, etc., will be excluded. 7. Uncooperative or Unable to Complete the Study: • Participants who are unable to cooperate or complete the examinations, assessments, or treatments required in the study due to age, intellectual limitations, or other reasons, will be excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Distance of maxillary advancement; | — |
Secondary
| Measure | Time frame |
|---|---|
| Upper airway space;cephalometric measurement results; | — |
Countries
China
Contacts
Public ContactGUO jinghan
Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University
Outcome results
None listed