Maxillary Transverse Deficiency
Conditions
Interventions
Control group:Patients will wear either a Hass or Hyrax expander, bonded to the maxillary first permanent molars and first premolars respectively. Rapid maxillary expansion will be performed at a rate
Trial group:Patients will wear either a Hass or Hyrax expander, bonded to the maxillary first permanent molars and first premolars respectively. Slow maxillary expansion will be performed at a rate of
Sponsors
Shanghai Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine
Eligibility
Sex/Gender
All
Age
9 Years to 15 Years
Inclusion criteria
Inclusion criteria: 1. Age 9 years <= age <= 15 years, gender not limited; 2. The clinical diagnosis is insufficient lateral development of the maxilla; 3. The maxillary first molars and premolars have erupted; 4. Informed consent from the patient and their guardian.
Exclusion criteria
Exclusion criteria: 1. History of maxillofacial trauma or congenital malformation; 2. Severe systemic or genetic diseases; 3. Inability to cooperate with treatment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Interzygomatic width; | — |
Secondary
| Measure | Time frame |
|---|---|
| Nasal alar width;Maxillary width;Cephalometrics;Facial phenotype parameters;Airway volume;Minimum cross-sectional area of the airway (CSAmin);Sleep monitoring parameters; | — |
Countries
China
Contacts
Public ContactLiu Chao
Shanghai Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine
Outcome results
None listed