Maxillary transverse deficiency
Conditions
Interventions
Control group:Lefort I and median osteotomy combined with tooth-borne rapid maxillary expansion
Experimental group:Midpalatal suture osteotomy combined with microimplant-assisted rapid palatal expansion
Sponsors
Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1) Diagnosed with 5–12mm MTD based on the combined evaluation of both Yonsei Transverse Index on CBCT/CT and "Element III" of "The Six Elements of Orofacial Harmony" ("Andrews analysis") on dental cast; 2) Aged 18 to 45; 3) Midpalatal suture maturation belongs to stage D or E, according to the classification method proposed by Angelieri et al.
Exclusion criteria
Exclusion criteria: 1) Presence of cleft lip and palate, severe craniofacial anomalies or sydromic conditions; 2) History of orthodontic or orthopaedic treatment; 3) History of maxillofacial trauma; 4) Moderate to severe periodontal disease; 5) Maxillary first premolar and/or first molar missing; 6) Pre-operative examination indicates unsuitability for surgery; 7) Unable to cooperate with treatment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Immediate contribution of posterior midpalatal suture expansion; | — |
Secondary
| Measure | Time frame |
|---|---|
| Nasal expansion;Midpalatal suture expansion;Alveolar expansion;Inter-crown expansion ;Buccal inclination of teeth;Contribution of nasal expansion ;Contribution of midpalatal suture expansion;Contribution of alveolar expansion;Recurrence rate of nasal expansion;Recurrence rate of alveolar expansion;Recurrence rate of inter-crown expansion;VAS for pain;Operative time;Treatment costs; | — |
Countries
China
Contacts
Public ContactJiang Lingyong
Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine
Outcome results
None listed