Treatment effects of Reverse Twin-Block and Reverse Pull Face Mask on craniofacial morphology in early and late mixed dentition children
| Autor: | Norehan Mokhtar, Mohd Fadhli Khamis, Nashid Fareen, Mohammad Khursheed Alam |
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| Rok vydání: | 2017 |
| Předmět: |
Cephalometric analysis
Male Dentition Mixed Cephalometry Lower lip Dentistry Orthodontics Interceptive Orthodontics 03 medical and health sciences 0302 clinical medicine Lower facial height Late mixed dentition Orthodontic Appliances medicine Extraoral Traction Appliances Humans 030212 general & internal medicine Craniofacial Child Maxillofacial Development Retrospective Studies Facial axis business.industry Malaysia 030206 dentistry medicine.disease Cross-Sectional Studies Malocclusion Angle Class III Treatment Outcome Otorhinolaryngology Surgery Female Oral Surgery Malocclusion Anatomic Landmarks Cephalogram business |
| Zdroj: | Orthodonticscraniofacial research. 20(3) |
| ISSN: | 1601-6343 |
| Popis: | Structured AbstractObjective Reverse Twin-Block (RTB) and Reverse Pull Face Mask (RPFM) appliances are used to correct Class III malocclusion in growing patients. Aim of this retrospective study was to compare and analyse craniofacial changes produced by RTB and RPFM in the early and late mixed dentition in Malay children with Class III malocclusion. Methods Data consisted of pre- and post-treatment lateral cephalograms of 95 children, 49 patients with RTB and 46 patients with RPFM, divided into an early (8-9 year) and late (10-11 year) group. Treatment changes were assessed by the Ricketts analysis using CASSOS software, where 71 anatomic landmarks were identified in each cephalogram. Paired and independent t tests were performed for statistical comparison. Results Paired t test revealed significant changes in facial axis, facial angle, MD plane to FH, lower facial height, mandibular arc, maxillary convexity, U1 to APog, L1 to APog, L1 to APog angle and upper lip to E-plane measurements in RPFM, whereas significant changes were found in facial taper, U1 to APog and lower lip to E-plane values with RTB in the early treatment group. Independent t test revealed significant changes in U1 to APog, L1 to APog and U6 to PtV values in the RTB group. Post-treatment comparison of RTB and RPFM showed significant differences in L1 to APog and L1 to APog angle values. Conclusions RPFM revealed more favourable craniofacial changes than RTB, particularly in the late mixed dentition stage. |
| Databáze: | OpenAIRE |
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