RAMPA Therapy: Effects on Craniofacial Growth Assessed by Coben Analysis and Statistical Evaluation

Area of Science:

• Orthodontics and Craniofacial Development
• Skeletal Malocclusion Research
• Orthopedic Maxillary Protraction

Background:

• Maxillary hypoplasia and skeletal Class III malocclusion present significant challenges in pediatric growth.
• Conventional orthopedic treatments may lead to undesirable posteroinferior displacement.
• The Right Angle Maxillary Protraction Appliance (RAMPA) system offers a novel approach to anterosuperior maxillary protraction.

Purpose of the Study:

• To investigate the craniofacial growth effects of the RAMPA system.
• To evaluate RAMPA's potential in mitigating adverse effects of conventional Class III treatments.
• To assess changes in facial depth, anterior facial height, and mandibular rotation.

Main Methods:

• Retrospective comparative cohort study of 30 growing patients (17 males, 13 females).
• Coben analysis of cephalometric measurements before (T1) and after (T2) RAMPA treatment.
• Statistical analysis using paired t-tests or Wilcoxon signed-rank tests (α = 0.05).

Main Results:

• Significant increases in facial depth (Ba-N) and anterior facial height (N-Me) observed in both sexes.
• Males showed a significant decrease in the Gonial Angle, indicating anterior mandibular rotation.
• Females exhibited a significant increase in the maxillary depth ratio (Ptm-A/Ba-N).

Conclusions:

• RAMPA treatment effectively promotes anterosuperior craniofacial growth.
• The system induces favorable mandibular rotation, beneficial for skeletal Class III malocclusion.
• RAMPA shows potential clinical value for enhancing craniofacial balance.