Novel Three-Dimensional Understanding of Maxillary Cleft Distraction

Area of Science:

• Craniofacial surgery
• 3D imaging analysis
• Orthodontics

Background:

• Cleft lip and palate (CLP) treatment often requires complex surgical interventions.
• Quantifying craniofacial changes accurately is crucial for assessing treatment outcomes.
• Rigid external device (RED) distraction is a technique used for maxillary advancement in CLP patients.

Observation:

• A 14-year-old nonsyndromic unilateral cleft lip and palate patient was analyzed.
• Preoperative (T1) and postoperative (T2) 3D data were captured using cone beam computed tomography and stereophotogrammetry.
• Image superimposition and volumetric/linear analyses were performed using specialized software.

Findings:

• Significant increases in airway volume (+5250 mm³), bone (+1719 mm³), and soft tissue (+44,432 mm³) were observed.
• Substantial linear advancements were noted in key facial landmarks, with P values <0.001.
• The methodology demonstrated reliability and reproducibility through repeated measurements.

Implications:

• This study establishes a novel, standardized 3D methodology for analyzing craniofacial complex changes post-RED distraction.
• The findings provide objective data on the efficacy of RED distraction in improving craniofacial morphology and airway dimensions.
• This approach can be widely adopted for evaluating surgical interventions in cleft lip and palate patients.