Postoperative evaluation of grafted bone in alveolar cleft using three-dimensional computed tomography data

Area of Science:

• Oral and Maxillofacial Surgery
• Pediatric Dentistry
• Craniofacial Anomalies

Background:

• Alveolar cleft reconstruction is crucial for patients with complete unilateral cleft lip and palate.
• Computed tomography (CT) imaging is utilized for postoperative evaluation of bone formation.
• Quantitative assessment of bone grafts using 3D data and image superimposition offers enhanced analysis.

Purpose of the Study:

• To quantitatively evaluate bone graft success in alveolar clefts.
• To correlate preoperative canine position and length with postoperative bone formation.
• To determine optimal surgical timing for alveolar cleft bone grafting.

Main Methods:

• 12 patients with complete unilateral cleft lip and palate underwent helical CT scans preoperatively and 6 months postoperatively.
• 3D data analysis using Mimics and 3-matic software facilitated image superimposition.
• Measurements included unerupted canine position/length and alveolar cleft width.

Main Results:

• Significant correlations were found between bone formation and preoperative canine position (r = -.766, p < .01) and canine length (r = .681, p < .05).
• Stepwise multiple regression identified preoperative canine position as the sole independent predictor of bone formation.
• These findings highlight the predictive value of canine position for bone graft outcomes.

Conclusions:

• Preoperative canine position is a key factor in successful alveolar cleft bone grafting.
• Optimal surgical timing is indicated when the canine cusp approaches the alveolar plane.
• This quantitative approach aids in refining surgical strategies for cleft lip and palate repair.