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A novel technique for presurgical nasoalveolar molding using computer-aided reverse engineering and rapid prototyping
Quan Yu1, Xin Gong, Guo-Min Wang
1Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, PR China.
The Journal of Craniofacial Surgery
|December 29, 2010
Summary
A new computer-aided method simplifies presurgical nasoalveolar molding (NAM) for infants with unilateral cleft lip and palate (UCLP). This technique uses 3D scanning and rapid prototyping to create custom appliances, improving cleft alignment.
Area of Science:
- Craniofacial Surgery
- Biomedical Engineering
- Pediatric Dentistry
Background:
- Presurgical nasoalveolar molding (NAM) is crucial for managing infants with unilateral cleft lip and palate (UCLP).
- Traditional NAM appliance fabrication can be time-consuming and may require multiple adjustments.
- Advancements in digital technology offer potential improvements in precision and efficiency.
Purpose of the Study:
- To introduce a novel computer-aided design (CAD) method for presurgical nasoalveolar molding (NAM).
- To utilize reverse engineering and rapid prototyping for fabricating NAM appliances in infants with UCLP.
- To evaluate the efficacy of this digital workflow in managing nasoalveolar deformities.
Main Methods:
- Five infants with complete UCLP underwent presurgical NAM using the new technique.
- Three-dimensional laser scanning captured intraoral casts of UCLP infants within two weeks of birth.
- Reverse engineering software simulated NAM procedures, and digital data guided rapid prototyping for appliance fabrication.
Main Results:
- The digital workflow streamlined the NAM procedure and accurately estimated treatment outcomes.
- Rapid prototyping enabled simultaneous fabrication of complete appliance sets for each patient.
- Presurgical NAM treatment resulted in significant cleft narrowing and improved alignment of nasoalveolar segments.
Conclusions:
- A novel computer-aided technique for presurgical NAM has been successfully developed.
- Laser scanning provides accurate digital models of UCLP infant dentition.
- Computer-aided reverse engineering and rapid prototyping simplify NAM treatment design and appliance fabrication.
