A Novel Technique for Presurgical Nasoalveolar Molding Using Computer-Aided Reverse Engineering and Rapid Prototyping
Objective: To establish a new method of presurgical nasoalveolar molding (NAM) using computer-aided reverse engineering and rapid prototyping technique in infants with unilateral cleft lip and palate (UCLP). Methods: Five infants (2 males and 3 females with mean age of 1.2 w) with complete UCLP were recruited. All patients were subjected to NAM before the cleft lip repair. The upper denture casts were recorded using a three-dimensional laser scanner within 2 weeks after birth in UCLP infants. A digital model was constructed and analyzed to simulate the NAM procedure with reverse engineering software. The digital geometrical data were exported to print the solid model with rapid prototyping system. The whole set of appliances was fabricated based on these solid models. Results: Laser scanning and digital model construction simplified the NAM procedure and estimated the treatment objective. The appliances were fabricated based on the rapid prototyping technique, and for each patient, the complete set of appliances could be obtained at one time. By the end of presurgical NAM treatment, the cleft was narrowed, and the malformation of nasoalveolar segments was aligned normally. Conclusions: We have developed a novel technique of presurgical NAM based on a computer-aided design. The accurate digital denture model of UCLP infants could be obtained with laser scanning. The treatment design and appliance fabrication could be simplified with a computer-aided reverse engineering and rapid prototyping technique.
Nasoalveolar molding laser surface scanning rapid prototyping reverse engineering computer-aided design unilateral cleft lip and palate
Quan Yu Xin Gong Guo-Min Wang Zhe-Yuan Yu Yu-Fen Qian Gang Shen
Orthodontics Oral and Maxillofacial Surgery Plastic and Reconstructive Surgery, Ninth Peoples Hospital, Shanghai Jiao Tong University School of
国际会议
上海
英文
371-375
2011-12-28（万方平台首次上网日期，不代表论文的发表时间）