Chen H J, Wang C H, Wang C C, Shieh T Y
Department of Dentistry, Kaohsiung Medical College, Taiwan, Republic of China.
Gaoxiong Yi Xue Ke Xue Za Zhi. 1990 Oct;6(10):546-50.
Cleft palate is a commonly observed congenital maxillofacial defect. The first problem to be faced is the interference of feeding. It is a hard challenge for both the parents and the dentist. A cleft palate infant is unable to produce negative pressure in the oral cavity, thus resulting in feeding difficulty. The maxillary obturator resolves feeding problem and induces better maxillary growth patterns before operation. The maxillary obturator should be applied as early as possible to avoid the post surgical problems. The material for traditional obturator is tough and often injures the soft tissue. In order not to interfere with the growth of the dental arch, the border of the obturator must be trimmed regularly, until the retention becomes insufficient. In this paper, a modified technique of obturator fabrication was presented. The new method uses silicone relining material instead of ortho resin, as the packing of the obturator. It has been applied to dozens of patients. After a long follow up and comparison with the traditional method, the advantages of the new design can be summarized as follows: (1) Silicone is softer and does not injure the soft tissue. (2) It does not require the trimming of the border of obturator. (3) It has better retention and comfort for the patients.
腭裂是一种常见的先天性颌面缺陷。首先要面对的问题是喂养障碍。这对父母和牙医来说都是一项艰巨的挑战。腭裂婴儿无法在口腔内产生负压,从而导致喂养困难。上颌阻塞器可解决喂养问题,并在手术前诱导更好的上颌生长模式。应尽早应用上颌阻塞器以避免术后问题。传统阻塞器的材料坚硬,常常会损伤软组织。为了不干扰牙弓的生长,阻塞器的边缘必须定期修整,直到固位不足。本文介绍了一种改良的阻塞器制作技术。新方法使用硅橡胶重衬材料代替正畸树脂作为阻塞器的填充材料。该方法已应用于数十例患者。经过长期随访并与传统方法比较,新设计的优点可总结如下:(1)硅橡胶更柔软,不会损伤软组织。(2)不需要修整阻塞器的边缘。(3)对患者有更好的固位和舒适度。