상악골 급속 확장시 상악골의 응력 분산과 변위에 대한 유한요소법적 분석
A finite element analysis of the stress distribution and displacement in human maxilla to rapid palatal expansion
- 조봉제(Bong-Jea Joe) 손병화(Byung-Hwa Sohn)
- The Korean Journal of Orthodontics
- 제15권 제1호
- 등재여부 : KCI등재
- 43 - 54 (12 pages)
Recently, rapid palatal expansion technique is widely used for the correction of the skeletal imbalance in Cl III malocclusion patients. There were many studres about the cephalometric changes to rapid palatal expansion but quantitative analysis were small. The purpose of this study was to analysis the stresses and displacement of the maxilla in human dry skull to rapid palatal expansion. The results were as follows. 1. The anterior portion of palate show more lateral and inferior displacement than the posterior portion. But the posterior portion show more anterior displacement. 2. In transpalatal suture area, the medial portion show more lateral displacement than the medral portion. 3. In mid-sagittal plane, the power portion (palatal area) of maxilla show more anterior, lateral, inferior displacement than the upper portion (forntamaxillary stuture area). 4. In zygomatic arch, the abjacent area to maxilla show tensile stresses and the abjacent area to forntal bone show compressive stresses. 5. The sequence of stress bearng area to R.P.E is upper retromolar area, upper 1st molar, 1st premolar, 2nd premolar, anterior segment of teeth.