中华口腔正畸学杂志
中華口腔正畸學雜誌
중화구강정기학잡지
CHINESE JOURNAL OF ORTHODONTICS
2010年
3期
153-156
,共4页
聂敏媛%丁寅%党平%施生根
聶敏媛%丁寅%黨平%施生根
섭민원%정인%당평%시생근
上颌骨复合体%有限元法%骨皮质切开%腭扩展术
上頜骨複閤體%有限元法%骨皮質切開%腭擴展術
상합골복합체%유한원법%골피질절개%악확전술
Craniofacial complex%Finite element method%Lateral osteotomy%Palatal expansion technique
目的 模拟手术辅助腭扩展术,分析上颌骨复合体应力分布与位移趋势.方法 在力学相似性较高的上颌骨复合体三维有限元模型上,模拟第一磨牙处颊侧骨皮质切开辅助腭扩展术,计算各标志点的应力及位移,所得结果与常规腭扩展相比较.结果 颊侧骨皮质切开术辅助腭扩展开展牙弓,可有效增加横向扩展的位移,尤其在尖牙和前磨牙区.同时鼻腔和腭盖下降,有助于降低通气阻力.结论 颊侧骨皮质切开辅助腭扩展的方法效果确切.
目的 模擬手術輔助腭擴展術,分析上頜骨複閤體應力分佈與位移趨勢.方法 在力學相似性較高的上頜骨複閤體三維有限元模型上,模擬第一磨牙處頰側骨皮質切開輔助腭擴展術,計算各標誌點的應力及位移,所得結果與常規腭擴展相比較.結果 頰側骨皮質切開術輔助腭擴展開展牙弓,可有效增加橫嚮擴展的位移,尤其在尖牙和前磨牙區.同時鼻腔和腭蓋下降,有助于降低通氣阻力.結論 頰側骨皮質切開輔助腭擴展的方法效果確切.
목적 모의수술보조악확전술,분석상합골복합체응력분포여위이추세.방법 재역학상사성교고적상합골복합체삼유유한원모형상,모의제일마아처협측골피질절개보조악확전술,계산각표지점적응력급위이,소득결과여상규악확전상비교.결과 협측골피질절개술보조악확전개전아궁,가유효증가횡향확전적위이,우기재첨아화전마아구.동시비강화악개하강,유조우강저통기조력.결론 협측골피질절개보조악확전적방법효과학절.
Objective To simulate the state of surgically assisted rapid maxillary expansion on the craniofacial complex, and to evaluate the stress distribution and displacement. Methods Simulated surgically assisted rapid maxillary expansion was performed at the first molar region on a three-dimensional finite element model of the craniofacial complex. The stress distribution and displacement were compared before and after expansion. Results Expansion was found in thetransverse plane, especially in the canine and the first premolar regions. The nasal cavity and palatal plane moved downward and that could relief the resistance of breath. Conclusions Surgically assisted rapid maxillary expansion was effective.
