本文選題：誘導(dǎo)技術(shù) + 重新排列　； 參考：《福州大學(xué)》2014年碩士論文

【摘要】：兒童隱形誘導(dǎo)器是近幾年才出現(xiàn)的一種引導(dǎo)兒童牙齒重新排列的新裝置,以其舒適性、美觀性、便捷性以及療效可預(yù)見性受到眾多兒童患者的青睞,迅速的在正畸界得到應(yīng)用和推廣。而兒童隱形誘導(dǎo)器的獨(dú)特作用方式使得醫(yī)生對誘導(dǎo)過程中產(chǎn)生何種形式的力系以及怎樣的作用方式缺乏認(rèn)識,這在很大程度上制約了兒童隱形誘導(dǎo)技術(shù)的全面推廣。進(jìn)一步研究誘導(dǎo)器作用下的牙頜組織力學(xué)特性以及作用力系,可以為醫(yī)生制定、修改以及優(yōu)化誘導(dǎo)方案提供指導(dǎo)。本文結(jié)合臨床的兒童誘導(dǎo)過程,利用數(shù)字化技術(shù)、3D打印技術(shù)以及有限元仿真技術(shù)對兒童整個(gè)動(dòng)態(tài)誘導(dǎo)過程做了分析和研究。首先,利用數(shù)字化技術(shù)快速準(zhǔn)確的建立兒童牙頜三維模型,根據(jù)生物學(xué)上骨重建的原理,提出了骨重建力學(xué)仿真的數(shù)值模型,得到牙周膜應(yīng)變與牙齒移動(dòng)速度的關(guān)系。通過有限元分析得到誘導(dǎo)器作用下的牙周膜應(yīng)變情況,從而建立一個(gè)連續(xù)誘導(dǎo)過程的有限元模型,通過分析連續(xù)兩次更換誘導(dǎo)器的兒童切牙整體移動(dòng)的動(dòng)態(tài)誘導(dǎo)過程,得到誘導(dǎo)過程中誘導(dǎo)器的作用力系以及牙頜組織的生物力學(xué)狀況,補(bǔ)充和完善了醫(yī)生對誘導(dǎo)過程中作用力系和作用方式的認(rèn)識。其次,研究了個(gè)體差異在整個(gè)誘導(dǎo)過程中對作用力系和作用方式的影響,個(gè)體差異對作用力系的影響有限,主要反映在對力偶的改變上。最后,分析了兒童整體移動(dòng)誘導(dǎo)過程中對其它牙齒的影響,發(fā)現(xiàn)各個(gè)牙齒都承擔(dān)起支抗牙的作用,支抗力由重新排列牙齒的鄰牙向周圍傳遞。
[Abstract]:The child stealth inducer is a new device to guide the rearrangement of children's teeth in recent years. It is favored by many children because of its comfort, beauty, convenience and predictability of curative effect. It is rapidly applied and popularized in orthodontic field. However, the unique role of the child stealth inducer makes doctors lack the understanding of what form of force system and how to act in the induction process, which to a great extent restricts the comprehensive popularization of the stealth induction technology of children. The further study of the mechanical properties of dental and maxillary tissues and the force system under the action of the inducer can provide guidance for doctors to formulate, modify and optimize the induction scheme. In this paper, the whole dynamic induction process of children is analyzed and studied by using digital 3D printing technology and finite element simulation technology combined with the clinical induction process of children. Firstly, the three-dimensional model of dental and maxilla of children was established quickly and accurately by digital technology. According to the principle of bone reconstruction in biology, the numerical model of bone reconstruction mechanics simulation was put forward, and the relationship between the strain of periodontal membrane and the speed of tooth movement was obtained. The strain of periodontal membrane under the action of inducer is obtained by finite element analysis, and a finite element model of continuous induction process is established, and the dynamic induction process of the whole movement of incisor in children with continuous twice replacement inducer is analyzed. The force system of the inducer and the biomechanical condition of the dental and maxillary tissue were obtained, which supplemented and improved the doctors' understanding of the force system and the mode of action during the induction process. Secondly, the influence of individual difference on the force system and the mode of action in the whole induction process is studied. The effect of individual difference on the force system is limited, which is mainly reflected in the change of the couple. Finally, the influence of children on other teeth during the whole movement induction is analyzed. It is found that each tooth plays the role of Anchorage, and the branch resistance is transferred from the adjacent teeth of the rearranged teeth to the surrounding teeth.
【學(xué)位授予單位】：福州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：R783.5

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