有限元法分析多用唇弓和搖椅弓在矯治深覆牙合時(shí)的應(yīng)力效應(yīng)
發(fā)布時(shí)間：2018-12-25 12:41
【摘要】：目的:研究多用唇弓和搖椅弓作用下各牙位所受應(yīng)力情況。方法:建立下頜骨、下牙列、下頜牙方絲弓托槽及弓絲的有限元模型,通過(guò)ANSYS分析多用唇弓和搖椅弓不同應(yīng)用方法下各牙位的受力情況。結(jié)果:多用唇弓入槽后,切牙受齦向力,磨牙受向力;并隨著多用唇弓絲給尖牙施以齦向力,切牙所受齦向力減小,第一磨牙所受向力增加。搖椅弓隨著入槽牙位的增加,切牙受齦向力繼續(xù)增加,尖牙受向力并逐漸增加,第二前磨牙受向力,第一磨牙受力方向由向轉(zhuǎn)為齦向。結(jié)論:多用唇弓對(duì)尖牙施加齦向力時(shí),側(cè)切牙受力顯著減小,應(yīng)在切牙壓低完成后,單獨(dú)完成尖牙的壓低過(guò)程。搖椅弓入槽方式不同對(duì)各牙位所產(chǎn)生的應(yīng)力大小和方向都有所不同,并且隨著入槽牙位的增加,側(cè)切牙和磨牙受力改變最為明顯。
[Abstract]:Objective: to study the stress of teeth under the action of multiple labial arch and rocking chair arch. Methods: the finite element models of mandible, lower dentition, mandibular square wire arch bracket and arch wire were established. The stress of each tooth was analyzed by ANSYS under different application methods of labial arch and rocking chair arch. Results: the incisors were subjected to the gingival force and the molars were subjected to the directional force after the multiple use of the labial arch into the alveolus, and the gingival force of the incisors decreased and the orientation of the first molars increased as the incisors were subjected to the gingival force with more labial arch wires. With the increase of the position of the rocking chair arch, the gingival force of the incisors continues to increase, the direction of the canine teeth increases, the second premolars are subjected to the directional forces, and the force direction of the first molars changes from the direction to the gingival direction. Conclusion: when the gingival force is applied to the canine teeth with the lip arch, the force of the lateral incisor decreases significantly, and the process of the incisor depression should be completed alone after the incisor depression is completed. The stress and direction of each tooth are different in different grooves of rocking chair, and the force changes of lateral incisor and molar are most obvious with the increase of alveolar position.
【作者單位】： 大連醫(yī)科大學(xué)附屬第一醫(yī)院;
【分類號(hào)】：R783.5
[Abstract]:Objective: to study the stress of teeth under the action of multiple labial arch and rocking chair arch. Methods: the finite element models of mandible, lower dentition, mandibular square wire arch bracket and arch wire were established. The stress of each tooth was analyzed by ANSYS under different application methods of labial arch and rocking chair arch. Results: the incisors were subjected to the gingival force and the molars were subjected to the directional force after the multiple use of the labial arch into the alveolus, and the gingival force of the incisors decreased and the orientation of the first molars increased as the incisors were subjected to the gingival force with more labial arch wires. With the increase of the position of the rocking chair arch, the gingival force of the incisors continues to increase, the direction of the canine teeth increases, the second premolars are subjected to the directional forces, and the force direction of the first molars changes from the direction to the gingival direction. Conclusion: when the gingival force is applied to the canine teeth with the lip arch, the force of the lateral incisor decreases significantly, and the process of the incisor depression should be completed alone after the incisor depression is completed. The stress and direction of each tooth are different in different grooves of rocking chair, and the force changes of lateral incisor and molar are most obvious with the increase of alveolar position.
【作者單位】： 大連醫(yī)科大學(xué)附屬第一醫(yī)院;
【分類號(hào)】：R783.5
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相關(guān)期刊論文 前5條
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