本文選題：Lock-loose托槽 + 摩擦力�。� 參考：《吉林大學》2014年碩士論文

【摘要】：目的: 在干燥和人工唾液環(huán)境中測量Lock-loose托槽、六翼平底托槽結(jié)扎中間翼和結(jié)扎全翼時與弓絲之間動、靜摩擦力的大小，并與傳統(tǒng)四翼托槽和自鎖托槽進行對比。 方法: 選用Lock-loose托槽、六翼平底托槽、傳統(tǒng)四翼托槽和自鎖托槽，分別與0.016"、0.018"不銹鋼圓絲和0.018×0.025"、0.019×0.025"不銹鋼方絲組合，其中Lock-loose托槽與六翼平底托槽使用結(jié)扎中間翼和結(jié)扎全翼兩種結(jié)扎方式。使用電子萬能力學實驗機測量干燥和人工唾液兩種環(huán)境下弓絲在托槽內(nèi)滑動的動、靜摩擦力，并利用原子力顯微鏡觀察不銹鋼方絲摩擦前后的表觀形貌。 結(jié)果: Lock-loose托槽與六翼平底托槽結(jié)扎中間翼與四種弓絲組合的摩擦力均接近于零，與傳統(tǒng)四翼托槽有統(tǒng)計學差異（P0.05）；Lock-loose托槽全翼結(jié)扎時與四種弓絲組合的摩擦力均大于六翼平底托槽全翼結(jié)扎時與四種弓絲組合的摩擦力，且有統(tǒng)計學差異（P0.05）；與0.018×0.025"不銹鋼方絲組合時，Lock-loose托槽結(jié)扎全翼獲得最大摩擦力，與傳統(tǒng)四翼托槽和自鎖托槽有統(tǒng)計學差異（P0.05）；人工唾液環(huán)境中的摩擦力小于干燥環(huán)境中的摩擦力（P0.05）。 結(jié)論： 1. Lock-loose托槽通過改變結(jié)扎方式實現(xiàn)了臨床所需摩擦力大小的調(diào)節(jié)，，有效解決了低摩擦力與強支抗控制的矛盾。 2. Lock-loose托槽是在六翼平底托槽的平底槽溝的基礎上形成突脊結(jié)構(gòu)，并在摩擦力性能上成功的進行改良。 3.本實驗中人工唾液組摩擦力小于干燥組摩擦力，且有顯著性差異（P0.05），故人工唾液起到了潤滑作用。
[Abstract]:Objective: In dry and artificial saliva environment, the dynamic and static friction between the middle wing and the full wing of the six-wing flat-bottom bracket was measured in the dry and artificial saliva environment, and compared with the traditional four-wing bracket and the self-locking bracket. Methods: Lock-loose brackets, six-wing flat-bottomed brackets, traditional four-wing brackets and self-locking brackets were combined with 0.016 "0. 018" stainless steel round wire and 0.018 脳 0.025 "0. 019 脳 0.025" stainless steel square wire respectively. Among them, Lock-loose bracket and six wing flat-bottom bracket were ligated with middle wing and whole wing respectively. The dynamic and static friction forces of the arch wire sliding in the bracket under dry and artificial saliva conditions were measured by using an electronic universal mechanical tester. The apparent morphology of stainless steel square wire before and after friction was observed by atomic force microscope. Results: The friction between the Lock-loose bracket and the six-wing flat-bottom bracket ligating the middle wing and the four bow wires is close to zero. There was significant difference between the four-wing bracket and the traditional four-wing bracket. The friction force between the four kinds of bow wire combination and the whole wing ligation of the P0.05 lock-loose bracket was higher than that of the four kinds of bow wire combination when the six-wing flat-bottom bracket was ligated with the whole wing, and the friction force of the four kinds of bow wire combination was higher than that of the six wing flat-bottom bracket. The maximum friction force of Lock-loose bracket ligated with 0.018 脳 0.025 "stainless steel square wire was significantly different from that of traditional four-wing bracket and self-locking bracket. The friction force in artificial saliva was smaller than that in dry environment. Conclusion: 1. By changing the ligation mode, the Lock-loose bracket can adjust the size of the friction force needed in clinic, and effectively solve the contradiction between the low friction force and the control of strong Anchorage. 2. The Lock-loose bracket is formed on the basis of the flat-bottom groove of the six-wing flat-bottomed bracket, and the friction performance is improved successfully. 3. In this experiment, the friction force of artificial saliva group is lower than that of dry group, and there is a significant difference (P0.05A), so artificial saliva plays a lubricating role.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：R783.5

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