低能量激光照射加速正畸牙齒移動和減輕正畸疼痛的臨床研究
發(fā)布時間:2019-05-12 09:50
【摘要】:目的:本研究使用低能量激光照射正畸移動的牙齒,探討不同能量密度的低能量激光照射對正畸患者疼痛程度和牙齒移動速度的影響,為確定適宜的照射能量密度提供臨床依據。方法:選擇使用AO自鎖托槽固定矯治的患者24名,年齡在18-29歲之間,均拔除上頜第一前磨牙,使用微種植釘支抗內收前牙。將24名患者上頜左右兩側隨機分為對照組(加力后模擬照射,n=16)、實驗組1(加力后照射20s,能量密度為15.92J/cm2,n=16)、實驗組2(加力后照射40s,能量密度為31.85J/cm2,n=16)。研究開始時間為排齊整平后開始拉上頜尖牙向遠中移動階段,弓絲為0.018×0.025英寸不銹鋼絲,以兩側上頜磨牙區(qū)微種植釘作為支抗,使用鎳鈦拉簧以150g的力量拉尖牙向遠中移動。實驗組在加力后第0、3、7、14天分別對上頜尖牙唇側和舌側牙頸部、牙根中部、牙根尖區(qū)6個位點的牙槽黏膜進行激光照射,對照組模擬照射(無電源,盲法)。每4周復診一次,重新加力,并檢測力值為150g。每次復診加力后使用低能量激光照射上頜尖牙。研究時間為4個月,于研究開始和結束時分別取患者上頜模型灌制硬石膏,測量尖牙牙尖到第一磨牙近中頰尖的距離,與第一次所得距離差值即尖牙向遠中移動的距離。所有患者根據國際通用的VAS疼痛評分量表,采用調查問卷的方式記錄首次尖牙加力后1-7天的疼痛反應,將正畸疼痛程度數據化。告知患者治療期間不服用止痛藥物。向患者及家長詳細說明問卷的內容和要求以征得患者的配合。結果:1.在牙齒移動實驗中,尖牙遠中移動距離均值實驗組1(4.432±0.571mm)㧐實驗組2(3.724±0.320mm)㧐對照組(3.532±0.516mm),實驗組1與對照組、實驗組2均數差異有統計學意義(P㩳0.05),實驗組2和對照組沒有統計學差異(P㧐0.05),表明低能量激光照射(照射20s,能量密度為15.92J/cm2)可以加速牙齒移動。高劑量的激光照射沒有加速牙齒移動。2.在牙齒疼痛實驗中,疼痛總均值對照組(2.11±0.09)㧐實驗組2(2.00±0.09)㧐實驗組1(1.45±0.09),實驗組1與對照組、實驗組2均數差異有統計學意義(P㩳0.05),實驗組2和對照組沒有統計學差異(P㧐0.05),表明低能量激光照射(照射20s,能量密度為15.92J/cm2)可以減輕正畸牙齒的疼痛。高劑量的激光照射沒有減輕正畸牙齒的疼痛。結論:低能量激光治療可以加速正畸牙齒移動并減輕受力牙的疼痛,但需要適宜的照射劑量。照射劑量過高時不能加速正畸牙齒移動,也不能減輕受力牙的疼痛。
[Abstract]:Objective: to investigate the effect of low energy laser irradiation on the degree of pain and the speed of tooth movement in orthodontic patients. It provides clinical basis for determining the appropriate radiation energy density. Methods: 24 patients with AO self-locking bracket fixation, aged between 18 years and 29 years old, were selected. The maxillary first premolars were removed and the adductive anterior teeth were treated with microimplantation nail Anchorage. Twenty-four patients with maxillary left and right sides were randomly divided into control group (simulated irradiation after stress, n 鈮,
本文編號:2475291
[Abstract]:Objective: to investigate the effect of low energy laser irradiation on the degree of pain and the speed of tooth movement in orthodontic patients. It provides clinical basis for determining the appropriate radiation energy density. Methods: 24 patients with AO self-locking bracket fixation, aged between 18 years and 29 years old, were selected. The maxillary first premolars were removed and the adductive anterior teeth were treated with microimplantation nail Anchorage. Twenty-four patients with maxillary left and right sides were randomly divided into control group (simulated irradiation after stress, n 鈮,
本文編號:2475291
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