PDF(Pubmed)
Abstract：
Introduction: Considering the positive effects of a low-level laser on new bone formation, we aimed to investigate the effects of a low-level laser in the treatment of patients with class II mandibular deficiency treated with Farmand functional appliance. Methods: Twenty-two growing patients aged 10-14 years were randomly divided into \"Farmand\" and \"Farmand+Laser\" groups. All patients were treated with Farmand functional appliance. Patients in the \"Farmand+laser\" group were exposed to laser irradiation (980 nm, 100 mw, 4 points around temporomandibular joints, 100 seconds each point) weekly for three months after 3-4 weeks of using the appliance. Lateral cephalometry radiographs were taken from all patients before and after the treatment period, and changes in skeletal and dental parameters were measured. Results: The association of the particular laser irradiation with the functional appliance led to a greater increase in the effective length of the mandible (Co-Gn, P=0.048), the anterior sagittal position of the mandible (SNB, P=0.029), and the length of the ramus (Co-Go, P=0.028), and it showed a further decrease in the discrepancy between the jaws (ANB, P=0.000) compared with the functional appliance alone. Conclusion: The application of the laser with the chosen parameters and protocol in conjunction with the functional appliance improved the effects of the functional appliance and reduced the discrepancy between the two jaws.
摘要：
简介：考虑到低水平激光对新骨形成的积极影响，我们的目的是研究低水平激光治疗Farmand功能性矫治器治疗的II类下颌骨缺乏症患者的效果。方法：将22例10-14岁的生长患者随机分为“农场”和“农场激光”组。所有患者均采用Farmand功能矫治器治疗。“Farmand+激光”组患者接受激光照射(980nm,100兆瓦，颞下颌关节周围4点，每点100秒）在使用该器具3-4周后，每周三个月。在治疗前后对所有患者进行侧位头颅X线片测量，测量骨骼和牙齿参数的变化。结果：特定激光照射与功能矫治器的关联导致下颌骨有效长度的更大增加（Co-Gn，P=0.048),下颌骨的前矢状位置（SNB，P=0.029),和ramus的长度(Co-Go，P=0.028),它显示了颌骨之间的差异进一步减少(ANB，P=0.000）与单独的功能器具相比。结论：将所选择的参数和协议与功能矫治器结合使用的激光改善了功能矫治器的效果，并减少了两个钳口之间的差异。
