الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Treatment of class II malocclusion with maxillary molar distalization is a common treatment modality that is indicated is some cases. Many appliances had been invented and developed for maxillary molar distalization and showed positive results. Some of these appliances need patient compliance and others not. Skeletal anchorage was introduced to overcome the problem of anterior anchorage loss that resulted from conventional appliances.
Accelerating the orthodontic results and shortening the treatment time including accelerating maxillary molar distalization is a demand for adult orthodontic patients. Surgical and non-surgical tooth movement acceleration techniques have been investigated by many researchers in order to overcome prolonged orthodontic treatment time. Low level laser therapy is a non-surgical and non-invasive tool for accelerating orthodontic tooth movement.
In this study the mini-implant assisted transpalatal arch appliance was used for bilateral distalization of maxillary first molars and low level laser therapy was tested for its effect on the rate of tooth movement during distalization.
20 patients with age ranging from 20 to 30 years from the out-patient clinic of the Orthodontic Department of the Faculty of Dentistry Ain-Shams University participated in this study and were randomly allocated in two groups; study group (low level laser therapy group) and Control group. All patients required maxillary molar distalization as part of their orthodontic treatment plan.
Banding of the first maxillary molars followed by impression for appliance fabrication was done then mini-screw implants were inserted with appliance cementation. Study group (low level laser therapy group) had their laser regimen at days 0, 3, 7, and every 14 days till correction of molar relation.
The rate of maxillary first molar movement was assessed through the analysis of successive digital model scans. The three-dimensional changes accompanying the maxillary first molar distalization in addition to skeletal, soft tissue, and maxillary molar root length changes were evaluated by analyzing pre and post-distalization CBCT and digital models.