الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Primary Outcome
To assess the effect of the Low Level Laser Therapy (LLLT) on the rate of
en-masse retraction in adult females having bimaxillary dentoalveolar protrusion.
Secondary Outcomes
Assess the following during en-masse retraction in both intervention
groups:
1- To measure the amount of anchorage loss, tipping and rotation of
maxillary first permanent molars.
2- To evaluate the pain associated.
3- To assess the root resorption of anterior teeth.
4- To measure the change in both tip and torque of anterior teeth.
5- To evaluate the side effects of LLLT (burns, ulcers, swellings …etc.).