The effect of low-level laser on healing of jaw fracture : Experimental study / Mohamed Hosni Elshamy ; Supervised Khaled Atef Elhayes , Radwa Hamed Hegazy , Ahmed Abbas Zaky

Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral and Maxillofacial Surgery

Study was performed on twenty dogs, all of them were subjected to intentional fracture in their mandibles in both sides (right and left) and then were fixed using intra-osseous wiring , and they were divided into 2 groups. Group I (3weeks groups) has received low level laser therapy (LLLT) to their left sides for the area of fractures post-surgery for 9 sessions (3sessions per week day after day starting next day of surgery) while the right sides not subjected to laser and served as a control. Group II (6weeks group) has received low level laser therapy (LLLT) to their left sides for the area of fractures post-surgery for 15 sessions (3 sessions per week day after day for only 5 weeks starting next day of surgery and the last week no laser was applied) while the right sides not subjected to laser and served as a control. The left sides were subjected to diode laser of 980nm wavelength for 2 minutes (1 minute for each part of fracture line) touching the outer surface of skin towards the fracture line. All dogs were followed up clinically, radiographically and histologically after 3 weeks for group I and 6 weeks for group II, and data was statistically analyzed.The radiographic assessment was carried out in order to monitor the changes within the bone density along the line of fracture to both sides of the mandible. There was a significant increase in bone density in the laser sides (left sides) of both groups comparing with the control sides (right sides)

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