Mohamed Hosni El-Shamy, Khaled Atef El-Hayes, Nermeen Hassanien, Radwa Hamed Hegazy And Ahmed Abbas Zaky,

ABSTRACT


Aim: The Aim Of This Study Was To Assess The Effect Of Low Level Laser Therapy On Bone Healing Process Of Jaw Fractures In Respect To Rate Of Callus Formation For Minimizing The Time Of Fixation.

Materials and Methods: All Dogs Were Followed Up Clinically, Radiographically And Histologically After 3 Weeks For Group I And 6 Weeks For Group II, And Data Were 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).

Results: The Histological Assessment Showed Increase In Amount And Thickness Of Woven Bone And Showed Completely Mature Well Organized Compact Bone To The Laser Applied Sides In Comparison With The Non-laser Sides (control Sides). The Results Revealed That There Was A Statistically Significant Increase In Bone Density Of The Laser Sides (left) In Comparison With The Non-laser Sides (right).

Conclusions: Low Level Laser Therapy Was Proved To Have The Ability To Assist And Accelerate The Healing Process Of Jaw Fractures. LLLT Has A Bio-stimulatory Effect On Osteoblast-like Cells After Laser Irradiation And So Shorten The Duration Of Fixation Of Fractured Bone.