EFFECT OF LOW LEVEL LEASER THERAPY ON THE CHRONIC DEFECT OF TIBIAL BONES IN RABBITS
2018
Humam H. Nazht | Sinan A.N. Al-khazrajii | Raffal A. Omar
This project was designed to evaluate the effect of low level leaser therapy(LLLT) on the induced chronic defect in the tibial bone of rabbits radiographically ,and physically,eight adults local breed rabbits of both sexes were employed toinduced 2.5 mm in diameter circular defect in the tibial bone surgically under generalanesthesia and highly aseptic technique ,the induced hole was implanted with 2.5 mmstainless steel screw ,that removed from the bone after one and half month postoperation , the experimental animals randomly divided into two equal groups fouranimas of each, the control group was lifted for normal healing process of the bonedefect without any treatment ,while the treatment group was exposed daily with singledosage of continuous diode laser for five minutes of 850 nm and 148.4 j/cm2 at 72hours interval for 14 days post operation (p.o.) ,the radiographic results in thetreatment group showed increase in the bone density around the induced defect withnew bone formation fill the cavity at the end of 2nd week p.o. then increase in thebone density and volume at the end of 4th week p.o. compare with the control groupthat the density and the new bone formation less than treatment group ,the physicalanalysis revealed increase in the bone density and hardiness with significant increasein fractures tolerance in the treatment group compare with the control group .Inconclusion that the LLLT successfully used for repairing the critical ( chronic) defectin tibial bones in rabbits .
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