الفهرس 
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Abstract
This study was conducted to evaluate the effect Low Level Laser Therapy on implant stability using Resonance Frequency Analysis.
This study included ten patients (of both gender) for supported implant overdentures. They were selected from the Outpatient Clinic of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University.
This study was divided into two groups. group I (study group): 10 patients each received one implant inserted in the right mandibular canine area with LLLT application by a Semi-conductor diode LASER (type IV) applied to labial surface of the implant for 2 minutes every 2 days for 2 weeks. group II (control group):10 patients (same patients) each received one implant inserted in left mandibular canine area. All implants osseointegration were assessed by Magnetic Resonance Frequency Analysis to evaluate the implant stability. All patients had undergone surgical procedure of horizontal mid-crestal incision of the mucoperiosteal flap followed by implant placement.
Patients were evaluated clinically immediately postoperative and on the two weeks, 1st month and 3rd months after surgery for the following:
1. Presence of pain or any postoperative complications.
2. Implant mobility.
3. Measuring the implant stability quotient values with the resonance frequency analysis.
Also radiographic follow-up was performed using Periapical x-rays films after 3 months for the evaluation of cases showed no apical pathology or bone loss around the implants.
Research has shown the following results
It was recorded that during the study period all cases suffered the minimum level of pain and swelling, and did not register any kind of movement of the implants or gingival inflammation or infection.
During the study period Comparison of Mean implant stability in both directions upon fixation and at each post-operative periodic test for control group showed a significant decrease in stability during the first 4 weeks, and a minimal increase in stability at 3rd month. Study group showed a decrease in stability during the first two weeks, followed by a minimal decrease at 4th week, and showed a greater real increase at 3rd month. Mean difference in stability between study and control groups was statistically significant at the 3rd month (p ≤0.05).
Therefore the results of the present clinical study demonstrated superior implant stability when implants were irradiated with LLLT.