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BACKGROUND:The use of laser therapy in the biostimulation of bone repair has been growing steadily.AIM:This study aimed to evaluate the radio-densitometric effect of low-intensity laser therapy on the osseointegration of immediately loaded dental implants in patients under vitamin C, omega-3 and calcium therapy.PATIENTS AND METHODS:A single implant was placed in the mandibular first molar region of twenty patients which were equally divided into two groups. In the non-laser group, the healing phase was left to progress spontaneously without any intervention, while in the laser group it was augmented with low-level laser therapy of wavelength 904 nm in contact mode, continuous wave, 20 mW output power and exposure time 30 sec with a dose 4.7 J/cm2. Patients in both groups were given vitamin C, calcium and omega-3 starting one month preoperatively. Postoperative digital panoramas were taken immediately after surgery, 1.5 months and 6 months postoperatively. Changes in bone density along the bone-implant interface at the mesial, distal and apical sides were assessed using the Digora software.RESULTS:Independent student t-test was used to compare means of variables between the laser and the non-laser group while repeated measures ANOVA was used to compare bone densities at different times for the same group. Significant increased differences were observed at the mesial, distal and apical sides surrounding the implants of both groups per time. However, the rate of increase was significantly higher in the laser group. The mean difference at the mesial side after 6 months was 21.99 ± 5.48 in the laser group and 14.21 ± 4.95 in the non-laser group, while it read 21.74 ± 3.56 in the laser group and 10.78 ± 3.90 in non-laser group at the distal side and was 18.90 ± 5.91 in the laser group and 10.39 ± 3.49 in non-laser group at the apical side. Significance was recorded at P = 0.004, P = 0.0001, and 0.001 at the mesial, distal and apical sides respectively.CONCLUSION:The low-intensity laser irradiation significantly promoted bone healing and speeded up the osseointegration process emphasising the laser’s biostimulatory effect.

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Immediate implant loading protocol is popular to patients' over the delayed loading protocol. Due to its high risks association, documented results were essential. Study objective; assess the bone height and density change using direct digital radiography in immediately loaded implants connected by a bar, and compare the results with those of the delayed loaded implants. 10 completely edentulous patients participated in a randomized controlled trial. All patients were treated by; conventional maxillary complete denture; mandibular overdenture supported by a prefabricated bar connecting two implants placed in the canine region. Patients were randomly divided into; test group (Group A) with immediate loaded implants and control group (Group B) with implants submerged and loaded three months after insertion. Intraoral direct digital radiography used to measurement marginal bone height level and radiodensitometric analysis of bone at intervals time of loading at 3, 6, 9 and 12 months. The result statistically revealed: an insignificant difference (p ≤ 0.05) D.H. El Khatib et al. 22 in the mean marginal bone loss between both groups; a significant increase (p ≤ 0.05) in the bone density measurements adjacent to the immediately loaded implants from time of loading. In conclusion, immediate loading of two mandibular implants splinted passive bar is a predictable alternative treatment comparable to delayed loading.