تقييم تأثير عزوم ادخال مرتفعة للزرعات على كثافة العظم الشعاعية حول الزرعات في المنطقة الخلفية للفك السفلي

الملخص EN

Bone density is a major predictor of implant stability.

Studies show a greater survival rate for implants in the mandible than in the maxilla, and this remains limited due to the bone density.

Which is more accurately determined based on computed tomography using Hounsfield units.

The primary stability is related to the insertion torque during the placement of the implants.

Several studies have shown that high insertion torque may causes micro-fractures with some absorption in the cortical region and consequently a delayed healing process.

Also, there are several in vitro studies that showed that the high insertion torque did not cause any bone necrosis around the implants.

Aim: evaluation the effect of high insertion torques of implants on bone density around implants in the posterior mandible.Materials and Methods: The sample consisted of 20 implants divided into two groups, the group A included 10 implants of high torque (>50 N/cm) and the group B included 10 implants of low torque (25-35 N/cm), implant type is (Megagen, anyone).

radiographic bone density was assessed in areas of symmetrical loss before and after implantation, and after 6 months.

Results: P- value (< 0.05) regardless of the time period studied, that is, at the 95% confidence level, there are statistically significant differences in the average values of radial bone density immediately after implantation and after 6 months between the two study groups.

The values of bone density immediately after implantation and after 6 months in the group of implants with high insertion torque were greater than the low torque group.

Conclusion: The high insertion torque of implants placed in the posterior mandible increases the amount of radial bone density around the implants compared with the low insertion torque immediately after implantation and after 6 months